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Effect of pre-partum vitamin E and selenium treatments on reproductive performance of Balady cows and immune activity of their offspring

Abstract

Responses of late pregnant Balady cows to prepartum treatment with selenium (Se) and vitamin E ( Vit E) were evaluated by investigating uterine health and reproductive performance of the dams, and by determining immune responses and growth of their offspring. Twenty late- pregnant Balady cows were divided into two homogenous groups, according to their age, parity and weight. In addition to basal ration fed to group 1 (control), animals of group II were supplemented with oral vit. E (400 IU/ cow/ day) and injected with Se (5mg/cow / day), and then weekly unit the end of the experiment. Serum samples were harvested biweekly, starting 6 weeks pre- partum until 15 weeks postpartum from all cows as well as from their neonatal calves before colostrum feeding and biweekly unit weaning. The serum samples were used to determine selenium in dams and their offspring and for 1 g G and 1Gm in calves. Serum selenium in cows and calves was significantly elevated (P<0.05) by selenium supplementation compared to control. Administration of Se and vit E significantly reduced the duration of udder edema, incidence of retained placenta and metritis and facilitated the calving. The service period, days open, the interval from calving to uterine involution, first estrus, first ovulation, and the number of services per conception were also decreased compared to those in non- treated cows. Body weight gain of calves was favorably influenced after the pre- partum treatment of their dams with Se and vit. E.. Ketwords: balady cows, vit. E. And selenium, reproduction, immunity.

Publication year

2000

Pages

599-607

Availability location

معهد بحوث الانتاج الحيوانى-شارع نادى الصيد- الدقى- الجيزة

Availability number

Organization Name

Animal Production Research Institute (APRI)

City

الجيزة

serial title