Dairy heifers’ performance in winter annual pastures under integrated crop‑livestock system

Dairy heifers’ performance in winter annual pastures under integrated crop‑livestock system

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The objective of this work was to assess the rearing viability of dairy heifers grazing single or intercropped winter pastures, under crop-livestock integration system. The experiment was carried out in Castro, Paraná state, Brazil. A complete block design was used, in a factorial arrangement, with two animal categories – light-weight, with 192±40.9 kg, and heavy-weight animals, with 278±41.2 kg –, and two pasture types: annual ryegrass (Lolium multiflorum) intercropped with black oat (Avena strigosa), white clover (Trifolium repens) and red clover (Trifolium pratense); and single annual ryegrass pasture. A continuous grazing method with variable stocking was used, with 20-cm sward management height. Single annual ryegrass pasture provided an average daily gain (0.93±0.032 kg per day per animal) significantly higher than intercropped pastures (0.79±0.032 kg per day). Light animals had higher weight gain per hectare (3.54±0.163 kg ha-1 per day) than heavy animals (2.99±0.163 kg ha-1 per day), which was influenced by pasture type: light animals had best performance on single pasture, and heavy animals on intercropped pastures. Rearing dairy heifers is viable in the pasture phase of integrated crop-livestock systems.

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Main Authors: da Silva, Hernani Alves, de Moraes, Aníbal, Carvalho, Paulo César de Faccio, Pontes, Laíse da Silveira
Format: Digital revista
Language:por
Published: Pesquisa Agropecuaria Brasileira 2012
Online Access:https://seer.sct.embrapa.br/index.php/pab/article/view/9075
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spelling rev-pab-br-article-90752014-06-20T20:22:49Z Dairy heifers’ performance in winter annual pastures under integrated crop‑livestock system Desempenho de novilhas leiteiras em pastagens anuais de inverno sob sistema de integração lavoura‑pecuária da Silva, Hernani Alves de Moraes, Aníbal Carvalho, Paulo César de Faccio Pontes, Laíse da Silveira animal performance; heifer rearing; integrated production system desempenho animal; recria de novilhas; sistema integrado de produção The objective of this work was to assess the rearing viability of dairy heifers grazing single or intercropped winter pastures, under crop-livestock integration system. The experiment was carried out in Castro, Paraná state, Brazil. A complete block design was used, in a factorial arrangement, with two animal categories – light-weight, with 192±40.9 kg, and heavy-weight animals, with 278±41.2 kg –, and two pasture types: annual ryegrass (Lolium multiflorum) intercropped with black oat (Avena strigosa), white clover (Trifolium repens) and red clover (Trifolium pratense); and single annual ryegrass pasture. A continuous grazing method with variable stocking was used, with 20-cm sward management height. Single annual ryegrass pasture provided an average daily gain (0.93±0.032 kg per day per animal) significantly higher than intercropped pastures (0.79±0.032 kg per day). Light animals had higher weight gain per hectare (3.54±0.163 kg ha-1 per day) than heavy animals (2.99±0.163 kg ha-1 per day), which was influenced by pasture type: light animals had best performance on single pasture, and heavy animals on intercropped pastures. Rearing dairy heifers is viable in the pasture phase of integrated crop-livestock systems. O objetivo deste trabalho foi avaliar a viabilidade da recria de novilhas leiteiras em pastagens de inverno puras ou consorciadas, sob sistema de integração lavoura-pecuária. O experimento foi realizado no Município de Castro, PR. Utilizou-se o delineamento experimental de blocos ao acaso, em arranjo fatorial, com duas categorias de animais – leves, com 192±40,9 kg, e pesados, com 278±41,2 kg –, e dois tipos de pastagem: consorciada, composta de azevém anual (Lolium multiflorum), aveia-preta (Avena strigosa), trevo branco (Trifolium repens) e trevo vermelho (Trifolium pratense); e pastagem pura de azevém anual. Foi utilizado o método de pastoreio contínuo com lotação variável, com altura de manejo de 20 cm. A pastagem com azevém anual proporcionou ganho de peso médio diário significativamente superior (0,93±0,032 kg por dia por animal) ao da pastagem consorciada (0,79±0,032 kg por dia por animal). Os animais leves apresentaram maior ganho de peso por hectare (3,54±0,163 kg ha-1 por dia) do que os pesados (2,99±0,163 kg ha-1 por dia), o que foi influenciado pelo tipo de pastagem: animais leves apresentaram melhor desempenho em pastagem pura, e animais pesados em pastagem consorciada. A recria de novilhas leiteiras é viável durante a fase de pastagens de sistemas de integração lavoura-pecuária. Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira 2012-01-02 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://seer.sct.embrapa.br/index.php/pab/article/view/9075 Pesquisa Agropecuaria Brasileira; v.46, n.10, out. 2011: Número Temático Sistemas de Integração Lavoura-Pecuária-Floresta; 1372-1378 Pesquisa Agropecuária Brasileira; v.46, n.10, out. 2011: Número Temático Sistemas de Integração Lavoura-Pecuária-Floresta; 1372-1378 1678-3921 0100-104x por https://seer.sct.embrapa.br/index.php/pab/article/view/9075/6649 https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/9075/4449 https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/9075/4566 https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/9075/5436 https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/9075/5437
institution EMBRAPA
collection OJS
country Brasil
countrycode BR
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access En linea
databasecode rev-pab-br
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region America del Sur
libraryname Sistema de bibliotecas de EMBRAPA
language por
format Digital
author da Silva, Hernani Alves
de Moraes, Aníbal
Carvalho, Paulo César de Faccio
Pontes, Laíse da Silveira
spellingShingle da Silva, Hernani Alves
de Moraes, Aníbal
Carvalho, Paulo César de Faccio
Pontes, Laíse da Silveira
Dairy heifers’ performance in winter annual pastures under integrated crop‑livestock system
author_facet da Silva, Hernani Alves
de Moraes, Aníbal
Carvalho, Paulo César de Faccio
Pontes, Laíse da Silveira
author_sort da Silva, Hernani Alves
title Dairy heifers’ performance in winter annual pastures under integrated crop‑livestock system
title_short Dairy heifers’ performance in winter annual pastures under integrated crop‑livestock system
title_full Dairy heifers’ performance in winter annual pastures under integrated crop‑livestock system
title_fullStr Dairy heifers’ performance in winter annual pastures under integrated crop‑livestock system
title_full_unstemmed Dairy heifers’ performance in winter annual pastures under integrated crop‑livestock system
title_sort dairy heifers’ performance in winter annual pastures under integrated crop‑livestock system
description The objective of this work was to assess the rearing viability of dairy heifers grazing single or intercropped winter pastures, under crop-livestock integration system. The experiment was carried out in Castro, Paraná state, Brazil. A complete block design was used, in a factorial arrangement, with two animal categories – light-weight, with 192±40.9 kg, and heavy-weight animals, with 278±41.2 kg –, and two pasture types: annual ryegrass (Lolium multiflorum) intercropped with black oat (Avena strigosa), white clover (Trifolium repens) and red clover (Trifolium pratense); and single annual ryegrass pasture. A continuous grazing method with variable stocking was used, with 20-cm sward management height. Single annual ryegrass pasture provided an average daily gain (0.93±0.032 kg per day per animal) significantly higher than intercropped pastures (0.79±0.032 kg per day). Light animals had higher weight gain per hectare (3.54±0.163 kg ha-1 per day) than heavy animals (2.99±0.163 kg ha-1 per day), which was influenced by pasture type: light animals had best performance on single pasture, and heavy animals on intercropped pastures. Rearing dairy heifers is viable in the pasture phase of integrated crop-livestock systems.
publisher Pesquisa Agropecuaria Brasileira
publishDate 2012
url https://seer.sct.embrapa.br/index.php/pab/article/view/9075
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