Heterosis in the components of lactation curves of Girolando cows

Bibliographic Details
Main Author: Daltro, DS
Publication Date: 2019
Other Authors: Padilha, AH, Telo da Gama, L, Silva, MVGB, Panetto, JCDC, Machado, JD, Braccini Neto, J, Cobuci, JA
Format: Article
Language: eng
Source: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Download full: http://hdl.handle.net/10400.5/21567
Summary: Research Areas: AgricultureVeterinary Sciences
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spelling Heterosis in the components of lactation curves of Girolando cowsCross-breedingdairy cowsmathematical modelpersistency of lactationResearch Areas: AgricultureVeterinary SciencesABSTRACT - The objective of this study was to evaluate the effect of heterosis on the lactation curve components of Girolando cattle obtained by fitting different mathematical models. Data consisted of 258,891 test day milk yield records of the first lactation from 37,965 cows of Minas Gerais State (Brazil) between 1998 and 2014. Those cows were from the Holstein breed (H), Gyr breed (G) and six genetic cross-breedings of Holstein Gyr, (1/4H, 3/4G (1/4H); 3/8H, 5/8G (3/8H); 1/2H, 1/ 2G (1/2H), 5/8H, 3/8G (5/8H); 3/4H, 1/4G (3/4H); 7/8H, 1/8G (7/8H)), which is officially named as Girolando breed in Brazil. The Wood’s linear model (WDlin), Wood’s non-linear model (WDnlin), Wilmink’s model (WL) and Ali and Schaeffer’s model (ASH) were used for estimating the peak milk yield (PY), time to peak yield (PT), 305-day milk yield (TMY) and four different persistency measures (P, P2:1, P3:1 and P3:2). Regardless of the fitted model, the highest estimates of PY and TMY were for the H group. The heterosis effect was significant (p<.001) for TMY and all components of the lactation curve, except for P2:1. Girolando cattle presented a heterosis effect of 12.30% and 13.03% for PY and TMY, respectively. The magnitude of heterosis effect was larger for PT (24.18%), whereas the different persistency measures presented the smallest magnitude of heterosis values. The producers may use the different genetic groups to benefit from the heterosis mainly for the time to peak, peak yield and 305-day milk yield.TAYLOR & FRANCISRepositório da Universidade de LisboaDaltro, DSPadilha, AHTelo da Gama, LSilva, MVGBPanetto, JCDCMachado, JDBraccini Neto, JCobuci, JA2021-06-30T16:30:59Z2019-012019-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.5/21567engDaltro DS, Padilha AH, Telo da Gama L, Silva MVGB, Panetto JCC, Machado JD, Braccini Neto J, Cobuci JA 2019. Heterosis in the components of lactation curves of Girolando cows [article]. Italian Journal of Animal Science 18(1):267-278. DOI: 10.1080/1828051X.2018.15076271594-407710.1080/1828051X.2018.15076271828-051Xinfo:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2025-03-17T15:24:06Zoai:repositorio.ulisboa.pt:10400.5/21567Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-29T03:42:22.397725Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv Heterosis in the components of lactation curves of Girolando cows
title Heterosis in the components of lactation curves of Girolando cows
spellingShingle Heterosis in the components of lactation curves of Girolando cows
Daltro, DS
Cross-breeding
dairy cows
mathematical model
persistency of lactation
title_short Heterosis in the components of lactation curves of Girolando cows
title_full Heterosis in the components of lactation curves of Girolando cows
title_fullStr Heterosis in the components of lactation curves of Girolando cows
title_full_unstemmed Heterosis in the components of lactation curves of Girolando cows
title_sort Heterosis in the components of lactation curves of Girolando cows
author Daltro, DS
author_facet Daltro, DS
Padilha, AH
Telo da Gama, L
Silva, MVGB
Panetto, JCDC
Machado, JD
Braccini Neto, J
Cobuci, JA
author_role author
author2 Padilha, AH
Telo da Gama, L
Silva, MVGB
Panetto, JCDC
Machado, JD
Braccini Neto, J
Cobuci, JA
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Daltro, DS
Padilha, AH
Telo da Gama, L
Silva, MVGB
Panetto, JCDC
Machado, JD
Braccini Neto, J
Cobuci, JA
dc.subject.por.fl_str_mv Cross-breeding
dairy cows
mathematical model
persistency of lactation
topic Cross-breeding
dairy cows
mathematical model
persistency of lactation
description Research Areas: AgricultureVeterinary Sciences
publishDate 2019
dc.date.none.fl_str_mv 2019-01
2019-01-01T00:00:00Z
2021-06-30T16:30:59Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.5/21567
url http://hdl.handle.net/10400.5/21567
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Daltro DS, Padilha AH, Telo da Gama L, Silva MVGB, Panetto JCC, Machado JD, Braccini Neto J, Cobuci JA 2019. Heterosis in the components of lactation curves of Girolando cows [article]. Italian Journal of Animal Science 18(1):267-278. DOI: 10.1080/1828051X.2018.1507627
1594-4077
10.1080/1828051X.2018.1507627
1828-051X
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv TAYLOR & FRANCIS
publisher.none.fl_str_mv TAYLOR & FRANCIS
dc.source.none.fl_str_mv reponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron:RCAAP
instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron_str RCAAP
institution RCAAP
reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
repository.mail.fl_str_mv info@rcaap.pt
_version_ 1833601801925951488

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