| Metroptosis and endometritis are the common disease some buffalo farms in Guangxi, they seriously damage the reproductive performance and production performance of buffalo. However, the reports on metroptosis and endometritis of buffalo was very limited. To understand the incidence and causative agents of metroptosis on buffalo farms in Guangxi Zhuang Autonomous Region, Test1, Field investigation and inquire were conducted in nine buffalo farms. Test2, on one buffalo farm in Nanning area,53buffalo were selected, prenatal blood plasma levels were determined for potassium (K), calcium (Ga), phosphorus (P), total protein (TP), albumin (ALB), globulin, uric acid (UA), total cholesterol (CHO), triglyceride (TG), total antioxidant (TAC) and malondialdehyde (MDA) detection. Aaccording to the buffalo with or without metroptosis, animals were divided into metroptosis group (M, n=7) and healthy controls (UM, n=46). Statistical differences of above biochemical parameters between two groups were analysed. In order to reveal etiology of endometritis, Test3,54buffalo were selected in same buffalo farm as test2. Same plasma biochemical parameters as test2were analysed at the calving day, week1,3,5postpartum. Delivery status and disease of buffalo cows (eg childbirth, abortion, retained placenta, metroptosis, etc.) was recorded, then buffalo were divided into endometritis group (E, n=14) and healthy group(UE, n=40) based on animal with or without endometritis. The etiology of endometritis was investigated by analysis of biochemical parameters.The results:Test1, the average incidence of metroptosis in all of farms investigated was6.36%, the incidence varied with different farms. The incidence of metroptosis was higher in buffalo with higher milk yield and less consumed concentrate. Seasonal agents had not significant effect on the incidence of metroptosis. Test2, at one week prepartum and the day of delivery, buffalo in group M had significantly lower plasma levels of calcium, phosphorus than the level of the UM group, TAC level from week3to delivery day were significantly lower than the level of UM group, and MDA levels were significantly higher than UM group, M group buffalo plasma albumin levels close to the time of delivery and sustained decrease in prenatal and antenatal one week two weeks was significantly lower than the control group. M group buffalo had lower levels of plasma triglyceride from6weeks prenatal to childbirth day, reached significant lower level at one week prepartum than UM group buffalo. Test3, fourteen buffalo suffered from endometritis in all investigated animals, among them5buffalo had metroptosis,3buffalo suffered from dystocia, one undergoned miscarriage, one premature birth, one postpartum breast necrosis. the percent of above every disease in all14buffalo with endometritis were:36%,21%,7%,7%,7%; E group buffalo had lower plasma levels of phosphorus at all time points than UE group, at5week reached significant level between2groups. E group buffalo had significant lower total antioxidant levels and significant higherer MDA levels in all time than UE group. In E group buffalo the plasma total protein, uric acid, total cholesterol contents increased with the occurence of endometritis, trey were significantly higher at week5postpartum than those in UE group.Conclusion:the etiology of metroptosis in buffalo may be associated with lower plasma levels of calcium, phosphorus, and TAC, with higher peroxidation (MDA) level, concentrate supply insufficiency in prepartum period. The etiology of endometritis may be related to lower plasma phosphorus, TAC levels and to higher MDA, total protein, uric acid and total cholesterol levels postpartum. The relative disease happened at time of childbirth production are particularly vulnerable to lead endometritis. |
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