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Permanent URI for this collectionhttps://hdl.handle.net/11452/21452
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Item Çeşitli ülkelerde siyah alaca sıǧırlar için kullanılan seleksiyon indeksleri ve Türkiye için öneriler(Kafkas Üniversitesi, 2012) Kumlu, Selahattin; Duru, Serdar; Tuncel, Erdoğan; Uludaǧ Üniversitesi/Karacabey Meslek Yüksekokulu.; Uludaǧ Üniversitesi/Ziraat Fakültesi/Zooteknik Bölümü.; 0000-0001-5243-4458; I-9517-2017; 7003939054; 7006929824This research was conducted in order to suggestion of some selection indices for Holstein cattle in Turkey. The material of the research were composed of yield, SCS and type traits belong to 3.000 daughters raised of 100 sires in 150 herds. The MTDFREML package program was used for estimation of variance components and breeding values. As a result, five indices were discussed for Turkey.Item Estimates of (co) variance components for direct and maternal effects on birth weight of Karacabey Merino lambs(TÜBİTAK, 2009) Koyuncu, Mehmet; Duru, Serdar; Uludağ Üniversitesi/Ziraat Fakültesi/Hayvan Bilimleri Bölümü.; Uludağ Üniversitesi/Karacabey Meslek Yüksekokulu/Hayvancılık ve Sağlık Programı.; 0000-0001-5243-4458; 0000-0003-0379-7492; I-9517-2017; AAG-8536-2021; 16156692300; 7003939054The aim of the present study was to estimate (co) variance components for birth weights of Karacabey Merino lambs. The model fitted included direct genetic, maternal genetic, and direct-maternal genetic covariance and maternal permanent environmental effects. Data and pedigree information of the Karacabey Merino sheep used in this study were collected at the Marmara Animal Breeding Research Institute from 1998 to 2002. Variance components for birth weights were estimated by the MTDFREML. A direct heritability estimate of 0.08 and a maternal heritability estimate of 0.05 were obtained for birth weight. The maternal permanent environmental effect was significant. The estimate of the direct-maternal genetic correlation was found high and negative. In conclusion, maternal effects on birth weight of Karacabey Merino lambs were significant and need to be considered in any selection program undertaken in this breed.Item Estimation of variance components and genetic parameters for type traits and milk yield in Holstein cattle(TÜBİTAK, 2012) Kumlu, Salahattin; Duru, Serdar; Tuncel, Erdoğan; Uludağ Üniversitesi/Karacabey Meslek Yüksekokulu.; Uludağ Üniversitesi/Ziraat Fakültesi/Hayvan Bilimleri Bölümü.; 0000-0001-5243-4458; I-9517-2017; 7003939054; 7006929824This research was conducted to estimate variance components and genetic parameters for type traits and milk yield in Holstein-Friesian cattle. In this study, 597 daughters of 158 sires in 128 herds were classified. In the data analysis, type scores for 354 daughters bred within 70 herds sired by 46 sires that had at least 3 daughters, and 304 lactation records for 206 daughters within 56 herds sired by 37 sires, were considered. For estimation of variance components and correlations among the traits, the MTDFREML package program was used. The mean stature was 145.56 cm. Means for linear traits varied from 4.47 for fore teat placement to 6.42 for body depth. Heritability for fore udder attachment and front teat placement were both 0.00. Heritability for linear traits estimated for lowest and highest dairy character values and for body capacity were 0.06 and 0.62, respectively. Values for heritability and repeatability of milk yield were 0.20 and 0.20, respectively.Item Koçaş Tarım İşletmesinde yetiştirilen Siyah-Alaca sığırların süt ve döl verimleri üzerine bir araştırma 1. süt verim özellikleri(TÜBİTAK, 2002) Duru, Serdar; Erdoğan, Tuncel; Uludağ Üniversitesi/Ziraat Fakültesi/Zooteknik Bölümü.; 0000-0001-5243-4458; I-9517-2017; 7003939054; 7006929824This research was conducted to determine the characteristics of milk yield of Holstein Friesian cows raised at Kocas state farm in Central Anatolia. The material of the research was 970 lactation records of 362 dairy cows raised from 1988 to 1995 at Kocas state farm. Statistical analysis of the records was conducted with the Minitab version 9.2 computer program. Significant differences between groups were determined by the method of Least Significant Difference (LSD). The general mean values of lactation length, lactation milk yield and 305 day milk yield were respectively 304.4+/-1.39 days, 4966+/-32.96 kg and 4784+/-27.35.Item Koçaş Tarım İşletmesinde yetiştirilen siyah-alaca sığırların süt ve döl verimleri üzerine bir araştırma 2. döl verim özellikleri(TÜBİTAK, 2002) Duru, Serdar; Tuncel, Erdoğan; Uludağ Üniversitesi/Ziraat Fakültesi/Zooteknik Bölümü.; 0000-0001-5243-4458; I-9517-2017; 7003939054; 7006929824This research was conducted to determine the characteristics of reproductive performance of Holstein Friesian cows raised at Kocas state farm in Central Anatolia. The material of the research was 362 dairy cows raised from 1988 to 1995 at Kocas State farm. Statistical analysis of records was conducted with the Minitab version 9.2 computer program. Significant differences between groups were determined by the method of Least Significant Difference (LSD). The general mean values of first breeding age, age at first calving, reproductive efficiency, calving interval, gestation length, dry period, service period and insemination number per conception were 18.04+/-0.10 months, 27.70+/-0.11 months, 96.50+/-0.32%, 12.30+/-0.05 months, 276.50+/-0.17 days, 65.37+/-0.78 days, 93.33+/-1.57 days and 1.33+/-0.02, respectively.Item Siyah alaca sıǧırlarda akrabalı yetiştirme ve akrabalı yetiştirmenin kontrolünde çiftleştirme programının önemi(Kafkas Üniversitesi, 2012) Duru, Serdar; Uludağ Universitesi/Karacabey Meslek Yuksekokulu.; 0000-0001-5243-4458; I-9517-2017; 7003939054Bu araştırma, Siyah Alaca sığırlarda akrabalık derecesi ile akrabalı yetiştirme katsayısını hesaplamak ve akrabalı yetiştirmeden korunmak için çiftleştirme programının önemini ortaya koymak amacıyla yapılmıştır. Bu amaçla Bursa Damızlık Sığır Yetiştiricileri Birliği üyesi bir işletmede bulunan 219 sığırın soy kütüğü kayıtları kullanılmıştır. Hayvanlar arasındaki akrabalık derecelerinin ve akrabalı yetiştirme katsayılarının hesaplanmasında Relax2 programı kullanılmıştır. Akrabalı yetiştirilmiş hayvan sayısı 38’dir. Akrabalı yetiştirme katsayısının ortalaması ve standart hatası %1.91±0.25 bulunmuştur. Suni tohumlama boğaları ile sürüdeki dişiler arasındaki toplam 3937 akrabalık ilişkisinden %28.78’inin (1133 çift) akrabalık derecesi %12.5 ve üzerinde ve ortalama %30.99 bulunmuştur.