ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2018, Vol. 49 ›› Issue (7): 1387-1393.doi: 10.11843/j.issn.0366-6964.2018.07.007

Previous Articles     Next Articles

Study on the Activity Alteration of Dairy Cow during Estrus

LI Lan-qi1,2, LIU Jiang-jing2,3, CHEN Xiao-li2, LI Xin2, LU Yong-qiang4, WANG Shui-lian1*, WANG Dong2*   

  1. 1. College of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China;
    2. The Key Laboratory of Farm Animal Genetic and Utilization of Ministry of Agriculture, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
    3. College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China;
    4. Animal Husbandry Station of Beijing, Beijing 100107, China
  • Received:2017-12-04 Online:2018-07-23 Published:2018-07-19

Abstract:

In order to improve the detection rate of estrus determination via pedometer, the activity alteration of dairy cows affected by parities, seasons and types of estrus treatment was compared before and after estrus. 157 randomly selected dairy cows(150 postpartum healthy lactating dairy cows and 7 primiparous ones) in a dairy farm were analyzed in this study. The activity of the experimental cows before and after estrus were measured by pedometer, and the estrus status were confirmed by rectal examination. The detection of pedometer showed that the activities of cows after the onset of estrus(>1 500) were significantly higher than those during diestrus(<500)(P<0.05). The maximum activities(2 179±1 073) was observed at 4.5 h after the onset of estrus and gradually decreased till the end of the estrus to the level of diestrus. The amount of increased activity and its duration of cows during estrus were markedly influenced by parities, seasons and types of estrus treatment(P<0.05). In conclusion, parities, seasons and types of estrus treatment must be taken into account comprehensively when we use pedometer to detect estrus Holstein cows automatically. And then set an estrus prediction threshold according to local specific circumstances.

Key words: cow, estrus determination, activity amount, pedometer

CLC Number: