Effect of Phenotype on reproductive performance in Awassi ewes

A. Dakheel, H.

	Effect of Phenotype on reproductive performance in Awassi ewes
Al-Anbar Journal of Veterinary Sciences
Article 1, Volume 9, Issue 2, 2016, Pages 72-76 PDF (581.05 K)
Author
H. A. Dakheel
Abstract
The study was conducted on 113 local Iraqi ewes, presented in Al- Jazeera - Al-budiab area which belongs of Al- Anbar province. The age of the animals ranged from 2-5 years. The animals were fed on free rearing and given 2% of B.W. conc. and the water were given ad libtum. The animals were divided into three groups according to the colors of the face and body. The first group (No. = 40) have Brown color of the face and white color of the body. The second group (No.=46) have a Black color of the face and white color of the body. The third group (No. =27) have a Black color of the face and spotted body. Chi-square test were used for analysis of data. The results showed that the total conception rate were 49.5% (56/113), while the total twinning rate was 7.07% (8/113). The results also showed that there is an increase in conception rate in the 2nd and 3rd group (54.3%, 55.5%) as compared with 1st group (40%). There was a significant difference (P≤0.05) in conception rate between 2nd, 3rd and the first group. Twining rate was 6.6%, 13.6 and 36.6% in the 1st, 2nd and 3rd groups respectively. There was a significant difference (P≤0.05) in twinning rate between different groups. The fertility rate were 42.5%, 60.8% and 70.3% in the lst, 2nd the 3rd groups respectively. The Birth rate were 106.2%, 112% and 126.6% in the 1st, 2nd and 3rd group respectively. There was a significant difference in birth rate (P≤0.05) between the 3rd group and the other groups. It was concluded from this study that Iraqi local breed ewes having Black face with spotted body showed the best reproductive performance
Keywords
Phenotype; Reproductive performance; Awassi ewes

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