Genetic parameters for direct and maternal effects and estimation of breeding values for birth weight in Brown Swiss cattle

ÇOLAK, Mehmet; SAATCI, Mustafa; TİLKİ, Muammer

Genetic parameters for direct and maternal effects and estimation of breeding values for birth weight in Brown Swiss cattle

Muammer TİLKİ, (Kafkas Üniversitesi, Veteriner Fakültesi, Kars, Türkiye)

Mustafa SAATCI, (Mehmet Akif Ersoy Üniversitesi, Veteriner Fakültesi, Burdur, Türkiye)

Mehmet ÇOLAK (Bahri Dağdaş Uluslararası Tarımsal Araştırma Enstitüsü, Konya, Türkiye)

Turkish Journal of Veterinary and Animal Sciences

3 0

Yıl: 2008 Cilt: 32 Sayı: 4 Sayfa Aralığı: 287 - 292 Metin Dili: Türkçe İndeks Tarihi: 29-07-2022

Genetic parameters for direct and maternal effects and estimation of breeding values for birth weight in Brown Swiss cattle

Öz:

Bu çalışma, Bahri Dağdaş Uluslararası Tarımsal Araştırma Enstitüsünde yetiştirilen Esmer ırk sığırların doğum ağırlıklarının varyans unsurları, genetik parametreleri, ve damızlık değerlerinin tahmini için yapılmıştır. Çalışmada REML-BLUP tekniği kullanılmış, bu amaçla MTDFREML bilgisayar programından faydalanılmıştır. En basit modelden en yoğununa kadar toplam 6 farklı model uygulanmıştır. En uygun modelin, model 6 olduğu belirlenmiştir. Kalıtım derecesi, analık etkisinin olmadığı modelde en yüksek olarak tespit edilmiştir. Analık etkisi çevre faktörleri içerisinde önemli bir yer tutmasına rağmen, anadan kaynaklanan etki önemsizdir. Model 6’ya göre kalıtım derecesi (h2), analık kalıtım derecesi (m2) ve bu ikisi arasındaki genetik korelasyon (rAM) sırasıyla 0,15, 0,06 ve 0,92 olarak bulunmuştur. Çalışmada damızlık değerleri de tahmin edilmiştir. Fakat yıllara göre herhangi bir pozitif veya negatif eğilim görülmemiştir. Bu tür çalışmaların Türkiye hayvancılığına uyarlanması için daha detaylı ve uygun verilere ihtiyaç vardır.

Anahtar Kelime: sığır kalıtsallık genetik korelasyon doğum ağırlığı kümes hayvanları damızlık değeri analık etkisi genetik parametreler değişkenlik unsurları Amerikan Esmer Irkı

Konular: Ziraat Mühendisliği

Esmer ırk sığırlarda doğum ağırlığına ait direkt ve analık etkisi altındaki genetik parametreler ve damızlık değerlerin tahmini

Öz:

Variance components, genetic parameters, and breeding values for birth weight in Brown Swiss cattle reared in Bahri Da¤dafl International Agricultural Research Institute were estimated by REML-BLUP procedures using MTDFREML computer programme. Six different animal models were fitted for the trait ranging from a simple to the most comprehensive model. The most detailed model (model 6) provided the best fit to the used dataset. Heritability was higher in the model without maternal effect. Although maternal effect had a significant place for the data, environmental effect due to dam was not important. Heritability (h2), maternal heritability (m2), and the genetic correlation between these 2 parameters (rAM) were 0.15, 0.06 and 0.92, respectively, according best model (model 6). Breeding values were also calculated for the trait, but no positive or negative change has been observed between years. More detailed accurate data are needed to establish the applied method on the livestock sector in Turkey.

Anahtar Kelime: breeding value maternal effects genetic parameters variance components American Brown Swiss cattle heritability genetic correlation birth weight poultry

Konular: Ziraat Mühendisliği

Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık

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APA	TİLKİ M, SAATCI M, ÇOLAK M (2008). Genetic parameters for direct and maternal effects and estimation of breeding values for birth weight in Brown Swiss cattle. , 287 - 292.
Chicago	TİLKİ Muammer,SAATCI Mustafa,ÇOLAK Mehmet Genetic parameters for direct and maternal effects and estimation of breeding values for birth weight in Brown Swiss cattle. (2008): 287 - 292.
MLA	TİLKİ Muammer,SAATCI Mustafa,ÇOLAK Mehmet Genetic parameters for direct and maternal effects and estimation of breeding values for birth weight in Brown Swiss cattle. , 2008, ss.287 - 292.
AMA	TİLKİ M,SAATCI M,ÇOLAK M Genetic parameters for direct and maternal effects and estimation of breeding values for birth weight in Brown Swiss cattle. . 2008; 287 - 292.
Vancouver	TİLKİ M,SAATCI M,ÇOLAK M Genetic parameters for direct and maternal effects and estimation of breeding values for birth weight in Brown Swiss cattle. . 2008; 287 - 292.
IEEE	TİLKİ M,SAATCI M,ÇOLAK M "Genetic parameters for direct and maternal effects and estimation of breeding values for birth weight in Brown Swiss cattle." , ss.287 - 292, 2008.
ISNAD	TİLKİ, Muammer vd. "Genetic parameters for direct and maternal effects and estimation of breeding values for birth weight in Brown Swiss cattle". (2008), 287-292.

APA	TİLKİ M, SAATCI M, ÇOLAK M (2008). Genetic parameters for direct and maternal effects and estimation of breeding values for birth weight in Brown Swiss cattle. Turkish Journal of Veterinary and Animal Sciences, 32(4), 287 - 292.
Chicago	TİLKİ Muammer,SAATCI Mustafa,ÇOLAK Mehmet Genetic parameters for direct and maternal effects and estimation of breeding values for birth weight in Brown Swiss cattle. Turkish Journal of Veterinary and Animal Sciences 32, no.4 (2008): 287 - 292.
MLA	TİLKİ Muammer,SAATCI Mustafa,ÇOLAK Mehmet Genetic parameters for direct and maternal effects and estimation of breeding values for birth weight in Brown Swiss cattle. Turkish Journal of Veterinary and Animal Sciences, vol.32, no.4, 2008, ss.287 - 292.
AMA	TİLKİ M,SAATCI M,ÇOLAK M Genetic parameters for direct and maternal effects and estimation of breeding values for birth weight in Brown Swiss cattle. Turkish Journal of Veterinary and Animal Sciences. 2008; 32(4): 287 - 292.
Vancouver	TİLKİ M,SAATCI M,ÇOLAK M Genetic parameters for direct and maternal effects and estimation of breeding values for birth weight in Brown Swiss cattle. Turkish Journal of Veterinary and Animal Sciences. 2008; 32(4): 287 - 292.
IEEE	TİLKİ M,SAATCI M,ÇOLAK M "Genetic parameters for direct and maternal effects and estimation of breeding values for birth weight in Brown Swiss cattle." Turkish Journal of Veterinary and Animal Sciences, 32, ss.287 - 292, 2008.
ISNAD	TİLKİ, Muammer vd. "Genetic parameters for direct and maternal effects and estimation of breeding values for birth weight in Brown Swiss cattle". Turkish Journal of Veterinary and Animal Sciences 32/4 (2008), 287-292.