2000 Cilt 19 Sayı 1-2
Permanent URI for this collectionhttps://hdl.handle.net/11452/17936
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Browsing by Author "Çörekci, Şebnem Gündal"
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Item Evaluation of hb1 genotype obtained by the crossbreeding of hampshire down and Kıvırcık sheep breeds(Uludağ Üniversitesi, 1999-07-26) Demir, Hıdır; Özcan, Mustafa; Yılmaz, Alper; Çörekci, Şebnem GündalThis study is a part of the project carried out by The Ministry of Agriculture and Rural Affairs together with several Associations in order to improve meat type sheep breeding in Turkey. The general aim of the project was determined as fıxing high meat yield meat sheep breeds which have good adaptation to the environmental conditions of Turkey and to cover the meat type ram needed for improving the meat yielding of indigenous sheep breeds within the country. By this project crossbreeding of Kıvırcık sheep which is the common indigenous sheep breed of the region with Hampshire Down rams which were brought to Inanlı State Farm from Britain, was begun in 1987. In 1988 F1 lambs, in 1990 by the crossbreeding of Hampshire Down x F1, HB1 lambs were produced. In the following years type fıxing studies were held by the mating of HB1's among themselves. In this study, the live weight before mating, greasy fleece weight and fertility characters of 115 HB1 ewes which were used in 1995-1996 breeding season and the survival and growth characters of 113 lambs until 90th day of age were investigated. Live weight before mating of HB1 ewes was 59.70 kg, greasy fleece weight was 2.26 kg, birth rate was 80.87%, litter size was 1.21, birth and 90th day live weights ofHB1 lambs were 4.10 kg and 20.25 kg respectively and survival rate of lambs till 90th day was 81.4%.