Effects of Peanut Vine Instead of Alfalfa in Granulated Total Mixed Ration on Growth Performance, Rumen Fermentation and Serum Biochemical Indexes of Hubei Black-Head Goats

SUO Xiaojun, ZHANG Nian, YANG Qianping, TAO Hu, XIONG Qi, LI Xiaofeng, CHEN Mingxin

doi:10.3969/j.issn.1006-267x.2019.02.043

2019 , Vol. 31 >Issue 2: 865 - 873

DOI: https://doi.org/10.3969/j.issn.1006-267x.2019.02.043

Molecular Nutrition

Effects of Peanut Vine Instead of Alfalfa in Granulated Total Mixed Ration on Growth Performance, Rumen Fermentation and Serum Biochemical Indexes of Hubei Black-Head Goats

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1. Institute of Animal Science, Hubei Academy of Agricultural Sciences, Wuhan 430064, China;
2. Hubei Key Laboratory of Animal Embryo and Molecular Breeding, Wuhan 430064, China

Received date: 2018-07-01

Online published: 2019-02-18

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Abstract

This experiment was conducted to study the effects of peanut vine instead of alfalfa in granulated total mixed ration (TMR) on growth performance, rumen fermentation and serum biochemical indexes of Hubei black-head goats, in order to provide some basis for the reasonable roughage feeding during black-head goat fattening. Thirty 8-month-old Hubei black-head goats (wethers) with similar body weight[(20.46±3.23) kg] and those in good physical condition were randomly divided into 3 groups with 10 goats per group. The animals were fed granulated TMR, in which the roughage was derived from peanut vine (group Ⅰ), alfalfa (group Ⅱ) or alfalfa+peanut vine (group Ⅲ). The experimental period was 60 days, including a 10-day pre-experimental period and a 50-day formal trial period. The animals were weighed after the experiment. Rumen fluid and blood samples were collected to assess rumen fluid volatile fatty acids (VFA) and ammoniacal nitrogen (NH₃-N) concentrations and serum total albumen (TP), albumin (ALB), urea nitrogen (UN), glucose (GLU) contents, etc. The results showed as follows:1) groups Ⅱ and Ⅲ had a significantly higher average daily gain (ADG) with a significantly decreased feed/gain (F/G) relative to group Ⅰ (P<0.01). 2) There was no significant difference in the apparent digestibility of dry matter (DM), crude protein (CP), neutral detergent fiber (NDF) and acid detergent fiber (ADF) of blackheads among groups (P>0.05), but groupsⅡ and Ⅲ, in terms of numerical values, had different degrees of improvement than group Ⅰ. 3) Acetate and total volatile fatty acid concentrations in rumen fluid of groups Ⅱ and Ⅲ were significantly higher than those of group Ⅰ (P<0.05). 4) Serum albumin content (P<0.01) and albumin/globulin (P<0.05) of groups Ⅱ and Ⅲ were significantly higher than those of group Ⅰ (P<0.05); serum UN and high density lipoprotein cholesterol (HDL-C) contents and creatine kinase (CK) activity of group Ⅲ were significantly lower than those of group Ⅱ (P<0.05); there were no significant differences in the other serum biochemical indexes among groups (P>0.05). These results indicate that under the similar energy and protein level conditions, TMR only using peanut vine as the roughage source may decrease ADG, increase F/G, and decrease acetate and total volatile fatty acid concentrations in rumen fluid of Hubei blackhead goats; TMR using the combination of peanut vine and alfalfa as the roughage source can obtain similar feeding effect as alfalfa.

Key words： Hubei black-head goats; total mixed ration; growth performance; rumen fermentation; serum biochemical indexes

Cite this article

SUO Xiaojun, ZHANG Nian, YANG Qianping, TAO Hu, XIONG Qi, LI Xiaofeng, CHEN Mingxin . Effects of Peanut Vine Instead of Alfalfa in Granulated Total Mixed Ration on Growth Performance, Rumen Fermentation and Serum Biochemical Indexes of Hubei Black-Head Goats[J]. Chinese Journal of Animal Nutrition, 2019 , 31(2) : 865 -873 . DOI: 10.3969/j.issn.1006-267x.2019.02.043

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