Effects of single deep insemination on transferable embryo recovery rates in superovulated dairy cows.
Thirty superovulated Friesian lactating cows were randomly assigned to two groups. Group I donors were inseminated with one unit of semen deposited into the uterine body at 8, 20 and 32 h after the onset of estrus. Group II donors were inseminated with one unit of semen deposited deep into the uterine horns at 15 h after the onset of estrus. Neither the mean rates of fertilized ova nor the mean rates of transferable embryos were different between treatments (P > 0.05).
Gatius
F L
FL
Departmento de Producción, Animal Escuela Superior de Agricultura, Avda. Alcalde Rovira Roure, 177 25006, Lérida, Spain.
Urgel
J C
JC
Asensio
E A
EA