Effects of Dietary Energy Level on Growth Performance and Serum Biochemical Indices of Fattening Male Dairy Goats

GONG Feng; WANG Jianmin; WANG Guizhi; XIE Zhijing; YANG Weiren

doi:10.3969/j.issn.1006-267x.2013.01.026

Chinese Journal of Animal Nutrition >

2013 , Vol. 25 >Issue 1: 208 - 213

DOI: https://doi.org/10.3969/j.issn.1006-267x.2013.01.026

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Effects of Dietary Energy Level on Growth Performance and Serum Biochemical Indices of Fattening Male Dairy Goats

GONG Feng ,
WANG Jianmin ,
WANG Guizhi ,
XIE Zhijing ,
YANG Weiren

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Department of Animal Science and Technology, Shandong Agricultural University, Tai'an 271018

Received date: 2012-07-01

Online published: 2013-01-04

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Abstract

This experiment was conducted to investigate the effects of dietary energy level on growth performance and serum biochemical indices of fattening male dairy goats. Twenty seven male Laoshan dairy goats with an average body weight of (25.01?3.23) kg were randomly assigned to 3 groups with 3 replicates per group of 3 goats per replicate. Diets were formulated according to the AFRC (1998), with three digestible energy levels of 9.29, 10.00 and 10.70 MJ/kg. The results showed as follows: 1) average daily gain (ADG) of goats in 9.29 MJ/kg group was significantly lower than that in 10.00 and 10.70 MJ/kg groups (P<0.05). Among three groups, goats in 10.00 MJ/kg group appeared to have the highest ADG increased by 138.19% compared with 9.29 MJ/kg group (P<0.05), and by 19.15% compared with 10.70 MJ/kg group (P>0.05). Feed to gain ratio of goats in 10.00 and 10.70 MJ/kg groups was significantly lower than that in 9.29 MJ/kg group (P<0.05), but there was no significant difference between 10.00 and 10.70 MJ/kg groups (P>0.05). 2) All goats had similar activities of glutamic-pyruvic transaminase and glutamic-oxalacetic transaminease and content of total protein in serum (P>0.05), however, serum urea nitrogen content in 9.29 MJ/kg group was significantly higher than that in 10.00 and 10.70 MJ/kg groups (P<0.05) and serum glucose, albumin, total cholesterol contents were significantly lower than those in 10.00 MJ/kg group (P<0.05). Overall, considering the costing of the feeding, digestible energy level at 10.00 MJ/kg is the best for male dairy goats' growth.

Key words： dairy goats; fattening; energy level; growth performance; serum biochemical indices

Cite this article

GONG Feng , WANG Jianmin , WANG Guizhi , XIE Zhijing , YANG Weiren . Effects of Dietary Energy Level on Growth Performance and Serum Biochemical Indices of Fattening Male Dairy Goats[J]. Chinese Journal of Animal Nutrition, 2013 , 25(1) : 208 -213 . DOI: 10.3969/j.issn.1006-267x.2013.01.026

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