Clinical pathological changes of blood and risk prediction of ovarian cysts in postpartum of high producing dairy cows
10.16303/j.cnki.1005-4545.2017.08.31
- VernacularTitle:高产奶牛产后卵巢囊肿的血液临床病理学变化及其预警评估
- Author:
Yang ZHAO
;
Weidong QIAN
;
Yu CAO
;
Hongyou ZHANG
;
Cheng XIA
;
Chuang XU
- Keywords:
cows;
ovarian cyst;
negative energy balance;
blood clinical pathology;
risk prediction
- From:
Chinese Journal of Veterinary Science
2017;37(8):1600-1604
- CountryChina
- Language:Chinese
-
Abstract:
In this study,70 cows with (34.55 ± 8.44) kg per day milk,(2.24 ± 1.01) years at (60-90)d postpartum were chosen from an intensive dairy farm in Heilongjiang province.Ten plasma parameters including reproductive hormones,energy metabolism,liver function and minerals were measured at(60-90)d postpartum from the estrous and ovarian cyst dairy cows,combined with binary Pearson correlation analysis,Logistic analysis and ROC analysis.The results showed that:the incidence of ovarian cysts in this farm was 9.8％,its main reason is negative energy balance;the plasma concentrations of FSH,LH and P4 in ovarian cysts were lower than those in estrus group,but E2 (6.2 ng/L) was significantly higher than that in estrus group ((91.97± 10.62) ng/L);the plasma concentrations of NEFA,BHBA and AST were significantly increased in ovaries cysts at 14-21 d and 60-90 d,and Glu was significantly lower than that in estrus group.When the plasma concentration of BHBA were more than 0.855 mmol/L,NEFA more than 0.585 mmol/L,AST more than 77.0 U/L at 14-21 d postpartum,the risk of ovarian cyst increased.Negative energy balance can cause disorder of reproductive hormone secretion in early lactation cows,and then provoke cyst of follicle.Plasma NEFA,BHBA and AST of dairy cows postpartum can be used to predict the risk of ovarian cysts.
