摘要
选用32头健康无病,体重、年龄、胎次、泌乳量、乳脂率、乳蛋白和乳固形物等相近的中国黑白花奶牛,对照组饲喂基础日粮,试验组在饲喂基础日粮的基础上分别添加50、100和150 g/(头.d)中草药抗热应激剂,进行中草药抗热应激剂缓解高温天气对奶牛的影响试验,试验期为40 d。结果表明,B、C和D组每头奶牛平均日产奶量比A组分别增加1.89、2.62和2.83 kg,提高幅度分别为11.91%、16.51%和17.83%,差异均极显著(P(0.01)。在乳脂率方面,B、C和D组比A组分别提高0.10、0.23和0.15个百分点,提高幅度分别为3.47%、7.99%和5.21%,其中C组差异显著(P(0.05);在乳蛋白方面,B、C和D组比A组分别提高0.06、0.10和0.08个百分点,差异不显著(P(0.05);B、C和D组乳固形物比A组分别提高0.39、0.42和0.38个百分点。B、C和D组比A组每头每日分别多收入2.64、3.08和2.53元。
32 healthy Chinese black and white milk cows with similar weight, age, fetus, lactation amount, milk fat percentage, milk protein and solids were selected. The control group was fed on basal diets and the experiment groups were fed on basal diets with 50, 100 and 150 g/d Chinese herbal medicine additive for thermo-resistant stress per cow respectively during an experiment period of 40 d, so as to study the effect of Chinese herbal medicine additive for thermo-resistant stress to remit the effluence of high temperature weather on milk cows. The results indicated that in comparison with the control group, the average daily milk yield of each cow in the experiment Group B, C and D were increased by 1.89, 2.62 and 2.83 kg with the increasing extents of 11.91%, 16.51% and 17.83% respectively, and the difference was extremely significant （ P 〈0.01 ）. The milk fat percentage in Group B, C and D was in- creased by 0.10, 0.23 and 0.15 percentage point with the increasing extents of 3.47% , 7.99% and 5.21% respectively, of which the difference of Group C was significant （ P 〈 0.05 ） ; milk protein in Group B, C and D was increased by 0.06, 0.10 and 0.08 percentage point respectively, and the difference was not significant （P 〈0.05） ; the milk solids in Group B, C and D were increased by 0.39, 0.42 and 0.38 percentage point respectively, and the average daily income per cow was 2.64, 3.08 and 2.53 Yuan more than that of the control group.
出处
《粮食与饲料工业》
CAS
北大核心
2007年第4期35-36,共2页
Cereal & Feed Industry
关键词
中草药
抗热应激剂
奶牛
生产性能
Chinese herbal medicine
thermo-resistant stress additive
cow
production performance
