The Technical and Financial Effects of Parenteral Supplementation with Selenium and Vitamin E during Late Pregnancy and the Early Lactation Period on the Productivity of Dairy Cattle.

T Bayril,A S Yildiz,M Köse,F Akdemir,O Yilmaz,C Yalcin

doi:10.5713/ajas.14.0960

T Bayril, A S Yildiz + Show 4 more

Open Access

https://doi.org/10.5713/ajas.14.0960

Copy DOI

Abstract

This study aimed to determine the effects of parenteral selenium (Se) and vitamin E supplementation on economic impact, milk yield, and some reproductive parameters in high-yield dairy cows in the dry period and in those at the beginning of lactation. At the beginning of the dry period, cows (n = 323) were randomly divided into three groups as follows: Treatment 1 (T1), Treatment 2 (T2), and Control (C). Cows in group T1 received this preparation 21 days before calving and on calving day, and cows in group T2 received it only on calving day. The cows in the control group did not receive this preparation. Supplementation with Se increased Se serum levels of cows treated at calving day (p<0.05). Differences in milk yield at all weeks and the electrical conductivity values at the 8th and 12th weeks were significant (p<0.05). Supplementation with Se and Vitamin E decreased the incidence of metritis, the number of services per conception and the service period, but had no effects on the incidence of retained fetal membrane. A partial budgeting analysis indicated that Se supplementation was economically profitable; cows in group T1 averaged 240.6$ per cow, those in group T2 averaged 224.6$ per cow. Supplementation with Se and Vitamin E has been found to increase serum Se levels, milk yield, and has positive effects on udder health by decreasing milk conductivity values and incidence of sub-clinical mastitis.

Highlights

Milk yield and fertility are directly related to profitability in dairy farms
Cows that are especially highly efficient are predisposed to metabolic, infectious and reproductive diseases during the periparturient period because of immune system suppression, rapid hormonal changes during birthing, and metabolic stress associated with lactation (Arslan and Tufan, 2010)
The periparturient period is a time during which dairy cows are at risk, and they are prone to diseases that could affect their productivity

Summary

INTRODUCTION

Milk yield and fertility are directly related to profitability in dairy farms. To sustain high milk yield, fertility must be kept at an optimal level. The lack of Se has been reported to with electronic systems and determined by the herd cause decreases in fertility, mastitis, reductions in milk yield, manager as part of a herd management program (Dairy Plan increases in the incidence of retained placenta, and loss of C21, Westfalia Surge, Turkey). It has been reported that the parenteral use of Se and Vit E during late pregnancy Experimental design provides increased fertilization in the number of service per At the beginning of the dry period, cows (n = 323) were conception and pregnancy rate, decreased open days, randomly divided into three groups as follows: Treatment 1 ovarian cysts, incidence of mastitis and retained placenta (T1), Treatment 2 (T2) and Control (C). Mastitis Test from computer records for cows within 30 ii) Cost saved included the reductions of the incidence days postpartum that had an increased milk electrical of sub-clinical mastitis and metritis, which include: conductivity. 2.2 Research findings i) New revenues from selenium supplementation Semen cost ($/dose)

26.3 Average market price included

DISCUSSION

CONCLUSION

Findings

CONFLICT OF INTEREST