Regression of traits-other-than-production phenotypes for cows milked once a day on estimated breeding values obtained from cows milked twice a day

The use of traits other than production (TOP) to aid selection for conformation fit-for-purpose offspring becomes more important as once-a-day (OAD) milking for whole or part season becomes more common. In 2013 Massey University Dairy 1 farm transitioned their mixed-breed herd milked twice a day (TA...

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Autores principales:	Sneddon, NW, Lopez Villalobos, N, Garrick, DJ, Rocha, JF, Donaghy, DJ
Formato:	article
Lenguaje:	Inglés
Publicado:	New Zealand Journal of Animal Science and Production 2024
Materias:	Genética y mejoramiento animal - L10 Ganado bovino Fenotipo Valor genético Ordeño Ganadería y especies menores http://aims.fao.org/aos/agrovoc/c_1391 http://aims.fao.org/aos/agrovoc/c_5776 http://aims.fao.org/aos/agrovoc/c_16117 http://aims.fao.org/aos/agrovoc/c_4835
Acceso en línea:	http://www.nzsap.org/proceedings/regression-traits-other-production-phenotypes-cows-milked-once-day-estimated-breeding http://hdl.handle.net/20.500.12324/40228

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institution	Corporación Colombiana de Investigación Agropecuaria
collection	Repositorio AGROSAVIA
language	Inglés
topic	Genética y mejoramiento animal - L10 Ganado bovino Fenotipo Valor genético Ordeño Ganadería y especies menores http://aims.fao.org/aos/agrovoc/c_1391 http://aims.fao.org/aos/agrovoc/c_5776 http://aims.fao.org/aos/agrovoc/c_16117 http://aims.fao.org/aos/agrovoc/c_4835
spellingShingle	Genética y mejoramiento animal - L10 Ganado bovino Fenotipo Valor genético Ordeño Ganadería y especies menores http://aims.fao.org/aos/agrovoc/c_1391 http://aims.fao.org/aos/agrovoc/c_5776 http://aims.fao.org/aos/agrovoc/c_16117 http://aims.fao.org/aos/agrovoc/c_4835 Sneddon, NW Lopez Villalobos, N Garrick, DJ Rocha, JF Donaghy, DJ Regression of traits-other-than-production phenotypes for cows milked once a day on estimated breeding values obtained from cows milked twice a day
description	The use of traits other than production (TOP) to aid selection for conformation fit-for-purpose offspring becomes more important as once-a-day (OAD) milking for whole or part season becomes more common. In 2013 Massey University Dairy 1 farm transitioned their mixed-breed herd milked twice a day (TAD) to an OAD spring-calving system. All cows on the farm were scored for 14 inspector TOP traits and four farmer-scored traits for a total of 1,163 records over five seasons (168 to 254 cows per year). The scores were adjusted for age of the cow and season. The adjusted phenotypes for all cows for each trait were then regressed on their corresponding nationally-produced TAD estimated breeding values (EBV), which had been calculated without using these phenotypes. The four farmer-scored traits had the lowest relationships with EBV. Estimates of regression coefficients near one were observed for the udder traits (udder support, rear udder, front teats, udder overall), dairy conformation and body capacity. This supports the use of national EBVs in OAD herds derived mostly from records on daughters in TAD herds.
format	article
author	Sneddon, NW Lopez Villalobos, N Garrick, DJ Rocha, JF Donaghy, DJ
author_facet	Sneddon, NW Lopez Villalobos, N Garrick, DJ Rocha, JF Donaghy, DJ
author_sort	Sneddon, NW
title	Regression of traits-other-than-production phenotypes for cows milked once a day on estimated breeding values obtained from cows milked twice a day
title_short	Regression of traits-other-than-production phenotypes for cows milked once a day on estimated breeding values obtained from cows milked twice a day
title_full	Regression of traits-other-than-production phenotypes for cows milked once a day on estimated breeding values obtained from cows milked twice a day
title_fullStr	Regression of traits-other-than-production phenotypes for cows milked once a day on estimated breeding values obtained from cows milked twice a day
title_full_unstemmed	Regression of traits-other-than-production phenotypes for cows milked once a day on estimated breeding values obtained from cows milked twice a day
title_sort	regression of traits-other-than-production phenotypes for cows milked once a day on estimated breeding values obtained from cows milked twice a day
publisher	New Zealand Journal of Animal Science and Production
publishDate	2024
url	http://www.nzsap.org/proceedings/regression-traits-other-production-phenotypes-cows-milked-once-day-estimated-breeding http://hdl.handle.net/20.500.12324/40228
work_keys_str_mv	AT sneddonnw regressionoftraitsotherthanproductionphenotypesforcowsmilkedonceadayonestimatedbreedingvaluesobtainedfromcowsmilkedtwiceaday AT lopezvillalobosn regressionoftraitsotherthanproductionphenotypesforcowsmilkedonceadayonestimatedbreedingvaluesobtainedfromcowsmilkedtwiceaday AT garrickdj regressionoftraitsotherthanproductionphenotypesforcowsmilkedonceadayonestimatedbreedingvaluesobtainedfromcowsmilkedtwiceaday AT rochajf regressionoftraitsotherthanproductionphenotypesforcowsmilkedonceadayonestimatedbreedingvaluesobtainedfromcowsmilkedtwiceaday AT donaghydj regressionoftraitsotherthanproductionphenotypesforcowsmilkedonceadayonestimatedbreedingvaluesobtainedfromcowsmilkedtwiceaday
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spelling	RepoAGROSAVIA402282024-10-17T03:01:25Z Regression of traits-other-than-production phenotypes for cows milked once a day on estimated breeding values obtained from cows milked twice a day Regression of traits-other-than-production phenotypes for cows milked once a day on estimated breeding values obtained from cows milked twice a day Sneddon, NW Lopez Villalobos, N Garrick, DJ Rocha, JF Donaghy, DJ Genética y mejoramiento animal - L10 Ganado bovino Fenotipo Valor genético Ordeño Ganadería y especies menores http://aims.fao.org/aos/agrovoc/c_1391 http://aims.fao.org/aos/agrovoc/c_5776 http://aims.fao.org/aos/agrovoc/c_16117 http://aims.fao.org/aos/agrovoc/c_4835 The use of traits other than production (TOP) to aid selection for conformation fit-for-purpose offspring becomes more important as once-a-day (OAD) milking for whole or part season becomes more common. In 2013 Massey University Dairy 1 farm transitioned their mixed-breed herd milked twice a day (TAD) to an OAD spring-calving system. All cows on the farm were scored for 14 inspector TOP traits and four farmer-scored traits for a total of 1,163 records over five seasons (168 to 254 cows per year). The scores were adjusted for age of the cow and season. The adjusted phenotypes for all cows for each trait were then regressed on their corresponding nationally-produced TAD estimated breeding values (EBV), which had been calculated without using these phenotypes. The four farmer-scored traits had the lowest relationships with EBV. Estimates of regression coefficients near one were observed for the udder traits (udder support, rear udder, front teats, udder overall), dairy conformation and body capacity. This supports the use of national EBVs in OAD herds derived mostly from records on daughters in TAD herds. Ganadería bovina 2024-10-16T19:29:26Z 2024-10-16T19:29:26Z 2019 2019 article Artículo científico http://purl.org/coar/resource_type/c_2df8fbb1 info:eu-repo/semantics/article https://purl.org/redcol/resource_type/ART http://purl.org/coar/version/c_970fb48d4fbd8a85 http://www.nzsap.org/proceedings/regression-traits-other-production-phenotypes-cows-milked-once-day-estimated-breeding 1176-5283 http://hdl.handle.net/20.500.12324/40228 reponame:Biblioteca Digital Agropecuaria de Colombia instname:Corporación colombiana de investigación agropecuaria AGROSAVIA eng New Zealand Journal of Animal Science and Production 79 1 140 143 Advisory Committee on Traits other than Production 2014. Evaluation system for traits other than production (TOP) for dairy cattle in New Zealand. https:// www.dairynz.co.nz/media/1205535/TOP_Booklet_ A4.pdf [Accessed 1/1/2019] Berry DP, Harris BL, Winkelman AM, Montgomerie WA. 2005. Phenotypic associations between traits other than production and longevity in New Zealand dairy cattle. Journal of Dairy Science. 88: 2962-2974. Cue RI, Harris BL, Rendel JM 1996. Genetic parameters for traits other than production in purebred and crossbred New Zealand dairy cattle. Livestock Production Science 45: 123-135. Davis SR. 2005. Lactational traits of importance in dairy cows and applications for emerging biotechnologies. New Zealand Veterinary Journal. 53: 400-405. DairyNZ, LIC. 2018. New Zealand dairy statistics 2017- 2018. Lembeye F, Lopez-Villalobos N, Burke JL, Davis SR 2015. Estimation of breed and heterosis effects for milk traits and somatic cell scores in cows milk once and twice daily in New Zealand. Proceedings of the New Zealand Society of Animal Production 75: 60-63. LIC 2019. Once-a-day selection index. https://www.lic. co.nz/products-and-services/artificial-breeding/ alpha/once-day-milking/ [accessed 2/2/2019] Rocha JF, Lopez-Villalobos N, Burke JL 2017a. Culling reasons in once-a-day milking cows and differences in production and type traits between retained and culled cows. Proceedings of the New Zealand Society of Animal Production 77: 200-204. Rocha JF, Lopez-Villalobos N, Burke JL, Sneddon NW, Donaghy DJ 2017b. Factors that influence the survival of cows milked once a day. New Zealand Journal of Agricultural Research. 61: 42-56. Attribution-NonCommercial-ShareAlike 4.0 International http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf application/pdf New Zealand Journal of Animal Science and Production New Zealand Journal of Animal Science and Production; Vol. 79, (2019): New Zealand Journal of Animal Science and Production ;p. 140 - 143.

Regression of traits-other-than-production phenotypes for cows milked once a day on estimated breeding values obtained from cows milked twice a day

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