The Evaluation of Environmental Effects to Establish Genetic ParameterCalculation in the Sheep Breeds
Başlık çevirisi mevcut değil.
- Tez No: 718116
- Danışmanlar: DR. KOMLóSİ ISTVáN
- Tez Türü: Yüksek Lisans
- Konular: Biyomühendislik, Biyoteknoloji, Bioengineering, Biotechnology
- Anahtar Kelimeler: Belirtilmemiş.
- Yıl: 2019
- Dil: İngilizce
- Üniversite: Debreceni Egyetem
- Enstitü: Yurtdışı Enstitü
- Ana Bilim Dalı: Belirtilmemiş.
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: Belirtilmemiş.
Özet
Genetic parameter evaluations and estimates are needed for implementation of breeding programmers and assessment of progress of present programmers. From the results above, for German Mutton Merino, the farm, year, season, sex, age of dam and litter size have got significant effect on weaning weight and growth rate. Also, all traits have got significant effect on yearling weight except age of dam. For Hungarian Merino, the farm, year, sex and litter size have got significant effect on the weaning weight while the season and age of dam have not significant effect on the weaning weight. Also, all traits have got significant effect on the growth rate. In addition, all traits have got significant effect on the yearling weight except for the age of dam. For Lacaune, the farm, season, sex and litter size have got significant effect on the weaning weight while the year and age of dam have not significant effect on the weaning weight. Also, almost all traits have not got significant effect on the growth rate except the farm and sex. In addition, all traits have got significant effect on the yearling weight except the age of dam and litter size. Also, the farm, lambing year, lambing season, age, litter size at birth and litter size at weaning has got significant effect on milking days and milk production except litter size at weaning because it just has got significant effect on milking days. For Suffolk, the farm, year, season, sex and litter size have got significant effect on the weaning weight while the age of dam has not significant effect on the weaning weight. Also, the farm, year, season and sex have got significant effect on the growth rate while the age of dam and litter size have not got significant effect on the growth rate. In addition, the farm, year and sex have got significant effect on yearling weight while the season, age of dam and litter size have not significant effect on yearling weight.
Özet (Çeviri)
This study was conducted in Hungary to understand the effects of environmental factors on the growth characteristics of sheep breeds in German Mutton Merino, Hungarian Merino, Lacaune and Suffolk sheep breeds. In this study, recorded data of 31917 German Mutton Merino sheep, recorded data of 18743 Hungarian Merino sheep, recorded data of 2079 Lacaune sheep, recorded data of 11634 Suffolk sheep and recorded data of 30776 Lacaune sheep were used. In this study, the effects of farm, year, season, sex, age of dam, and litter size traits on weaning weight, growth rate, yearling weight were investigated in German Mutton Merino, Hungarian Merino, Lacaune and Suffolk sheep breeds. In this study, the effect of farm, lambing year, lambing season, age, litter size at birth and litter size at weaning properties on milking days and milk production were investigated in Lacaune milk sheep. R software program was used for analysis of variance. When we examined the effect of farm, year, season, sex, age of dam, and litter size on weaning weight, growth rate, yearling weight, different results were obtained for 4 sheep breeds excluding year and sex. The effect of all properties on weaning weight is found important for the German Mutton Merino while, all the traits are important except for the season and age of dam for the Hungarian Merino, all the traits are important except for the year and age of dam for Lacaune, all the traits except the important age of dam for Suffolk. When we look at the effect of the above-mentioned features on the growth rate, the effect of all the traits was found to be important for German Mutton Merino and Hungarian Merino. However, the effect of most of these properties on growth rate was insignificant in Lacaune sheep and only the effect of farm and sex was significant. When we look at the Suffolk breeds, the effect of all properties on the growth rate was found to be significant except age of dam and litter size. When the effect of these factors on another growth feature of yearling weight was examined, the effect of age on the yearling weight was found to be insignificant for these 4 sheep breeds, while the effect of farm, year and sex on yearling weight was found to be significant in these 4 sheep breeds. When the effect of the season on yearling weight was examined, it was significant for German Mutton Merino and Lacaune, while it was insignificant for Hungarian Merino and Suffolk. When we look at the effect of Litter size on Yearling weight, only it was found important in the German Mutton Merino and it was insignificant for other races. Also, when the effects of the factors mentioned above, farm, lambing year, lambing season, age, litter size at birth and litter size at weaning on milking days and milk production were examined, the effect of all traits on milking days and milk production was found to be significant. However, the effect on litter size at weaning on the milk production was insignificant.
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