禽营养 Poultry Nutrition

偏热刺激对肉鸡休息行为、生理及生产性能的影响

  • 胡春红 ,
  • 张敏红 ,
  • 冯京海 ,
  • 苏红光 ,
  • 张少帅
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  • 中国农业科学院北京畜牧兽医研究所, 动物营养学国家重点实验室, 北京 100193

收稿日期: 2015-02-05

  网络出版日期: 2015-07-07

基金资助

国家科技支撑计划课题"畜禽健康养殖环境控制关键技术与集成"(2012BAD39B02);中国农业科学院科技创新团队项目(ASTIP-IAS07)

Effects of Thermal Stimulation on Resting Behavior, Physiology and Performance of Broilers

  • HU Chunhong ,
  • ZHANG Minhong ,
  • FENG Jinghai ,
  • SU Hongguang ,
  • ZHANG Shaoshuai
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  • State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China

Received date: 2015-02-05

  Online published: 2015-07-07

摘要

本文旨在研究持续偏热刺激对爱拔益加(AA)肉鸡休息行为、生理和生产性能的影响。将健康、体重接近的192只22日龄AA肉鸡(公母各占1/2)平均分成4个处理,分别置于4个相同环境控制室,每个处理6个重复,每个重复8只鸡。适应7 d。29日龄08:00将各室温度分别逐渐(30 min内)调到18、22(热中性温度)、26和30 ℃(±0.5 ℃)并保持不变,试验期14 d。结果表明:温度处理2 h,与22 ℃处理相比,26和30 ℃处理坐着休息时间百分比显著下降(P<0.05),俯伏休息时间百分比显著升高(P<0.05)。第3、10天,18和26 ℃处理下丘脑热休克蛋白70(HSP70)浓度显著高于22 ℃处理(P<0.05)。第1、3和10天,26 ℃处理体核温度、血浆皮质酮和三碘甲腺原氨酸(T3)浓度与22 ℃处理差异不显著(P>0.05),30 ℃处理体核温度显著高于其他处理(P<0.05)。1~7 d和8~14 d,26和30 ℃处理平均日采食量(ADFI)显著低于22 ℃处理(P<0.05)。1~14 d,26和30 ℃处理的ADFI、平均日增重(ADG)显著低于22 ℃处理(P<0.05)。由此可得,26 ℃偏热刺激在一定程度上降低了29~42日龄AA肉鸡坐着休息时间百分比和生产性能,提高了俯伏休息时间百分比和下丘脑HSP70浓度。

本文引用格式

胡春红 , 张敏红 , 冯京海 , 苏红光 , 张少帅 . 偏热刺激对肉鸡休息行为、生理及生产性能的影响[J]. 动物营养学报, 2015 , 27(7) : 2070 -2076 . DOI: 10.3969/j.issn.1006-267x.2015.07.012

Abstract

This trial was conducted to investigate the effects of prolonged thermal stimulation on resting behavior, physiology and performance of Arbor Acres (AA) broilers. One hundred and ninety-six 22-day-old healthy AA broilers (half males and half females) with similar body weight were selected and randomly divided into four groups and each group containing six replicates was kept in individual identical environmental control cabins, each replicate contained four males and four females. The pre-test period lasted for 7 days. At 08:00, 29-day-old broilers were exposed to constant thermal stimulation programs with 18, 22 (representing a thermo-neutral condition), 26 and 30 ℃ (±0.5 ℃) for 14 days. The results showed as follows: after temperature treatments for 2 h, compared with 22 ℃ treatment, the percentage of time spent on sitting rest significantly reduced and the percentage of time spent of prostrating rest was significantly increased of 26 and 30 ℃ treatment (P<0.05). On days 3 and 10, hypothalamus heat shock protein (HSP70) concentration of 18 and 26 ℃ treatments was significantly higher than that of 22 ℃ treatment (P<0.05). On days 1, 3 and 10, body core temperature, plasma corticosterone (CORT) and triiodothyronine (T3) concentrations of 26 ℃ treatment were not significantly different with 22 ℃ treatment (P>0.05), body core temperature of 30 ℃ treatment was significantly higher than that of the others (P<0.05). From day 1 to day 7 and day 8 to day 14, average daily feed intake (ADFI) of 26 and 30 ℃ treatments was significantly lower than that of 22 ℃ treatment (P<0.05). From day 1 to day 14, ADFI and average daily gain (ADG) of 26 and 30 ℃ treatments were significantly lower than those of 22 ℃ treatment (P<0.05). Consequently, when housing temperature reached 26 ℃ thermal stimulation, percentage of sitting rest time and performance are decrease to some extent, percentage of prostrating rest time and hypothalamus HSP70 concentration of broilers aged 29 to 42 days are increased.

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