复合酵母培养物对奶牛产奶性能、氮排放及血液生化指标的影响

doi:10.11686/cyxb2015124

草业学报 ›› 2015, Vol. 24 ›› Issue (12): 121-130.DOI: 10.11686/cyxb2015124

复合酵母培养物对奶牛产奶性能、氮排放及血液生化指标的影响

王玲¹，吕永艳¹，程志伟²，杜高唐³，李金林⁴，付石军⁴，孙国强^1，*

1.青岛农业大学动物科技学院，山东青岛 266109；
2.山东滨州市滨城区畜牧兽医局,山东滨州256620；
3.山东滨州市畜牧兽医局,山东滨州256618；
4.山东滨州畜牧兽医研究院,山东滨州256618

收稿日期:2015-03-10 出版日期:2015-12-20 发布日期:2015-12-20
通讯作者: qdnydxsgq@126.com
作者简介:王玲(1990-),女,山东淄博人,在读硕士。E-mail:xiaguang_66@163.com
基金资助:
山东省现代农业产业技术体系牛产业创新团队(SDAIT-12-011-08)资助

Milk production, nitrogen excretion and blood biochemical parameter responses to dietary addition of compound yeast cultures in dairy cows

WANG Ling¹, LV Yong-Yan¹, CHENG Zhi-Wei², DU Gao-Tang³, LI Jin-Lin⁴, FU Shi-Jun⁴, SUN Guo-Qiang^{1, *}

1.College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China;
2.Animal Husbandry and Veterinary Bureau of Binzhou City in Shandong Binzhou, Binzhou 256620, China;
3.Animal Husbandry and Veterinary Bureau of Shandong Binzhou, Binzhou 256618, China;
4.Institute of Animal Husbandry and Veterinary Medicine of Shandong Binzhou, Binzhou 256618, China

Received:2015-03-10 Online:2015-12-20 Published:2015-12-20

摘要/Abstract

摘要： 为研究饲料中添加复合酵母培养物对奶牛产奶性能、氮排放及血液生化指标的影响,选取年龄、体重、产奶量及泌乳期相近(135±15) d的荷斯坦奶牛24头,随机分为4组,每个处理6个重复,对照组和3个试验组的复合酵母培养物添加量分别为精料浓度的0,0.8%,1.0%,1.2%,随精料饲喂,测定产奶量、乳成分、氮排放及血液生化指标,结果表明,1)试验2组日均产奶量显著高于对照组(P<0.05),各试验组分别比对照组提高8.48%,10.05%,8.97%。2)复合酵母培养物能显著提高乳脂和乳蛋白率(P<0.05),显著降低牛奶体细胞数(P<0.05),以试验2组最低。3)在氮排放量上,试验2组显著低于对照组(P<0.05),各试验组比对照组分别降低8.47%,12.01%,9.36%。4)在血液生化指标方面,复合酵母培养物能提高血清中总蛋白、球蛋白、血糖、胰岛素水平(P<0.05),降低尿素氮水平(P<0.05)。由此可见,本试验条件下,综合考虑产奶量、乳成分、氮排放及血液生化指标,复合酵母培养物的最佳添加量为精料浓度的1.0%。

Abstract: This experiment was conducted to determine the effects of compound yeast cultures on the milk production, nitrogen excretion and blood biochemical parameters of dairy cows. A total of 24 Holstein lactating cows with similar parity, weight, milk yield and lactation stage (135±15 day in milk) were equally assigned to four groups, including one control group and 3 treatment groups, with dietary supplementation of compound yeast cultures at concentrations of 0, 0.8%, 1.0% and 1.2%, respectively. Milk yield, milk composition, nitrogen excretion and blood biochemical parameters of each cow were recorded. The results showed: 1) The cows in the respective treatment groups had 8.48%, 10.05%, 8.97% higher daily milk yield than cows in the control group (P<0.05). 2) Compound yeast cultures significantly increased milk fat and protein concentration (P<0.05), and reduced somatic cell counts (P<0.05), with treatment group 2 again the greatest response. 3) The supply of compound yeast cultures in dairy cow feed concentrate reduced nitrogen excretion by 8.47%, 12.01%, 9.36% compared to the control group (P<0.05). 4) Dietary supplementation with compound yeast cultures significantly increased the levels of glucose (GLU), total protein (TP), globulin (GLOB), and insulin (INS) (P<0.05) in the serum, and reduced blood urea nitrogen (BUN) (P<0.05). Based on the data for milk yield, milk composition, nitrogen excretion and blood biochemical parameters, the optimal concentration of compound yeast cultures administered as a supplement for dairy cow diets is 1.0%.

王玲，吕永艳，程志伟，杜高唐，李金林，付石军，孙国强. 复合酵母培养物对奶牛产奶性能、氮排放及血液生化指标的影响[J]. 草业学报, 2015, 24(12): 121-130.

WANG Ling, LV Yong-Yan, CHENG Zhi-Wei, DU Gao-Tang, LI Jin-Lin, FU Shi-Jun, SUN Guo-Qiang. Milk production, nitrogen excretion and blood biochemical parameter responses to dietary addition of compound yeast cultures in dairy cows[J]. Acta Prataculturae Sinica, 2015, 24(12): 121-130.

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复合酵母培养物对奶牛产奶性能、氮排放及血液生化指标的影响

Milk production, nitrogen excretion and blood biochemical parameter responses to dietary addition of compound yeast cultures in dairy cows

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