Marker-assisted breeding value estimation for mastitis resistance in Finnish Ayrshire cattle
نویسندگان
چکیده
منابع مشابه
Breeding Cattle for Mastitis Resistance
The development of an immunological assay where cells isolated from blood are stimulated by an Staphylococcus aureus antigen in vitro is described. Variation was observed in the ability of cells isolated from young cattle, cows and bulls to respond in vitro to S. aureus, suggesting that differences in immune responsiveness may be measured by this method. Bull progeny groups were shown to have c...
متن کاملQuantitative trait Loci for health traits in Finnish Ayrshire cattle.
A whole-genome scan was conducted to search for quantitative trait loci (QTL) affecting health traits in Finnish Ayrshire dairy cattle. The mapping population consisted of 12 bulls and their 491 sons in a granddaughter design. A total of 150 markers were typed covering all 29 autosomes. The traits under study were somatic cell score, mastitis, and a group of other veterinary treatments. Effects...
متن کاملEstimation of genetic parameters for production and reproduction in Finnish Ayrshire cattle.
Records of AI-sired cows born between 1978 and 1982 were used to form two composite production and reproduction data sets. First (second) consisted of 35,568 (26,443) first lactations of daughters of 270 (237) sires. Traits were FCM, heifer, and first parity nonreturn rates, days between calving and first insemination, and days open, with means 5075 (5280) kg, .62 (.62), .44 (.49), 81 (81) d an...
متن کاملParallel computing applied to breeding value estimation in dairy cattle.
Continuous genetic evaluation of dairy cattle with test-day models is desired in Finland. However, the computing time for the genetic evaluation is 4 d and exceeds the minimum of a weekend. Three parallel implementations of the preconditioned conjugate gradient iterative solver were programmed and compared to identify the best strategy for solving mixed model equations using parallel computing....
متن کاملGenetic Basis of Mastitis Resistance in Cattle
Mastitis is one of the most important diseases affecting production in dairy cattle. Control strategies against mastitis such as antibiotic therapy, vaccination, improvement of farm and feeding management have met with little success. Genetic variability of mastitis resistance is well established by several independent studies in different breeds of dairy cattle. Usage of somatic cell count or ...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 2011
ISSN: 0022-0302
DOI: 10.3168/jds.2010-4112