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增加光照时间对锦江牛生产性能和行为的影响 被引量:5

Effect of supplementary light on the growth and behavior of Jinjiang cattle
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摘要 为了探讨增加光照时间对锦江牛生产性能和行为的影响,选用锦江公牛16头、锦江母牛10头随机分为2组,即:自然光照组(10.2~13.8 h)和16 h光照组,每组公牛8头、母牛5头。试验期117 d,期间记录牛的始重、末重、采食行为、休息行为和活动量。结果:与自然光照组相比,16 h光照组末重和平均日增重显著增加(P<0.01),且干物质采食量增加16.18%,料重比降低9.88%;16 h光照组采食时间、每次采食时间显著降低(P<0.01),反刍时间和趴卧休息时间显著增加(P<0.01),且反刍次数显著增加(P<0.05);16 h光照组趴卧休息率增加(P<0.05),公牛活动量降低39.21%。由此可知,增加光照至16 h可以增加锦江牛采食量、反刍时间和趴卧休息时间,减少其活动量,从而提高了其生产性能。 To examine the effect of supplementary light on the growth and behavior of Jinjiang cattle, 16 Jinjiang bulls and 10 Jinjiang heifers were selected and randomly divided into the natural light group(10.2~13.8 h) and the 16 hours light group, with 8 bulls and 5 heifers in each group. The trial period lasted for 117 d. The initial weight and final weight, the feeding behavior, the lying behavior and the activity level of the cattle were recorded. The results showed that the ADG of the 16 hours light group increased significantly(P<0.01), their DMI increased by 16.18%, and their F/G decreased by 9.88%. The feeding time and time per feeding bout of the 16 hours light group significantly decreased(P<0.01), their ruminating time and lying time significantly increased(P<0.01), their frequencies of rumination significantly increased, too(P<0.05);the lying rate of both Jinjiang bulls and heifer increased(P<0.05), and the total activity level of the bulls in the 16 hours light group decreased by 39.21%. It could be concluded that supplemented light(increase to) 16 hours helped cattle to increase their feed intake, DMI, ruminating time and lying time, and reduce their activity level, all of which enhanced their growth performance.
作者 邱静芸 韩波 龚会单 杨食堂 颜培实 QIU Jingyun;HAN Bo;GONG Huichan;YANG Shitang;YAN Peishi(College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China;Jiangxi Gao'an Yufeng Agricultural and Livestock Co. Ltd, Yichun 330800, China)
出处 《畜牧与兽医》 北大核心 2019年第9期31-36,共6页 Animal Husbandry & Veterinary Medicine
基金 国家重点研发计划项目(2016YFD0500508)
关键词 光照时间 锦江牛 生产性能 行为 活动量 light time Jinjiang cattle growth performance behavior activity
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