摘要： 选用24头荷斯坦奶牛,随机分为4组,全混和日粮饲喂,自由采食,分别饲喂含0,100,150,200mg/kg的二氢呲啶日粮20d,研究二氢吡啶对泌乳奶牛产奶量及体温、呼吸频率的影响。结果表明:含二氢吡啶日粮可以使奶牛产奶量提高17.5%～28.3%,延缓奶牛产奶后期产奶量下降,但差异不显著(P >0.05)。与对照组相比,含二氢吡啶日粮对奶牛的体温、呼吸影响不显著(P >0.05),但添加二氢吡啶日粮有降低奶牛呼吸频率的趋势。

关键词: 二氢吡啶, 奶牛, 产奶量, 体温, 呼吸频率

Abstract: In order to study effects of 1,4-dihydropyridine on milk yield,temperature and respiration of lactating dairy cows,twenty-fouth lactating dairy cows were divided randmonly into four gtroups to be fed with total mixed ration and with 0,100,150,200 mg /kg 1,4-dihydropyridine for twenty days,respectively. Feed and water were provided ad libitum. Results indicated that 100,150,200 mg /kg increased milk yield of dairy cows(17. 5%－28. 3% kg / d), but there were no difference among 0,100,150,200 mg /kg diets(P > 0. 05). Body temperature and respiration were no difference(P > 0. 05) when dairy cows were fed 100,150,200 mg /kg compared with 0 mg /kg 1,4-dihydropyridine diet. The respiration was declined when dairy cows fed 100,150,200 mg /kg 1,4-dihydropyridine diets.

Key words: 1,4-dihydropyridine, Dairy cow, Milk yield, Body temperature, Respiration

中图分类号: 

• TX252