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Chaji M, Jahanara Z. Use of tannase-producing bacteria isolated from the rumen to improve the nutritional value of pomegranate peel for fattening lambs. Vet Med Sci 2024; 10:e31347. [PMID: 38227709 PMCID: PMC10790326 DOI: 10.1002/vms3.1347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 10/05/2023] [Accepted: 12/10/2023] [Indexed: 01/18/2024] Open
Abstract
BACKGROUND The use of plants and by-products, which are containing a high amount of secondary and anti-nutritional compounds such as tannins, in animal feed is limited. The methods that can reduce these compounds make facilitate their use in animal feed. OBJECTIVES The aim of this study was to reduce the adverse effects of pomegranate peel (PP) tannin for fattening lambs using the tannase-producing bacteria. METHODS Twenty-one Arabi male lambs (averagely 35 ± 3.8 kg weight and 8 ± 1.0 months age) were used in a completely randomized design with three treatments and seven replications in the present experiment. The experimental treatments included 1 - control diet (CNT, no PP), 2 - diet containing untreated PP (raw PP, UTPP) and 3 - diet containing PP treated with tannase-producing bacteria (bacteria treating PP, BTPP). RESULTS Using UTPP decreased nutrient intake compared to the control and treatment with tannase-producing bacteria again significantly increased nutrient intake compared to the UTPP (p < 0.05). The digestibilities of organic matter, neutral detergent fibre and acid detergent fibre in the control treatment were significantly higher than UTPP and BTPP and in the BTPP were significantly higher than the UTPP (p < 0.05). The use of UTPP in the diet significantly decreased the pH, ammonia nitrogen concentration and the total protozoa population of the rumen compared to the control (p < 0.05), and treatment with bacteria increased them again. The lowest total protozoa population was observed in UTPP treatments (p < 0.05). The highest concentration of blood glucose was observed in UTPP; however, the highest concentrations of blood urea nitrogen, cholesterol, triglyceride, high-density lipoprotein (non-significant) and low-density lipoprotein were in the control treatment. The effect of experimental treatments on the dry matter consumption of the whole period was significant; however, there was no significant effect on average daily gain, feed conversion ratio, feed efficiency and longissimus muscle colorimetric systems. CONCLUSIONS Therefore, considering the positive effects of treatment PP with tannin-degrading bacteria relative to raw PP, using these bacteria is a proper way to reduce tannin, thus improving the nutritional value of PP for ruminants.
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Affiliation(s)
- Morteza Chaji
- Department of Animal ScienceFaculty of Animal Science and Food TechnologyAgricultural Sciences and Natural Resources University of Khuzestan, MollasaniAhvazKhuzestanIran
| | - Zahra Jahanara
- Department of Animal ScienceFaculty of Animal Science and Food TechnologyAgricultural Sciences and Natural Resources University of Khuzestan, MollasaniAhvazKhuzestanIran
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Effects of Dietary Tannins’ Supplementation on Growth Performance, Rumen Fermentation, and Enteric Methane Emissions in Beef Cattle: A Meta-Analysis. SUSTAINABILITY 2021. [DOI: 10.3390/su13137410] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The environmental sustainability of beef production is a significant concern within the food production system. Tannins (TANs) can be used to minimize the environmental impact of ruminant production because they can improve ruminal fermentation and ruminants’ lifetime performances and mitigate methane (CH4) emissions. The objective of this study was to evaluate the effects of dietary supplementation with TANs as sustainable natural alternative to reduce the environmental impact on growth performance, rumen fermentation, enteric CH4 emissions, and nitrogen (N) use efficiency of beef cattle through a meta-analysis. A comprehensive search of studies published in scientific journals that investigated the effects of TANs’ supplementation on the variables of interest was performed using the Scopus, Web of Science, and PubMed databases. The data analyzed were extracted from 32 peer-reviewed publications. The effects of TANs were assessed using random-effects statistical models to examine the standardized mean difference (SMD) between TANs’ treatments and control (non-TANs). The heterogeneity was explored by meta-regression and subgroup analysis was performed for the covariates that were significant. TANs’ supplementation did not affect weight gain, feed consumption, feed efficiency, or N use efficiency (p > 0.05). However, it reduced the concentration of ammonia nitrogen in rumen (SMD = −0.508, p < 0.001), CH4 emissions per day (SMD = −0.474, p < 0.01) and per unit dry matter intake (SMD = −0.408, p < 0.01), urinary N excretion (SMD = −0.338, p < 0.05), and dry matter digestibility (SMD = −0.589, p < 0.001). Ruminal propionate (SMD = 0.250) and butyrate (SMD = 0.198) concentrations and fecal N excretion (SMD = 0.860) improved in response to TANs’ supplementation (p < 0.05). In conclusion, it is possible to use TANs as a CH4 mitigation strategy without affecting cattle growth rate. In addition, the shift from urinary to fecal N may be beneficial for environment preservation, as urinary N induces more harmful emissions than fecal N. Therefore, the addition of tannins in the diet of beef cattle could be used as a sustainable natural alternative to reduce the environmental impact of beef production.
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Zhang X, Wang H, You W, Zhao H, Wei C, Jin Q, Liu X, Liu G, Tan X, Wang X, Wan F, Sun X. In vitro degradability of corn silage and Leymus chinensis silage and evaluation of their mixed ratios on performance, digestion and serum parameters in beef cattle. J Anim Physiol Anim Nutr (Berl) 2020; 104:1628-1636. [PMID: 32525268 DOI: 10.1111/jpn.13392] [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: 10/04/2019] [Revised: 04/23/2020] [Accepted: 05/07/2020] [Indexed: 11/28/2022]
Abstract
This study investigated the degradability of corn silage (CS) and Leymus chinensis silage (LS) in vitro, and evaluated the effect of various ratios on growth performance, digestion and serum parameters in beef cattle. A 72-hr bath culture trial was performed to evaluate degradability and rumen fermentation characteristics of CS, LS and their combinations [67:33, 33:67, dry matter (DM) basis]. Forty Simmental steers, averaging 441.46 ± 4.45 kg of body weight (BW), were randomly allocated into four dietary treatments for 120-d period. Diets were given as total mixed rations with a forage-to-concentrate ratio of 60:40 and CS:LS ratios of 100:0, 67:33, 33:67 and 0:100 (DM basis). The in vitro trial showed that DM and neutral detergent fibre (NDF) degradability decreased linearly as LS proportion increased, whereas CP degradability increased linearly. Additionally, increased acid detergent fibre (ADF) degradability was detected at 48 hr of incubation. Increasing the proportion of LS increased rumen liquor pH and decreased volatile fatty acid linearly including acetate, propionate and butyrate, whereas the ammonia-N increased linearly at 12 and 72 hr of incubation. With increasing LS ratio, final BW, average daily gain and feed conversion ratio of steers decreased linearly, whereas DMI was not affected. Additionally, apparent digestibility of DM, organic matter, NDF and ADF linearly and quadratically decreased while ether extract apparent digestibility decreased linearly, and CP apparent digestibility was not affected. Serum glucose and urea nitrogen linearly and quadratically decreased while glutamic-pyruvic transaminase activity linearly decreased as the proportion of LS increased. Other serum parameters including total triglycerides, total cholesterol, total protein, albumin and glutamic-oxalacetic transaminease were not affected. Overall, enhancing ratio of LS caused inferior DM and NDF degradability but improved CP degradability in the combinations of LS and CS. A CS:LS ratio of 67:33 resulted in the best growth performance and nutrient utilization in steers.
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Affiliation(s)
- Xianglun Zhang
- Institute of Animal Science and Veterinary Medicine, Shandong Key Lab of Animal Disease Control and Breeding, Shandong Provincial Testing Center of Beef Cattle Performance, Shandong Provincial Engineering Technology Center of Animal Healthy Breeding, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Hongliang Wang
- Animal Husbandry and Veterinary Institute, Heilongjiang Academy of Land Reclamation Sciences, Harbin, China
| | - Wei You
- Institute of Animal Science and Veterinary Medicine, Shandong Key Lab of Animal Disease Control and Breeding, Shandong Provincial Testing Center of Beef Cattle Performance, Shandong Provincial Engineering Technology Center of Animal Healthy Breeding, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Hongbo Zhao
- Institute of Animal Science and Veterinary Medicine, Shandong Key Lab of Animal Disease Control and Breeding, Shandong Provincial Testing Center of Beef Cattle Performance, Shandong Provincial Engineering Technology Center of Animal Healthy Breeding, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Chen Wei
- Institute of Animal Science and Veterinary Medicine, Shandong Key Lab of Animal Disease Control and Breeding, Shandong Provincial Testing Center of Beef Cattle Performance, Shandong Provincial Engineering Technology Center of Animal Healthy Breeding, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Qing Jin
- Institute of Animal Science and Veterinary Medicine, Shandong Key Lab of Animal Disease Control and Breeding, Shandong Provincial Testing Center of Beef Cattle Performance, Shandong Provincial Engineering Technology Center of Animal Healthy Breeding, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Xiaomu Liu
- Institute of Animal Science and Veterinary Medicine, Shandong Key Lab of Animal Disease Control and Breeding, Shandong Provincial Testing Center of Beef Cattle Performance, Shandong Provincial Engineering Technology Center of Animal Healthy Breeding, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Guifen Liu
- Institute of Animal Science and Veterinary Medicine, Shandong Key Lab of Animal Disease Control and Breeding, Shandong Provincial Testing Center of Beef Cattle Performance, Shandong Provincial Engineering Technology Center of Animal Healthy Breeding, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Xiuwen Tan
- Institute of Animal Science and Veterinary Medicine, Shandong Key Lab of Animal Disease Control and Breeding, Shandong Provincial Testing Center of Beef Cattle Performance, Shandong Provincial Engineering Technology Center of Animal Healthy Breeding, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Xingling Wang
- Institute of Animal Science and Veterinary Medicine, Shandong Key Lab of Animal Disease Control and Breeding, Shandong Provincial Testing Center of Beef Cattle Performance, Shandong Provincial Engineering Technology Center of Animal Healthy Breeding, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Fachun Wan
- Institute of Animal Science and Veterinary Medicine, Shandong Key Lab of Animal Disease Control and Breeding, Shandong Provincial Testing Center of Beef Cattle Performance, Shandong Provincial Engineering Technology Center of Animal Healthy Breeding, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Xiaoyu Sun
- Animal Husbandry and Veterinary Institute, Heilongjiang Academy of Land Reclamation Sciences, Harbin, China
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Majewska MP, Kowalik B. Growth Performance, Carcass Characteristics, Fatty Acid Composition, and Blood Biochemical Parameters of Lamb Fed Diet with the Addition of Lingonberry Leaves and Oak Bark. EUR J LIPID SCI TECH 2019. [DOI: 10.1002/ejlt.201900273] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Małgorzata P. Majewska
- Department of Animal Nutrition The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences Instytucka 3, 05‐110 Jabłonna Poland
| | - Barbara Kowalik
- Department of Animal Nutrition The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences Instytucka 3, 05‐110 Jabłonna Poland
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Habib MR, Rashid MH, Islam MA, Majumder S, Islam KMS, Ahmed S, Alam MS, Vargas-Bello-Pérez E. Influence of green grass-based diets on growth and reproductive performance in dairy heifers. Trop Anim Health Prod 2018; 50:889-895. [PMID: 29374345 DOI: 10.1007/s11250-018-1514-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 01/17/2018] [Indexed: 10/18/2022]
Abstract
The objective of this study was to monitor the changes in growth, dry matter intake, and blood profiles (nutrition and reproductive hormones) of dairy heifers in response to green grass-based diets. Twelve crossbred heifers were equally divided into group 1: rice straw and concentrate; group 2: rice straw, green grass, and concentrate; group 3: green grass and concentrate; group 4: green grass, soybean hay, and concentrate. Dry matter intake in group 4 was found 6% higher (P < 0.05) than group 1. Negative body weight gain was found in group 1 and group 2 showed 14% higher body weight gain per 30 days compared to groups 3 and 4 (P < 0.05). Heifers in group 4 had significantly (P < 0.05) higher heart girth gain, serum albumin, urea, and blood urea nitrogen than the heifers in other groups. Endocrine parameters were found similar among groups. Overall, supply of green grass especially a mix of leguminous and non-leguminous was found advantageous in heifer feeding.
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Affiliation(s)
- M R Habib
- Department of Dairy Science, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - M H Rashid
- Department of Dairy Science, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - M A Islam
- Department of Dairy Science, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - S Majumder
- Department of Agricultural Statistics, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - K M S Islam
- Department of Animal Nutrition, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - S Ahmed
- Department of Dairy and Poultry Science, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, 1706, Bangladesh
| | - M S Alam
- Department of Dairy and Poultry Science, Hajee Mohammad Danesh Science and Technology University, Dinajpur, 5200, Bangladesh
| | - E Vargas-Bello-Pérez
- Departamento de Ciencias Animales, Facultad de Agronomía e Ingeniería Forestal, Pontificia Universidad Católica de Chile, Casilla 306, C.P. 6904411, Santiago, Chile.
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Bezerra LR, Oliveira WD, Silva TP, Torreão JN, Marques CA, Araújo MJ, Oliveira RL. Comparative hematological analysis of Morada Nova and Santa Inês ewes in all reproductive stages. PESQUISA VETERINÁRIA BRASILEIRA 2017. [DOI: 10.1590/s0100-736x2017000400017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
ABSTRACT: Hematologic analysis provides reliable information on the health status of animals. It is an important variable in the assessment of adaptive and productive capacity of breeds under unfavorable environmental conditions. It is an assessment that combined with other genetic and environmental factors and management can become useful for the future sustainability of mainstream agriculture in a hot environment. Adaptive capacity is affected by some factors such as breed, pregnancy and lactation. Therefore, hematological profile is an important indicator of animal health and production. The objective of this study was to perform the comparative hematological analysis of Santa Inês and Morada Nova breeds (native ewes from Brazil) in all different reproductive stages. Twenty Santa Ines and 20 Morada Nova sheep distributed in a completely randomized design in a split-plot arrangement over time were used. To obtain blood counts, blood samples were collected by jugular venipuncture every 14 days, always in the morning, before the animals were released into the pasture. The Morada Nova breed had higher hemoglobin and total leukocyte count than Santa Inês breed. Regarding the influence of pregnancy and puerperium on the eritrogram, there was an increment in red blood cell, hemoglobin and packed cell volume of both breeds in middle pregnancy. However, had a reduction in late pregnancy. There were a reestablishment of the blood cell counts during the puerperium period. It was verified an increase on neutrophil: lymphocyte ratio indicated that ewes in the late pregnancy, postpartum and puerperium were under stress conditions compared to others reproductive stages. The total plasma proteins also increased during this period to compensate for the high nutritional requirements of the fetus, and these levels remained high until the end of the puerperal phase, when the lambs were weaned. The pregnancy and puerperium influenced all erythrocyte indices and changed the total leukocyte count.
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Guil-Guerrero J, Ramos L, Moreno C, Zúñiga-Paredes J, Carlosama-Yépez M, Ruales P. Plant-food by-products to improve farm-animal health. Anim Feed Sci Technol 2016. [DOI: 10.1016/j.anifeedsci.2016.07.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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8
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Shakeri P. Pistachio by-product as an alternative forage source for male lambs: Effects on performance, blood metabolites, and urine characteristics. Anim Feed Sci Technol 2016. [DOI: 10.1016/j.anifeedsci.2015.11.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Mokhtarpour A, Naserian AA, Pourmollae F, Ghaffari MH. Effect of treating alfalfa silage with pistachio by-products extract on Saanen dairy goats performance and microbial nitrogen synthesis. J Anim Physiol Anim Nutr (Berl) 2015; 100:758-67. [PMID: 26336063 DOI: 10.1111/jpn.12384] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2015] [Accepted: 07/10/2015] [Indexed: 11/27/2022]
Abstract
A lactation experiment was conducted to determine the influence of addition of pistachio by-products extract (PBE) to alfalfa silage (AS) on performance, rumen fermentation, milk yield and composition, and microbial nitrogen synthesis. Eight multiparous dairy goats (1.8 ± 0.25 kg of milk yield) were used in a replicated 4 × 4 Latin square design with a 2 × 2 factorial arrangement of treatments to compare two types of AS (supplemented with or without PBE) with two levels of dietary crude protein (14% vs. 16% CP). Dietary treatments were (i) AS with 14% CP of DM diet without PBE (14%CP-PBE), (ii) AS with 14% CP of DM diet with PBE (14%CP + PBE), (iii) AS with 16% CP of DM diet without PBE (16%CP-PBE) and (iv) AS with 16% CP of DM diet with PBE (16%CP + PBE). PBE was sprayed on fresh alfalfa at a ratio of 500 ml/kg alfalfa DM to get the final concentration of 1% tannin as tannic acid equivalent on DM basis. Intake of CP was greater (p < 0.01) in goats fed 16% CP diets than those fed 14% CP diets, regardless of PBE supplementation. Supplementation of PBE tended to decrease (p = 0.09) rumen NH3 -N concentration regardless of the level of CP in the diet. Supplementation of PBE tended (p = 0.09) to decrease total purine derivatives regardless of the level of CP in the diet with no significant change in microbial nitrogen supply. Efficiency of microbial nitrogen synthesis (EMNS) had a tendency (p = 0.07) to decrease in PBE supplemented diets. There was also a tendency (p = 0.10) for more EMNS in 14% CP fed goats than those fed 16% CP diets. Therefore, AS supplemented with PBE may lead to less concentration of ruminal NH3 -N because of decreased degradation of CP by rumen micro-organisms in response to pistachio by-products tannins.
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Affiliation(s)
- A Mokhtarpour
- Research Center of Special Domestic Animals, University of Zabol, Zabol, Iran.,Department of Animal Science, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
| | - A A Naserian
- Department of Animal Science, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
| | - F Pourmollae
- Agricultural Jihad Organization of Khorasan-Razavi, Mashhad, Iran
| | - M H Ghaffari
- Department of Animal Science, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
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Naserian AA, Staples CR, Ghaffari MH. Effects of replacing wheat bran by pistachio skins on feed intake, nutrient digestibility, milk yield, milk composition and blood metabolites of dairy Saanen goats. J Anim Physiol Anim Nutr (Berl) 2015; 100:256-63. [PMID: 26174030 DOI: 10.1111/jpn.12362] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2015] [Accepted: 05/29/2015] [Indexed: 11/27/2022]
Abstract
The objective of this study was to investigate the effect of pistachio skins (PiS) as a replacement of wheat bran on feed intake, nutrient digestibility, milk yield, milk composition and blood metabolites of dairy Saanen goats. Eight multiparous lactating Saanen goats (55 ± 7.2 days post-partum, 45 ± 2 kg body weight) were randomly assigned to one of the four dietary treatments arranged in a replicated 4 × 4 Latin square design. The dietary treatments were 1) 0 g/kg PiS and 210 g/kg wheat bran in the TMR (0PiS), 2) 70 g/kg PiS and 140 g/kg wheat bran in the TMR (7PiS), 3) 140 g/kg PiS and 70 g/kg wheat bran in the TMR (14PiS) and 4) 210 g/kg PiS and 0 g/kg wheat bran in the TMR (21PiS). The trial consisted of four 21-day periods, each composed of 14 days adaptation and 7 days data collection. Dry matter intake (p < 0.05) and crude protein digestibility (p < 0.01) increased linearly with increasing PiS proportions in the diet. Increasing the proportion of PiS in the diet caused a quadratic increase in apparent digestibility of dry matter (p < 0.05), and tended (p = 0.05) to increase quadratically organic matter, and ether extract digestibility. Replacing wheat bran with PiS in the diet had no effects on milk yield, whereas milk fat concentration increased linearly (p < 0.01) with increasing inclusion of PiS in the diet. As the dietary proportion of PiS increased, ruminal pH tended (p = 0.07) to increase linearly, whereas ammonia-N concentration declined in the rumen. Plasma concentrations of glucose and BUN remained unaffected, whereas triglycerides (p < 0.05) and cholesterol (p < 0.01) concentrations increased linearly with increasing inclusion of PiS in the diet. It was concluded that PiS based on local ingredients can successfully replace wheat bran in diets of dairy goats without detrimental effects on feed intake, nutrient digestibility and milk production.
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Affiliation(s)
- A A Naserian
- Department of Animal Sciences, College of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
| | - C R Staples
- Department of Animal Science, University of Florida, Gainesville, FL, USA
| | - M H Ghaffari
- Department of Animal Sciences, College of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
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Moradi M, Behgar M, Afzalzadeh A, Norouzian M. Effects of electron irradiation, sodium hydroxide and poly ethylene glycol on the utilization of pistachio by-products by Zandi male lambs. Small Rumin Res 2015. [DOI: 10.1016/j.smallrumres.2015.04.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Effects of long period feeding pistachio by-product silage on chewing activity, nutrient digestibility and ruminal fermentation parameters of Holstein male calves. Animal 2014; 8:1826-31. [DOI: 10.1017/s1751731114001621] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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