@article {10.3844/ajavsp.2007.23.28, article_type = {journal}, title = {The Effects of Short or Long Term FGA Treatment with or without eCG on Reproductive Performance of Ewes Bred Out-of-season}, author = {Husein, Mustafa Q. and Ababneh, Mohammed M. and Abu-Ruman, Dia S.}, volume = {2}, number = {1}, year = {2007}, month = {Mar}, pages = {23-28}, doi = {10.3844/ajavsp.2007.23.28}, url = {https://thescipub.com/abstract/ajavsp.2007.23.28}, abstract = {The objective was to evaluate the effects of intravaginal FGA sponges inserted for 4 or 12 days with or without eCG on reproductive performance of ewes out-of-season. Forty-eight anestrous ewes were assigned in equal numbers to four treatments in a 2x2 factorial design. Ewes were administered with FGA sponges on May 17 for 12 days (12-day-FGA-eCG and 12-day-FGA groups, n= 12 each) and on May 25 for 4 days (4-day-FGA-eCG and 4-day-FGA groups, n= 12 each). All treatments were timed to end together on May 29 (day 0, 0 h) at which time sponges were withdrawn and eCG or saline was injected. Five fertile rams which had been isolated from ewes were joined at 0 h for breeding and estrus detection. Blood samples were collected to compare progesterone (P4) concentrations and for pregnancy diagnosis. Overall estrus expression occurred in 40/48 ewes which differed only between 12-day-FGA-eCG and 4-day-FGA (p}, journal = {American Journal of Animal and Veterinary Sciences}, publisher = {Science Publications} }