Bülent EKİZ, Mustafa ÖZCAN, Ayhan CEYHAN, Alper YILMAZ

The effects of some environmental factors affecting on the growth and greasy fleece yield at first shearing of Turkish merino (Karacabey Merino) lambs

Bu araştırma, Türk Merinoslarının (Karacabey Merinosu) doğum, sütten kesim, 1 yaş canlı ağırlığı ve ilk kırkımda elde edilen kirli yapağı ağırlığı özelliklerinin düzeyinin belirlenmesi ve bu verim özellikleri üzerindeki bazı çevresel etkilerin kantitatif olarak saptanması amacıyla yapılmıştır. Türk Merinosu kuzuların doğum ağırlığı ortalaması 4.83 kg, 90. gün canlı ağırlığı 32.14 kg, 1 yaş canlı ağırlığı 57.59 kg ve ilk kırkım kirli yapağı ağırlığı 6.36 kg olarak tespit edilmiştir. Doğum yılının, ana yaşının, doğum tipinin ve cinsiyetin kuzuların doğum, sütten kesim (90. gün), 1 yaş canlı ağırlığı ve ilk kırkımdaki kirli yapağı ağırlığına etkileri istatistiki açıdan önemli bulunmuştur. Ayrıca doğum ağırlığında (yıl x ana yaşı) ve (yıl x ana yaşı x doğum tipi), sütten kesim ağırlığında (yıl x ana yaşı x doğum tipi), 1 yaş canlı ağırlığında (yıl x ana yaşı) ve (yıl x cinsiyet), kirli yapağı ağırlığında (yıl x ana yaşı) ve (yıl x cinsiyet) interaksiyonlarının önemli düzeyde etkili olduğu saptanmıştır. Bu araştırmada tespit edilen etki payları dikkate alınarak, kuzuların verim değerleri düzeltilebilir ve ileriki yıllarda yapılacak farklı seleksiyon yöntemlerinin etkinliği artırılabilir.

Türk Merinoslarında (Karacabey Merinosu) büyüme ve ilk kırkım yapağı verimini etkileyen bazı çevresel faktörler üzerinde araştırmalar

This study was carried out to determine the production levels of Turkish Merino (Karacabey Merino) lambs for birth weight, weight at weaning and at first year of age and greasy fleece weight at first shearing and to investigate the effects of the measurable environmental factors affecting on these characteristics. The birth weight was 4.83 kg, weight at 90lh day of age was 32.14 kg, weight at first year of age was 57.59 kg and greasy fleece weight at first shearing was 6.36 kg for Turkish Merino lambs. The effects of birth year, dam's age, birth type and sex on birth weight, weight at weaning (90lh day) and at first year of age arid the greasy fleece weight at first shearing were found to be statistically significant. Also the interactions of year x dam's age and year x dam's age x birth type on birth weight; year x dam's age x birth type on weight at weaning; year x dam's age and year x sex on weight at first year of age and year x dam's age and year x sex on greasy fleece weight were found to be affecting significantly. By taking the effect shares of the factors affecting on these characteristics into consideration the production data of the lambs can becorrected and so the effectiveness of the different selection methods, which will be applied in the forthcoming years in the institute on Turkish Merino, might be improved.

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