Effects of Rumen-Protected Methionine on Growth Performance, Nutrient Apparent Digestibility, Plasma Biochemical Indices and Rumen Fermentation of Qianbeima Goats

LI Haixia, YANG Meiying, WU Wenhai, CHEN Tongsheng, PENG Darong, WU Wenxuan

doi:10.3969/j.issn.1006-267x.2019.06.055

2019 , Vol. 31 >Issue 6: 2933 - 2940

DOI: https://doi.org/10.3969/j.issn.1006-267x.2019.06.055

Molecular Nutrition

Effects of Rumen-Protected Methionine on Growth Performance, Nutrient Apparent Digestibility, Plasma Biochemical Indices and Rumen Fermentation of Qianbeima Goats

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1. Institute of Animal Nutrition and Feed Science, College of Animal Science, Guizhou University, Guiyang 550025, China;
2. Institute of New Rural Development, Guizhou University, Guiyang 550025, China;
3. Engineering Key Laboratory of Plateau Mountain Livestock Pollution Control and Resource Reuse Technology of Guizhou Province, Guiyang 550025, China

Received date: 2018-09-29

Online published: 2019-06-17

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Abstract

This study was conducted to investigate the effects of rumen-protected methionine (RPMet) on growth performance, nutrient apparent digestibility, plasma biochemical indices and rumen fermentation of Qianbeima goats. Eighteen healthy goats with similar body weight[(27.08±2.92) kg] and age were randomly assigned to 3 groups with 6 replicates per group and 1 goat per replicate. Goats in the control group were fed a basal diet, and the others in groups Ⅰ and Ⅱ were fed the basal diets supplemented with 5 and 10 g/d RPMet per goat, respectively. The pre-experimental period lasted for 14 days, and the experimental period lasted for 7 days. The results showed as follows:1) there were no significant differences in growth performance indices of goats among all groups (P>0.05). 2) The crude protein apparent digestibility of group Ⅱ was significantly higher than that of the control group (P<0.05), and there was no significant difference in other nutrient apparent digestibility among all groups (P>0.05). 3) There were no significant differences in plasma biochemical indices among all groups (P>0.05). 4) There were no significant differences in ruminal pH and volatile fatty acids concentration among all groups (P>0.05). It is suggested that base on the present feeding standard, dietary supplemented 10 g/d RPMet can increase the crude protein apparent digestibility, and have no effects on growth performance, plasma biochemical indices and rumen fermentation of Qianbeima goats.

Key words： rumen-protected methionine; apparent digestibility; plasma biochemical indices; rumen fermentation; Qianbeima goats

Cite this article

LI Haixia, YANG Meiying, WU Wenhai, CHEN Tongsheng, PENG Darong, WU Wenxuan . Effects of Rumen-Protected Methionine on Growth Performance, Nutrient Apparent Digestibility, Plasma Biochemical Indices and Rumen Fermentation of Qianbeima Goats[J]. Chinese Journal of Animal Nutrition, 2019 , 31(6) : 2933 -2940 . DOI: 10.3969/j.issn.1006-267x.2019.06.055

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