Sistema de integração lavoura-pecuária: desempenho e qualidade da carcaça de novilhos superprecoces terminados em pastagem de aveia e azevém manejada sob diferentes alturas

Lopes, Marcela Silva; Carvalho, Paulo César de Faccio; Anghinoni, Ibanor; Santos, Davi Teixeira dos; Kuss, Fernando; Freitas, Fabiana Kellermann de; Flores, João Paulo Cassol

doi:10.1590/s0103-84782008000100029

Cited by 26 publications

(22 citation statements)

References 6 publications

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“…With regard to FA and BLA variables, they increased linearly with the increase of SH. This response corroborates with the results obtained in previous studies (BAGGIO et al, 2008;LOPES et al, 2008).…”

Section: Sward Parameterssupporting

confidence: 93%

“…As a consequence, the grazing animal increases the number of feeding stations visited in response to the restricted forage allowance (BAGGIO et al, 2008). In such a situation, grazing animals have higher energy costs, which result in limited performance and affects carcass characteristics when destined for finishing and slaughter (LOPES et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Steers production in integrated crop-livestock systems: pasture management under different sward heights

Wesp

Carvalho

Conte

et al. 2016

Revista Ciência Agronômica

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-The aim of this study was to evaluate the effects of different grazing intensities on forage production and animal performance of yearling steers kept under permanent grazing in an integrated crop-livestock system. The treatments consisted of areas with sward heights of 10; 20; 30 and 40 cm, and one treatment with no grazing. The pastures were of bristle oat (Avena strigosa Schreb.) and annual ryegrass (Lolium multiflorum Lam.) following soybean (Glycine max (L.) Merr.). The variables forage mass, forage allowance and residual straw showed a positive and linear fit to the increasing sward height (P 0.0001). Average daily gain of steers displayed a quadratic response (P = 0.0017), being optimal with increases in grazing height up to values of near 30 cm, showing a weight gain per animal of approximately 1.0 kg day -1. A similar response was seen for live weight at slaughter and carcass characteristics (P 0.0305). The results suggest that sward heights close to 30 cm provide greater individual gains, due to the increase in forage available to each animal and the better quality of the consumed forage without compromising the residual straw destined for the following crop. RESUMO -O objetivo deste trabalho foi avaliar o efeito de diferentes intensidades de pastejo sob a produção de forragem e o desempenho animal de novilhos superprecoces mantidos sob pastejo contínuo em sistema integrado de produção agropecuária. Os tratamentos consistiram das alturas de manejo de pasto de 10; 20; 30 e 40 cm; e de um tratamento sem pastejo. Os pastos eram constituídos de aveia-preta (Avena strigosa Schreb.) e azevém anual (Lolium multiflorum Lam.) em sucessão a cultura da soja (Glycine max (L.) Merr.). As variáveis massa de forragem, oferta de forragem e palhada residual se ajustaram de forma positiva e linear ao incremento da altura do pasto (P 0,0001). O desempenho individual de novilhos apresentou resposta quadrática (P = 0,0017) e foi otimizado com o incremento na altura do pasto até valores próximos a 30 cm, com ganho de peso por animal de aproximadamente 1,0 kg dia -1. O mesmo foi observado para o peso vivo ao abate e as características de carcaça (P 0,0305). Os resultados sugerem que alturas próximas a 30 cm permitem maiores ganhos individuais, devido ao aumento da quantidade de forragem disponível por animal e a melhor qualidade da forragem consumida, não havendo comprometimento da palhada residual destinada à cultura subsequente. Palavras-chave:Novilhos. Pastagem-manejo. Carga animal. Ganho médio diário. Peso de carcaça.

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Section: Sward Parameterssupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Steers production in integrated crop-livestock systems: pasture management under different sward heights

Wesp

Carvalho

Conte

et al. 2016

Revista Ciência Agronômica

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“…Com respeito ao manejo e à produção animal em áreas sob SILP no Sul do Brasil, avanços recentes têm sido relatados na literatura (AGUINAGA et al, 2006;TERRA LOPES et al, 2008). No entanto, estudos referentes ao manejo dessas áreas sob pastejo e seu efeito na produção de grãos subsequente ainda são escassos.…”

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Sistema de integração lavoura-pecuária: efeito do manejo da altura em pastagem de aveia preta e azevém anual sobre o rendimento da cultura da soja

et al. 2009

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“…On oats plus Italian ryegrass pasture is recommended a management to maintain the sward at a 10cm height for greater animal production per area. However, for individual gains, higher canopy heights are recommended (Lopes et al, 2008).…”

Section: Resultsmentioning

confidence: 99%

Ingestive behavior and displacement patterns of beef heifers on Italian ryegrass pasture

et al. 2010

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-The effect of supplementation on ingestive behavior and displacement patterns of beef heifers grazing on Italian ryegrass (Lolium multiflorum Lam.) pasture was evaluated. The grazing method was continuous with variable stocking rate. The experimental design was completely randomized with repeated measures on time. The supplement utilized was a commercial ration (17% CP, 21.4% NDF), daily supplied at 2 pm, in the proportion of 1% of body weight. The evaluations were made through visual observations, in four continuous periods of 24 hours. There was no difference in the bite rate between heifers with and without supplement and bite rate was higher at the end of the period of pasture utilization.Supplemented animals increased bite mass. The number of stations/minute, bites/station and the displacement patterns was influenced by forage changes along the occupation period. The ingestive behavior and displacement patterns of heifers are modified by supplementation and structural variation of the grass along its biological cycle. In the reproductive stage of Italian ryegrass, grazing time, daily number of bites and, feeding stations and time for station are similar between not supplemented and supplemented heifers.

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Sistema de integração lavoura-pecuária: desempenho e qualidade da carcaça de novilhos superprecoces terminados em pastagem de aveia e azevém manejada sob diferentes alturas

Cited by 26 publications

References 6 publications

Steers production in integrated crop-livestock systems: pasture management under different sward heights

Steers production in integrated crop-livestock systems: pasture management under different sward heights

Sistema de integração lavoura-pecuária: efeito do manejo da altura em pastagem de aveia preta e azevém anual sobre o rendimento da cultura da soja

Ingestive behavior and displacement patterns of beef heifers on Italian ryegrass pasture

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