Short communication: Differences in genetic merit for visually-assessed body condition score materialises as phenotypic differences in tactile-based body condition score in commercial dairy cows
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چکیده
منابع مشابه
Influence of Body Condition Score on Yield and Composition of Milk in Crossbred Dairy Cows
The study was carried out for a period of 150 days on 120 Holstein Friesian crossbred dairy cows between mid to late lactation to quantify the influence of body condition score (BCS) on yield and composition of milk. Total 12 dairy farms having same housing systems and holding at least 20 crossbred dairy cows per farm between mid to late lactation were selected for this study purposes. BCS of i...
متن کاملGenetic parameters for weight, weight adjusted for body condition score, height, and body condition score in beef cows.
Weight (CW, n = 61,798), weight adjusted for condition score (WA), hip height (CH, n = 56,494), and condition score (CS, n = 61,434) of cows (2 through 8 yr of age) produced by crosses of 22 sire breeds with Angus and Hereford dams in the first four cycles of the Germplasm Evaluation (GPE) Program at the U.S. Meat Animal Research Center were used to estimate genetic parameters with REML. The mo...
متن کاملAssociation between body condition score and live weight in pasture-based Holstein-Friesian dairy cows.
The objective was to quantify the strength of the relationship between body condition score (BCS) and live weight (LW) in pasture-based Holstein-Friesian dairy cattle, and to determine the kg LW per unit BCS. A total of 26021 test-day records with information on both BCS (1-10 scale, where 1 is emaciated and 10 is obese) and LW across 1110 lactations from one research farm were used in the anal...
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 کاملYoung Scientists 1 BREEDING FOR BODY CONDITION SCORE IN DAIRY COWS
Body condition score has been proposed as an additional trait in New Zealand’s national breeding objective. To be considered for inclusion, genetic parameters and an economic value are required. We propose genetic evaluation of body condition score using a random regression model that includes 2 order orthogonal Legendre polynomials fitted to the genetic variance and a link function to account ...
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ژورنال
عنوان ژورنال: Animal
سال: 2021
ISSN: 1751-7311
DOI: 10.1016/j.animal.2021.100181