Tekirdağ damızlık sığır yetiştiricileri birliğinde kullanılan holstein ırkı boğaların kızlarının süt verim özelliklerinin belirlenmesi
Özet
Research Materials contains from Holstein-Friesian milk cows raising unit members to Tekirdag Animal for Breeding Producer Union (Tekirdag Damizlik Sigir Yetisitirici Birligi) years between 1997-2004 on Holstein-Friesian cows milk productivity features. In this research 44 Holstein-Friason milk cows 662 female babies 1294 unit lactation milk productivity examed. According to research results Holstein-Friason milk cows on average three lactation period in order lactation milk productivitiy is 6164,78 kg. Importance of lactation order on lactation milk productivity (P>0,01) found cosiderably important. In characteristic of milk productivity genetic parameters in REML (Restricted Maximum Likelihood) "Mixed Model Equality Version" taken as approximate base. Approximate lactation milk productivitys participation percentage and repeated percentage in order 0,03 and 0,049 found. With BLUP's "Sir Model" Animal breeding korelation coefficient merit approximately 0,27 found. Key Words: Genetic parameter, Lactation milk yield, Holstein- Friesian
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