Correlation Analysis of Milk Yield with Rumination Time, Activity and Somatic Cell Score of Dairy Cows during Perinatal Period

XIONG Anran; WANG Hui; WU Fuxin; XIONG Benhai; JIANG Linshu

doi:10.3969/j.issn.1006-267x.2020.11.034

2020 , Vol. 32 >Issue 11: 5293 - 5301

DOI: https://doi.org/10.3969/j.issn.1006-267x.2020.11.034

Correlation Analysis of Milk Yield with Rumination Time, Activity and Somatic Cell Score of Dairy Cows during Perinatal Period

XIONG Anran ,
WANG Hui ,
WU Fuxin ,
XIONG Benhai ,
JIANG Linshu

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1. Key Laboratory for Dairy Cow Nutrition, College of Animal Science and Technology, Beijing University of Agriculture, Beijing 102206, China;
2. Beijing Institute of Animal Science and Veterinary Medicine, Chinese Academy of Agricultural Sciences, Beijing 100193, China

Received date: 2020-04-13

Online published: 2020-11-16

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Abstract

This experiment was conducted to analyze the correlation analysis of milk yield with rumination time, activity and somatic cell score (SCS) of dairy cows during perinatal period, and to explore the health status of dairy cows. This study counted 43 612 electronic records of 481 healthy Holstein cows with similar parity, similar age, 570 to 650 kg body weight, lactation days of 1 to 21 days and milk yield of 15 to 40 kg/d in a dairy farm in Beijing, including milk yield, rumination time, activity and somatic cell counts (SCC) in milk of dairy cows in 21 days of perinatal period. SCC data were converted into SCS. The Pearson correlation analysis in SPSS 21.0 software was used to establish regression curve models of milk yield with rumination time, activity and SCS of dairy cows during perinatal period. The results showed that the milk yield of dairy cows during perinatal period had significant quadratic curve and cubic curve negative correlation with activity (R²=0.945, P<0.001) and SCS (R²=0.921, P<0.001), and had cubic curve positive correlation with rumination time (R²=0.717, P<0.001). The verification of regression curve model shows that the curve regression relationship can be established by using the correlation between milk yield with rumination time, activity and SCS of dairy cows during perinatal period. To sum up, regulating the feeding behavior of dairy cows in perinatal period can monitor the health status of dairy cows, promote lactation of dairy cows, predict the mastitis status of dairy cows in advance, and improve milk quality.

Key words： dairy cows; perinatal period; milk yield; rumination time; activity; somatic cell score; correlation

Cite this article

XIONG Anran , WANG Hui , WU Fuxin , XIONG Benhai , JIANG Linshu . Correlation Analysis of Milk Yield with Rumination Time, Activity and Somatic Cell Score of Dairy Cows during Perinatal Period[J]. Chinese Journal of Animal Nutrition, 2020 , 32(11) : 5293 -5301 . DOI: 10.3969/j.issn.1006-267x.2020.11.034

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