Effects of Rumen Protected Choline on Growth, Digestion, Serum Indices and Meat Quality of Lambs

LI Huawei, WANG Hongrong, WANG Mengzhi, YU Lihuai, SUN Lisha, CHEN Qing, ZHAO Rui, CUI Huihui

doi:10.3969/j.issn.1006-267x.2015.04.015

Chinese Journal of Animal Nutrition >

2015 , Vol. 27 >Issue 4: 1117 - 1123

DOI: https://doi.org/10.3969/j.issn.1006-267x.2015.04.015

Ruminant Nutrition

Effects of Rumen Protected Choline on Growth, Digestion, Serum Indices and Meat Quality of Lambs

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College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China

Received date: 2014-11-05

Online published: 2015-04-21

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Abstract

The aim of this research was to study the effects of rumen protected choline (RPC) on growth, digestion, serum indices and meat quality of lambs. Twenty four Doper×Hu F1 male lambs were randomly divided into control group, group Ⅰ, group Ⅱ and group Ⅲ (RPC level in diets was 0, 0.25%, 0.50% and 0.75%, respectively) according to similar body weight. The experiment had a 15-day pre-experiment and a 60-day experiment. The results showed that dry matter intake was not affected by RPC (P>0.05), and RPC significantly improved apparent digestibility of dry matter, crude protein, organic matter, neutral detergent fiber and acid detergent fiber (P<0.05 or P<0.01). Compare with control group, average net gain and average daily gain in group Ⅰ were significantly improved (P < 0.05 or P<0.01), and feed to gain ratio and serum urea nitrogen content in group Ⅰ were significantly decreased (P < 0.05), while there were no significant differences in serum total protein, creatinine contents and creatine kinase activity (P > 0.05). The dressing percentage has no significant difference among groups, but group Ⅰ had significant lower shear force of meat (P<0.01), and slowed down meat pH decrease rate at 12 h post-slaughter. It is concluded that the supplementation of RPC at 0.25% can decrease feed to gain ratio, improve nutrient digestibility, nitrogen utilization and meat quality.

Key words： rumen protected choline; lamb; growth performance; meat quality

Cite this article

LI Huawei, WANG Hongrong, WANG Mengzhi, YU Lihuai, SUN Lisha, CHEN Qing, ZHAO Rui, CUI Huihui . Effects of Rumen Protected Choline on Growth, Digestion, Serum Indices and Meat Quality of Lambs[J]. Chinese Journal of Animal Nutrition, 2015 , 27(4) : 1117 -1123 . DOI: 10.3969/j.issn.1006-267x.2015.04.015

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