Summary and Implications
The present study investigated the effects of climatic variables on the quality grade and quantity of in vivo produced bovine embryos. High temperature during the early embryonic development stage, one day after AI to flush, tended (P < 0.10) to decrease the quality of embryos recovered. High Temperature-Humidity Index during the early antral follicular stage, 40 to 45 days prior to ovulation, tended to improve the total number of freezable and transferrable embryos recovered per flush (P < 0.10). Increased wind speed at the early antral follicular phase was associated with a significant increase of the percentage of quality grade 1 embryos recovered (P < 0.05). This implies that wind has a significant effect in the quality grade and quantity of in vivo produced bovine embryos that is rarely taken into consideration.
Iowa State University
Chinchilla-Vargas, Josue; Jahnke, Marianna M.; Dohlman, Tyler M.; Gunn, Patrick; and Rothschild, Max F.
"Climatic Factors Affecting Quantity and Quality Grade of in vivo Produced Bovine Embryos,"
Animal Industry Report:
AS 664, ASL R3215.
Available at: https://lib.dr.iastate.edu/ans_air/vol664/iss1/13