Brangus ırkının İç Anadolu şartlarında büyüme, yaşama gücü ve besi performansının tesbiti
Growth, livability and fattening performance of brangus cattle in Central Anatolian conditions
- Tez No: 37809
- Danışmanlar: PROF. DR. ORHAN ALPAN
- Tez Türü: Doktora
- Konular: Veteriner Hekimliği, Veterinary Medicine
- Anahtar Kelimeler: Belirtilmemiş.
- Yıl: 1994
- Dil: Türkçe
- Üniversite: Ankara Üniversitesi
- Enstitü: Sağlık Bilimleri Enstitüsü
- Ana Bilim Dalı: Zootekni (Veterinerlik) Ana Bilim Dalı
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: 121
Özet
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Özet (Çeviri)
The study was conducted to investigate the livability, growth, performance of Brangus Cattle obtained by frozen Embrio Transfer to Brown Swiss and Holstein heifers in the Middle Anatolian Conditions. The same traits were also compared with Brown Swiss breed. The growth performance was carried out from birth to 18 months of age. Frozen Brangus embrios imported from USA were non-surgical ly transferred to 64 Brown Swiss and 31 Holstein heifers. Recipient heifers were synchronized by two prostaglandin injections 1 1 days apart. Transfers were performed 7 days after the estrous. The pregnancy tests were carried out by rectal palpation 45 days after insemination. Thawed embrios were classified as, 69 morula, 11 early blastocyst, 14 blastocyst and 1 expanded blastocyst. The quality classes were excellent Gl), good (G2) and fair (G3) and the number of embrios in each class were 45, 43 and 7 respectively. The overall pregnancy rate was 29.47 % The rates were 39.28 % in (Gl) and 25.80 % in (G2) embrios. The highest pregnancy rate was obtained from blastocyst phase embrio trasfers and the ratio was 62. 50 %. The average birth weights in Brangus and Brown Swiss breeds were 36.65 and 40.44 kg in males and 33.25 and 34.75 kg, in females respectively. The live weights in the breeds at 12 months of age were 415.19 and 277.85 kg in males and 336.35 and 217.33 kg in the females in the above order. The average values in wither heights at birth Brangus and Brown Swiss males were 70.12 ad 77.70 cm and in the females were 67.93 and 78.12 cm, respectively. At 12 months of age the superiorities males were reversed and the averages were 126.35 and 111.71 cm in the males and 119.35 and 107.50 cm in the females. At 18 months of age the same trends were continued.97 Similar results were obtained for body length, heart girth and cannon bone circumference measurements. The differences in live weights and growth traits were not statistically significant between the breeds at birth. However, Brangus breed had higher values in all traits at the fallowing periods of measurements (p
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