ONUR YILMAZ, İBRAHİM CEMAL, ORHAN KARACA, NEZİH ATA

Association of calpastatin (CAST) gene polymorphism with weaning weight and ultrasonic measurements of loin eye muscle in kıvırcık lambs

Bu çalışmada Türkiyede önemli bir et tipi koyun olan Kıvırcık ırkı kuzularda karkas kalite karakteristikleri ile Calpastatin geninin ilişkisi araştırılmıştır. Kıvırcık kuzularda Calpastatin lokusunun M allelinin en yaygın allel olduğu tespit edilmiştir. MM, MN ve NN genotipleri için genotip frekansları sırasıyla %72.91, %22.66 ve %4.43 olarak bulunmuştur. Bu tek nokta mutasyonunun (SNP) bel gözü kasına (Musculus longissimus thoracis et lumborum -MLD) ait yağ kalınlığı ve deri+yağ kalınlığı değerleri ve günlük canlı ağırlık artışı ile ilişkili olduğu ortaya konmuştur (P

Kıvırcık kuzularda calpastatin gen polimorfizmi ve sütten kesim ağırlığı ve ultrasonik göz kası ölçümleri ile ilişkisi

This study was to investigate the association of Calpastatin (CAST) gene with carcass quality characteristics in Kıvırcık lambs, which are important in Turkey in terms of meat production and quality. It was found that allele M of Calpastatin locus was the most common allele. MM, MN and NN genotype frequencies were 72.91%, 22.66% and 4.43%, respectively. This SNP was associated with backfat thickness and skin+backfat thickness values of loin eye muscle (Musculus longissimus thoracis et lumborum -MLD) and average daily gain (P<0.05). Live weight, average daily gain, backfat thickness and skin+backfat thickness mean values were found to be lower in animals with NN genotype when compared to those with MM and MN genotype. The results showed that Calpastatin gene afected back fat and skin+backfat and that they had less fatty carcass than those with NN genotype.

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