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Impacts of vitamin C and E injections on ovarian structures and fertility in Holstein cows under heat stress conditions.
- Source :
-
Turkish Journal of Veterinary & Animal Sciences . 2017, Vol. 41 Issue 3, p345-350. 6p. - Publication Year :
- 2017
-
Abstract
- This study evaluated the effect of injecting vitamin C (VC) and E (VE) on size of the preovulatory follicle, volume of the corpus luteum, and pregnancy rates in Holstein cows under heat stress conditions (temperature humidity index > 74). Sixty-two cows were randomly assigned to one of four treatments: 1, control, n = 15: cows were not supplemented with vitamins; 2, VCG, n = 15: cows were simultaneously injected i.v. with 500 and s.c. with 2500 mg of VC before and after estrus; 3, VEG, n = 15: cows received an i.m. injection of 3000 IU of VE before estrus; 4, VCEG, n = 17: cows were injected with VC and VE in the same way and doses as in treatments 2 and 3. Treatment did not significantly affect any of the measured variables, despite a numerical increase in pregnancy rates in cows injected with vitamins (7.5 ± 7.3%, 9.6 ± 9.4%, 15.1 ± 10.0%, and 18.34 ± 9.9% for control, VCG, VEG, and VCEG, respectively). In conclusion, injections of vitamin C and E did not affect either the development of the preovulatory follicle and the corpus luteum or pregnancy rates in Holstein dairy cattle under heat stress conditions. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13000128
- Volume :
- 41
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Turkish Journal of Veterinary & Animal Sciences
- Publication Type :
- Academic Journal
- Accession number :
- 123768612
- Full Text :
- https://doi.org/10.3906/vet-1609-42