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Li Y, Zhou T, Zhuang J, Dai Y, Zhang X, Bai S, Zhao B, Tang X, Wu X, Chen Y. Effects of feeding restriction on skeletal muscle development and functional analysis of TNNI1 in New Zealand white rabbits. Anim Biotechnol 2023; 34:4435-4447. [PMID: 36520026 DOI: 10.1080/10495398.2022.2155662] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
While restricting nutrition can improve diseases related to the digestive tract, excessive restriction of food intake can also lead to malnutrition and delayed physical growth. Therefore, this brings the demand to study the effect and potential mechanism of restricted feeding on skeletal muscle development in rabbits. This study utilized hematoxylin-eosin (HE) staining to detect muscle fiber area which depicted significant reduction in skeletal muscle fiber upon 30% feed restriction (p < 0.05). The control group and 30% feed restricted group showed 615 deferentially expressed genes (DEGs). Through the GO and KEGG functional enrichment analysis demonstrated 28 DEGs related to muscle development. KEGG analysis showed enrichment of pathways including PI3K/Akt signaling pathway, MAPK signaling pathway, and Hedgehog signaling pathway. Further, the full length of troponin I1, slow skeletal type (TNNI1) was cloned. We studied the expression of skeletal muscle differentiation-related genes such as MyoD, Myf5 gene and Desmin. Specifically, the TNNI1 gene overexpression and knockdown studies were conducted. The over-expression of TNNI1 significantly enhanced the expression of the skeletal muscle development-related genes. Contrastingly, the silencing of TNNI1 gene reduced the expression significantly. These findings showed that TNNI1 may be a regulator for regulating the expression of muscle development-related genes.
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Affiliation(s)
- Yunpeng Li
- College of Animal Science and Technology, Yangzhou University, Jiangsu, China
| | - Tong Zhou
- College of Animal Science and Technology, Yangzhou University, Jiangsu, China
| | - Junyi Zhuang
- College of Animal Science and Technology, Yangzhou University, Jiangsu, China
| | - Yingying Dai
- College of Animal Science and Technology, Yangzhou University, Jiangsu, China
| | - Xiyu Zhang
- College of Animal Science and Technology, Yangzhou University, Jiangsu, China
| | - Shaocheng Bai
- College of Animal Science and Technology, Yangzhou University, Jiangsu, China
| | - Bohao Zhao
- College of Animal Science and Technology, Yangzhou University, Jiangsu, China
| | - Xianwei Tang
- Jiangsu Pizhou Orient Breeding Co., Ltd, Jiangsu, China
| | - Xinsheng Wu
- College of Animal Science and Technology, Yangzhou University, Jiangsu, China
| | - Yang Chen
- College of Animal Science and Technology, Yangzhou University, Jiangsu, China
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Xi Y, Wang L, Qi J, Wei B, Han X, Lu Y, Hu S, He H, Han C, Zhu Y, Hu J, Liu H, Wang J, Li L. Comprehensive transcriptomic and metabolomic analysis of the effect of feed restriction on duck sternal development. Poult Sci 2023; 102:102961. [PMID: 37604023 PMCID: PMC10465956 DOI: 10.1016/j.psj.2023.102961] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 06/29/2023] [Accepted: 07/21/2023] [Indexed: 08/23/2023] Open
Abstract
Skeletal characteristics are important to the growth and development of poultry. In feeding management, constant free feeding (FF) of poultry may lead to imbalance between bone development and weight gain. Feed restriction (FR), to a certain extent, is one way to solve this problem. However, the effect of feed restriction on poultry bone development needs further elucidation at the molecular level. Therefore, in the present study, we investigated the effects of different levels of feed restriction (60% FR, 70% FR, 80% FR, and FF) on the sternum development of ducks at 7 and 8 wk old. In the seventh wk, with increasing feed restriction, the values of traits including body weight, breast muscle weight, sternal weight, keel length, and calcified keel length decreased. However, in the eighth wk, the sternum weight and keel length of ducks treated with 60% FR were unexpectedly higher than those of FF individuals, indicative of catch-up growth. Then, we conducted RNA-seq and metabolomic analysis on sterna from 7- and 8-wk-old FF and 60% FR ducks. The results identified multiple differentially expressed genes (DEGs) associated with sternum development that were influenced by feed restriction. Among them, we found that the mRNA expression levels of the chondroitin sulfate synthase 3 (CHSY3) and annexin A2 (ANXA2) which are involved in glycosaminoglycan biosynthesis and bone mineralization, had smaller changes over time under FR treatment than under FF treatment, implying that the FR treatment to a certain extent prevented the premature calcification and prolonged the development time of duck sternum. In addition, the metabolomic and integrative analyses revealed that several antiaging-related metabolites and genes were associated with sternal catch-up growth. Pyrimidine metabolism was identified as the most significant pathway in which most differential metabolites (DMs) between FF and 60% FR were enriched. The results from integrative analysis revealed that the content and expression of 4-aminobutyric acid (GABA) and its related genes showed relatively higher activity in the 60% FR group than in the FF group. The present study identifies multiple biomarkers associated with duck sternum development that are influenced by feed restriction and suggests the potential mechanism of feed restriction-associated duck sternal catch-up growth.
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Affiliation(s)
- Yang Xi
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Wenjiang District, Chengdu, Sichuan 611130, P.R. China; Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, Wenjiang District, Chengdu, Sichuan 611130, P.R. China
| | - Luyao Wang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Wenjiang District, Chengdu, Sichuan 611130, P.R. China; Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, Wenjiang District, Chengdu, Sichuan 611130, P.R. China
| | - Jingjing Qi
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Wenjiang District, Chengdu, Sichuan 611130, P.R. China; Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, Wenjiang District, Chengdu, Sichuan 611130, P.R. China
| | - Bin Wei
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Wenjiang District, Chengdu, Sichuan 611130, P.R. China; Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, Wenjiang District, Chengdu, Sichuan 611130, P.R. China
| | - Xu Han
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Wenjiang District, Chengdu, Sichuan 611130, P.R. China; Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, Wenjiang District, Chengdu, Sichuan 611130, P.R. China
| | - Yinjuan Lu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Wenjiang District, Chengdu, Sichuan 611130, P.R. China; Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, Wenjiang District, Chengdu, Sichuan 611130, P.R. China
| | - Shenqiang Hu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Wenjiang District, Chengdu, Sichuan 611130, P.R. China; Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, Wenjiang District, Chengdu, Sichuan 611130, P.R. China
| | - Hua He
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Wenjiang District, Chengdu, Sichuan 611130, P.R. China; Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, Wenjiang District, Chengdu, Sichuan 611130, P.R. China
| | - Chunchun Han
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Wenjiang District, Chengdu, Sichuan 611130, P.R. China; Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, Wenjiang District, Chengdu, Sichuan 611130, P.R. China
| | - Yuanchun Zhu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Wenjiang District, Chengdu, Sichuan 611130, P.R. China; Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, Wenjiang District, Chengdu, Sichuan 611130, P.R. China
| | - Jiwei Hu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Wenjiang District, Chengdu, Sichuan 611130, P.R. China; Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, Wenjiang District, Chengdu, Sichuan 611130, P.R. China
| | - Hehe Liu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Wenjiang District, Chengdu, Sichuan 611130, P.R. China; Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, Wenjiang District, Chengdu, Sichuan 611130, P.R. China
| | - Jiwen Wang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Wenjiang District, Chengdu, Sichuan 611130, P.R. China; Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, Wenjiang District, Chengdu, Sichuan 611130, P.R. China
| | - Liang Li
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Wenjiang District, Chengdu, Sichuan 611130, P.R. China; Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, Wenjiang District, Chengdu, Sichuan 611130, P.R. China.
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Szafraniec GM, Szeleszczuk P, Dolka B. Review on skeletal disorders caused by Staphylococcus spp. in poultry. Vet Q 2022; 42:21-40. [PMID: 35076352 PMCID: PMC8843168 DOI: 10.1080/01652176.2022.2033880] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 12/03/2021] [Accepted: 01/21/2022] [Indexed: 12/17/2022] Open
Abstract
Lameness or leg weakness is the main cause of poor poultry welfare and serious economic losses in meat-type poultry production worldwide. Disorders related to the legs are often associated with multifactorial aetiology which makes diagnosis and proper treatment difficult. Among the infectious agents, bacteria of genus Staphylococcus are one of the most common causes of bone infections in poultry and are some of the oldest bacterial infections described in poultry. Staphylococci readily infect bones and joints and are associated with bacterial chondronecrosis with osteomyelitis (BCO), spondylitis, arthritis, tendinitis, tenosynovitis, osteomyelitis, turkey osteomyelitis complex (TOC), bumblefoot, dyschondroplasia with osteomyelitis and amyloid arthropathy. Overall, 61 staphylococcal species have been described so far, and 56% of them (34/61) have been isolated from clinical cases in poultry. Although Staphylococcus aureus is the principal cause of poultry staphylococcosis, other Staphylococcus species, such as S. agnetis, S. cohnii, S. epidermidis, S. hyicus, S. simulans, have also been isolated from skeletal lesions. Antimicrobial treatment of staphylococcosis is usually ineffective due to the location and type of lesion, as well as the possible occurrence of multidrug-resistant strains. Increasing demand for antibiotic-free farming has contributed to the use of alternatives to antibiotics. Other prevention methods, such as better management strategies, early feed restriction or use of slow growing broilers should be implemented to avoid rapid growth rate, which is associated with locomotor problems. This review aims to summarise and address current knowledge on skeletal disorders associated with Staphylococcus spp. infection in poultry.
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Affiliation(s)
- Gustaw M. Szafraniec
- Department of Pathology and Veterinary Diagnostics, Institute of Veterinary Medicine, Warsaw University of Life Sciences – SGGW, Warsaw, Poland
| | - Piotr Szeleszczuk
- Department of Pathology and Veterinary Diagnostics, Institute of Veterinary Medicine, Warsaw University of Life Sciences – SGGW, Warsaw, Poland
| | - Beata Dolka
- Department of Pathology and Veterinary Diagnostics, Institute of Veterinary Medicine, Warsaw University of Life Sciences – SGGW, Warsaw, Poland
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Ogbuagu N, Ayo J, Aluwong T, Akor-Dewu M. L-serine modulates activities of antioxidant enzymes and behavioral responses in broiler chickens subjected to feed restriction during the hot-dry season. J Vet Behav 2022. [DOI: 10.1016/j.jveb.2022.11.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Chen S, Yan C, Xiao J, Liu W, Li Z, Liu H, Liu J, Zhang X, Ou M, Chen Z, Li W, Zhao X. Domestication and Feed Restriction Programming Organ Index, Dopamine, and Hippocampal Transcriptome Profile in Chickens. Front Vet Sci 2021; 8:701850. [PMID: 34604368 PMCID: PMC8481600 DOI: 10.3389/fvets.2021.701850] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 07/19/2021] [Indexed: 12/13/2022] Open
Abstract
The domestication process exerts different phenotypic plasticity between slow- and fast-growing breeds of chicken. Feed restriction has a critical role in production performance, physiological plasticity, and stress response. Our study aimed to explore how feed restriction programed the organ index, dopamine, and hippocampal transcriptome profile between slow- and fast-growing chickens, which were fed either ad libitum (SA and FA), or feed restricted to 70% of ad libitum (SR and FR), for 30 days. Results showed that feed restriction influenced the brain organ index (P < 0.05), but not the organ index of the heart, liver, and spleen. The slow-growing breed tested had a higher brain organ index than the fast-growing breed (P < 0.05). Under feed restriction conditions, both the slow- and fast-growing breeds had significantly elevated dopamine concentrations (P < 0.05) compared to those fed ad libitum. In the GO term, upregulated genes in the FA group were enriched in the mitochondria, respiratory chain, and energy metabolism compared to the SA group (P < 0.05). Membranes and ribosomes were enriched in the cellular component between the SR and FR groups (P < 0.05). In the KEGG functional pathways, upregulated DEGs in the FR group were enriched in the cardiovascular disease category and neurodegenerative disease category compared to the FA group (P < 0.05). Downregulated DEGs in the FA group were enriched in the oxidative phosphorylation and neurodegenerative disease categories (Parkinson's disease and Huntington's disease) compared with the SA group (P < 0.05). Upregulated DEGs in the FR group were enriched in the cardiovascular disease category, neurodegenerative disease category, and energy metabolism than the SR group (P < 0.05). In conclusion, feed restriction had profound effects on the brain organ index and plasma dopamine in the slow- and fast-growing chickens. Feed restriction may result in issues relating to cardiovascular and neurodegenerative diseases in the fast-growing breed tested, but not in the slow-growing breed.
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Affiliation(s)
- Siyu Chen
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, Key Laboratory of Animal Molecular Design and Precise Breeding of Guangdong Higher Education Institutes, School of Life Science and Engineering, Foshan University, Foshan, China.,Guizhou Nayong Professor Workstation, China Agricultural University, Bijie, China
| | - Chao Yan
- Guizhou Nayong Professor Workstation, China Agricultural University, Bijie, China.,College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Jinlong Xiao
- Guizhou Nayong Professor Workstation, China Agricultural University, Bijie, China.,College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Wen Liu
- College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Zhiwei Li
- College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Hao Liu
- College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Jian Liu
- Guizhou Nayong Professor Workstation, China Agricultural University, Bijie, China
| | - Xiben Zhang
- Guizhou Nayong Professor Workstation, China Agricultural University, Bijie, China
| | - Maojun Ou
- Guizhou Nayong Professor Workstation, China Agricultural University, Bijie, China
| | - Zelin Chen
- Guizhou Nayong Professor Workstation, China Agricultural University, Bijie, China
| | - Weibo Li
- Guizhou Nayong Professor Workstation, China Agricultural University, Bijie, China
| | - Xingbo Zhao
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, Key Laboratory of Animal Molecular Design and Precise Breeding of Guangdong Higher Education Institutes, School of Life Science and Engineering, Foshan University, Foshan, China.,Guizhou Nayong Professor Workstation, China Agricultural University, Bijie, China.,College of Animal Science and Technology, China Agricultural University, Beijing, China
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6
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Zukiwsky NM, Afrouziyeh M, Robinson FE, Zuidhof MJ. Broiler growth and efficiency in response to relaxed maternal feed restriction. Poult Sci 2021; 100:100993. [PMID: 33610891 PMCID: PMC7905470 DOI: 10.1016/j.psj.2021.01.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 12/12/2020] [Accepted: 01/05/2021] [Indexed: 11/06/2022] Open
Abstract
Broiler growth performance can be influenced by maternal BW, maternal age, and sex. The present study evaluated broiler growth and efficiency in response to increased maternal BW (relaxed level of maternal feed restriction). It was hypothesized that BW and fatness would increase, and efficiency would be reduced as maternal BW increased. Ten BW trajectories were applied to precision-fed Ross 708 female broiler breeders (n = 30) from 2 to 42 wk of age. Trajectories varied in prepubertal and pubertal growth phases from 2.5 to 22.5% above the recommended BW target. Additional unrestricted breeders (n = 6) were not limited to a maximum BW (fed ad libitum). Two 35 d experiments were conducted with precision-fed broilers from these breeders at 35 and 42 wk of age. Two analyses (full and restricted analysis scopes) were performed to evaluate broiler BW, feed conversion ratio (FCR) and carcass traits with maternal BW at photostimulation (22 wk of age) as a continuous effect, and maternal age and sex as discrete effects. The full scope included broilers from all hens (feed restricted and unrestricted). The restricted scope excluded broilers from unrestricted hens. Differences were reported at P ≤ 0.05. For every kilogram increase in maternal BW, cumulative FCR increased by 0.235 and 0.471 g:g for broilers from all and feed restricted hens, respectively. Proportional gut weight of broilers from feed restricted hens decreased by 0.8244% per kilogram increase in maternal BW. Males were heavier than females on day 28 and 35, and broilers from 42-wk-old breeders were heavier than broilers from 35-wk-old breeders on day 0 and 35. Males from all hens were more feed efficient (1.318 g:g) than females (1.335 g:g) from day 29 to 35. Females from all and feed restricted hens had a greater proportional fat pad and breast muscle weight than males, and proportional breast muscle yield of broilers from 42-wk-old breeders was on average 1.04 times greater than that of broilers from 35-wk-old breeders. Maternal BW did not affect offspring BW, reduced cumulative FCR, and reduced gut weight in the restricted analysis scope.
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Affiliation(s)
- N M Zukiwsky
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2P5, Canada
| | - M Afrouziyeh
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2P5, Canada
| | - F E Robinson
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2P5, Canada
| | - M J Zuidhof
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2P5, Canada.
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Yan C, Xiao J, Chen D, Turner SP, Li Z, Liu H, Liu W, Liu J, Chen S, Zhao X. Feed Restriction Induced Changes in Behavior, Corticosterone, and Microbial Programming in Slow- and Fast-Growing Chicken Breeds. Animals (Basel) 2021; 11:ani11010141. [PMID: 33440656 PMCID: PMC7827424 DOI: 10.3390/ani11010141] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 01/07/2021] [Accepted: 01/07/2021] [Indexed: 02/07/2023] Open
Abstract
Simple Summary Different genotypes of slow- and fast-growing chickens have phenotypic changes in appearance, behavior, and productivity in response to artificial selection. Feed restriction and gut microbiota play a vital role in controlling food intake, nutrition, and health. However, little is known about how feed restriction, as a benefit or chronic stress, influences behavior, stress response, and gut microbial programming in slow- and fast-growing chickens. This study aimed to explore slow- and fast-growing chickens who had feed restricted to 70% of ad libitum or were given ad libitum feed for 30 days to evaluate the effects on behavior, stress response, and gut microbiota. We found that feed restriction can influence behaviors in both slow- and fast-growing breeds. Feed restriction to 70% for 30 days can influence stress response and gut microbiota composition, but some changes are evident only in slow- or only in fast-growing chickens. The study provides a better understanding of how artificial selection has affected chicken biology and their response to stress challenge. Abstract This study aimed to explore the difference between two Chinese local broilers, one slow- and one fast-growing, in their response to a stress challenge. We conducted the study on slow- (Weining chicken) and fast-growing (Jinlinghua chicken) breeds, with 50 chickens from each breed either feed restricted to 70% for 30 days as a stress or given ad libitum to evaluate the effects on behavior, corticosterone, and microbial programming. Standing behavior was more frequent while exploration was less common in fast-growing breeds compared to slow-growing breeds. Food seeking and ingestion, exploration, and drinking increased, while resting decreased in the feed restricted treatments. There was no difference in corticosterone concentration between slow- and fast-growing chickens, but the level was affected by feeding treatments, and the interaction of breed and feed restriction. At the genus-level, the relative abundance of Bacteroides and Lactobacillus was higher, while Cloacibacillus and Megasphaera was lower in the slow-growing breed compared to the fast-growing breed. Feed restricted birds had a higher abundance of Mucispirillum, but lower abundance of Cloacibacillus, Clostridium XlVa and Clostridium IV. In conclusion, feed restriction to 70% for 30 days as a chronic stress stimulation caused more activity, elevated the stress response, and altered gut microbiota composition, but some changes were only evident in slow- or fast-growing chickens.
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Affiliation(s)
- Chao Yan
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (C.Y.); (J.X.); (D.C.); (Z.L.); (H.L.); (W.L.)
- Guizhou Nayong Professor Workstation, China Agricultural University, Bijie 553300, China;
| | - Jinlong Xiao
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (C.Y.); (J.X.); (D.C.); (Z.L.); (H.L.); (W.L.)
- Guizhou Nayong Professor Workstation, China Agricultural University, Bijie 553300, China;
| | - Di Chen
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (C.Y.); (J.X.); (D.C.); (Z.L.); (H.L.); (W.L.)
| | - Simon P. Turner
- Animal and Veterinary Sciences Department, Scotland’s Rural College, Edinburgh EH25 9RG, UK;
| | - Zhiwei Li
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (C.Y.); (J.X.); (D.C.); (Z.L.); (H.L.); (W.L.)
| | - Hao Liu
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (C.Y.); (J.X.); (D.C.); (Z.L.); (H.L.); (W.L.)
| | - Wen Liu
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (C.Y.); (J.X.); (D.C.); (Z.L.); (H.L.); (W.L.)
| | - Jian Liu
- Guizhou Nayong Professor Workstation, China Agricultural University, Bijie 553300, China;
| | - Siyu Chen
- Guizhou Nayong Professor Workstation, China Agricultural University, Bijie 553300, China;
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, Key Laboratory of Animal Molecular Design and Precise Breeding of Guangdong Higher Education Institutes, School of Life Science and Engineering, Foshan University, Foshan 528225, China
- Correspondence: (S.C.); (X.Z.); Tel.: +86-0757-85517214 (S.C.); +86-010-62733417 (X.Z.)
| | - Xingbo Zhao
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (C.Y.); (J.X.); (D.C.); (Z.L.); (H.L.); (W.L.)
- Guizhou Nayong Professor Workstation, China Agricultural University, Bijie 553300, China;
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, Key Laboratory of Animal Molecular Design and Precise Breeding of Guangdong Higher Education Institutes, School of Life Science and Engineering, Foshan University, Foshan 528225, China
- Correspondence: (S.C.); (X.Z.); Tel.: +86-0757-85517214 (S.C.); +86-010-62733417 (X.Z.)
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Hadaeghi M, Avilés-Ramírez C, Seidavi A, Asadpour L, Núñez-Sánchez N, Martínez-Marín AL. Improvement in broiler performance by feeding a nutrient-dense diet after a mild feed restriction. REV COLOMB CIENC PEC 2020. [DOI: 10.17533/udea.rccp.v34n3a02] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Background: The use of early nutrient-restriction programs in broilers can prevent complications such as increased body fat deposition and its consequences. However, feed restriction not always gives the expected results. Objective: To assess the effect of two levels of feed restriction followed by a re-alimentation period with five increasing nutrient levels on growth performance and immune response of broiler chickens. Methods: A total of 330 animals were used. The treatments were: 25 (T25) and 35% (T35) quantitative feed restriction during the starting period, and 0, 2.5, 5, 7.5, 10, and 15% increased energy and protein contents during the growing and finishing periods. Results: For all the T25 treatments, except for T25-0, feed intake (FI) and body weight gain (BWG) were higher, and feed conversion rate (FCR) was lower (p<0.05) compared to the control treatment. In that group, the response of FI and BWG to the increased nutrient density was mostly quadratic (p<0.001), whereas that of FCR was linear (p<0.001). The FI and BWG results were less homogeneous in the T35 treatments, but FCR was lower compared to the control treatment (p<0.05) in all of them. The FCR showed no differences (p>0.05) between treatments during the finishing period. Conclusion: Feeding a nutrient-dense diet after a period of mild feed restriction gives the best results, while increasing nutrient density after a more severe feed restriction does not improve productive results compared to a standard diet. Carcass traits and immune function were not affected by restriction level or nutrient density.
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Affiliation(s)
- A.K. Zubair
- Department of Animal and Poultry Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - S. Leeson
- Department of Animal and Poultry Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada
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Wang G, Kim WK, Cline MA, Gilbert ER. Factors affecting adipose tissue development in chickens: A review. Poult Sci 2018; 96:3687-3699. [PMID: 28938790 DOI: 10.3382/ps/pex184] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 06/13/2017] [Indexed: 12/12/2022] Open
Abstract
The intense genetic selection for rapid growth in broilers has resulted in an increase in voluntary feed intake and growth rate, accompanied by increased fat deposition in adipose tissue depots throughout the body. Adipose tissue expansion is a result of the formation of adipocytes (several processes collectively referred to as adipogenesis) and cellular accumulation of triacylglycerols inside lipid droplets. In mammals, different anatomical depots are metabolically distinct. The molecular and cellular mechanisms underlying adipose tissue development have been characterized in mammalian models, whereas information in avian species is scarce. The purpose of this review is to describe factors regulating adipogenesis in chickens, with an emphasis on dietary factors and the broiler. Results from many studies have demonstrated effects of dietary nutrient composition on adipose tissue development and lipid metabolism. Transcription factors, such as peroxisome proliferator-activated receptor γ, CCAAT/enhancer-binding proteins α and β, and sterol regulatory element binding proteins orchestrate a series of cellular events that lead to an increase in activity of fatty acid transport proteins and enzymes that are responsible for triacylglycerol synthesis. Understanding the mechanisms underlying adipose tissue development may provide a practical strategy to affect body composition of the commercial broiler while providing insights on diets that maximize conversion into muscle rather than fat and affect depot-dependent deposition of lipids. Because of the propensity to overeat and become obese, the broiler chicken also represents an attractive biomedical model for eating disorders and obesity in humans.
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Affiliation(s)
- Guoqing Wang
- Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, Virginia 24061
| | - Woo Kyun Kim
- Department of Poultry Science, University of Georgia, Athens, GA 30602
| | - Mark A Cline
- Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, Virginia 24061
| | - Elizabeth R Gilbert
- Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, Virginia 24061
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Baxter MFA, Latorre JD, Koltes DA, Dridi S, Greene ES, Bickler SW, Kim JH, Merino-Guzman R, Hernandez-Velasco X, Anthony NB, Bottje WG, Hargis BM, Tellez G. Assessment of a Nutritional Rehabilitation Model in Two Modern Broilers and Their Jungle Fowl Ancestor: A Model for Better Understanding Childhood Undernutrition. Front Nutr 2018; 5:18. [PMID: 29629373 PMCID: PMC5876931 DOI: 10.3389/fnut.2018.00018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 03/08/2018] [Indexed: 01/28/2023] Open
Abstract
This article is the first in a series of manuscripts to evaluate nutritional rehabilitation in chickens as a model to study interventions in children malnutrition (Part 1: Performance, Bone Mineralization, and Intestinal Morphometric Analysis). Inclusion of rye in poultry diets induces a nutritional deficit that leads to increased bacterial translocation, intestinal viscosity, and decreased bone mineralization. However, it is unclear the effect of diet on developmental stage or genetic strain. Therefore, the objective was to determine the effects of a rye diet during either the early or late phase of development on performance, bone mineralization, and intestinal morphology across three diverse genetic backgrounds. Modern 2015 (Cobb 500) broiler chicken, 1995 Cobb broiler chicken, and the Giant Jungle Fowl were randomly allocated into four different dietary treatments. Dietary treatments were (1) a control corn-based diet throughout the trial (corn-corn); (2) an early phase malnutrition diet where chicks received a rye-based diet for 10 days, and then switched to the control diet (rye-corn); (3) a malnutrition rye-diet that was fed throughout the trial (rye-rye); and (4) a late phase malnutrition diet where chicks received the control diet for 10 days, and then switched to the rye diet for the last phase (corn-rye). At 10 days of age, chicks were weighed and diets were switched in groups 2 and 4. At day 20 of age, all chickens were weighed and euthanized to collect bone and intestinal samples. Body weight, weight gain, and bone mineralization were different across diet, genetic line, age and all two- and three-way interactions (P < 0.05). Overall, Jungle Fowl were the most tolerant to a rye-based diet, and both the modern and 1995 broilers were significantly affected by the high rye-based diet. However, the 1995 broilers consuming the rye-based diet appeared to experience more permanent effects when compared with the modern broiler. The results of this study suggest that chickens have a great potential as a nutritional rehabilitation model in human trials. The 1995 broilers line was an intermediate genetic line between the fast growing modern line and the non-selected Jungle Fowl line, suggesting that it would be the most appropriate model to study for future studies.
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Affiliation(s)
- Mikayla F. A. Baxter
- Department of Poultry Science, University of Arkansas, Fayetteville, AR, United States
| | - Juan D. Latorre
- Department of Poultry Science, University of Arkansas, Fayetteville, AR, United States
| | - Dawn A. Koltes
- Department of Poultry Science, University of Arkansas, Fayetteville, AR, United States
- Department of Animal Science, Iowa State University, Ames, IA, United States
| | - Sami Dridi
- Department of Poultry Science, University of Arkansas, Fayetteville, AR, United States
| | - Elizabeth S. Greene
- Department of Poultry Science, University of Arkansas, Fayetteville, AR, United States
| | - Stephen W. Bickler
- Department of Pediatrics, University of California, San Diego, San Diego, CA, United States
| | - Jae H. Kim
- Division Neonatology, University of California, San Diego, San Diego, CA, United States
| | - Ruben Merino-Guzman
- College of Veterinary Medicine, National Autonomous University of Mexico, Ciudad de Mexico, Mexico
| | | | - Nicholas B. Anthony
- Department of Poultry Science, University of Arkansas, Fayetteville, AR, United States
| | - Walter G. Bottje
- Department of Poultry Science, University of Arkansas, Fayetteville, AR, United States
| | - Billy M. Hargis
- Department of Poultry Science, University of Arkansas, Fayetteville, AR, United States
| | - Guillermo Tellez
- Department of Poultry Science, University of Arkansas, Fayetteville, AR, United States
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Jariyahatthakij P, Chomtee B, Poeikhampha T, Loongyai W, Bunchasak C. Methionine supplementation of low-protein diet and subsequent feeding of low-energy diet on the performance and blood chemical profile of broiler chickens. ANIMAL PRODUCTION SCIENCE 2018. [DOI: 10.1071/an16258] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The effects were investigated of supplementing methionine (Met) in a low-crude protein diet (Low-CP+Met) during Days 11–24 post-hatch and subsequent feeding with a low-metabolisable energy diet (Low-ME; –0.31 MJ/kg) during Days 25–42 on the productive performance and blood chemistry profile of broiler chickens. The 1600 broiler chicks were divided into four groups and fed as follows: (1) Control diet; (2) Low-CP (Met deficiency) diet during Days 11–24, then re-feeding with conventional diet; (3) Low-CP+Met diet during days 11–24, then re-feeding with conventional diet; and (4) Low-CP+Met+Low-ME diet (Low-CP+Met diet during Days 11–24, then re-feeding with Low-ME diet). During Days 11–24, the growth performance of the Control group was better than the other groups (P < 0.01), although the Low-CP+Met diet improved bodyweight, feed conversion ratio and improved the protein conversion ratio compare to the Low-CP group (P < 0.01). During the re-feeding phase (Days 25–42), reducing the dietary energy resulted in better growth performance and a better protein conversion ratio and energy conversion ratio than in the Control group (P < 0.05). Triglyceride, very low-density lipoprotein, low-density lipoprotein-cholesterol and total cholesterol in serum were higher, and non-esterified fatty acid was lower in the Control group than those of the Low-CP+Met+Low-ME group (P < 0.05). In conclusion, reducing dietary protein with balanced amino acids during the grower period and subsequent feeding with a low-energy diet promoted productive performance, improved protein utilisation and reduced fat accumulation via increasing lipolysis and/or disruption of the triglyceride transportation in broiler chickens.
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Shafiei A, Khavarinezhad S, Javandel F, Nosrati M, Seidavi A, Diarra SS. Effects of duration of early feed withdrawal and re-feeding on growth, carcass traits, plasma constituents and intestinal microflora of broiler chickens. JOURNAL OF APPLIED ANIMAL RESEARCH 2018. [DOI: 10.1080/09712119.2018.1509004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Azam Shafiei
- Department of Animal Science, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Sina Khavarinezhad
- Department of Animal Science, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Faramin Javandel
- Department of Animal Science, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Mehran Nosrati
- Department of Animal Science, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Alireza Seidavi
- Department of Animal Science, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Siaka Seriba Diarra
- School of Agriculture and Food Technology, The University of the South Pacific, Alafua Campus Samoa, Suva, Fiji
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Rezaei M, Hajati H. Effect of diet dilution at early age on performance, carcass characteristics and blood parameters of broiler chicks. ITALIAN JOURNAL OF ANIMAL SCIENCE 2017. [DOI: 10.4081/ijas.2010.e19] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Mansour Rezaei
- Department of Animal Science, Sari Agricultural Sciences and Natural Resources University, Iran
| | - Hosna Hajati
- Department of Animal Science, Sari Agricultural Sciences and Natural Resources University, Iran
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van der Klein S, Silva F, Kwakkel R, Zuidhof M. The effect of quantitative feed restriction on allometric growth in broilers. Poult Sci 2017; 96:118-126. [DOI: 10.3382/ps/pew187] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 01/20/2016] [Accepted: 04/18/2016] [Indexed: 11/20/2022] Open
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Afsharmanesh M, Lotfi M, Mehdipour Z. Effects of wet feeding and early feed restriction on blood parameters and growth performance of broiler chickens. ACTA ACUST UNITED AC 2016; 2:168-172. [PMID: 29767053 PMCID: PMC5940997 DOI: 10.1016/j.aninu.2016.04.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 04/07/2016] [Accepted: 04/07/2016] [Indexed: 11/16/2022]
Abstract
The aim of the study was to investigate the effects of early feed restriction (FR) with wet feeding on size of small intestine, blood lipids and performance parameters in broilers from d 1 to 42. A total of 160 one-day-old male broiler chickens were randomly allocated to 4 treatments with 4 pens per treatment and 10 chickens per pen, in a fully randomized 2 × 2 factorial arrangement, two feeding arrangement; providing feed ad libitum (Full Fed) or FR by 50% between days 6 to 12, and feed in either wet or dry form (wet form, 1.2 g water per 1 g dry feed). Body weight and feed intake of broiler chickens were determined at d 0, 21, and 42, and feed conversion ratio (FCR) was calculated. At d 42, two birds per replicate were euthanised for determination of carcass weight, organ weight and length, and also for blood parameters, which included high density lipoprotein (HDL), low density lipoprotein (LDL), total cholesterol and triglycerides (TG). The broilers fed wet form irrespective of FR throughout had superior body weight gain and carcass weight compared with birds fed dry diets at d 22 and 42 (P < 0.05). The wet form with FR significantly showed lower FCR compared with the wet form and ad libitum at d 1 to 21 (P < 0.05). The broilers fed wet form had significantly increased HDL, LDL, and total cholesterol and decreased TG (P < 0.05). In conclusion, wet form can improve performance growth and blood parameters, and the FR birds were able to attain normal market body weight at d 42, which suggests that growth compensation occurred.
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Affiliation(s)
- Mohsen Afsharmanesh
- Animal Science Department, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman 76169133, Iran
| | - Movahedeh Lotfi
- Animal Science Department, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman 76169133, Iran
| | - Zohreh Mehdipour
- Animal Science Department, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman 76169133, Iran
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Yang H, Wang Z, Shi S, Lu J, Li W. Effects of starter feeding time on body growth and viscera development of newly hatched chicks. ITALIAN JOURNAL OF ANIMAL SCIENCE 2016. [DOI: 10.4081/ijas.2009.585] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Rahimi S, Seidavi A, Sahraei M, Blanco FP, Schiavone A, Martínez Marín AL. Effects of Feed Restriction and Diet Nutrient Density During Re-Alimentation on Growth Performance, Carcass Traits, Organ Weight, Blood Parameters and the Immune Response of Broilers. ITALIAN JOURNAL OF ANIMAL SCIENCE 2016. [DOI: 10.4081/ijas.2015.4037] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Solmaz Rahimi
- Department of Animal Science, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Alireza Seidavi
- Department of Animal Science, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Mahmood Sahraei
- Ardabil Research Center of Agriculture and Natural Resources, Ardabil, Iran
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Kamely M, Karimi Torshizi MA, Rahimi S. Incidence of ascites syndrome and related hematological response in short-term feed-restricted broilers raised at low ambient temperature. Poult Sci 2015. [DOI: 10.3382/ps/pev197] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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21
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Wang X, Zhou Q, Shen J, Yao J, Yang X. Effect of difference doses of Newcastle disease vaccine immunization on growth performance, plasma variables and immune response of broilers. J Anim Sci Biotechnol 2015; 6:20. [PMID: 26045963 PMCID: PMC4455333 DOI: 10.1186/s40104-015-0019-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Accepted: 04/29/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND As a member of the Paramyxoviridae group, Newcastle disease virus (NDV) is the key causative agent of Newcastle disease (ND) that attacks chickens, turkeys and other avian birds. Surviving birds showed lower feed utilization, growth performance or egg production, which results in severe economic losses. The purpose of this study was to determine the effect of different doses of NDV immunization on growth performance, plasma variables and immune response of broiler chickens. METHODS A total of 480 one-day-old Arbor Acres broilers were randomly administrated with 0, 4, 6 or 8 doses of NDV at 12 d and 28 d, respectively. Each group consisted of ten replicates with 12 birds each. Growth performance and organ weight were recorded. Plasma concentration of glucose, total protein, cholesterol, triglycerides and nonesterified fatty acid was determined using commercial kits. The concentration of plasma corticosterone and insulin was measured using commercially available radio immune assay kits. Serum antibody titer and peripheral blood lymphocyte proliferation were also recorded. RESULTS The results showed that NDV decreased body weight gain (BWG), and increased Feed:Gain ratio at 1-21 d at all doses (P < 0.05). Plasma insulin concentration was lower in all immunization groups after the first immunization at 12 d (P < 0.01). The rest of the plasma indexes were not affected by NDV immunization, including glucose, total protein, cholesterol, triglycerides, nonesterified fatty acid, heterophil/lymphocyte ratio, as well as the proliferation of peripheral blood lymphocyte (P > 0.05). Compared with the control group, NDV treatment elevated NDV antibody titer at 10 d after the first inoculation (P < 0.05), and at d 5, 9 and 13 after the second inoculation (P < 0.05). Repeated NDV inoculation had no deleterious impacts on body composition at 42 d, and nutrient accretion rates at 8-42 d (P > 0.05). CONCLUSIONS In conclusion, NDV challenge decreased BWG and feed efficiency in earlier stage of growth. However, NDV treatment at 6 doses down-regulated the Feed:Gain ratio by 6.36 % throughout the whole growing period. These data suggest that appropriate lower doses of NDV inoculation increase feed efficiency of broiler chickens.
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Affiliation(s)
- Xiaofei Wang
- />College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi China
- />College of Science, Nanjing Agricultural University, Nanjing, Jiangsu 210095 China
| | - Qinqin Zhou
- />College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi China
| | - Jing Shen
- />College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi China
| | - Junhu Yao
- />College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi China
| | - Xiaojun Yang
- />College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi China
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Jahanpour H, Seidavi A, Qotbi AAA, Van Den Hoven R, Rocha e Silva S, Laudadio V, Tufarelli V. Effects of the level and duration of feeding restriction on carcass components of broilers. Arch Anim Breed 2015. [DOI: 10.5194/aab-58-99-2015] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Abstract. The effects of the restriction of the advised daily feed intake (ADFI) during 1 or 2 weeks on broiler body weight (BW) and carcass composition were studied. A total of 150 1-day-old male broilers (Ross-308) were randomly allotted to a control and four experimental treatments with three replicates per treatment. Broilers were subjected to a feeding restriction equal to 75 and 50 % of ADFI, either for a 7- or a 14-day period, between the 7th and 14th and 7th and 21th day of age, respectively. The BW and carcass composition were determined on day 42. From the findings, neither of the two levels of restriction nor the two time intervals had significant effects (P > 0.05) on the BW or breast and leg weight and proportion, liver and most of the body components. However, the feeding treatments show a tendency (P = 0.078) to influence the BW, with birds fed 75 % of ADFI for 14 day being heavier than the control group. For eviscerated carcass weight, an effect (P = 0.002) was observed, with birds fed 75 % of ADFI for 14 day having heavier carcasses (P < 0.05) than those in control group. The abdominal fat, both with regard to weight and proportion, was slightly influenced by dietary treatments (P > 0.05). From our results, it can be concluded that the applied feeding restrictions have a neutral or slightly beneficial effect on broiler growth traits and carcass composition.
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Effect of Supplementing Synthetic Amino Acids in Low-protein Diet and Subsequent Re-feeding on Growth Performance, Serum Lipid Profile and Chemical Body Composition of Broiler Chickens. J Poult Sci 2015. [DOI: 10.2141/jpsa.0140102] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Bortoluzzi C, Fernandes JIM, Contini JP, Gurski TJ, Esser AFG, Prokoski K. Quantitative feed restriction from 35 to 42 days of age for broiler chickens. REVISTA BRASILEIRA DE SAÚDE E PRODUÇÃO ANIMAL 2013. [DOI: 10.1590/s1519-99402013000400011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The objective of this study was to evaluate the effect of increasing levels of feed restriction in broilers aged from 35 to 42 days, on the performance, carcass parameters and intensity of lesions at slaughter. A total of 1,225 one-day old chicks were obtained from a commercial hatchery and were grown over a 34-days period (five weeks). At 34 days of age all birds were weighed and redistributed into a completely randomized design to perform the following treatments: control (0% feed restriction), 10, 20, 30 or 40% feed restriction. The amount of feed given to animals was adjusted daily according to the previous day's intake of the control treatment. At 42 days, birds were weighed and two birds per pen were slaughtered, one to evaluate carcass yield and cuts and the other for body composition analysis. Weight gain and feed intake were decreased linearly (p<0.05) according to increasing levels of restriction, while the feed:gain ratio showed a quadratic effect (p<0.05). The hot eviscerated carcass weight decreased linearly (p<0.05) according to increasing levels of restriction, without effects on the carcass, breast and thigh yield. The dry matter and fat of the carcass decreased and the crude protein increased (p<0.05), according to levels of restriction. We conclude that feed restriction of 2.5% in the last week of life can improve the feed efficiency of poultry, when there is a higher accumulation of fat in the carcass.
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Butzen F, Ribeiro A, Vieira M, Kessler A, Dadalt J, Della M. Early feed restriction in broilers. I–Performance, body fraction weights, and meat quality. J APPL POULTRY RES 2013. [DOI: 10.3382/japr.2012-00639] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Boostani A, Ashayerizadeh A, Mahmoodian FHR, Kamalzadeh A. Comparison of the effects of several feed restriction periods to control ascites on performance, carcass characteristics and hematological indices of broiler chickens. BRAZILIAN JOURNAL OF POULTRY SCIENCE 2010. [DOI: 10.1590/s1516-635x2010000300006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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The response of Ross 308 and Hybro broiler chickens to early and late skip-a-day feed restriction. Trop Anim Health Prod 2009; 41:1707-13. [PMID: 19452260 DOI: 10.1007/s11250-009-9369-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2008] [Accepted: 05/06/2009] [Indexed: 10/20/2022]
Abstract
The effects of skip-a-day feeding for 14 days during the starter or grower period or for 28 days during both periods followed by ad libitum feeding to market age on the growth performance of two strains of broiler chickens, Ross 308 and Hybro, were studied over 7 weeks. Ross was superior to Hybro in weight gain, final body weight and feed conversion but consumed more feed. Overall, feed restriction reduced feed intake, weight gain and body weight in all feed - restricted birds. Also, the 14-day feed-restricted birds gained more weight and were heavier than the 28-day restricted ones. Feed restriction neither improved feed conversion nor reduced abdominal fat but decreased mortality rate. Strain | treatment interaction significantly affected only feed intake. It is suggested that for broiler chicken production in the tropics Ross 308 could be used and feed restricted for 14 days during the starter or grower period.
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Ocak N, Sivri F. Liver colourations as well as performance and digestive tract characteristics of broilers may change as influenced by stage and schedule of feed restriction. J Anim Physiol Anim Nutr (Berl) 2008; 92:546-53. [DOI: 10.1111/j.1439-0396.2007.00746.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Haslam SM, Brown SN, Wilkins LJ, Kestin SC, Warriss PD, Nicol CJ. Preliminary study to examine the utility of using foot burn or hock burn to assess aspects of housing conditions for broiler chicken. Br Poult Sci 2007; 47:13-8. [PMID: 16546791 DOI: 10.1080/00071660500475046] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
1. Eleven broiler chicken farms, representing 4 production system types, were visited during the last 5 d of the flock cycle: bird and flock details were recorded. Litter friability was assessed at 9 sites within the house, atmospheric ammonia was measured at three sites and bird cleanliness was assessed on a numerical rating scale. 2. For these flocks, hock burn, foot burn and breast burn were measured at the processing plant by standardised assessors. 3. Significant correlations were identified between the percentage of birds with foot burn and average litter score, average house ammonia concentrations and feather score. 4. No correlation was found between the percentage of birds with hock burn or breast burn and average litter scores, average ammonia concentrations or feather score. 5. No correlation was found between stocking density and foot burn, hock burn or breast burn.6. If confirmed, these findings may have implications for the draft EU Broiler Directive, for which it is proposed that permitted stocking density on farm may be determined by the incidence and severity of contact dermatitis measured on plant.
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Affiliation(s)
- S M Haslam
- Division of Farm Animal Science, School of Veterinary Science, University of Bristol, Bristol, England.
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Özkan S, Plavnik I, Yahav S. Effects of Early Feed Restriction on Performance and Ascites Development in Broiler Chickens Subsequently Raised at Low Ambient Temperature. J APPL POULTRY RES 2006. [DOI: 10.1093/japr/15.1.9] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Pelicano E, Bernal F, Furlan R, Malheiros E, Macari M. Efeito da temperatura ambiente e da restrição alimentar protéica ou energética sobre o ganho de peso e crescimento ósseo de frangos de corte. ARQ BRAS MED VET ZOO 2005. [DOI: 10.1590/s0102-09352005000300013] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Avaliou-se o efeito da restrição alimentar qualitativa, protéica ou energética sobre o ganho de peso e desenvolvimento ósseo de frangos criados em diferentes temperaturas ambientes. O delineamento experimental foi inteiramente ao acaso, com os tratamentos em um esquema fatorial 3×3, com os fatores: restrição alimentar (R0 = ad libitum; R1 = restrição energética; R2 = restrição protéica) e temperatura ambiente (T1 = 18ºC; T2 = 25ºC; T3 = 33º C). Do 8º ao 14º dia, os frangos foram submetidos à restrição energética (2565kcal de EM/kg e 20% de proteína bruta) ou protéica (2850kcal de EM/kg e 15% de proteína bruta), sendo, posteriormente, alimentados à vontade. A restrição protéica resultou em menor ganho de peso e menor diâmetro do fêmur no 14º dia de idade. Não foram observadas diferenças nessas características a partir do 21° dia de idade. O ganho de peso e o crescimento do fêmur não foram influenciados pela restrição energética. A alta temperatura ambiente (33ºC) influenciou negativamente o ganho de peso e o diâmetro do fêmur, a partir do 21° dia, e o comprimento do fêmur, no 42º dia de idade. Tanto a restrição protéica, na segunda semana, quanto a alta temperatura ambiente, a partir do 21º dia de idade, reduziram o ganho de peso e o crescimento do fêmur de frangos.
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Affiliation(s)
| | | | | | | | - M. Macari
- Faculdade de Ciências Agrárias e Veterinárias
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Pinheiro DF, Cruz VC, Sartori JR, Vicentini Paulino MLM. Effect of early feed restriction and enzyme supplementation on digestive enzyme activities in broilers. Poult Sci 2004; 83:1544-50. [PMID: 15384906 DOI: 10.1093/ps/83.9.1544] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The effect of feed restriction and enzymatic supplementation on intestinal and pancreatic enzyme activities and weight gain was studied in broiler chickens. Quantitative feed restriction was applied to chickens from 7 to 14 d of age. An enzyme complex mainly consisting of protease and amylase was added to the chicken ration from hatching to the end of the experiment. Birds subjected to feed restriction whose diet was not supplemented showed an increase in sucrase, amylase, and lipase activities immediately after the restriction period. Amylase, lipase, and chymotrypsin activities were higher in chickens subjected to feed restriction and fed a supplemented diet than in those only subjected to feed restriction. Trypsin activity increased after feed restriction and after supplementation, but there was no interaction between these effects. Early feed restriction had no effect on enzyme activity in 42-d-old chickens. Chickens subjected to early restriction and fed the supplemented diet presented higher sucrase, maltase, and lipase activities than nonsupplemented ones (P < 0.05). There was no effect of early feed restriction or diet supplementation on weight gain to 42 d. Percentage weight gain from 14 to 42 d of age was equivalent in feed-restricted and ad libitum fed birds. Feed-restricted broilers fed a supplemented diet showed a higher percentage weight gain than nonsupplemented birds. We conclude that enzymatic supplementation potentiates the effect of feed restriction on digestive enzyme activity and on weight gain.
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Affiliation(s)
- D F Pinheiro
- Department of Physiology, Institute of Bioscience, Paulista State University-Botucatu, São Paulo, Brazil
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Camacho MA, Suárez ME, Herrera JG, Cuca JM, García-Bojalil CM. Effect of age of feed restriction and microelement supplementation to control ascites on production and carcass characteristics of broilers. Poult Sci 2004; 83:526-32. [PMID: 15109050 DOI: 10.1093/ps/83.4.526] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Three experiments were conducted, from January until September 2001, to estimate the optimized age to apply feed restriction to control mortality from ascites, with no negative effects on production and carcass characteristics of broilers. For each experiment, 1,200 1-d-old mixed Ross x Peterson chicks were reared in floor pens (50 chicks in each) and fed commercial feed. Feed restriction was applied for 8 h/d for 14 d at 21 or 28 d of age in experiment 1, 14 or 21 d in experiment 2, and 7 or 14 d in experiment 3. In experiments 2 and 3, a microelement supplement (without or with) was tested; the control groups received feed ad libitum and no supplement. Body weight gain, feed conversion, total mortality, and mortality from ascites, leg problems, and carcass characteristics were considered at the end of each experiment. The data were analyzed as a completely randomized design, or as a 2 x 2 factorial to estimate main and interaction effects (experiments 2 and 3). Additional analyses, including the control, were done; means comparisons were by orthogonal contrasts. The production and carcass characteristics of the restricted groups were lower than the control but were not statistically different in experiments 2 and 3, although the optimized age for feed restriction was at 7 d. Total mortality and mortality from ascites decreased by restriction, but leg problems increased without supplement. The results indicated that quantitative feed restriction and microelement supplementation at 7 d of age reduced mortality from ascites and leg problems and permitted compensatory growth sufficient to equal the production characteristics of the control group at 49 d of age. However, it is necessary to determine the specific microelements to be supplemented and to estimate the effects of season and genetic line.
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Affiliation(s)
- M A Camacho
- Colegio de Postgraduados, Programa de Ganadería, Montecillo, Texcoco, Mexico 56230
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Demir E, Sarica S, Sekeroglu A, Ozcan MA, Seker Y. Effects of early and late feed restriction or feed withdrawal on growth performance, ascites and blood constituents of broiler chickens. ACTA AGR SCAND A-AN 2004. [DOI: 10.1080/09064700410004852] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Balog JM, Kidd BD, Huff WE, Huff GR, Rath NC, Anthony NB. Effect of cold stress on broilers selected for resistance or susceptibility to ascites syndrome. Poult Sci 2003; 82:1383-7. [PMID: 12967249 DOI: 10.1093/ps/82.9.1383] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Genetic selection for an ascites-resistant line of broilers is seen as a permanent solution to the ascites problem. Ascites-resistant and ascites-susceptible lines have been developed using sire family selection based on mortality data taken from siblings reared in a hypobaric chamber (simulated 2,900 m above sea level). The relaxed line is representative of the original commercial pureline stock randomly mated with no artificial selection pressure. The objectives of this study were to evaluate the differences between the lines when reared in floor pens and subjected to an ascites-inducing cold stress. Seven hundred eighty three straight run broilers were reared in floor pens at local elevation (390 m above sea level). Feed and water were available ad libitum. Birds were brooded at 32 C during the first week. The second week birds were maintained at 30 degrees C. Cold stress was applied for the remaining 4 wk at 14 degrees C. Mortalities were necropsied daily to determine cause of death. Birds and feed were weighed weekly. At 6 wk, five birds per pen were bled, and half the survivors in each pen (8 to 15 birds) were killed, necropsied, and scored for ascites. Blood gases, clinical chemistries, and blood cell counts were taken. Liver, spleen, split heart, and lung weights were recorded. Body weights were not different among the resistant, susceptible, and relaxed lines (P < 0.05). Feed conversion was better in the resistant line when compared to the susceptible and relaxed lines (P < 0.05). Ascites incidence, as measured by mortality and lesion score at necropsy, was higher in the susceptible and relaxed lines when compared to the resistant line; 18.8, 12.7, and 1.6% respectively (P < 0.001). Susceptible and relaxed lines showed more right ventricular hypertrophy when compared with the resistant line (P < 0.05). The results show that under severe cold stress at local altitude (390 m above sea level), the ascites-resistant line was growing as rapidly as the other lines and was as resistant to ascites as it had been under hypobaric conditions.
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Affiliation(s)
- J M Balog
- USDA/ARS/PP&PSR, Fayetteville, Arkansas 72701, USA.
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37
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Gonzales E, Kondo N, Saldanha ESPB, Loddy MM, Careghi C, Decuypere E. Performance and physiological parameters of broiler chickens subjected to fasting on the neonatal period. Poult Sci 2003; 82:1250-6. [PMID: 12943295 DOI: 10.1093/ps/82.8.1250] [Citation(s) in RCA: 108] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Broiler chicks aged 12 h after hatching were allotted according to a block design in a 7 x 2 factorial schedule of 14 treatments and four replications of 50 chicks each one. The main experimental factors were fasting for 0, 6, 12, 18, 24, 30, and 36 h after chick placement and sex. Independent of sex, fasting had a negative linear effect on weight and productivity of broilers at market age (42 d) without affecting feed conversion or mortality index. Groups subjected to 18 and 36 h of fasting after placement, corresponding to 30 and 48 h posthatching fasting, had lower biometrical values for small intestine (length, weight, and size; villus height; and crypt depth) than chicks fed immediately after placement. According to the Pearson test, BW of birds at 21 and 42 d were significantly correlated to BW at 7 d (r=0.77) and 21 d (r=0.45), respectively. Males performed better than females but had higher mortality rates. Fasting did not influence serum concentrations of corticosterone or sexual steroid hormones. Nevertheless, early signs of sexual dimorphism arose from the high estradiol (E2) concentration on female serum. Heterophil:lymphocyte ratio was not different among treatments, indicating that early fasting did not seem to be a stress factor 21 or 42 d after fasting. The results suggested a maximum fasting of 24 h after hatching in order to preserve broiler productivity at market age.
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Affiliation(s)
- E Gonzales
- School of Veterinary Medicine and Animal Production, UNESP, São Paulo, Brazil.
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Wideman RF, Hooge DM, Cummings KR. Dietary sodium bicarbonate, cool temperatures, and feed withdrawal: impact on arterial and venous blood-gas values in broilers. Poult Sci 2003; 82:560-70. [PMID: 12710474 DOI: 10.1093/ps/82.4.560] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Sodium bicarbonate (NaHCO3) has been used successfully in mammals and birds to alleviate pulmonary hypertension. Experiment 1 was designed to provide measurements of arterial and venous blood-gas values from unanesthetized male broilers subjected to a cool temperature (16 degrees C) challenge and fed either a control diet or the same diet alkalinized by dilution with 1% NaHCO3. The incidences of pulmonary hypertension syndrome (PHS, ascites) for broilers fed the control or bicarbonate diets were 15.5 and 10.5%, respectively (P = 0.36, NS). Non-ascitic broilers fed the control diet were heavier than those fed the bicarbonate diet on d 49 (2,671 vs. 2,484 g, respectively); however, other comparisons failed to reveal diet-related differences in heart weight, pulse oximetry values, electrocardiogram amplitudes, or blood-gas values (P > 0.05). When the data were resorted into categories based on right:total ventricular weight ratios (RV:TV) indicative of normal (RV:TV < 0.28) or elevated (RV:TV > or = 0.28) pulmonary arterial pressures, broilers with elevated RV:TV ratios had poorly oxygenated arterial blood that was more acidic, had high partial pressure of CO2 (PCO2), and had higher HCO3 concentrations when compared with broilers with normal RV:TV ratios. Experiment 2 was conducted to determine if metabolic variations associated with differences in feed intake or environmental temperature potentially could mask an impact of diet composition on blood-gas values. Male broilers maintained at thermoneutral temperature (24 degrees C) either received feed ad libitum or had the feed withdrawn > or = 12 h prior to blood sampling. Broilers fed ad libitum had lower venous saturation of hemoglobin with O2, higher venous PCO2, and higher arterial HCO3 concentrations than broilers subjected to feed withdrawal. Broilers in experiment 2 fed ad libitum and exposed to cool temperatures (16 degrees C) had lower arterial partial pressure of O2 and higher venous PCO2 than broilers fed ad libitum and maintained at 24 degrees C. Overall, these results demonstrate that changes in diet composition (control vs. 1% NaHCO3 diets) had minimal impact on arterial and venous blood-gas variables when compared with the more dramatic differences associated with feed intake (ad libitum vs. > or = 12 h withdrawal), environmental temperature (24 vs. 16 degrees C), and the pathogenesis associated with PHS (RV:TV < 0.28 vs. > or = 0.28).
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Affiliation(s)
- R F Wideman
- Department of Poultry Science, University of Arkansas, Fayetteville, Arkansas 72701, USA.
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Bizeray D, Leterrier C, Constantin P, Picard M, Faure JM. Sequential feeding can increase activity and improve gait score in meat-type chickens. Poult Sci 2002; 81:1798-806. [PMID: 12512569 DOI: 10.1093/ps/81.12.1798] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
This study investigated the short- and long-term effects of sequential feeding by alternating low-and high-lysine diets during the day on growth, gait score (GS), and behavior in broilers. From Days 2 to 12, 6 pens of 10 birds were assigned to control treatment and fed a standard normal lysine diet (NL) (ME = 3,250 kcal/kg, CP = 23%, Lys = 1.19%) and six pens of 10 birds were assigned to the sequential treatment and fed a low-lysine diet (LL) (Lys = 0.85%) for half of the day and NL for the other half of the day. From Days 13 to 21, all groups were fed NL, and from Days 21 to 42, they were fed a grower diet. Sequential (S) chicks were lighter than Control chicks at Days 13 (304 +/- 6 vs. 378 +/- 7 g) and 42 (2,588 +/- 31 vs. 2,714 +/- 10 g) and had better leg condition at Day 42 (mean GS = 1.6 +/- 0.1 vs. 2.1 +/- 0.1, P < or = 0.05). During a day of S feeding, S birds ate less and wasted more LL than NL. Sequential birds spent less time standing and more time lying idle when fed LL than when fed NL. Sequential birds spent more time eating than Control birds, and they gradually increased the number of pecks in the litter during a sequential feeding day. The results suggest a major effect of food composition on behavior. Sequential feeding could be a means of decreasing leg problems in broilers.
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Affiliation(s)
- D Bizeray
- Station de Recherches Avicoles, INRA de Tours, 37380 Nouzilly, France
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40
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Urdaneta-Rincon M, Leeson S. Quantitative and qualitative feed restriction on growth characteristics of male broiler chickens. Poult Sci 2002; 81:679-88. [PMID: 12033418 DOI: 10.1093/ps/81.5.679] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Four experiments were conducted to evaluate the quantitative and qualitative feed restriction on the performance of male broiler chickens. In the first experiment, broilers fed identical pelleted diets were feed-restricted from 5 to 42 d by giving 95, 90, or 85% of the feed consumed ad libitum by control birds the previous day. In a second experiment, broilers were fed pellet or mash diets from 1 to 7 wk. In Experiments 3 and 4, broilers were feed-restricted to 90% of the ad libitum intake of a control group during different intervals. Results from Experiment 1 indicated that live body weight at 42 d was significantly different between unrestricted and restricted broilers (P < 0.01). A reduction in mortality was noted when feed intake was reduced (P < 0.05). In the second experiment, broilers fed mash had lower body weights and breast meat yields at 42 and 49 d (P < 0.05). Cumulative mortality at 42 and 49 d was reduced in broilers fed mash (P < 0.05). Results from Experiment 3 indicated that body weight and mortality were not significantly different (P > 0.05) at 42 d across treatments. There was a significant (P < 0.01) linear improvement on feed conversion at 42 d due to duration of feed restriction. Breast meat yield at 42 d was less in broilers subjected to mild feed restriction (P > 0.05) (Experiments 3 and 4). Broilers appeared able to recover from mild feed restriction, and there was always an associated reduction in mortality.
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Affiliation(s)
- M Urdaneta-Rincon
- Department of Animal & Poultry Science, University of Guelph, ON, Canada
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Ribeiro A, Penz A, Teeter R. Effects of 2-Hydroxy-4-(methylthio)butanoic Acid and dl-Methionine on Broiler Performance and Compensatory Growth After Exposure to Two Different Environmental Temperatures. J APPL POULTRY RES 2001. [DOI: 10.1093/japr/10.4.419] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Lee KH, Leeson S. Performance of broilers fed limited quantities of feed or nutrients during seven to fourteen days of age. Poult Sci 2001; 80:446-54. [PMID: 11297283 DOI: 10.1093/ps/80.4.446] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Three experiments were conducted with male broilers to study the effects of early life undernutrition. In all studies, treatments were represented by three or four replicate floor pens, each containing 30 to 40 birds. In Experiment 1, broilers were fed at 0.75 kcal ME/gBW0.67 for 4 d, 1.5 kcal ME/gBW0.67 for 5 d or 2.25 kcal ME/gBW0.67 for 6 d, all imposed beginning at 6 d of age. Birds were smaller following feed restriction (P < 0.01) although growth compensation occurred, and at 49 d all restricted birds were heavier (P < 0.01) than full-fed control birds. Improved growth was associated with improved feed conversion (P < 0.01), although carcass composition was unchanged. In a second study, birds were fed at 0.75 kcal ME/gBW0.67 for 3, 4, or 5 d, starting at either 4, 7, or 10 d of age. When feed restriction was applied early, or for shorter periods of time, growth compensation occurred (P > 0.05). With other more severe feed restriction, birds were smaller (P < 0.05) at 49 d compared to controls. Feed conversion was improved following prior feed restriction (P < 0.01, 0 to 49 d). In a third trial, broilers were fed a starter diet diluted with 50% oat hulls. Birds failed to consume enough of this diluted feed, and so were initially smaller. However 49-d weight was not affected (P > 0.05). When periods of 24-h feed withdrawal were imposed in conjunction with the diluted diets, birds were underweight at 49 d. It is concluded that physical feed restriction at 0.75 to 1.5 kcal ME/gBW0.67 imposed for 3 to 4 d in the second week of life currently presents the best option as a means of controlling broiler growth so as to improve feed efficiency.
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Affiliation(s)
- K H Lee
- Department of Animal and Poultry Science, University of Guelph, ON, Canada
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Reginatto MF, Ribeiro AML, Penz Jr AM, Kessler AM, Krabbe EL. Suplementação de Treonina em Dietas de Frangos de Corte, Variando a Energia e as Relações Energia: Proteína. BRAZILIAN JOURNAL OF POULTRY SCIENCE 2000. [DOI: 10.1590/s1516-635x2000000300006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Dois experimentos (EXP 1 e 2) foram conduzidos para avaliar relações energia metabolizável:proteína bruta (EM:PB) e a adição de treonina (Thr) em dietas com alta (A) (3.200kcal EM/kg) e baixa (B) (2.900kcal EM/kg) energia, sobre desempenho e composição de carcaças de frangos de corte machos. As relações energia:proteína foram 139 e 160 kcal/%, para as dietas iniciais (1 a 21 dias) (EXP 1) e 160 e 181kcal/%, para as de crescimento (22 a 40 dias) (EXP 2), nos dois níveis de energia. As dietas com ampla relação EM:PB foram suplementadas, ou não, com Thr a fim de iguala-las às dietas com menor EM:PB. Os níveis de Met+Cys e de Lys foram constantes. As aves receberam uma dieta única após (EXP1), ou antes (EXP2) do fornecimento das dietas experimentais. Nos dois EXP as dietas A proporcionaram melhor desempenho: ganho de peso (GP),consumo de ração e conversão alimentar (CA) (p<0,01), ao final de cada período experimental. Porém, no EXP 1, as aves que receberam dietas B tiveram melhor conversão calórica (CC, kcal/kg,) (p<0,01) no período total (1 a 40 dias), indicando um período de crescimento acelerado. Os níveis de Thr (0,74 e 0,69% para A e B respectivamente) das dietas com relação EM:PB ampla não foram limitantes no desempenho das aves. No EXP 2, a EM:PB 181 deprimiu o GP (p<0,08) e piorou a CA (p<0,01), nas energias A e B. Portanto, em dietas práticas iniciais, Thr não foi um aminoácido (AA) limitante. Porém, de 22 a 40 dias, a adição de Thr foi necessária, em dietas com EM:PB 181kcal/%(EXP 2). A suplementação de Thr não influenciou a composição das carcaças nos dois EXP.
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Balog JM, Huff GR, Rath NC, Huff WE. Effect of dietary aspirin on ascites in broilers raised in a hypobaric chamber. Poult Sci 2000; 79:1101-5. [PMID: 10947177 DOI: 10.1093/ps/79.8.1101] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
During the course of ascites development in broilers, many factors can interact to cause hypoxia. To counteract hypoxia, birds with ascites develop greatly increased hematocrit and red cell counts. Increasing hematocrits result in more viscous blood. Prostaglandins are involved in the regulation of constriction and dilation of pulmonary blood vessels and in the formation of blood clots. Dietary aspirin, a prostaglandin inhibitor, was used in an attempt to promote vasodilation and inhibit blood clotting in broilers, with the objective of determining the effect of aspirin on ascites progression. The experimental design consisted of two trials with a total of 1,360, 1-d-old male broiler chicks, which were placed at either local altitude (390 m above sea level) or in a hypobaric chamber that simulated an altitude of 2,900 m above sea level. At each elevation, five dietary treatments were employed: [control, 0.025% crystalline acetylsalicylic acid (aspirin), 0.05% aspirin, 0.10% aspirin, and 0.20% aspirin]. Bird and feed weights were recorded weekly. At the end of 5 wk, blood samples and organ weights were collected, and all birds were examined for signs of ascites. In both trials, birds raised at high altitudes were significantly lighter, had a higher incidence of ascites, and had differences in hematology, compared with birds raised at local elevation. Only in Trial 2, however, did dietary aspirin appear to have any effect on ascites incidence. At the 0.20% aspirin level, a reduction in ascites incidence approached significance compared with controls (34% vs. 56%, P < or = 0.06). Unfortunately, birds fed 0.20% aspirin also were significantly (P < or = 0.01) lighter than controls. Because slowing growth rate is known to reduce ascites, this decrease in BW may have been partially responsible for any beneficial effect on ascites development and progression obtained through feeding aspirin.
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Affiliation(s)
- J M Balog
- USDA, Agricultural Research Service, Poultry Production and Product Safety Research, Center of Excellence for Poultry Science, University of Arkansas, Fayetteville 72701, USA.
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Balog JM, Anthony NB, Cooper MA, Kidd BD, Huff GR, Huff WE, Rath NC. Ascites syndrome and related pathologies in feed restricted broilers raised in a hypobaric chamber. Poult Sci 2000; 79:318-23. [PMID: 10735196 DOI: 10.1093/ps/79.3.318] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
It has been demonstrated that the incidence of ascites can be significantly reduced through feed restriction. This method is thought to have an effect by slowing the growth rate of the birds. Interestingly, when birds are grown in a hypobaric chamber, ascites incidence increases while the overall growth rate of the birds is decreased. Unfortunately, the restriction programs practiced also have a detrimental effect on growth characteristics. An experiment was conducted to determine if the timing and duration of feed restriction can be used to reduce the incidence of ascites for broilers reared under high altitude and local elevation without having a negative impact on growth. A total of 600 commercial broiler males were used. Birds were divided, placing 360 birds in the hypobaric chamber at a simulated 2900 m (9,500 ft) above sea level, and 240 birds were placed at local elevation [390 m (1,300 ft) above sea level]. At each altitude there were four treatments: 1) fully fed controls; 2) feed available for 8 h/d for 6 wk (the duration of the study); 3) feed available for 8 h/d during the first 3 wk, then full feed for the remaining 3 wk; and 4) full feed for the first wk, then 3 wk of 8 h of feed availability, then 2 wk of full feed. Birds and feed were weighed weekly, and mortalities were necropsied to determine the cause of death. At the end of 6 wk, blood samples were taken, and the birds were weighed, necropsied, and scored for ascites, and organ weights were recorded. All feed restriction treatments significantly reduced ascites incidence, when compared with the fully fed controls. Treatment 2 birds were significantly lighter than any other group at both altitudes. The fully fed controls at local elevation were heavier than the fully fed controls at simulated high altitude, as seen in past experiments.
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Affiliation(s)
- J M Balog
- USDA, Agricultural Research Service, Poultry Production and Product Safety Research, Fayetteville, Arkansas 72701, USA.
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46
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McGovern RH, Feddes JJ, Robinson FE, Hanson JA. Growth performance, carcass characteristics, and the incidence of ascites in broilers in response to feed restriction and litter oiling. Poult Sci 1999; 78:522-8. [PMID: 10230904 DOI: 10.1093/ps/78.4.522] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The effect of feed restriction and the application of canola oil to broiler straw litter to contain respirable dust on growth performance, carcass traits, and the incidence of ascites was evaluated with 800 male broilers studied in two 6-wk periods. Two pens of birds were feed restricted. Two pens of birds received feed ad libitum for the 6-wk trial. One restricted and one ad libitum pen received biweekly addition of canola oil to the litter. At 6 wk of age, 30 birds from each pen were killed for determination of breast muscle, fat pad, and heart weights. All birds were scored for the incidence of ascites at processing. A cross sectional image of each heart was digitally recorded and, using image analysis, the right ventricular area (RVA), left ventricular area (LVA), and total heart area (HA) were determined. The right ventricular wall was removed and its weight was expressed as a percentage of total heart weight (PRVW). The 40-d BW was significantly greater in the ad libitum birds (2.07 kg) than in the feed-restricted birds (1.86 kg). The right ventricular weight (RVW) (1.69 and 1.92 g) and the RVA (0.35 and 0.40 cm2) were also significantly different between the two feeding treatments. The ascites score was significantly correlated to the RVW (r = 0.50) and RVA (r = 0.52). The RVA was also correlated to the RVW (r = 0.63). Oiling the litter did not result in differences in carcass characteristics. Litter oiling significantly reduced the RVA of the ad libitum birds (0.36 cm2) compared to the ad libitum birds that did not have oiled litter (0.44 cm2). Feed restriction reduced the incidence of ascites, but also reduced gain. Litter oiling in the feed-restricted groups reduced the RVA, but did not reduce mortality.
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Affiliation(s)
- R H McGovern
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Canada
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47
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Picard M, Siegel PB, Leterrier C, Geraert PA. Diluted Starter Diet, Growth Performance, and Digestive Tract Development in Fast- and Slow-Growing Broilers. J APPL POULTRY RES 1999. [DOI: 10.1093/japr/8.1.122] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Abstract
Over the last 40 yr, genetic selection for rapid growth and improved feed efficiency has been very effective in meat-type poultry. Combined with changes in the feed that have increased both the nutritional and physical density to encourage a high nutrient intake, growth rate has more than doubled. The effect of genetic selection for high muscle to bone ratio and high calorie intake of a ration that supplies all nutritional requirements causes significant mortality from cardiovascular disease. In the chicken, sudden death syndrome (flip-over) and pulmonary hypertension syndrome resulting in ascites are the most important. Ruptured aorta, spontaneous turkey cardiomyopathy (round heart), and cardiomyopathy causing sudden death produce high mortality in turkeys. Rapid growth induced by high nutrient intake alone can cause severe lameness, bone defects, and deformity, as these problems are seen in animals that have not been selected for rapid growth: dogs, horses, pigs, ratites and wild birds kept in zoologic gardens. In meat-type poultry, growth-related disease can be reduced or eliminated by reducing feed intake without affecting final body weight. Rapid growth alone may not be the pathogenic mechanism that results in cardiovascular or musculoskeletal defects. Metabolic imbalance induced by high nutrient intake may cause some of the conditions. These metabolic problems might be corrected without reducing growth rate.
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Affiliation(s)
- R J Julian
- Department of Pathology, Ontario Veterinary College, University of Guelph, Canada.
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Shlosberg A, Bellaiche M, Berman E, Ben David A, Deeb N, Cahaner A. Comparative effects of added sodium chloride, ammonium chloride, or potassium bicarbonate in the drinking water of broilers, and feed restriction, on the development of the ascites syndrome. Poult Sci 1998; 77:1287-96. [PMID: 9733114 DOI: 10.1093/ps/77.9.1287] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A hypothesis that the ionic composition of drinking water might affect development of the ascites syndrome in broilers was investigated in two trials. The first trial comprised four groups of 650 male chicks. A control treatment was normal tap water and the other three treatments comprised the addition to the tap water of 1,000 mg/L sodium as NaCl, 5,000 mg/L NH4Cl, or 5,000 mg/L KHCO3, supplied from age 2 to 47 d. At Day 28, equally sized subsets of these groups were moved to individual cages, where they received a severe exposure to ambient cold. The development of the ascites syndrome was monitored by measurements of hematocrit and arterial blood oxygen saturation (PaO2) by oximetry, body weight, and examination of dead birds for cause of death. Mortality from ascites in cold-exposed birds from Days 28 to 47 was 28, 48, 40, and 16% in the tap water, NaCl, NH4Cl, and KHCO3 groups, respectively; only the NaCl mortality was significantly different from the tap water mortality. The KHCO3 treatment increased PaO2 (compared with tap water treatment) at Day 28 by 5.5% and at Day 35 by 10.5%, but not at Day 42. The KHCO3 caused a reduction in body weight, which was 13% less than the tap water group at Day 42, probably due to a chronic toxicity. The second trial specifically examined the same parameters with lower water levels of KHCO3 (3,000 and 1,000 mg/L), in comparison to a 10% feed restriction protocol, in order to clarify whether the increased PaO2 was due to a specific effect of the KHCO3 or was a metabolic manifestation of a reduced growth rate. The 3,000 mg/L KHCO3 treatment had no effect on PaO2, but the 1,000 mg/L treatment augmented PaO2 by 5.3% at Day 35 (but not at Days 28 or 42), without reducing the final body weight. The feed restriction group showed an elevated PaO2 of 5.4% at Day 35 (but not at Days 28 or 42), with no reduction in the final body weight. The inclusion of 1,000 mg/L of KHCO3 into the drinking water of broilers or a temporary 10% feed restriction may be means to augment PaO2.
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Affiliation(s)
- A Shlosberg
- Kimron Veterinary Institute, Bet Dagan, Israel.
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Leeson S, Zubair AK. Nutrition of the broiler chicken around the period of compensatory growth. Poult Sci 1997; 76:992-9. [PMID: 9200235 DOI: 10.1093/ps/76.7.992] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Three experiments were conducted with cage-reared broilers to 21 d following nutrient restriction from 6 to 12 d age. In Experiment 1, birds were full-fed from 6 to 11 or given 50% of ad libitum intake on a daily basis, or 100% of ad libitum intake on a daily basis when the diet was diluted 50% with oat hulls. Birds were not able to fully recover body weight depression by 21 d, although birds previously restricted, by whatever method, were more efficient (P < 0.01) in overall energy intake:body weight gain. Prior feed restriction had no effect on ability to metabolize diet energy (P > 0.05), although these birds did exhibit increased nitrogen retention compared to birds full-fed from 6 to 11 d. In a second experiment, birds were fed diets with 1.25, 1.38, 1.51, 1.63, 1.76, or 1.88% lysine in the realimentation diet from 12 to 21 d. Lysine level had no effect on growth rate or feed efficiency (P > 0.05) for full-fed birds; however there was a linear (P < 0.05) decline in growth rate from 12 to 21 d in response to extra dietary lysine for the birds previously feed restricted from 6 to 12 d. In a third experiment, birds were fed diets varying in energy (3,000 to 3,300 kcal/kg) or protein (22 to 29% CP) from 12 to 21 d following ad libitum vs 50% feed restriction from 6 to 11 d age. Protein level of the diet had little effect on performance traits to 21 d, although there was an indication of improved growth in response to the higher energy concentration. Birds full-fed from 6 to 11 d showed increased liver size at 21 d when fed more protein, although the converse was true for the restricted birds (P < 0.05). The growth response to diet energy was associated with increased carcass fatness. In general, there does not seem to be any advantage to manipulating diet formulation during realimentation of birds previously nutrient-restricted.
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Affiliation(s)
- S Leeson
- Department of Animal and Poultry Science, University of Guelph, Ontario, Canada
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