GROWTH, INGESTIVE BEHAVIOR AND REPRODUCTIVE PERFORMANCE OF CROSSBRED HOLSTEIN X ZEBU HEIFERS IN GRAZING, SUBMITTED TO PROTEIN SUPPLEMENTATION DURING THE RAINY SEASON
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Ciência animal brasileira (Online) |
Texto Completo: | https://revistas.ufg.br/vet/article/view/14425 |
Resumo: | The objective of this study was to evaluate the effect of supplemental protein during the rainy season on body growth, ingestive behavior and reproductive performance of crossbred Gir x Holstein dairy heifers, with mean age of 21 ± 4.1 months and average initial body weight of 296.7 ± 57.3 kg, distributed in a completely randomized design with four treatments and six replicates per treatment. Heifers remained on Brachiaria brizantha cv. Marandu pasture, managed according to a rotational grazing system and, as treatment, it was supplemented with protein concentrate (34%, 43%, 56% and 66% BW) and level of supply of 0.30% body weight (BW). The animals were weighed and the mean weight of the lot was used for the calculation of adjustment of the amount of concentrate offered. Heifers that reached 330.0 kg of live weight were artificially inseminated and, 45 days after insemination, pregnancy diagnosis was performed for the calculation of pregnancy rate and age at conception. No significant difference of protein levels was observed on grazing, eating behavior, productive performance and age at conception of dairy heifers on pasture. The average daily weight gain of BW and age at conception were, on average, 0.907 kg / animal and 24.03 months, respectively.KEYWORDS: grazing; heifers rearing; pregnancy rate; supplementation; weight gain. |
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GROWTH, INGESTIVE BEHAVIOR AND REPRODUCTIVE PERFORMANCE OF CROSSBRED HOLSTEIN X ZEBU HEIFERS IN GRAZING, SUBMITTED TO PROTEIN SUPPLEMENTATION DURING THE RAINY SEASONCRESCIMENTO, COMPORTAMENTO INGESTIVO E DESEMPENHO REPRODUTIVO DE NOVILHAS MESTIÇAS HOLANDÊS X ZEBU, EM PASTEJO, SUBMETIDAS À SUPLEMENTAÇÃO PROTÉICA DURANTE A ÉPOCA DAS ÁGUASAnimal SupplementationDesempenhorecria novilhas leiteirassuplementação a pastoThe objective of this study was to evaluate the effect of supplemental protein during the rainy season on body growth, ingestive behavior and reproductive performance of crossbred Gir x Holstein dairy heifers, with mean age of 21 ± 4.1 months and average initial body weight of 296.7 ± 57.3 kg, distributed in a completely randomized design with four treatments and six replicates per treatment. Heifers remained on Brachiaria brizantha cv. Marandu pasture, managed according to a rotational grazing system and, as treatment, it was supplemented with protein concentrate (34%, 43%, 56% and 66% BW) and level of supply of 0.30% body weight (BW). The animals were weighed and the mean weight of the lot was used for the calculation of adjustment of the amount of concentrate offered. Heifers that reached 330.0 kg of live weight were artificially inseminated and, 45 days after insemination, pregnancy diagnosis was performed for the calculation of pregnancy rate and age at conception. No significant difference of protein levels was observed on grazing, eating behavior, productive performance and age at conception of dairy heifers on pasture. The average daily weight gain of BW and age at conception were, on average, 0.907 kg / animal and 24.03 months, respectively.KEYWORDS: grazing; heifers rearing; pregnancy rate; supplementation; weight gain.Objetivou-se avaliar o efeito da suplementação proteica, na época das águas, sobre o desenvolvimento corporal, o comportamento ingestivo e o desempenho reprodutivo de novilhas mestiças Gir x Holandês, com idade média de 21 ± 4,1 meses e peso corporal (PC) médio inicial de 296,7 ± 57,3 kg, distribuídas em delineamento inteiramente casualizado, com quatro tratamentos e seis repetições por tratamento. As novilhas permaneceram em pastagem de Brachiaria brizantha cv. Marandu, manejada em sistema de pastejo intermitente e, como tratamento, utilizou-se suplementação com concentrado proteico (34%, 43%, 56% e 66% de PB) e nível de fornecimento 0,30% do PC. Os animais foram pesados e o PC médio do lote usado para os cálculos de ajuste na quantidade de concentrado oferecido. As novilhas foram inseminadas aos 330,0 kg de PC e decorridos 45 dias da inseminação foi realizado o diagnóstico de gestação para o cálculo da taxa de gestação e idade à concepção. Não houve diferença dos níveis de PB sobre o comportamento de pastejo e na permanência no cocho, no desempenho reprodutivo e na idade à concepção de novilhas leiteiras em pastejo. O ganho médio diário de PC e a idade à concepção foram, em média, 0,907 kg/animal e 24,03 meses, respectivamente.PALAVRAS-CHAVE: ganho de peso; pastejo; recria de novilhas; suplementação; taxa de gestação.Universidade Federal de Goiás2012-09-28info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionResearchAvaliado por paresPesquisa Científicaapplication/pdftext/htmlhttps://revistas.ufg.br/vet/article/view/1442510.5216/cab.v13i3.14425Brazilian Animal Science/ Ciência Animal Brasileira; Vol. 13 No. 3 (2012); 298-305Ciência Animal Brasileira / Brazilian Animal Science; v. 13 n. 3 (2012); 298-3051809-68911518-2797reponame:Ciência animal brasileira (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGporhttps://revistas.ufg.br/vet/article/view/14425/11953https://revistas.ufg.br/vet/article/view/14425/11954Signoretti, Ricardo DiasQueiroz, Maria Fernanda S.Berchielli, Telma TeresinhaShmidek, AnitaOliveira, Elisa Marcela deDib, Vanessainfo:eu-repo/semantics/openAccess2012-09-29T02:15:59Zoai:ojs.revistas.ufg.br:article/14425Revistahttps://revistas.ufg.br/vetPUBhttps://revistas.ufg.br/vet/oai||revistacab@gmail.com1809-68911518-2797opendoar:2024-05-21T19:55:47.889131Ciência animal brasileira (Online) - Universidade Federal de Goiás (UFG)true |
dc.title.none.fl_str_mv |
GROWTH, INGESTIVE BEHAVIOR AND REPRODUCTIVE PERFORMANCE OF CROSSBRED HOLSTEIN X ZEBU HEIFERS IN GRAZING, SUBMITTED TO PROTEIN SUPPLEMENTATION DURING THE RAINY SEASON CRESCIMENTO, COMPORTAMENTO INGESTIVO E DESEMPENHO REPRODUTIVO DE NOVILHAS MESTIÇAS HOLANDÊS X ZEBU, EM PASTEJO, SUBMETIDAS À SUPLEMENTAÇÃO PROTÉICA DURANTE A ÉPOCA DAS ÁGUAS |
title |
GROWTH, INGESTIVE BEHAVIOR AND REPRODUCTIVE PERFORMANCE OF CROSSBRED HOLSTEIN X ZEBU HEIFERS IN GRAZING, SUBMITTED TO PROTEIN SUPPLEMENTATION DURING THE RAINY SEASON |
spellingShingle |
GROWTH, INGESTIVE BEHAVIOR AND REPRODUCTIVE PERFORMANCE OF CROSSBRED HOLSTEIN X ZEBU HEIFERS IN GRAZING, SUBMITTED TO PROTEIN SUPPLEMENTATION DURING THE RAINY SEASON Signoretti, Ricardo Dias Animal Supplementation Desempenho recria novilhas leiteiras suplementação a pasto |
title_short |
GROWTH, INGESTIVE BEHAVIOR AND REPRODUCTIVE PERFORMANCE OF CROSSBRED HOLSTEIN X ZEBU HEIFERS IN GRAZING, SUBMITTED TO PROTEIN SUPPLEMENTATION DURING THE RAINY SEASON |
title_full |
GROWTH, INGESTIVE BEHAVIOR AND REPRODUCTIVE PERFORMANCE OF CROSSBRED HOLSTEIN X ZEBU HEIFERS IN GRAZING, SUBMITTED TO PROTEIN SUPPLEMENTATION DURING THE RAINY SEASON |
title_fullStr |
GROWTH, INGESTIVE BEHAVIOR AND REPRODUCTIVE PERFORMANCE OF CROSSBRED HOLSTEIN X ZEBU HEIFERS IN GRAZING, SUBMITTED TO PROTEIN SUPPLEMENTATION DURING THE RAINY SEASON |
title_full_unstemmed |
GROWTH, INGESTIVE BEHAVIOR AND REPRODUCTIVE PERFORMANCE OF CROSSBRED HOLSTEIN X ZEBU HEIFERS IN GRAZING, SUBMITTED TO PROTEIN SUPPLEMENTATION DURING THE RAINY SEASON |
title_sort |
GROWTH, INGESTIVE BEHAVIOR AND REPRODUCTIVE PERFORMANCE OF CROSSBRED HOLSTEIN X ZEBU HEIFERS IN GRAZING, SUBMITTED TO PROTEIN SUPPLEMENTATION DURING THE RAINY SEASON |
author |
Signoretti, Ricardo Dias |
author_facet |
Signoretti, Ricardo Dias Queiroz, Maria Fernanda S. Berchielli, Telma Teresinha Shmidek, Anita Oliveira, Elisa Marcela de Dib, Vanessa |
author_role |
author |
author2 |
Queiroz, Maria Fernanda S. Berchielli, Telma Teresinha Shmidek, Anita Oliveira, Elisa Marcela de Dib, Vanessa |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Signoretti, Ricardo Dias Queiroz, Maria Fernanda S. Berchielli, Telma Teresinha Shmidek, Anita Oliveira, Elisa Marcela de Dib, Vanessa |
dc.subject.por.fl_str_mv |
Animal Supplementation Desempenho recria novilhas leiteiras suplementação a pasto |
topic |
Animal Supplementation Desempenho recria novilhas leiteiras suplementação a pasto |
description |
The objective of this study was to evaluate the effect of supplemental protein during the rainy season on body growth, ingestive behavior and reproductive performance of crossbred Gir x Holstein dairy heifers, with mean age of 21 ± 4.1 months and average initial body weight of 296.7 ± 57.3 kg, distributed in a completely randomized design with four treatments and six replicates per treatment. Heifers remained on Brachiaria brizantha cv. Marandu pasture, managed according to a rotational grazing system and, as treatment, it was supplemented with protein concentrate (34%, 43%, 56% and 66% BW) and level of supply of 0.30% body weight (BW). The animals were weighed and the mean weight of the lot was used for the calculation of adjustment of the amount of concentrate offered. Heifers that reached 330.0 kg of live weight were artificially inseminated and, 45 days after insemination, pregnancy diagnosis was performed for the calculation of pregnancy rate and age at conception. No significant difference of protein levels was observed on grazing, eating behavior, productive performance and age at conception of dairy heifers on pasture. The average daily weight gain of BW and age at conception were, on average, 0.907 kg / animal and 24.03 months, respectively.KEYWORDS: grazing; heifers rearing; pregnancy rate; supplementation; weight gain. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-09-28 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Research Avaliado por pares Pesquisa Científica |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://revistas.ufg.br/vet/article/view/14425 10.5216/cab.v13i3.14425 |
url |
https://revistas.ufg.br/vet/article/view/14425 |
identifier_str_mv |
10.5216/cab.v13i3.14425 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://revistas.ufg.br/vet/article/view/14425/11953 https://revistas.ufg.br/vet/article/view/14425/11954 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf text/html |
dc.publisher.none.fl_str_mv |
Universidade Federal de Goiás |
publisher.none.fl_str_mv |
Universidade Federal de Goiás |
dc.source.none.fl_str_mv |
Brazilian Animal Science/ Ciência Animal Brasileira; Vol. 13 No. 3 (2012); 298-305 Ciência Animal Brasileira / Brazilian Animal Science; v. 13 n. 3 (2012); 298-305 1809-6891 1518-2797 reponame:Ciência animal brasileira (Online) instname:Universidade Federal de Goiás (UFG) instacron:UFG |
instname_str |
Universidade Federal de Goiás (UFG) |
instacron_str |
UFG |
institution |
UFG |
reponame_str |
Ciência animal brasileira (Online) |
collection |
Ciência animal brasileira (Online) |
repository.name.fl_str_mv |
Ciência animal brasileira (Online) - Universidade Federal de Goiás (UFG) |
repository.mail.fl_str_mv |
||revistacab@gmail.com |
_version_ |
1799874787156164608 |