@article {10.3844/ajavsp.2007.55.61,
article_type = {journal},
title = {The Effect of Post-Mating Progesterone Supplement on Pregnancy and Lambing Rates of Ewes Bred Out-of-season},
author = {Husein, Mustafa Q. and Ababneh, Mohammed M. and Hijazi, Jomana F.},
volume = {2},
number = {3},
year = {2007},
month = {Dec},
pages = {55-61},
doi = {10.3844/ajavsp.2007.55.61},
url = {https://thescipub.com/abstract/ajavsp.2007.55.61},
abstract = {The objective of this experiment was to determine whether post-mating progesterone (P4) supplement improves pregnancy and lambing rates in ewes bred during the seasonal anestrous period. In June, 39 synchronized to estrus Awassi ewes were allowed with four harnessed fertile rams immediately following CIDR-G device removal (day 0 and 0 hour). Five days following ram introduction, ewes were randomly assigned to four groups to be treated post-mating with intramuscular injections of 20 mg P4 supplement once daily from day 5 to day 9 (P4-D5-9), days 10 to 14 (P4-D10-14), days 5 to 14 (P4-D5-14) or did not receive P4 supplement (control). Blood samples were collected from all ewes for P4 analysis. Progesterone concentrations prior to CIDR-G insertion were basal and no differences in P4 concentrations were found on days -12, -10 and between days 0 and 5 among groups. Progesterone concentrations between days 5 and 15 differed (p},
journal = {American Journal of Animal and Veterinary Sciences},
publisher = {Science Publications}
}