Impact of Various Protocols of Estrus Synchronization in Some of Reproductive Hormones for Two Sheep Breeds in Iraq.

Abstract

The experiment was conducted at the Khairat Al-Ittihad station located in the Al-Shumali district of Babil Governorate from January 1, 2024, to June 20, 2024, to assess the effect of hormonal treatments on estrogen and progesterone hormones concentrations of Awassi and Naimi ewes.Results showed a significant effect (P< 0.01) of treatment (before and after) on estrogen concentration for both 1^st and 2^nd treatments in Awassi sheep breed.The estrogen concentration after treatment was 39.74 pg/ml compared with it concentration before treatment which was 50.96 pg/ml in 1^st treatment. The estrogen level in 2^nd treatment differed significantly before and after treatment (53.08 and 42.94) pg/ml respectively.Results indicated that the estrogen levels differed significantly before and after treatment in all treatments for Naimi sheep breed. In case of 1^st, 2^nd and 3^rd treatment, the estrogen hormone level differed significantly (P < 0.05) before and after treatments. The hormones levels were 43.25, 41.66 and 42.34 pg/ml after treatment respectively compared with 51.73, 50.76 and 50.44 pg/ml before treatment respectively. The 4^th treatment effect significantly (P < 0.01) on estrogen hormone level, the level was 40.83 pg/ml after treatment compared with 50.89 pg/ml before treatment.  Awassi sheep group that treated with 4^th treatment showed a significant difference in progesterone hormone level namely, 1.38 and 5.36 ng/ml respectively.The difference between progesterone level before and after treatment in Naimi was highly significant (P<0.01) for all treatments.