不同速度音乐对奶牛产奶量及血液生化指标的影响

Effects of different music speed on milk products and blood biochemical indexes of dairy cows

为了研究常速、快速、慢速音乐对奶牛血液能量代谢指标的影响,试验分3期各选择年龄、胎次、产奶量相近的健康荷斯坦奶牛32头,随机分成2组,每组16头。对照组不播放音乐,试验组在各期试验中分别播放常速、快速、慢速梁祝钢琴曲,每两期试验间隔7 d。每20 d采集血样、奶样1次,并测定产奶量及血液生化指标。结果表明:在第20天时,常速音乐组和快速音乐组奶牛产奶量均显著高于对照组(P<0.05);在第20,40天和0~40 d,常速音乐组、快速音乐组、慢速音乐组奶牛血清中血糖(GLU)含量均高于对照组,但差异不显著(P>0.05);常速音乐组、快速音乐组游离脂肪酸(NEFA)、三酰甘油(TG)、胆固醇(TC)、β-羟丁酸(BHBA)含量均低于对照组,差异不显著(P>0.05)。说明音乐可提高奶牛产奶量,其中常速音乐效果明显,快速音乐次之;音乐可以提高奶牛血清中GLU含量,降低NEFA、TG、TC、BHBA含量。

To study the effects of music at regular,fast and slow speed on blood energy metabolism indexes of dairy cows,the test was divided into 3 periods in which 32 healthy Holstein cows with similar age,parity,milk yield were selected and divided into 2 groups randomly（16 pigs in each group）.The control group did not play music,and the trials played the regular,fast and slow Butterfly Lovers piano music.with 7 d intervals between each period..Blood samples and milk samples were collected for 1 time per 20 d,and the milk yield and blood biochemical index were measured at the same time.Results showed that milk products of experimental groups with regular and fast speed music were increased significantly（P〈0.05） compared with that of control group on the 20th day.Additionally,in the whole period,the serum GLU content of regular music group,fast music group and the slow music group were higher than that of the control group,but there were no significant differences（P〉0.05）.;NEFA,TG,TC,BHBA levels were lower than that of the control group without significant difference（P〉0.05）.These results indicated that music can improve milk yield.The effect with regular speed music was the highest followed by fast music.Also,music can increase the content of GLU in serum and conversely decrease the NEFA,TG,TC and BHBA contents.