Estimates of correction factors for lactation length and genetic parameters for milk yield in buffaloes
Autor(a) principal: | |
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Data de Publicação: | 2004 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Arquivo brasileiro de medicina veterinária e zootecnia (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352004000200016 |
Resumo: | Correction factors for milk yield at 90, 240, 270 and 305 days of lactation of buffaloes and genetic and environmental parameters for milk yield of these lactation periods were estimated. The data used consisted of 3888 lactation records of 1630 buffaloes from 10 herds reared in the State of São Paulo. Genetic parameters were estimated by the derivative free restricted maximum likelihood method, fitting an animal repeatability model. Heritability estimates for milk yield corrected for 90, 240, 270 and 305 days of lactation were 0.17, 0.15, 0.14 and 0.14, respectively. In this same order, repeatability estimates were 0.40, 0.44, 0.41 and 0.41. The genetic correlation estimates between these corrected milk yields ranged from 0.96 to 1.00. The multiplicative correction factors for the different classes of lactation lengths were efficient for adjustment of milk yield at 90, 240, 270 and 305 days of lactation. |
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Arquivo brasileiro de medicina veterinária e zootecnia (Online) |
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Estimates of correction factors for lactation length and genetic parameters for milk yield in buffaloesbuffalolactation lengthmilk yieldCorrection factors for milk yield at 90, 240, 270 and 305 days of lactation of buffaloes and genetic and environmental parameters for milk yield of these lactation periods were estimated. The data used consisted of 3888 lactation records of 1630 buffaloes from 10 herds reared in the State of São Paulo. Genetic parameters were estimated by the derivative free restricted maximum likelihood method, fitting an animal repeatability model. Heritability estimates for milk yield corrected for 90, 240, 270 and 305 days of lactation were 0.17, 0.15, 0.14 and 0.14, respectively. In this same order, repeatability estimates were 0.40, 0.44, 0.41 and 0.41. The genetic correlation estimates between these corrected milk yields ranged from 0.96 to 1.00. The multiplicative correction factors for the different classes of lactation lengths were efficient for adjustment of milk yield at 90, 240, 270 and 305 days of lactation.Universidade Federal de Minas Gerais, Escola de Veterinária2004-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352004000200016Arquivo Brasileiro de Medicina Veterinária e Zootecnia v.56 n.2 2004reponame:Arquivo brasileiro de medicina veterinária e zootecnia (Online)instname:Universidade Federal de Minas Gerais (UFMG)instacron:UFMG10.1590/S0102-09352004000200016info:eu-repo/semantics/openAccessTonhati,H.Muñoz,M.F.C.Duarte,J.M.C.Reichert,R.H.Oliveira,J.A.Lima,A.L.F.eng2004-06-17T00:00:00Zoai:scielo:S0102-09352004000200016Revistahttps://www.scielo.br/j/abmvz/PUBhttps://old.scielo.br/oai/scielo-oai.phpjournal@vet.ufmg.br||abmvz.artigo@abmvz.org.br1678-41620102-0935opendoar:2004-06-17T00:00Arquivo brasileiro de medicina veterinária e zootecnia (Online) - Universidade Federal de Minas Gerais (UFMG)false |
dc.title.none.fl_str_mv |
Estimates of correction factors for lactation length and genetic parameters for milk yield in buffaloes |
title |
Estimates of correction factors for lactation length and genetic parameters for milk yield in buffaloes |
spellingShingle |
Estimates of correction factors for lactation length and genetic parameters for milk yield in buffaloes Tonhati,H. buffalo lactation length milk yield |
title_short |
Estimates of correction factors for lactation length and genetic parameters for milk yield in buffaloes |
title_full |
Estimates of correction factors for lactation length and genetic parameters for milk yield in buffaloes |
title_fullStr |
Estimates of correction factors for lactation length and genetic parameters for milk yield in buffaloes |
title_full_unstemmed |
Estimates of correction factors for lactation length and genetic parameters for milk yield in buffaloes |
title_sort |
Estimates of correction factors for lactation length and genetic parameters for milk yield in buffaloes |
author |
Tonhati,H. |
author_facet |
Tonhati,H. Muñoz,M.F.C. Duarte,J.M.C. Reichert,R.H. Oliveira,J.A. Lima,A.L.F. |
author_role |
author |
author2 |
Muñoz,M.F.C. Duarte,J.M.C. Reichert,R.H. Oliveira,J.A. Lima,A.L.F. |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Tonhati,H. Muñoz,M.F.C. Duarte,J.M.C. Reichert,R.H. Oliveira,J.A. Lima,A.L.F. |
dc.subject.por.fl_str_mv |
buffalo lactation length milk yield |
topic |
buffalo lactation length milk yield |
description |
Correction factors for milk yield at 90, 240, 270 and 305 days of lactation of buffaloes and genetic and environmental parameters for milk yield of these lactation periods were estimated. The data used consisted of 3888 lactation records of 1630 buffaloes from 10 herds reared in the State of São Paulo. Genetic parameters were estimated by the derivative free restricted maximum likelihood method, fitting an animal repeatability model. Heritability estimates for milk yield corrected for 90, 240, 270 and 305 days of lactation were 0.17, 0.15, 0.14 and 0.14, respectively. In this same order, repeatability estimates were 0.40, 0.44, 0.41 and 0.41. The genetic correlation estimates between these corrected milk yields ranged from 0.96 to 1.00. The multiplicative correction factors for the different classes of lactation lengths were efficient for adjustment of milk yield at 90, 240, 270 and 305 days of lactation. |
publishDate |
2004 |
dc.date.none.fl_str_mv |
2004-04-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352004000200016 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352004000200016 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0102-09352004000200016 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Universidade Federal de Minas Gerais, Escola de Veterinária |
publisher.none.fl_str_mv |
Universidade Federal de Minas Gerais, Escola de Veterinária |
dc.source.none.fl_str_mv |
Arquivo Brasileiro de Medicina Veterinária e Zootecnia v.56 n.2 2004 reponame:Arquivo brasileiro de medicina veterinária e zootecnia (Online) instname:Universidade Federal de Minas Gerais (UFMG) instacron:UFMG |
instname_str |
Universidade Federal de Minas Gerais (UFMG) |
instacron_str |
UFMG |
institution |
UFMG |
reponame_str |
Arquivo brasileiro de medicina veterinária e zootecnia (Online) |
collection |
Arquivo brasileiro de medicina veterinária e zootecnia (Online) |
repository.name.fl_str_mv |
Arquivo brasileiro de medicina veterinária e zootecnia (Online) - Universidade Federal de Minas Gerais (UFMG) |
repository.mail.fl_str_mv |
journal@vet.ufmg.br||abmvz.artigo@abmvz.org.br |
_version_ |
1750220878388396032 |