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Haldar S, Dhara AK, Sihi Arora S, Verma Mukherjee A, Nayak A. Copper Super-Dosing Improves Performance of Heat-Stressed Broiler Chickens through Modulation of Expression of Proinflammatory Cytokine Genes. Vet Med Int 2023; 2023:3559234. [PMID: 37736129 PMCID: PMC10511294 DOI: 10.1155/2023/3559234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 08/07/2023] [Accepted: 08/29/2023] [Indexed: 09/23/2023] Open
Abstract
Continuous exposure to high ambient temperatures brings about a number of oxidative damages in chickens. Copper (Cu), an active component of a number of antioxidative defence components, should arrest these changes to take place although that may not be possible under the standard dosing regimen followed by the industry. To ascertain the optimum dose response that may be beneficial in sustaining the performance of chickens under heat stress (HS), broiler chickens (n = 400) were exposed to high ambient temperature (between 27.2°C and 35.3°C) during 1-35 d. Copper (Cu) as Cu proteinate (Cu-P) at concentrations of 37.5, 75, 112.5, and 150 mg/kg was supplemented to the diet. The negative control (NC) diet did not contain any supplemental Cu. Increasing dietary Cu improved (P < 0.001) body weight, feed intake, and conversion ratio. Serum concentrations of total cholesterol at 21 d (P = 0.009), HDL cholesterol at 35 d (P = 0.008), LDL cholesterol at 21 d (P = 0.015), and triacylglycerol at both 21 d (P = 0.033) and 35 d (P = 0.001) decreased as Cu in the diet increased. As Cu in the diet increased, hemoglobin increased (P = 0.003) at 21 d, and the heterophil to lymphocyte ratio decreased both at 21 d (P = 0.047) and 35 d (P = 0.001). Superoxide dismutase and glutathione peroxidase activities increased when dietary Cu increased to 150 mg/kg (P < 0.01). Liver Cu at 35 d increased linearly with the dose of Cu in the diet (P = 0.0001). Selected bacteria were enumerated in the digesta to ascertain if Cu super-dosing affected their population in any way in the absence of any enteric challenge. Escherichia coli and total Salmonella numbers decreased (P = 0.0001), and total Lactobacillus increased (P = 0.0001) proportionately with dietary Cu. Interleukin-6 and tumour necrosis factor-α gene expression increased linearly (P = 0.0001) as Cu in the diet increased though the response plateaued at 112.5 mg/kg. It was concluded from the present experiment that during conditions of impending HS, dietary supplementation of 112.5 to 150 mg Cu/kg diet as Cu-P may be a novel strategy to alleviate the negative effects of HS without involving any apparent risk of Cu toxicity.
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Affiliation(s)
- Sudipto Haldar
- Agrivet Research and Advisory Pvt Ltd., 714 Block A Lake Town, Kolkata 700089, India
| | - Amrita Kumar Dhara
- Agrivet Research and Advisory Pvt Ltd., 714 Block A Lake Town, Kolkata 700089, India
| | - Sayantani Sihi Arora
- Agrivet Research and Advisory Pvt Ltd., 714 Block A Lake Town, Kolkata 700089, India
| | | | - Arup Nayak
- Agrivet Research and Advisory Pvt Ltd., 714 Block A Lake Town, Kolkata 700089, India
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Pesti-Asbóth G, Szilágyi E, Bíróné Molnár P, Oláh J, Babinszky L, Czeglédi L, Cziáky Z, Paholcsek M, Stündl L, Remenyik J. Monitoring physiological processes of fast-growing broilers during the whole life cycle: Changes of redox-homeostasis effected to trassulfuration pathway predicting the development of non-alcoholic fatty liver disease. PLoS One 2023; 18:e0290310. [PMID: 37590293 PMCID: PMC10434899 DOI: 10.1371/journal.pone.0290310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 08/06/2023] [Indexed: 08/19/2023] Open
Abstract
In the broiler industry, the average daily gain and feed conversion ratio are extremely favorable, but the birds are beginning to approach the maximum of their genetic capacity. However, as a consequence of strong genetic selection, the occurrence of certain metabolic diseases, such as myopathies, ascites, sudden cardiac death and tibial dyschondroplasia, is increasing. These metabolic diseases can greatly affect the health status and welfare of birds, as well as the quality of meat. The main goal of this study was to investigate the changes in the main parameters of redox homeostasis during the rearing (1-42 days of age) of broilers with high genetic capacity, such as the concentrations of malondialdehyde, vitamin C, vitamin E, and reduced glutathione, the activities of glutathione peroxidase and glutathione reductase, and the inhibition rate of superoxide dismutase. Damage to the transsulfuration pathway during growth and the reason for changes in the level of homocysteine were investigated. Further, the parameters that can characterize the biochemical changes occurring in the birds were examined. Our study is the first characterize plasma albumin saturation. A method was developed to measure the levels of other small molecule thiol components of plasma. Changes in redox homeostasis induce increases in the concentrations of tumor necrosis factor alpha and inflammatory interleukins interleukin 2, interleukin 6 and interleukin 8 in broilers reared according to current large-scale husbandry technology and feeding protocols. A significant difference in all parameters tested was observed on the 21st day. The concentrations of cytokines and homocysteine increased, while the concentrations of glutathione and cysteine in the plasma decreased. Our findings suggest that observed changes in the abovementioned biochemical indices have a negative effect on poultry health.
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Affiliation(s)
- Georgina Pesti-Asbóth
- Faculty of Agricultural and Food Sciences and Environmental Management, Institute of Food Technology, University of Debrecen, Debrecen, Hungary
| | - Endre Szilágyi
- Faculty of Agricultural and Food Sciences and Environmental Management, Institute of Food Technology, University of Debrecen, Debrecen, Hungary
| | - Piroska Bíróné Molnár
- Faculty of Agricultural and Food Sciences and Environmental Management, Institute of Food Technology, University of Debrecen, Debrecen, Hungary
| | - János Oláh
- Farm and Regional Research Institute of Debrecen, University of Debrecen, Debrecen, Hungary
| | - László Babinszky
- Faculty of Agricultural and Food Sciences and Environmental Management, Department of Animal Nutrition Physiology, Institute of Animal Science, Biotechnology and Nature Conservation, University of Debrecen, Debrecen, Hungary
| | - Levente Czeglédi
- Faculty of Agricultural and Food Sciences and Environmental Management, Department of Animal Science, Institute of Animal Science, Biotechnology and Nature Conservation, University of Debrecen, Debrecen, Hungary
| | - Zoltán Cziáky
- Agricultural and Molecular Research and Service Group, University of Nyíregyháza; Nyíregyháza, Hungary
| | - Melinda Paholcsek
- Faculty of Agricultural and Food Sciences and Environmental Management, Institute of Food Technology, University of Debrecen, Debrecen, Hungary
| | - László Stündl
- Faculty of Agricultural and Food Sciences and Environmental Management, Institute of Food Technology, University of Debrecen, Debrecen, Hungary
| | - Judit Remenyik
- Faculty of Agricultural and Food Sciences and Environmental Management, Institute of Food Technology, University of Debrecen, Debrecen, Hungary
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Broiler responses to copper levels and sources: growth, tissue mineral content, antioxidant status and mRNA expression of genes involved in lipid and protein metabolism. BMC Vet Res 2022; 18:223. [PMID: 35698226 PMCID: PMC9195228 DOI: 10.1186/s12917-022-03286-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 05/10/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Five hundred 8-d old male broilers Cobb500 were randomly allotted into 10 treatments in factorial arrangement with 5 Cu levels (0, 4, 8, 12, and 16 mg/kg), and 2 sources (Cu proteinate, CuPro and Cu sulphate, CuSO4.5H2O) for a 10-d-experiment. RESULTS Feed conversion ratio (FCR) was better (P < 0.05) in CuPro fed chicks compared with CuSO4.5H2O group. Average daily feed intake (ADFI) decreased linearly (P < 0.05) as dietary Cu increased. A quadratic response (P < 0.05) to Cu levels was found for FCR, being optimized at 9.87 and 8.84 mg Cu/kg in CuPro and CuSO4.5H2O diets, respectively. Copper supplementation linearly increased liver Cu content (P < 0.05) and tended to linearly increase (P = 0.07) phosphorus (P) and copper in tibia. Manganese and zinc were higher (P < 0.05) in tibia of CuPro fed birds. Broilers fed CuPro exhibited lower liver iron (P < 0.05) content, lower activities of Cu, Zn superoxide dismutase (CuZnSOD) in breast muscle and liver, and glutathione peroxidase in liver. Glutathione peroxidase reduced linearly (P < 0.05) with CuPro levels and increased linearly (P < 0.05) with CuSO4.5H2O levels and were lower (P < 0.05) in all CuPro levels in breast muscle. Breast muscle malondialdehyde concentration tended to be higher (P = 0.08) in broilers fed CuSO4.5H2O. Copper levels linearly increased (P < 0.05) metallothionein (MT) and malate dehydrogenase (MDH) expression in liver, and six-transmembrane epithelial antigen of the prostate-1 (STEAP-1) in the intestine. Copper elicited a quadratic response (P < 0.050) in AKT-1 and mammalian target of rapamycin (mTOR) in breast muscle, CuZnSOD in liver and antioxidant 1 copper chaperone (ATOX 1) in intestine. Broilers fed CuPro exhibited higher mRNA expression of mTOR in muscle breast and lower CuZnSOD in liver and ATOX 1 in intestine. Interaction (P < 0.05) between levels and sources was found in mRNA expression for GSK-3β, MT, and CuZnSOD in breast muscle, FAS and LPL in liver and MT and CTR1 in intestine. CONCLUSIONS CuPro showed beneficial effects on feed conversion and bone mineralization. Organic and inorganic Cu requirements are 9.87 and 8.84 mg Cu/kg, respectively.
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Chen X, Ma XM, Yang CW, Jiang SZ, Huang LB, Li Y, Zhang F, Jiao N, Yang WR. Low Level of Dietary Organic Trace Elements Improve the Eggshell Strength, Trace Element Utilization, and Intestinal Function in Late-Phase Laying Hens. Front Vet Sci 2022; 9:903615. [PMID: 35711798 PMCID: PMC9197127 DOI: 10.3389/fvets.2022.903615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 04/22/2022] [Indexed: 11/13/2022] Open
Abstract
This study was conducted to evaluate the effects of organic trace elements (Cu, Fe, Zn, and Mn) on performance, egg quality, trace elements utilization, and intestinal function in late-phase laying hens. A total of 1,080 laying hens (Hy-line brown, 65 weeks old) were randomly assigned to four treatments with six replications of 45 layers each. The basal diet was prepared without adding exogenous trace elements. The control group was fed with a basal diet supplemented with 600 mg/kg of inorganic trace elements. The three treatment groups were fed basal diets supplemented with 300, 450, and 600 mg/kg organic trace elements (OTE300, 450, and 600), respectively. The results showed that there was no significant difference in growth performance among all treatments. However, OTE450 significantly improved the eggshell strength of laying hens (p < 0.05), but had no significant effects on haugh unit, egg yolk weight, eggshell weight, and eggshell thickness, compared with other groups. Moreover, compared with the control group, OTE450 significantly increased the contents of copper, iron, and zinc in serum (p < 0.05). Meanwhile, all of the trace elements had a lower deposition in the feces in organic trace elements groups (p < 0.05). Histological analysis showed that the addition of organic trace elements could significantly improve the villus height and villus concealment ratio (p < 0.05). In addition, the messenger RNA (mRNA) and protein expressions of divalent metal transporter 1 (DMT1), zinc transporter 1 (ZnT-1), and ferroportin 1 (FPN1) were the highest in the OTE450 group. In conclusion, OTE450 could improve egg quality, intestinal function, and trace element utilization efficiency. Thus, this study provides a theoretical basis for the application of low levels of organic trace elements in laying hens.
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Affiliation(s)
- Xing Chen
- Department of Animal Sciences and Technology, Shandong Agricultural University, Tai'an, China
| | - Xiang-ming Ma
- Dongying Science and Technology Innovation Service Center, Dongying, China
| | - Chong-Wu Yang
- Guelph Research and Development Center, Agriculture and Agri-Food Canada (AAFC), Guelph, ON, Canada
| | - Shu-zhen Jiang
- Department of Animal Sciences and Technology, Shandong Agricultural University, Tai'an, China
| | - Li-bo Huang
- Department of Animal Sciences and Technology, Shandong Agricultural University, Tai'an, China
| | - Yang Li
- Department of Animal Sciences and Technology, Shandong Agricultural University, Tai'an, China
| | - Fan Zhang
- Department of Animal Sciences and Technology, Shandong Agricultural University, Tai'an, China
| | - Ning Jiao
- Department of Animal Sciences and Technology, Shandong Agricultural University, Tai'an, China
- *Correspondence: Ning Jiao
| | - Wei-ren Yang
- Department of Animal Sciences and Technology, Shandong Agricultural University, Tai'an, China
- Wei-ren Yang
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Effects of Supplementation with Dried Neem Leaf Extract on Lipid Peroxidation and Antioxidant Enzyme mRNA Expression in the Pectoralis Major Muscle of Broiler Chickens. J Poult Sci 2022; 59:75-80. [PMID: 35125915 PMCID: PMC8791773 DOI: 10.2141/jpsa.0200120] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 02/17/2021] [Indexed: 12/02/2022] Open
Abstract
This study was conducted to evaluate the effects of dietary supplementation of dried neem (Azadirachta indica) leaf extract (DNE) on lipid peroxidation and the expression of genes encoding mRNAs in antioxidant enzymes in the pectoralis major muscle of chickens. A total of 24 male broiler chickens (ROSS308) were divided into three groups (n=8) at 21 days of age. The control group of chickens was fed a basal diet, and the remaining two groups of chickens were fed a basal diet supplemented with DNE at a concentration of 0.5% or 2.0% until 35 days of age. Growth performance (body weight, weight gain, feed intake, and feed conversion ratio) and tissue weights did not differ among the three groups. The 2.0% DNE-supplemented diet decreased the muscle malondialdehyde content, a marker of lipid peroxidation, and drip loss compared to the control chickens. In addition, the expression of genes encoding mRNAs of antioxidant enzymes (i.e., Cu/Zn-superoxide dismutase, Mn-superoxide dismutase, glutathione peroxidase 7, and catalase) were higher in the pectoralis major muscle of chickens fed the 2.0% DNE-supplemented diet than in the control chickens. Therefore, DNE supplementation increased the expression of genes encoding mRNAs in antioxidant enzymes and reduced lipid peroxidation and drip loss in the pectoralis major muscle of broiler chickens.
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Li F, Liu L, Chen X, Zhang B, Li F. Dietary Copper Supplementation Increases Growth Performance by Increasing Feed Intake, Digestibility, and Antioxidant Activity in Rex Rabbits. Biol Trace Elem Res 2021; 199:4614-4623. [PMID: 33415583 DOI: 10.1007/s12011-020-02568-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 12/27/2020] [Indexed: 10/22/2022]
Abstract
Copper is often used as a growth promoter, at the same time copper is one of the most important essential trace elements for fur animals, especially Rex rabbits. However, too much copper added to the diet may harm animal health, and copper excreted in feces can pollute the environment. In this study, 3-month-old Rex rabbits were randomly divided into four groups and fed a basal diet containing 0, 30, 60, or 120 mg/kg Cu for 5 weeks. The diet supplemented with 30 mg/kg Cu significantly increased (P < 0.05) the average daily feed intake (ADFI) and the average daily gain (ADG) and also the activity of serum Cu-Zn (zinc) superoxide dismutase and the digestibility of ether extract. Supplemental Cu up to 120 mg/kg did not significantly adversely affect the Zn metabolism of growing Rex rabbits. Overall, the data in this study indicate that 30 mg/kg is the optimal level of Cu supplementation in the diet of growing Rex rabbits. The results will provide a reference to improve the breeding of Rex rabbits and possibly other animals. In follow-up studies, the amount of copper in the diet should be reduced as much as possible from the baseline of 30 mg/kg copper.
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Affiliation(s)
- Fan Li
- College of Animal Science and Technology, Shandong Agricultural University, Tai'an, 271018, People's Republic of China
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, 271018, People's Republic of China
| | - Lei Liu
- College of Animal Science and Technology, Shandong Agricultural University, Tai'an, 271018, People's Republic of China
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, 271018, People's Republic of China
| | - Xiaoyang Chen
- College of Animal Science and Technology, Shandong Agricultural University, Tai'an, 271018, People's Republic of China
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, 271018, People's Republic of China
| | - Bin Zhang
- College of Animal Science and Technology, Shandong Agricultural University, Tai'an, 271018, People's Republic of China
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, 271018, People's Republic of China
| | - Fuchang Li
- College of Animal Science and Technology, Shandong Agricultural University, Tai'an, 271018, People's Republic of China.
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, 271018, People's Republic of China.
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Jiang Q, Sun J, He Y, Ma Y, Zhang B, Han Y, Wu Y. Hydroxychloride trace elements improved eggshell quality partly by modulating uterus histological structure and inflammatory cytokines expression in aged laying hens. Poult Sci 2021; 100:101453. [PMID: 34624774 PMCID: PMC8503664 DOI: 10.1016/j.psj.2021.101453] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 07/21/2021] [Accepted: 08/26/2021] [Indexed: 11/17/2022] Open
Abstract
The objectives of this study were to investigate the effectiveness of dietary zinc, copper, and manganese hydroxychloride (HC) supplementation on performance, minerals deposition, serum parameters, eggshell ultrastructure, uterus histological structure, and inflammatory cytokines in aged hens. A total of 560 Hyline Brown layers at 62 wk of age were randomly allotted into 3 groups (CON, basal diet without extra minerals supplemented; Sulphate and HC, basal diet with sulphate or hydroxychloride zinc, copper, and manganese supplementation at levels of 80, 15, and 80 mg/kg, respectively). The trial lasted for 16 wk consisting of 4 wk depletion period and 12 wk testing period. The results indicated that dietary hydroxychloride trace elements increased egg weight (P < 0.05) when compared with CON group and improved average Haugh unit and albumen height (P < 0.05) when compared with Sulphate group from 70 to 73 wk. Trace element supplementation significantly increased eggshell strength, ceruloplasmin content in serum, and modified crystallographic structure of eggshell (P < 0.05) that included effective layer height, palisade height, mammillary layer width, and mammillary internal area ratio, but the results did not differ regarding the trace mineral sources used. Furthermore, hens fed with hydroxychloride trace element showed the highest mucosal fold height (P < 0.05) and epithelial height (P = 0.053) in eggshell gland, as well as mRNA expression of TNF-α (P < 0.05) and IL-22 (P = 0.094). It is concluded that supplementation of Zn, Cu, and Mn mixture modified eggshell quality partly through enhancing histological structure and immune responses of uterus. Hydroxychloride source of Zn, Cu, and Mn excelled sulphate in its beneficial effects for birds.
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Affiliation(s)
- Qiuyu Jiang
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing 100193, China
| | - Jingjing Sun
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing 100193, China
| | - Yang He
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing 100193, China
| | - Yanbo Ma
- Department of Animal Physiology, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China
| | - Bingkun Zhang
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing 100193, China.
| | - Yanming Han
- Trouw Nutrition R&D, Amersfoort, the Netherlands
| | - Yuanyuan Wu
- Trouw Nutrition R&D, Amersfoort, the Netherlands
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Jarosz ŁS, Ciszewski A, Grabowski S, Marek A, Grądzki Z, Żylińska B, Rysiak A. The effect of feed supplementation with a copper-glycine chelate and copper sulphate on cellular and humoral immune parameters in chickens. FOOD AGR IMMUNOL 2021. [DOI: 10.1080/09540105.2021.1954143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Affiliation(s)
- Łukasz S. Jarosz
- Department of Epizootiology and Clinic of Infectious Diseases, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Lublin, Poland
| | - Artur Ciszewski
- Department of Epizootiology and Clinic of Infectious Diseases, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Lublin, Poland
| | - Sebastian Grabowski
- Department of Epizootiology and Clinic of Infectious Diseases, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Lublin, Poland
| | - Agnieszka Marek
- Sub-Department of Preventive Veterinary and Avian Diseases, Faculty of Veterinary Medicine, Institute of Biological Bases of Animal Diseases, University of Life Sciences in Lublin, Lublin, Poland
| | - Zbigniew Grądzki
- Department of Epizootiology and Clinic of Infectious Diseases, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Lublin, Poland
| | - Beata Żylińska
- Department and Clinic of Animal Surgery, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Lublin, Poland
| | - Anna Rysiak
- Department of Botany, Mycology, and Ecology, Maria Curie-Skłodowska University, Lublin, Poland
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Kohrogi R, Shimamoto S, Nakashima K, Sonoda D, Ohtsuka A, Ijiri D. Effects of delaying post-hatch feeding on lipid peroxidation and antioxidant enzyme mRNA expression in the pectoralis major muscle of newly hatched chicks. Anim Sci J 2020; 91:e13327. [PMID: 32219959 DOI: 10.1111/asj.13327] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 11/24/2019] [Accepted: 12/09/2019] [Indexed: 11/27/2022]
Abstract
Excessive lipid peroxidation negatively affects the physiological response and meat quality of chickens. Delaying post-hatch feeding was previously found to increase lipid peroxidation in the skeletal muscle of finishing broiler chickens. The aims of this study were to investigate the effects of delayed post-hatch feeding on lipid peroxidation and the mRNA expressions of antioxidant enzymes in the pectoralis major muscle of broiler chicks during the post-hatching period. Newly hatched chicks either had immediate free access to feed (freely-fed chicks) or had no access to feed from 0 to 2 days old (delayed-fed chicks), after which both groups were fed ad libitum until 4 or 13 days old. The lipid peroxidation level was higher in the delayed-fed than freely-fed chicks at 2, 4, and 13 days old. At 2 days old, the mRNA expressions of Cu/Zn-SOD, Mn-SOD, and GPX7 were lower in the delayed-fed than freely-fed chicks, while catalase mRNA levels did not differ. Furthermore, at 4 and 13 days old, lower mRNA expressions of Cu/Zn-SOD and Mn-SOD were observed in the delayed-fed than freely-fed chicks. These results suggest that delaying post-hatch feeding reduces the mRNA levels of Cu/Zn-SOD and Mn-SOD, consequently affecting muscle lipid peroxidation in chicks during subsequent growth.
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Affiliation(s)
- Rukana Kohrogi
- Department of Biochemical Science and Technology, Kagoshima University, Kagoshima, Japan
| | - Saki Shimamoto
- Department of Biochemical Science and Technology, Kagoshima University, Kagoshima, Japan.,The United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima, Japan
| | - Kazuki Nakashima
- Division of Animal Metabolism and Nutrition, Institute of Livestock and Grassland Science, NARO, Ibaraki, Japan
| | - Daichi Sonoda
- Department of Biochemical Science and Technology, Kagoshima University, Kagoshima, Japan
| | - Akira Ohtsuka
- Department of Biochemical Science and Technology, Kagoshima University, Kagoshima, Japan.,The United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima, Japan
| | - Daichi Ijiri
- Department of Biochemical Science and Technology, Kagoshima University, Kagoshima, Japan.,The United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima, Japan
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