Türk Merinosu koyunlarının büyüme döl ve yapağı verim özelliklerine bazı çevre faktörlerinin etkisi ve bu özelliklere ait parametrelerin tayini üzerine bir araştırma
Başlık çevirisi mevcut değil.
- Tez No: 60331
- Danışmanlar: Belirtilmemiş.
- Tez Türü: Doktora
- Konular: Veteriner Hekimliği, Veterinary Medicine
- Anahtar Kelimeler: Koyunlar, Sheep
- Yıl: 1988
- Dil: Türkçe
- Üniversite: İstanbul Üniversitesi
- Enstitü: Sağlık Bilimleri Enstitüsü
- Ana Bilim Dalı: Zootekni Ana Bilim Dalı
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: Belirtilmemiş.
Özet
were increasec r* 93 - the ago of lambs progressed. This value for type of birth was decreased following the 120 days of lamb age. The average body weights of ewes were found as lowest at 1 l/2 year old highest at k l/s year old. The greasy wool production weights were found highest i at 75 l/2 year^f ewes, this value decreased as the age progressed. The use as correction factors of the least squares constants obtained for different characteristics have been discussed. The respective heritability values estimated with paternal half-sib correlation metod, were found 0,l6, 0.08, 0.18 and 0.17 for birth, 60 day, 120 day and 180 day weights, 0,24-0^58 and 0“15-0.28 for greasy wool production and shear ing weights of lambs and yearling females. The phenotypic correlation between production traits, studied, were found i from 0.20 to 0,97. The highly positive genetic correlations, ranging from O.73 to 0.95, were found between lamb birth weight and weights of 60, 120 and 180 days of age. The cor- relations between the weightaj *fc 1 6 0-1 80 days of age were from 0*68 to 0.77. The correlation between lamb -weight and live weights after shearing were ranged from 0.71 to 0.91, This correlati on values for greasy wool production were ranged from 0.64 to O.89. In addition to above, the positive genetic correla tion between live weight of yearling female and wool produc- 4, tion was 0.51 level. According the above genetic findings, it I ?. - sgpears - ^ ' | that there is no antagonism to genetic improvements! throaglT I selection. In addition to this 1- 9^ - selection for any of the traits studied is likely to result in some ge netic increases on characters mentioned. In this study, considering the phenotypic and genetic parameters obtained for different production characteristics of Karacabey Merino, it is concluded that, the improvement through selection is likely to be small for lamb weightb and high for wool production*were increasec r* 93 - the ago of lambs progressed. This value for type of birth was decreased following the 120 days of lamb age. The average body weights of ewes were found as lowest at 1 l/2 year old highest at k l/s year old. The greasy wool production weights were found highest i at 75 l/2 year^f ewes, this value decreased as the age progressed. The use as correction factors of the least squares constants obtained for different characteristics have been discussed. The respective heritability values estimated with paternal half-sib correlation metod, were found 0,l6, 0.08, 0.18 and 0.17 for birth, 60 day, 120 day and 180 day weights, 0,24-0^58 and 0”15-0.28 for greasy wool production and shear ing weights of lambs and yearling females. The phenotypic correlation between production traits, studied, were found i from 0.20 to 0,97. The highly positive genetic correlations, ranging from O.73 to 0.95, were found between lamb birth weight and weights of 60, 120 and 180 days of age. The cor- relations between the weightaj *fc 1 6 0-1 80 days of age were from 0*68 to 0.77. The correlation between lamb -weight and live weights after shearing were ranged from 0.71 to 0.91, This correlati on values for greasy wool production were ranged from 0.64 to O.89. In addition to above, the positive genetic correla tion between live weight of yearling female and wool produc- 4, tion was 0.51 level. According the above genetic findings, it I ?. - sgpears - ^ ' | that there is no antagonism to genetic improvements! throaglT I selection. In addition to this 1- 9^ - selection for any of the traits studied is likely to result in some ge netic increases on characters mentioned. In this study, considering the phenotypic and genetic parameters obtained for different production characteristics of Karacabey Merino, it is concluded that, the improvement through selection is likely to be small for lamb weightb and high for wool production*
Özet (Çeviri)
were increasec r* 93 - the ago of lambs progressed. This value for type of birth was decreased following the 120 days of lamb age. The average body weights of ewes were found as lowest at 1 l/2 year old highest at k l/s year old. The greasy wool production weights were found highest i at 75 l/2 year^f ewes, this value decreased as the age progressed. The use as correction factors of the least squares constants obtained for different characteristics have been discussed. The respective heritability values estimated with paternal half-sib correlation metod, were found 0,l6, 0.08, 0.18 and 0.17 for birth, 60 day, 120 day and 180 day weights, 0,24-0^58 and 0“15-0.28 for greasy wool production and shear ing weights of lambs and yearling females. The phenotypic correlation between production traits, studied, were found i from 0.20 to 0,97. The highly positive genetic correlations, ranging from O.73 to 0.95, were found between lamb birth weight and weights of 60, 120 and 180 days of age. The cor- relations between the weightaj *fc 1 6 0-1 80 days of age were from 0*68 to 0.77. The correlation between lamb -weight and live weights after shearing were ranged from 0.71 to 0.91, This correlati on values for greasy wool production were ranged from 0.64 to O.89. In addition to above, the positive genetic correla tion between live weight of yearling female and wool produc- 4, tion was 0.51 level. According the above genetic findings, it I ?. - sgpears - ^ ' | that there is no antagonism to genetic improvements! throaglT I selection. In addition to this 1- 9^ - selection for any of the traits studied is likely to result in some ge netic increases on characters mentioned. In this study, considering the phenotypic and genetic parameters obtained for different production characteristics of Karacabey Merino, it is concluded that, the improvement through selection is likely to be small for lamb weightb and high for wool production*were increasec r* 93 - the ago of lambs progressed. This value for type of birth was decreased following the 120 days of lamb age. The average body weights of ewes were found as lowest at 1 l/2 year old highest at k l/s year old. The greasy wool production weights were found highest i at 75 l/2 year^f ewes, this value decreased as the age progressed. The use as correction factors of the least squares constants obtained for different characteristics have been discussed. The respective heritability values estimated with paternal half-sib correlation metod, were found 0,l6, 0.08, 0.18 and 0.17 for birth, 60 day, 120 day and 180 day weights, 0,24-0^58 and 0”15-0.28 for greasy wool production and shear ing weights of lambs and yearling females. The phenotypic correlation between production traits, studied, were found i from 0.20 to 0,97. The highly positive genetic correlations, ranging from O.73 to 0.95, were found between lamb birth weight and weights of 60, 120 and 180 days of age. The cor- relations between the weightaj *fc 1 6 0-1 80 days of age were from 0*68 to 0.77. The correlation between lamb -weight and live weights after shearing were ranged from 0.71 to 0.91, This correlati on values for greasy wool production were ranged from 0.64 to O.89. In addition to above, the positive genetic correla tion between live weight of yearling female and wool produc- 4, tion was 0.51 level. According the above genetic findings, it I ?. - sgpears - ^ ' | that there is no antagonism to genetic improvements! throaglT I selection. In addition to this 1- 9^ - selection for any of the traits studied is likely to result in some ge netic increases on characters mentioned. In this study, considering the phenotypic and genetic parameters obtained for different production characteristics of Karacabey Merino, it is concluded that, the improvement through selection is likely to be small for lamb weightb and high for wool production*
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