Molecular Nutrition

Behavioral Differences of Different Milk Yield Dairy Cows and Its Correlation with Lactation Performance

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  • 1. Beijing Key Laboratory of Dairy Cattle Nutrition, Institute of Animal Science and Technology, Beijing University of Agriculture, Beijing 102206, China;
    2. Beijing Institute of Animal Husbandry and Veterinary Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China

Received date: 2019-01-09

  Online published: 2019-07-19

Abstract

This experiment was conducted to study the behavioral differences of different milk yield dairy cows, and to analysis the correlation of behavior and lactation performance of different milk yield dairy cows. Twenty-four mid-lactating[(114.6±7.5) d] China Holstein dairy cows with the average body weight of (670±24) kg and (2.6±0.4) parity were divided into high-yield group[milk yield was (31.90±1.76) kg/d] and low-yield group[milk yield was (19.30±1.76) kg/d], each group contained 12 cows. Through 24-hour video surveillance system, precision feeding system and pedometer, observated and statistics the feed (feed intake, feed time, intake times, ruminant time and ruminant times), drink (drink time and drink times), movement (lie time, lie times, walking/standing time and number of walking steps) within 48 hours, and to study the correlation of behavior and milk yield of dairy cows. The results showed as follows:1) the milk protein percentage of dairy cows in low-yield group was significantly higher than that of dairy cows in high-yield group (P<0.01), the milk fat yield, milk protein yield and milk lactose percentage of dairy cows in low-yield group was significantly lower than that of dairy cows in high-yield group (P<0.05 or P<0.01). 2) The dry matter intake, drink time and drink times of dairy cows in high-yield group were significantly higher than those of dairy cows in low-yield group (P<0.01), and the number of walking steps of dairy cows in high-yield group was significantly lower than that of dairy cows in low-yield group (P<0.01). 3) The total milk yield had positive correlation with dry matter intake (r=0.829,P<0.01), drink time (r=0.473,P<0.05) and drink times (r=0.429,P<0.05), and had negative correlation with number of walking steps (r=-0.574,P<0.01). In conclusion, there is correlation between behavior and milk yield of dairy cows, and the differences of these behaviors can provide theoretical basis knowledge for improving milk production performance of dairy cows.

Cite this article

WU Fuxin, TONG Jinjin, ZHANG Hua, FANG Luoyun, XIONG Benhai, JIANG Linshu . Behavioral Differences of Different Milk Yield Dairy Cows and Its Correlation with Lactation Performance[J]. Chinese Journal of Animal Nutrition, 2019 , 31(7) : 3156 -3163 . DOI: 10.3969/j.issn.1006-267x.2019.07.026

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