乳房及肢蹄洁净度对荷斯坦奶牛体细胞数的影响

doi:10.16431/j.cnki.1671-7236.2019.08.024

Abstract

Abstract:

Mastitis is one of the most important diseases affecting the economic benefits of dairy production, and the number of somatic cells count (SCC) is an important indicator reflecting the health of the cow's breasts and the quality of milk.The cleanliness of the upper and lateral legs, breasts, and lower hind legs of 670 Holstein dairy cows from a large-scale pasture were evaluated, and the effects of breast and leg cleanliness on the number of somatic cells in milk were analyzed in this study.SAS 8.1 statistical software was used for least squares analysis of variance and multiple comparisons, and the cleanliness score, group effects, lactation effects and parity effects were uesd as fixed effects.The results showed that:①Group and parity had significant effects on somatic cell scores (P<0.05).②Lactation stage, lower leg cleanliness score and breast cleanliness score had extremely significantly effects on somatic cell scores (P<0.01):The somatic cell scores of the lower leg cleanliness scores of 4 were extremely significant higher than 1 and 2 points (P<0.01), and the somatic scores of the lower leg cleanliness score of 3 were significant higher than 1 point and 2 points (P<0.05);The somatic score of the breast cleanliness score of 3 was significant higher than 1 and 2 points (P<0.01);The upper leg and side cleanliness scores had no effect on somatic cell scores (P>0.05).③SCC had an increasing trend with the increase of the cleanliness score of the lower leg and udder of the cow.In conclusion, the health status of the herd breasts could be effectively understood by scoring the body cleanliness of the herd, which could provide a scientific basis for the daily management of large-scale dairy cows.

Key words: Holstein dairy cows; cleanliness score; somatic cell count (SCC)

CLC Number:

S823.9⁺1

YOU Zhenchen, WANG Xihu, GE Jianjun, ZHAO Fanfan, XU Lei, WANG Dan, ZHANG Menghua, ZHANG Xiaoxue, JIANG Hui, HUANG Xixia. Effect of Udder and Leg Cleanliness on Somatic Cell Count in Holstein Dairy Cows[J]. , 2019, 46(8): 2390-2396.

References 24

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Effect of Udder and Leg Cleanliness on Somatic Cell Count in Holstein Dairy Cows

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