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Supplementation of graded levels of rumen-protected choline to a pelleted total mixed ration did not improve the growth and slaughter performance of fattening lambs

Choline is an essential nutrient in ruminant diets, which contributes to the fundamental biological functions of the animal. However, choline is easily degraded in the rumen before it can be absorbed. Rumen-protected choline (RPC) supplementation might support the fast growth of ruminants. This stud...

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Autores principales: Huo, Qin, Sun, Xuezhao, Wu, Tingting, Li, Zelin, Jonker, Arjan, You, Peihua, Li, Rongquan, Li, Jianping, Tian, Wannian, Li, Changsheng, Wang, Chunqing, He, Yuhua, Rugoho, Innocent, Cheng, Long, You, Meng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9726755/
https://www.ncbi.nlm.nih.gov/pubmed/36504853
http://dx.doi.org/10.3389/fvets.2022.1034895
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author Huo, Qin
Sun, Xuezhao
Wu, Tingting
Li, Zelin
Jonker, Arjan
You, Peihua
Li, Rongquan
Li, Jianping
Tian, Wannian
Li, Changsheng
Wang, Chunqing
He, Yuhua
Rugoho, Innocent
Cheng, Long
You, Meng
author_facet Huo, Qin
Sun, Xuezhao
Wu, Tingting
Li, Zelin
Jonker, Arjan
You, Peihua
Li, Rongquan
Li, Jianping
Tian, Wannian
Li, Changsheng
Wang, Chunqing
He, Yuhua
Rugoho, Innocent
Cheng, Long
You, Meng
author_sort Huo, Qin
collection PubMed
description Choline is an essential nutrient in ruminant diets, which contributes to the fundamental biological functions of the animal. However, choline is easily degraded in the rumen before it can be absorbed. Rumen-protected choline (RPC) supplementation might support the fast growth of ruminants. This study aimed to investigate the effects of supplementing graded levels of RPC in a pelleted total mixed ration for fattening lambs. Sixty three-month-old male Small Tail Han and northeast fine wool sheep hybrid lambs with a liveweight of 15.3 ± 1.8 kg (mean ± SD) were fed designated diets and randomly assigned into five treatment groups (n = 12 per group). The five treatments were the rate of RPC supplementation at 0, 1.25, 2.50, 3.75, and 5.00 g (equivalent to 0, 0.31, 0.63, 0.94, and 1.25 g of choline chloride, respectively)/kg basal diet and the RPC-supplemented feed was offered for 112 days after 12 days of adaptation. Average daily gain, dry matter intake, and nutrient digestibility were similar across treatments. The rumen pH was quadratically significant among treatments, with the lowest and highest pH observed from the 2.5 and 5 g/kg RPC supplement groups, respectively (P = 0.02). After feeding, the ruminal ammonia concentrations among treatments were different (P < 0.05), with the highest value observed from the 5 g/kg RPC supplement group. Microbial crude protein level was different, with the highest value recorded from the 0 g/kg RPC supplement group (P = 0.028). A linear effect (P < 0.05) was observed from short-chain fatty acid values among treatments before and after feeding. Serum albumin (P = 0.003) and albumin/globulin ratio (P = 0.002) had a quadratic effect, with the highest value found in the 0 g/kg RPC supplement group. Abdominal fat was higher in RPC-supplemented groups (P < 0.05) compared to the control group. Drip loss was 65% higher in RPC-supplemented groups compared to the control group (P = 0.012). Overall, the study results showed an effect of RPC on ruminal parameters, but the supplementation of low-level RPC did not improve the growth and slaughter performance of fattening lambs.
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spelling pubmed-97267552022-12-08 Supplementation of graded levels of rumen-protected choline to a pelleted total mixed ration did not improve the growth and slaughter performance of fattening lambs Huo, Qin Sun, Xuezhao Wu, Tingting Li, Zelin Jonker, Arjan You, Peihua Li, Rongquan Li, Jianping Tian, Wannian Li, Changsheng Wang, Chunqing He, Yuhua Rugoho, Innocent Cheng, Long You, Meng Front Vet Sci Veterinary Science Choline is an essential nutrient in ruminant diets, which contributes to the fundamental biological functions of the animal. However, choline is easily degraded in the rumen before it can be absorbed. Rumen-protected choline (RPC) supplementation might support the fast growth of ruminants. This study aimed to investigate the effects of supplementing graded levels of RPC in a pelleted total mixed ration for fattening lambs. Sixty three-month-old male Small Tail Han and northeast fine wool sheep hybrid lambs with a liveweight of 15.3 ± 1.8 kg (mean ± SD) were fed designated diets and randomly assigned into five treatment groups (n = 12 per group). The five treatments were the rate of RPC supplementation at 0, 1.25, 2.50, 3.75, and 5.00 g (equivalent to 0, 0.31, 0.63, 0.94, and 1.25 g of choline chloride, respectively)/kg basal diet and the RPC-supplemented feed was offered for 112 days after 12 days of adaptation. Average daily gain, dry matter intake, and nutrient digestibility were similar across treatments. The rumen pH was quadratically significant among treatments, with the lowest and highest pH observed from the 2.5 and 5 g/kg RPC supplement groups, respectively (P = 0.02). After feeding, the ruminal ammonia concentrations among treatments were different (P < 0.05), with the highest value observed from the 5 g/kg RPC supplement group. Microbial crude protein level was different, with the highest value recorded from the 0 g/kg RPC supplement group (P = 0.028). A linear effect (P < 0.05) was observed from short-chain fatty acid values among treatments before and after feeding. Serum albumin (P = 0.003) and albumin/globulin ratio (P = 0.002) had a quadratic effect, with the highest value found in the 0 g/kg RPC supplement group. Abdominal fat was higher in RPC-supplemented groups (P < 0.05) compared to the control group. Drip loss was 65% higher in RPC-supplemented groups compared to the control group (P = 0.012). Overall, the study results showed an effect of RPC on ruminal parameters, but the supplementation of low-level RPC did not improve the growth and slaughter performance of fattening lambs. Frontiers Media S.A. 2022-11-23 /pmc/articles/PMC9726755/ /pubmed/36504853 http://dx.doi.org/10.3389/fvets.2022.1034895 Text en Copyright © 2022 Huo, Sun, Wu, Li, Jonker, You, Li, Li, Tian, Li, Wang, He, Rugoho, Cheng and You. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Veterinary Science
Huo, Qin
Sun, Xuezhao
Wu, Tingting
Li, Zelin
Jonker, Arjan
You, Peihua
Li, Rongquan
Li, Jianping
Tian, Wannian
Li, Changsheng
Wang, Chunqing
He, Yuhua
Rugoho, Innocent
Cheng, Long
You, Meng
Supplementation of graded levels of rumen-protected choline to a pelleted total mixed ration did not improve the growth and slaughter performance of fattening lambs
title Supplementation of graded levels of rumen-protected choline to a pelleted total mixed ration did not improve the growth and slaughter performance of fattening lambs
title_full Supplementation of graded levels of rumen-protected choline to a pelleted total mixed ration did not improve the growth and slaughter performance of fattening lambs
title_fullStr Supplementation of graded levels of rumen-protected choline to a pelleted total mixed ration did not improve the growth and slaughter performance of fattening lambs
title_full_unstemmed Supplementation of graded levels of rumen-protected choline to a pelleted total mixed ration did not improve the growth and slaughter performance of fattening lambs
title_short Supplementation of graded levels of rumen-protected choline to a pelleted total mixed ration did not improve the growth and slaughter performance of fattening lambs
title_sort supplementation of graded levels of rumen-protected choline to a pelleted total mixed ration did not improve the growth and slaughter performance of fattening lambs
topic Veterinary Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9726755/
https://www.ncbi.nlm.nih.gov/pubmed/36504853
http://dx.doi.org/10.3389/fvets.2022.1034895
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