Correlation of litter size traits
نویسندگان
چکیده
منابع مشابه
Genetic Correlation between Growth Rate and Litter Size in Mice.
UANTITATIVE geneticists have long been aware that correlated responses Q are common in populations under different types of selection. The primary implication of a correlated response is that the character under selection is genetically correlated with another character, though other parameters affect the magnitude of the correlated response. In the course of selection for a single trait, other...
متن کاملMultivariate analysis of litter size for multiple parities with production traits in pigs: II. Response to selection for litter size and correlated response to production traits.
Litter size and production trait responses to experimental selection for increased litter size in a Landrace pig population are reported. The numbers of sows and litters available for the first cycle of selection were 3,034 and 961, respectively. Selection was carried out using a BLUP repeatability animal model for number of piglets born alive (NBA). The experiment included one selection and on...
متن کاملResponses in ovulation rate, embryonal survival, and litter traits in swine to 14 generations of selection to increase litter size.
Eleven generations of selection for increased index of ovulation rate and embryonal survival rate, followed by three generations of selection for litter size, were practiced. Laparotomy was used to count corpora lutea and fetuses at 50 d of gestation. High-indexing gilts, approximately 30%, were farrowed. Sons of dams in the upper 10% of the distribution were selected. Selection from Generation...
متن کاملAssociation of non-synonymous SNPs of OPN gene with litter size traits in pigs
Osteopontin (OPN) gene is a secreted phosphoprotein which appears to play a key function in the conceptus implantation, placentation and maintenance of pregnancy in pigs. The objectives of this study were to verify the non-synonymous single nucleotide polymorphisms (SNPs) and their association with litter size traits in commercial Thai Large White pigs. A total of 320 Thai Large White sows were...
متن کاملEffect of service sire on litter size traits in Czech Large White and Landrace pigs
The proportion of variance for service sire effect was estimated for three litter size traits (numbers of piglets born, born alive, and weaned) in Czech Large White (89 231 litters) and Czech Landrace (28 320 litters) pigs. Each trait in the first parity was considered as one trait and that trait in the second and subsequent parities was treated as a repeated trait. Consequently, three two-trai...
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ژورنال
عنوان ژورنال: Biotechnology in Animal Husbandry
سال: 2016
ISSN: 1450-9156,2217-7140
DOI: 10.2298/bah1604331r