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Impacts Of Vitamin C And E Injections On Ovarian Structures And Fertility In Holstein Cows Under Heat Stress Conditions, Juan GonzáLez Maldonado, Raymundo Rangel Santos, Raymundo Rodriguez De Lara, Gustavo Ramirez Valverde

Turkish Journal of Veterinary & Animal Sciences

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, …