动物营养学报 >

2017 , Vol. 29 >Issue 8: 2777 - 2784

DOI: https://doi.org/10.3969/j.issn.1006-267x.2017.08.021

饲料营养 Feed science and technology

半胱胺盐酸盐对泌乳中期热应激奶牛生产性能的影响

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  • 1. 新疆农业大学动物科学学院, 乌鲁木齐 830052;
    2. 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;
    3. 北京奶牛中心, 北京 100192;
    4. 农业部奶及奶制品质量监督检验测试中心(北京), 北京 100193;
    5. 天津梦得集团今日健康乳业有限公司, 天津 300400
吕中旺(1980—),男,安徽金寨人,博士研究生,从事奶牛营养代谢与牛奶品质调控研究。E-mail:lvzhongwang@sina.com

收稿日期: 2017-02-01

  网络出版日期: 2017-08-02

基金资助

"十二五"科技支撑（2012BAD12B02-5）；中国农业科学院科技创新工程（ASTIP-IAS07）

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Effects of Cysteamine Hydrochloride on Performance of Heat-Stressed Mid-Lactating Dairy Cows

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  • 1. College of Animal Science, Xinjiang Agricultural University, Urumqi 830052, China;
    2. State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing 100193, China;
    3. Beijing Dairy Cattle Center, Beijing 100192, China;
    4. Ministry of Agriculture-Milk and Dairy Product Inspection Center (Beijing), Beijing 100193, China;
    5. Jinrijiankang Dairy Co., Ltd., Tianjin Mengde Group, Tianjin 300400, China

Received date: 2017-02-01

  Online published: 2017-08-02

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摘要

本试验旨在研究散栏式饲养方式下，饲喂半胱胺盐酸盐对泌乳中期热应激奶牛生产性能的影响。选择48头健康荷斯坦奶牛[体重（562.25±37.85） kg，泌乳天数（123.64±10.67） d，胎次（1.23±0.42）胎，日产奶量（26.58±1.58） kg]，根据体重、泌乳天数、产奶量相同或相近的原则，随机分成4组（每组12头），对照组饲喂基础饲粮，试验组分别在基础饲粮中添加半胱胺盐酸盐3、15、30 g/kg。预试期12 d，正试期30 d。结果显示：随半胱胺盐酸盐添加剂量的增加，奶牛呼吸频率和直肠温度呈显著的线性降低（P<0.05）；干物质采食量、乳脂较正乳产量、能量校正乳产量、乳脂率、乳蛋白率均呈先升高后降低的显著的二次曲线变化（P<0.05），并且以添加3 g/kg组的效果较好；正试期末，3、15 g/kg组血清甲状腺素浓度显著低于对照组（P<0.05），15 g/kg组血清皮质醇浓度显著高于对照组（P<0.05）。结果提示，半胱胺盐酸盐能有效缓解散栏饲养的泌乳中期奶牛热应激，提高产奶量和乳品质，本试验条件下，饲粮中添加3 g/kg半胱胺盐酸盐较为适宜。

关键词： 半胱胺盐酸盐; 热应激; 产奶量; 乳成分; 血清激素

本文引用格式

吕中旺, 刘辉, 刘威, 卜登攀, 孙鹏, 王加启, 余雄, 杨开伦, 王志明, 于青 . 半胱胺盐酸盐对泌乳中期热应激奶牛生产性能的影响[J]. 动物营养学报, 2017 , 29(8) : 2777 -2784 . DOI: 10.3969/j.issn.1006-267x.2017.08.021

Abstract

This study aimed at researching the effects of cysteamine hydrochloride (CSH) on performance of mid-lactating cows suffered from heat stress in free stall barn. Forty-eight healthy mid-lactation Holstein dairy cows with body weight of (562.25±37.85) kg, milk yield of (26.58±1.58) kg, (1.23±0.42) parities and (123.64±10.67) d in milk were randomly divided into 4 groups (12 cows per group). Cows in 4 groups were fed diets containing 0 (control), 3, 15 and 30 g/kg CSH in diet, respectively. The pre-trial lasted for 12 d, and the trial lasted for 30 d. The results showed as follows: with the increase of CSH supplemental level, respiratory rate and rectal temperature was linearly significantly reduced (P<0.05); dry matter intake, 4% fat-corrected milk yield, energy-corrected milk yield, milk fat percentage and milk protein percentage were quadratically significantly change of firstly increased and then decreased (P<0.05), and 3 g/kg group showed better effects; at the end of trial period, compared with control group, serum thyroxin concentration in 3 and 15 g/kg groups was significantly decreased (P<0.05), and serum cortisol concentration in 15 g/kg group was significantly increased (P<0.05). The results indicate that CSH can effectively relief heat stress of mid-lactating cows in free stall barn, and increase milk yield and milk quality. The optimum CSH supplemental level in diet is 3 g/kg under the conditions in the present study.

Key words： cysteamine hydrochloride; heat-stress; milk yield; milk composition; serum hormone

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