Characteristics of ketosis and its effect on lactation performance of dairy cows in large-scale pastures
10.16303/j.cnki.1005-4545.2025.07.19
- VernacularTitle:规模化牧场奶牛酮病发病特征及对奶牛泌乳性能的影响
- Author:
Hongyu WANG
1
;
Yan XING
;
Feng TIAN
;
Yunlong BAI
;
Cheng XIA
;
Chuang XU
Author Information
1. 黑龙江八一农垦大学动物科技学院农业农村部东北寒区牛病防治重点实验室,黑龙江大庆 163319
- Publication Type:Journal Article
- Keywords:
dairy cow;
ketosis;
nutrition metabolic disease;
lactation performance
- From:
Chinese Journal of Veterinary Science
2025;45(7):1502-1507
- CountryChina
- Language:Chinese
-
Abstract:
The purpose of this study was to clarify the incidence of ketosis in dairy cows in large-scale dairy farms and the effect of ketosis on the subsequent lactation performance of dairy cows.In this experiment,79 perinatal cows in 8 stages of prenatal 21,14,7 days,delivery day,postpartum 3,7,14,21 days were selected to determine the blood biochemical indexes such as BHB,GLU,NE-FA and ALT in their blood.According to the concentration of BHB in the blood,they were divided into healthy group(CON),subclinical ketosis group(SCK)and clinical ketosis group(CK).There was a disorder of mineral elements in dairy cows in the experimental ranch,and the liver function of dairy cows was abnormal,and there was a disorder of energy metabolism.The incidence of keto-sis in dairy cows in the survey pasture was 26.14％,of which the incidence of SCK was 19.32％,and the incidence of CK was 6.82％,which was comparable to the global average incidence and lower than the average incidence in China.Compared with CON cows,SCK and CK cows had energy metabolism disorders and abnormal liver function,and CK cows were more serious.The milk yield of dairy cows with ketosis decreased significantly.The milk fat rate of dairy cows in SCK group was higher than that in CON group,while the milk fat rate of dairy cows in CK group was significantly lower than that in CON group.The fat-to-egg ratio of dairy cows in CK group was sig-nificantly lower than that in SCK group and CON group.The changes of lactation performance in different types of ketosis at 6 months after ketosis were different,and the lactation performance of dairy cows in CON group was the most stable.In the production of pastures,timely and effective treatment and management are essential for restoring the health and milk production performance of dairy cows.Ketosis can lead to disorder of energy metabolism and abnormal liver function in dairy cows,reduce milk yield,and have a continuous effect on lactation performance of dairy cows.Maintaining the health of dairy cows is the key to improving milk production and maintaining sta-ble lactation performance.For different types of ketosis cows,corresponding management and treatment measures should be taken to reduce economic losses.
