Relationship of Somatic Cell Score with Fertility Measures
نویسندگان
چکیده
منابع مشابه
Association of Somatic Cell Score with Production Traits in Iranian Holstein Cows
The objective of this study was to analyze the association of somatic cell score (SCS) with milk, fat and protein yields across parities. Records of production traits and somatic cell counts (SCC) from first, second and third parity that were collected by the Animal Breeding Center of Iran from 1993 to 2010 were used.All animals were grouped into six classes according to SCC and production trai...
متن کاملRelationship of test-day somatic cell score with test-day and lactation milk yields.
To determine the relationship of test-day (TD) somatic cell score (SCS) to TD and lactation milk yields, 1,320,590 records from Holstein first and second calvings from 1995 through 2002 were examined. All lactations had recorded yield and SCS for at least the first 4 TD. Least square analyses were conducted for yields on TD 2 through 10 within herd and cow. The model included regressions on cur...
متن کاملGenetic correlation of average somatic cell score at different stages of lactation with milk yield and composition in Holstein cows
Genetic and non-genetic correlations of the average somatic cell score (SCS) at different stages oflactation (100, 150, 200, 305 and 365 days in milk) with lactation performance were estimated based on thefirst lactation records of Iranian Holstein calving during 2000 to 2009. (Co) variance components wereestimated using derivative-free REML based on multiple traits animal models. The estimated...
متن کاملGenetic correlations among body condition score, somatic cell score, milk production, fertility and conformation traits in dairy cows
Genetic and phenotypic parameters for body condition score (BCS), days to first service (DFS), non-return rate (NRR), somatic cell score (SCS), and 305-day milk, fat and protein yields were estimated, using 38930 multiple lactation records of cows across 1830 herds. The cows were daughters of 243 different sires. Singleand multi-trait repeatability animal models were used to estimate parameters...
متن کاملRelationship of Somatic Cell Score and Linear Type Trait Evaluations of Holstein Sires
Genetic evaluations of Holstein bulls for mean somatic cell score were compared with their standardized transmitting abilities for linear type traits. Based on first lactation daughter information from five dairy records processing centers, PTA for somatic cell scores for 712 sires ranged from -.50 to .56. Standardized transmitting abilities for 14 type traits were provided for these bulls by t...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 2001
ISSN: 0022-0302
DOI: 10.3168/jds.s0022-0302(01)74706-6