The effect of feed supplementation on the onset of puberty in Brazilian dairy heifers

Detalhes bibliográficos
Autor(a) principal: Meirelles,C.F.
Data de Publicação: 1994
Outros Autores: Abdalla,A.L., Vitti,D.M.S.S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Scientia Agrícola (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161994000200026
Resumo: Most Brazilian dairy production is conducted by small holders whose general management skills and feeding programs are often deficient. One common problem directly attributed to underfeeding is that heifers rarely reach sexual maturity before 15 months of age. Groups of growing heifers were treated to detect the effects of protein supplementation and antihelmintic treatment on sexual maturity. The first ovulation occurred at 513 ± 44 and 573 ± 36 days (P<.01) in supplemented and control groups, respectively. Liveweight gains from start of the trial to the first ovulation were 378 ±.02 and 331 ±.04 g for suplemented (S) and control (C) groups. Only 52.17 % of heifers in C group (11 of 23) but 95.65 % in S group (22 of 23) reached sexual maturity before the age of 18 mo (P< .01). Animals with anthelmintic treatment had better growth performance than the controls.
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spelling The effect of feed supplementation on the onset of puberty in Brazilian dairy heifersheiferspubertyprotein supplementationantihelminticMost Brazilian dairy production is conducted by small holders whose general management skills and feeding programs are often deficient. One common problem directly attributed to underfeeding is that heifers rarely reach sexual maturity before 15 months of age. Groups of growing heifers were treated to detect the effects of protein supplementation and antihelmintic treatment on sexual maturity. The first ovulation occurred at 513 ± 44 and 573 ± 36 days (P<.01) in supplemented and control groups, respectively. Liveweight gains from start of the trial to the first ovulation were 378 ±.02 and 331 ±.04 g for suplemented (S) and control (C) groups. Only 52.17 % of heifers in C group (11 of 23) but 95.65 % in S group (22 of 23) reached sexual maturity before the age of 18 mo (P< .01). Animals with anthelmintic treatment had better growth performance than the controls.Escola Superior de Agricultura "Luiz de Queiroz"1994-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161994000200026Scientia Agricola v.51 n.2 1994reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/S0103-90161994000200026info:eu-repo/semantics/openAccessMeirelles,C.F.Abdalla,A.L.Vitti,D.M.S.S.eng2005-07-19T00:00:00Zoai:scielo:S0103-90161994000200026Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2005-07-19T00:00Scientia Agrícola (Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv The effect of feed supplementation on the onset of puberty in Brazilian dairy heifers
title The effect of feed supplementation on the onset of puberty in Brazilian dairy heifers
spellingShingle The effect of feed supplementation on the onset of puberty in Brazilian dairy heifers
Meirelles,C.F.
heifers
puberty
protein supplementation
antihelmintic
title_short The effect of feed supplementation on the onset of puberty in Brazilian dairy heifers
title_full The effect of feed supplementation on the onset of puberty in Brazilian dairy heifers
title_fullStr The effect of feed supplementation on the onset of puberty in Brazilian dairy heifers
title_full_unstemmed The effect of feed supplementation on the onset of puberty in Brazilian dairy heifers
title_sort The effect of feed supplementation on the onset of puberty in Brazilian dairy heifers
author Meirelles,C.F.
author_facet Meirelles,C.F.
Abdalla,A.L.
Vitti,D.M.S.S.
author_role author
author2 Abdalla,A.L.
Vitti,D.M.S.S.
author2_role author
author
dc.contributor.author.fl_str_mv Meirelles,C.F.
Abdalla,A.L.
Vitti,D.M.S.S.
dc.subject.por.fl_str_mv heifers
puberty
protein supplementation
antihelmintic
topic heifers
puberty
protein supplementation
antihelmintic
description Most Brazilian dairy production is conducted by small holders whose general management skills and feeding programs are often deficient. One common problem directly attributed to underfeeding is that heifers rarely reach sexual maturity before 15 months of age. Groups of growing heifers were treated to detect the effects of protein supplementation and antihelmintic treatment on sexual maturity. The first ovulation occurred at 513 ± 44 and 573 ± 36 days (P<.01) in supplemented and control groups, respectively. Liveweight gains from start of the trial to the first ovulation were 378 ±.02 and 331 ±.04 g for suplemented (S) and control (C) groups. Only 52.17 % of heifers in C group (11 of 23) but 95.65 % in S group (22 of 23) reached sexual maturity before the age of 18 mo (P< .01). Animals with anthelmintic treatment had better growth performance than the controls.
publishDate 1994
dc.date.none.fl_str_mv 1994-08-01
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=S0103-90161994000200026
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161994000200026
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-90161994000200026
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 Escola Superior de Agricultura "Luiz de Queiroz"
publisher.none.fl_str_mv Escola Superior de Agricultura "Luiz de Queiroz"
dc.source.none.fl_str_mv Scientia Agricola v.51 n.2 1994
reponame:Scientia Agrícola (Online)
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Scientia Agrícola (Online)
collection Scientia Agrícola (Online)
repository.name.fl_str_mv Scientia Agrícola (Online) - Universidade de São Paulo (USP)
repository.mail.fl_str_mv scientia@usp.br||alleoni@usp.br
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