We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Milk production in sheep – genetic basis and phenotype characteristics.
- Authors
Stoykova-Grigorova, Radostina; Bozhilova-Sakova, Milena; Ivanova, Tanya; Ignatova, Maya; Dimitrova, Ivona
- Abstract
Milk is a product with highly dynamic characteristics. Its composition varies according to the breed, lactation period, nutrition, health status of the animal, as well as the conditions of milking and storage. Investigation of genetic potential and productive traits of farm animals is essential for every producer. The phenotypic characteristics of sheep are the result of the complex interaction of a wide range of genetic and non-genetic factors. They are slightly influenced by traditional selection. Therefore, it is essential to study the genetic pattern of inheritance of these traits. In the last decades of the 20th century, several researchers have studied genetic variation in populations of different breeds of farm animals, using genetic markers of class I, such as blood types and polymorphisms of proteins in blood and milk. Modern methods of molecular biology make it possible to use class II genetic markers in research to identify genetic polymorphisms in the loci of molecular markers and associate them to certain phenotype characteristics, study the laws of organization and functioning of the genome, decipher the mechanisms for the realization of genetic information. The obtained data from these analyzes are successfully applied in the development of breeding programs in animal husbandry practice, to speed up the realization of genetic progress. Some of the main major candidate genes that have been studied related to milk productivity in sheep are: prolactin, αs1, αs2, β and κ-casein, α- and β-lactoglobulin, PIT-1.
- Subjects
MILK yield; SHEEP milk; HEREDITY; ANIMAL breeding; SHEEP breeding; BLOOD groups; PHENOTYPES; CATTLE genetics
- Publication
Bulgarian Journal of Animal Husbandry / Životnov Dni Nauki, 2022, Vol 59, Issue 2, p23
- ISSN
0514-7441
- Publication type
Article