Effects of Dietary Energy Level on Growth Performance, Nutrient Digestibility and Serum Biochemical Indices of Dezhou Donkeys

ZHANG Chen; YANG Quan; WANG Yunpeng; LI Wenxiu; ZHANG Guiguo; ZHANG Chongyu

doi:10.3969/j.issn.1006-267x.2022.02.047

2022 , Vol. 34 >Issue 2: 1158 - 1164

DOI: https://doi.org/10.3969/j.issn.1006-267x.2022.02.047

RESEARCH PAPER

Effects of Dietary Energy Level on Growth Performance, Nutrient Digestibility and Serum Biochemical Indices of Dezhou Donkeys

ZHANG Chen ,
YANG Quan ,
WANG Yunpeng ,
LI Wenxiu ,
ZHANG Guiguo ,
ZHANG Chongyu

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Key Laboratory of Animal Biotechnology and Disease Control & Prevention of Shandong Province, College of Animal Science and Technology, Shandong Agricultural University, Tai'an 271018, China

Received date: 2021-07-12

Online published: 2022-02-15

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Abstract

The object of this study was to investigate the effects of dietary energy level on growth performance, nutrient digestibility and serum biochemical indices of Dezhou donkeys. Thirty-six healthy Dezhou male donkeys aged from 7 to 8 months with similar body weight of (123.9±5.0) kg were selected and randomly divided into 3 groups with 3 replicates in each group and 4 donkeys in each replicate. Dietary digestible energy levels of 3 groups were 10.43 (low energy group), 11.03 (mid energy group) and 11.90 MJ/kg (high energy group), respectively, and the crude protein levels were similar. The adaptation period was 20 days and the experimental period was 40 days. The results showed as follows:1) the average daily gain of mid energy group and high energy group was significantly higher than that of low energy group (P<0.05), and the average daily gain of high energy group was significantly higher than that of mid energy group (P<0.05). The feed to gain ratio of mid energy group and high energy group was significantly lower than that of low energy group (P<0.05), and the feed to gain ratio of high energy group was significantly lower than that of mid energy group (P<0.05). 2) The dry matter, organic matter and carbohydrate digestibility of mid energy group and high energy group was significantly higher than that of low energy group (P<0.05), and the dry matter, organic matter and carbohydrate digestibility of high energy group was significantly higher than that of mid energy group (P<0.05). 3) The serum total protein and triglyceride contents of high energy group were significantly higher than those of mid energy group and low energy group (P<0.05). The serum albumin content of mid energy group and high energy group was significantly higher than that of low energy group (P<0.05), and the serum albumin content of high energy group was significantly higher than that of mid energy group (P<0.05). The serum lactate dehydrogenase activity of mid energy group and high energy group was significantly lower than that of low energy group (P<0.05), and the serum lactate dehydrogenase activity of high energy group was significantly lower than that of mid energy group (P<0.05). In conclusion, in the range of dietary energy level in this experiment (10.43 to 11.90 MJ/kg), feeding high energy level diet can better improve the average daily gain of Dezhou donkeys, improve the dry matter, organic matter and carbohydrate digestibility, and decrease the feed to gain ratio.

Key words： Dezhou donkeys; growth performance; nutrient digestibility; serum biochemical indices

Cite this article

ZHANG Chen , YANG Quan , WANG Yunpeng , LI Wenxiu , ZHANG Guiguo , ZHANG Chongyu . Effects of Dietary Energy Level on Growth Performance, Nutrient Digestibility and Serum Biochemical Indices of Dezhou Donkeys[J]. Chinese Journal of Animal Nutrition, 2022 , 34(2) : 1158 -1164 . DOI: 10.3969/j.issn.1006-267x.2022.02.047

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