CAJ | 학술논문

[目的]为了研究拜益生对奶牛隐性乳房炎的预防作用及对奶牛产奶量和乳品质的影响。[方法]选择100头荷斯坦奶牛,随机分成10组,每组10头,其中5组为实验组,5组为对照组。从产前7d开始至产后60d,实验组每天每头牛添加拜益生40g,其余饲养管理与对照组完全一致。每15d测定一次产奶量,每个月测定一次DHI。[结果]表明：实验组日均产奶量与对照组比较,提高1.84～2.28kg/头.d-1,差异显著（P〈0.05）;产后第30d,实验组牛奶的乳脂率和乳蛋白率比对照组分别提高0.4%、0.37%,差异极显著（P〈0.01）;与对照组比,总固体率提高0.83%,体细胞数降低15.64万/mL,差异均显著（P〈0.05）;产后第60d,实验组牛奶的乳脂率提高0.27%,体细胞数降低16.79万/mL,差异显著（P〈0.05）,乳蛋白率和总固体较对照组均有不同程度的提高,但不显著。[结论]拜益生对提高奶牛的产奶量、改善牛奶品质和预防奶牛隐性乳房炎有积极的作用。
[목적]위료연구배익생대내우은성유방염적예방작용급대내우산내량화유품질적영향。[방법]선택100두하사탄내우,수궤분성10조,매조10두,기중5조위실험조,5조위대조조。종산전7d개시지산후60d,실험조매천매두우첨가배익생40g,기여사양관리여대조조완전일치。매15d측정일차산내량,매개월측정일차DHI。[결과]표명：실험조일균산내량여대조조비교,제고1.84～2.28kg/두.d-1,차이현저（P〈0.05）;산후제30d,실험조우내적유지솔화유단백솔비대조조분별제고0.4%、0.37%,차이겁현저（P〈0.01）;여대조조비,총고체솔제고0.83%,체세포수강저15.64만/mL,차이균현저（P〈0.05）;산후제60d,실험조우내적유지솔제고0.27%,체세포수강저16.79만/mL,차이현저（P〈0.05）,유단백솔화총고체교대조조균유불동정도적제고,단불현저。[결론]배익생대제고내우적산내량、개선우내품질화예방내우은성유방염유적겁적작용。
[Objective] This experiment was conducted to determine the effects of Baybacin on subclini- cal mastitis prevention, milk yield and milk quality. [Method] 100 Holstein cows were divided into 10 groups randomly, 5 groups for experimental and the other 5 groups for blank. From 7day before calving to 60 day after calving, the experimental groups were fed with 40g/head/day Baybacin under the same basic diet and management conditions, Milk yield was tested every 15 day, DHI was tested every month, iRe- suit]The result showed that during the experiment, the average milk yield of experimental groups was a- bout 1.84~2.28 kg/head ~ day higher than that of blank group (P〈0.05) . On the 30th day of lactation, the experimental milk fat percentage and milk protein percentage increased 0.4% and 0.37%, respectively (P〈0.01). Compared with the control, the total solid rate increased 0.83% , SCC decreased 156,400 cells/mL (P〈0.05). On the 60th day of lactation, the experimental milk fat percentage increased 0.27%, and SCC decreased 167,900 cells/mL(P〈0.05). Milk protein and total solid percentage inordinately in- creased than that of blank group, but the difference was not significant. [Conclusion]Baybacin had positive role in increasing milk yield, improving milk quality and preventing subclinical mastitis of dairy cattle .