Effect of system of management and genotype on reproductive performance of goats in Oman | Effet du syseme de gestion et du genotype sur la performance reproductive des chevres en Oman
2000
El Hag, M.G. (Rumais Livestock research Station, Seeb (Oman)) | Azam, A.H. | Al Habsi, R.S.
This paper presents the effects of system of management and genotype on maternal performance of goats. Three goat breeds were used in a completely randomized (3x2) factorial design. Factors investigated were genotype or breed (local Dhofari : LD; Damascus "Shami": DS and Anglo-Nubian : AN) and management system (intensive: three matings 2 years versus conventional : one mating/year). There was a significant (P0.05) breed effect for birth weight, with DS goats being the heaviest and fastest in growth from birth to weaning and from birth to sexual maturity. DS showed higher twinning percent (80), litter size at birth (1.8), litter size at weaning (1.7) and litter weight at weaning, kg (28.4) than the other breeds. DS goats produced almost double the amount of milk per lactation (163 kg) compared to the other breeds. Higher economic returns (O.R./doe/year) were obtained with DS (28) than with LD (15.5) and AN (4.0). The system of management affected the maternal performance more than the goat genotype. Intensive system significantly (p0 05) improved prolificacy (2.1 versus 1.2); litter weight at birth, 7.0 kg versus 4.0 and litter weight at weaning, 27.0 kg versus 14.8 kg. Intensive system of management substantially improved economic returns (O.R./goat/year) more than 300/ (39.2 versus 9.0).
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
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