Matches in SemOpenAlex for { <https://semopenalex.org/work/W2587403582> ?p ?o ?g. }
Showing items 1 to 76 of
76
with 100 items per page.
- W2587403582 abstract "The objective was to estimate genetic parameters and fit lactation curves for cows treated or not treated with bovine somatotropin (bST) and fit specific lactation curves for each animal for both random genetic and permanent environmental components from individual test-day milk, fat, and protein yields with a cubic spline model. A total of 70,752 test-day observations for first lactation Holstein cows recorded as treated bST and 73,387 test-day observations for untreated cows that calved between 1994 and early 1999 were obtained from Dairy Records Management Systems in Raleigh, North Carolina. The model included herd test-day, age at first calving, bST treatment, and days in lactation when test-day yield was recorded as fixed effects. Cubic splines were fitted for the overall lactation curve, additive genetic effects, and permanent environmental effects. The cubic splines used five predetermined intervals between days 0, 50, 135,220, and 305. Estimates of the (co)variances for the random components of cubic spline model with five knots were obtained with REML. Estimates of genetic parameters were calculated for the average test day model within each of the ten 30-d test day intervals. The estimates of heritability for milk, fat, and protein yields ranged from 0.09 to 0.15, 0.06 to 0.10, and 0.08 to 0.15 for test-day one to test-day ten. Estimates of genetic correlations between testdays ranged from 0.99 to 0.34 for milk yield, 0.99 to 0.49 for fat yield, and 0.99 to 0.36 for protein yield. Estimates of phenotypic correlations between test-days ranged from 0.67 to 0.27 for milk yield, 0.52 to 0.16 for fat yield, and 0.60 to 0.19 for protein yield. Differences between bST treated and untreated cows of 2 to 4 kg and 0.10 to 0.16 kg for milk and fat yields (smaller for protein yield) at day 90 were maintained until about day 305 of lactation." @default.
- W2587403582 created "2017-02-17" @default.
- W2587403582 creator A5037041466 @default.
- W2587403582 creator A5046052571 @default.
- W2587403582 creator A5048399316 @default.
- W2587403582 creator A5061641302 @default.
- W2587403582 date "2003-04-27" @default.
- W2587403582 modified "2023-10-17" @default.
- W2587403582 title "CUBIC SPLINES FOR ESTIMATING LACTATION CURVES AND GENETIC PARAMETERS OF FIRST LACTATION HOLSTEIN COWS TREATED WITH BOVINE SOMATOTROPIN" @default.
- W2587403582 doi "https://doi.org/10.4148/2475-7772.1181" @default.
- W2587403582 hasPublicationYear "2003" @default.
- W2587403582 type Work @default.
- W2587403582 sameAs 2587403582 @default.
- W2587403582 citedByCount "3" @default.
- W2587403582 countsByYear W25874035822022 @default.
- W2587403582 crossrefType "journal-article" @default.
- W2587403582 hasAuthorship W2587403582A5037041466 @default.
- W2587403582 hasAuthorship W2587403582A5046052571 @default.
- W2587403582 hasAuthorship W2587403582A5048399316 @default.
- W2587403582 hasAuthorship W2587403582A5061641302 @default.
- W2587403582 hasBestOaLocation W25874035821 @default.
- W2587403582 hasConcept C104317684 @default.
- W2587403582 hasConcept C105795698 @default.
- W2587403582 hasConcept C134018914 @default.
- W2587403582 hasConcept C140793950 @default.
- W2587403582 hasConcept C161890455 @default.
- W2587403582 hasConcept C177752829 @default.
- W2587403582 hasConcept C194775826 @default.
- W2587403582 hasConcept C22641795 @default.
- W2587403582 hasConcept C2776659692 @default.
- W2587403582 hasConcept C2779234561 @default.
- W2587403582 hasConcept C2984496839 @default.
- W2587403582 hasConcept C33923547 @default.
- W2587403582 hasConcept C49781872 @default.
- W2587403582 hasConcept C54355233 @default.
- W2587403582 hasConcept C61420037 @default.
- W2587403582 hasConcept C68873052 @default.
- W2587403582 hasConcept C70616004 @default.
- W2587403582 hasConcept C71315377 @default.
- W2587403582 hasConcept C86803240 @default.
- W2587403582 hasConceptScore W2587403582C104317684 @default.
- W2587403582 hasConceptScore W2587403582C105795698 @default.
- W2587403582 hasConceptScore W2587403582C134018914 @default.
- W2587403582 hasConceptScore W2587403582C140793950 @default.
- W2587403582 hasConceptScore W2587403582C161890455 @default.
- W2587403582 hasConceptScore W2587403582C177752829 @default.
- W2587403582 hasConceptScore W2587403582C194775826 @default.
- W2587403582 hasConceptScore W2587403582C22641795 @default.
- W2587403582 hasConceptScore W2587403582C2776659692 @default.
- W2587403582 hasConceptScore W2587403582C2779234561 @default.
- W2587403582 hasConceptScore W2587403582C2984496839 @default.
- W2587403582 hasConceptScore W2587403582C33923547 @default.
- W2587403582 hasConceptScore W2587403582C49781872 @default.
- W2587403582 hasConceptScore W2587403582C54355233 @default.
- W2587403582 hasConceptScore W2587403582C61420037 @default.
- W2587403582 hasConceptScore W2587403582C68873052 @default.
- W2587403582 hasConceptScore W2587403582C70616004 @default.
- W2587403582 hasConceptScore W2587403582C71315377 @default.
- W2587403582 hasConceptScore W2587403582C86803240 @default.
- W2587403582 hasLocation W25874035821 @default.
- W2587403582 hasOpenAccess W2587403582 @default.
- W2587403582 hasPrimaryLocation W25874035821 @default.
- W2587403582 hasRelatedWork W2092376026 @default.
- W2587403582 hasRelatedWork W2104614734 @default.
- W2587403582 hasRelatedWork W2160359176 @default.
- W2587403582 hasRelatedWork W2186355066 @default.
- W2587403582 hasRelatedWork W2189626718 @default.
- W2587403582 hasRelatedWork W2587403582 @default.
- W2587403582 hasRelatedWork W3013883585 @default.
- W2587403582 hasRelatedWork W3167792551 @default.
- W2587403582 hasRelatedWork W4210656639 @default.
- W2587403582 hasRelatedWork W896226270 @default.
- W2587403582 isParatext "false" @default.
- W2587403582 isRetracted "false" @default.
- W2587403582 magId "2587403582" @default.
- W2587403582 workType "article" @default.