Effects of Betaine on Growth Performance, Activities of Duodenum Digestive Enzymes and Cecal Microflora of Heat-Stressed Broilers

HE Shaojun; ZHAO Shujing; LI Jing; CHE Chuanyan; DAI Sifa; LIU Deyi

doi:10.3969/j.issn.1006-267x.2014.12.024

2014 , Vol. 26 >Issue 12: 3731 - 3739

DOI: https://doi.org/10.3969/j.issn.1006-267x.2014.12.024

Feed Science and Technology

Effects of Betaine on Growth Performance, Activities of Duodenum Digestive Enzymes and Cecal Microflora of Heat-Stressed Broilers

HE Shaojun ,
ZHAO Shujing ,
LI Jing ,
CHE Chuanyan ,
DAI Sifa ,
LIU Deyi

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College of Animal Science and Techonology, Anhui Science and Technology University, Fengyang 233100, China

Received date: 2014-06-07

Online published: 2014-12-05

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Abstract

The study was performed to explore the effects of betaine on growth performance, activities of duodenum digestive enzymes and cecal mircoflora of heat-stressed broilers. A total of 270 14-day-old Arbor Acres (AA) broilers were randomly divided into 6 groups with 3 replicates per group and 15 chicks per replicate. The experimental groups including normal temperature group, heat-stressed group, normal temperature+0.1% betaine group, heat-stressed+0.1% betaine group, heat-stressed+0.2% betaine group, and heat-stressed+0.4% betaine group. Heat stressed broilers were reared in high ambient temperature at (32±1) ℃. The pre-test lasted for 7 d, and formal test lasted for 21 d. The results showed as follows: 1) body weight of heat-stressed broilers aged from 28 to 42 days was significantly increased (P<0.01), and the ratio of feed to gain of heat-stressed broilers aged from 22 to 35 days was significantly decreased by diet supplemented betaine (P<0.01). 2) The activities of trypsinase, amylase and pancrelipase in duodenum of heat-stressed broilers aged 28, 35 and 42 days were significantly increased by betaine with different concentrations (P<0.05 or P<0.01), except trypsinase activity of heat-stressed broilers of 28 days old fed diet supplemented with 0.1% or 0.2% betaine and amylase activity of heat-stressed broilers of 35 days old fed diet supplemented with 0.1% betaine were no significantly difference (P>0.05). 3) Diet supplemented with betaine could significantly increase the numbers of Lactobacillus in cecum (P<0.01), and significantly reduce the numbers of Clostridium perfringens in cecum of heat-stressed broilers (P<0.01). In conclusion, the basal diet supplemented with betaine may improve the growth performance, increase the activities of duodenum digestive enzymes and maintain the stabilization of cecal microflora of heat-stressed AA broilers, then release heat stress hazard to broilers.

Key words： heat stress; broiler; digestive enzyme; microflora

Cite this article

HE Shaojun , ZHAO Shujing , LI Jing , CHE Chuanyan , DAI Sifa , LIU Deyi . Effects of Betaine on Growth Performance, Activities of Duodenum Digestive Enzymes and Cecal Microflora of Heat-Stressed Broilers[J]. Chinese Journal of Animal Nutrition, 2014 , 26(12) : 3731 -3739 . DOI: 10.3969/j.issn.1006-267x.2014.12.024

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