Effect of Fruit-flavored Agent and Green Pigment on Production Performance of Simmental Cows

[Objective] The paper was to increase utilization rate of roughage to solve current shortage of forage and improve production performance of Simmental cow.[Method] Fruit-flavored agent and green pigment were added in roughage of Simmental cow respectively,and their effects on feed intake,milk production and milk quality of Simmental cow were studied.[Result] After adding fruit-flavored agent and green pigment,the feed intakes of Simmental cow were increased by 30.69% and 12.27%,while the milk productions were increased by 1.74 and 2.25 kg,respectively,and the differences were all significant（P 〈 0.05）.[Conclusion]Adding 0.3% and 0.1% fruit-flavored agent and green pigment in roughage of Simmental cow could significantly improve feed intake and milk production,which can also delay the decline of milk production during late lactation stage and improve milk quality.

不同饲养方式对西门塔尔牛泌乳性能和血液生化指标的影响

为探究不同饲养方式对西门塔尔牛的产奶量、乳品质和血液生化指标的影响。选取16头泌乳后期产奶量、日采食量、体重接近,胎次相同、精神良好、体质健康的西门塔尔牛,随机分成2组,分别为舍饲组和放牧+补饲组,每组8头。舍饲组每天饲喂2次,放牧+补饲组每天放牧8 h后补充1.0 kg/天·头混合精饲料,试验30天。结果显示,放牧+补饲组在试验第15天和第30天时比舍饲组产奶量分别提高了10.09%和11.62%(P<0.05),且放牧+补饲组有利于减缓泌乳后期奶牛产奶量下降趋势。放牧+补饲组牛乳中的乳脂率和乳糖含量比舍饲组分别提高了6.35%和10.65%,差异显著(P<0.05),乳蛋白率、总固形物、非脂乳固体差异不显著(P>0.05)。放牧+补饲组血清总蛋白、白蛋白和血糖含量比舍饲组分别提高了11.69%、14.21%、20.49%,差异显著(P<0.05),而尿素氮和碱性磷酸酶差异不显著(P>0.05)。结果表明,牧草丰盛时,采用放牧+补饲的饲养方式有利于改善西门塔尔牛的泌乳性能,改善乳品质,促进西门塔尔牛体内蛋白质和糖物质代谢水平。

药食兼用饲料添加剂对奶牛产奶量及奶品质的影响

为了解决牛奶中抗生素、农药残留超标问题,提高奶牛产奶量及奶品质,选用萝卜缨与胡萝卜、山药等多种药食兼用食物提取物组成的饲料添加剂添加至奶牛日粮中分组饲喂,称量产奶量,测定牛奶品质指标。结果显示,药食兼用饲料添加剂稳定冬季奶牛产奶量,且添加比例越高,效果越显著;降低生鲜乳体细胞数,一定程度提高生鲜乳中脂肪、真蛋白、乳糖含量,且添加1.5%药食兼用饲料添加剂效果更明显。因此,此药食兼用饲料添加剂可代替抗生素,提高奶牛免疫性能,改善奶品质。