Lamb survival in Australian Merino Sheep: A genetic analysis12
نویسندگان
چکیده
منابع مشابه
Lamb survival in Australian Merino sheep: a genetic analysis.
Direct and maternal components of variance for lamb survival to birth, 7 d, and weaning (110 d) were estimated by REML procedures in a flock of Australian Merino sheep. A total of 14,142 lambs, the progeny of 421 sires and 3,666 dams, born between 1975 and 1983 were available for analysis. The study has produced some of the most precise estimates of genetic parameters for lamb survival in the A...
متن کاملPhenotypic aspects of lamb survival in Australian Merino sheep.
Lamb survival in Australian Merino sheep was investigated using survival records from 14,142 lambs born between 1975 and 1983. This data set included roll calls of live lambs at birth, 7 d, marking (30 d), and weaning (110 d), which allowed 4 binomial traits (alive or dead) to be recorded for each lamb at each time interval. The average survival to weaning was 72.4% with 23% of singles, 32% of ...
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The neuronal ceroid lipofuscinoses (NCLs) are a group of inherited neurodegenerative diseases characterised by the accumulation of autofluorescent lipopigment in a variety of tissues. At least six different forms of NCL occur in humans and the disease has been identified in various animal species, including sheep. Clinical features of NCL are dementia, loss of vision, motor disturbances, and pr...
متن کاملA genome-wide scan to detect signatures of recent selection in Australian Merino sheep
Domestication and selection are processes that conserve the pattern of genetic diversities between and within populations. Identification of genomic regions that are targets of selection for phenotypic traits is one of the main aims of research in animal genetics. An approach for identifying divergently selected regions of the genome is to compare FST values among loci to estimate the genetic v...
متن کاملGenetic Parameters in Merino Sheep GENETIC RELATIONSHIPS BETWEEN CARCASS QUALITY AND WOOL PRODUCTION TRAITS IN AUSTRALIAN MERINO RAMS
The heritability of carcass quality traits and the genetic correlations between wool production and these carcass quality traits were estimated on 1216 Merino rams. The results showed that carcass quality traits are moderately heritable but pH appears to be lowly heritable. Yellowness and redness of L. dorsi had very low heritability estimate. Moderate negative genetic relationships were found ...
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ژورنال
عنوان ژورنال: Journal of Animal Science
سال: 2010
ISSN: 0021-8812,1525-3163
DOI: 10.2527/jas.2009-2461