Produção de cordeiros em pastejo contínuo de azevém anual submetido à adubação nitrogenada

Pellegrini, Luiz Giovani de; Monteiro, Alda Lúcia Gomes; Neumann, Mikael; Moraes, Aníbal de; Filho, Amadeu Bona; Molento, Marcelo Beltrão; Pellegrin, Ana Carolina Ribeiro Sanquetta de

doi:10.1590/s0103-84782010005000095

Cited by 12 publications

(6 citation statements)

References 13 publications

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“…Moreover, the supplementation levels of 5, 10 and 15 g kg -1 of BW increased the stocking rate on 14, 29 and 64% respectively compared to animals without supplementation. These data is similar to those reported by Pellegrini et al (2010) and Pontes, Carvalho and Nabinger (2004), both studies done with sheep grazing ryegrass.…”

Section: Resultssupporting

confidence: 92%

Decomposition and nitrogen release in areas with and without grazing and its influence on corn

et al. 2013

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This study aimed to evaluate the dry matter decomposition and N release from black oat residues and dung from goats, as well as its influence on corn yield grown in succession under increasing levels of N applied in topdressing. At winter, treatments consisted of different levels of a dietary supplement corresponding to 0, 5, 10 and 15 g kg -1 of body weight of females, Boer goats grazing oat cv. IAPAR 61 and a treatment without grazing. During the winter period were evaluated: forage sward, mass and its forage production, stocking rate, animal live weight gain, content of mineral N in the soil. At the end of grazing period, dry matter decomposition rate and N release from black oat residual biomass and animal dung were evaluated. At summer, main plots were divided into sub-plots and N applied at increasing levels over the corn crop (0, 50, 100 and 150 kg ha -1 of N as urea). During this period, corn yield was evaluated. Grazed areas at winter under increasing levels of supplementation resulted in an increase of animal production and increased dry matter decomposition rate and N release from the pasture when compared to ungrazed areas. At the ungrazed areas, it was necessary to apply 150 kg ha -1 of N in sidedress to ensure the same corn yield obtained at the grazing treatments without N application. Key words: Black oat, grain yield, supplementation, decomposition rate ResumoO objetivo do presente estudo foi verificar a decomposição e liberação de N dos resíduos vegetais de aveia e dejetos de caprinos, bem como sua influência no rendimento do milho cultivado em sucessão sob crescentes doses de N aplicados em cobertura. No inverno os tratamentos se constituíram do uso de suplemento alimentar correspondente a 0, 5, 10 e 15 g kg -1 do peso vivo de fêmeas de caprinos da raça Bôer em pastejo de aveia preta cv. IAPAR 61 e um tratamento sem pastejo. Durante o período de inverno foram avaliados: altura, massa e produção da forragem; carga e ganho de peso animal e teores de N-mineral no solo. Após o término do período de pastejo foi avaliada a decomposição da matéria seca e taxa de liberação de N da forragem e do esterco. No verão as parcelas foram subdivididas e doses crescentes de N foram aplicadas em cobertura na cultura do milho (0, 50, 100 e 150 kg ha -1 de N na forma de uréia). Nesta fase, foi avaliado o rendimento do milho. As áreas pastejadas no inverno sob 1 Profs. do Instituto Federal do Paraná, IFPR, Palmas, PR.

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Section: Resultssupporting

confidence: 92%

Decomposition and nitrogen release in areas with and without grazing and its influence on corn

et al. 2013

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“…Moreover, the supplementation levels of 5, 10, and 15 g kg -1 of BW increased the stocking rate to 14, 29, and 64%, respectively, compared with that of animals without supplementation. These data are similar to those reported by PELLEGRINI et al (2010) in a study with lambs under continuous stocking rate grazing ryegrass with levels of nitrogen fertilization. However, literature values were not found for the same management conditions with goats.…”

Section: Resultssupporting

confidence: 90%

Efeito do pastejo de caprinos com diferentes lotações em pastagem de aveia preta e rendimento de milho com distintas adubações nitrogenadas em sucessão

Pitta

Silveira

Adami

et al. 2019

Rev. Ciênc. Agrovet.

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This study aimed to evaluate the performance of goats grazing black oat (Avena strigosa) fed with different levels of supplementation as well as its influence on soil resistance to penetration and corn yield grown in succession with increasing levels of N top dressing. In the winter, ten month-old Boer goats received supplementation levels at 0, 5, 10, and 15 g kg -1 of body weight, in continuous stocking grazing, with variable stocking rate, and with a control without grazing. In the summer, the main plots were divided into sub-plots and N was applied at increasing levels in top dressing on the corn crop (0, 50, 100, and 150 kg ha -1 of N as urea). In the winter, the forage sward mass and its forage production, stocking rate, animal live weight gain and soil resistance to penetration were evaluated. In the summer, the corn yield components were evaluated. Stocking rate increased as supplement levels increased, which also increased the intensity of trampling and hence the resistance to soil penetration in the surface layer without affecting the grain yield of the corn grown in succession. When winter grazing is in accordance with the forage height and the fertilization, it reduces the need for nitrogen in the summer to obtain the corn yield produced in ungrazed areas in the winter.

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“…Nas demais variáveis de pasto analisadas (Tabela 2), as oscilações observadas referem-se ao desenvolvimento da aveia, e são consideradas normais, por estarem relacionadas às alterações fenológicas da planta. A oscilação nos valores das variáveis avaliadas, no entanto, não foram suficientes para causarem condições de avaliação distintas entre os tratamentos (p>0,05), não causaram limitação ao consumo animal e estão em sintonia com o relatado na literatura (Gibb et al, 2002;Frescura et al, 2005;Assmann et al, 2010;Pellegrini et al, 2010).…”

Section: Resultsunclassified

Comportamento ingestivo, consumo de forragem e desempenho de cabritas alimentadas com diferentes níveis de suplementação

Adami

Pitta

Silveira

et al. 2013

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar as alterações no comportamento ingestivo, consumo diário de forragem e desempenho de cabritas alimentadas com diferentes níveis de suplementação, em pastagem de aveia-preta (Avena strigosa, 'IAPAR 61'). Foram utilizadas 36 cabritas da raça Boer, com 10 meses de idade e peso médio inicial de 21 kg, que receberam suplementação alimentar com milho moído e farelo de soja a 0, 0,5, 1 e 1,5% do peso vivo, em pastejo de lotação contínua com taxa de lotação variável. Utilizou-se o delineamento experimental de blocos ao acaso com três repetições. Foram avaliados: altura, taxa de acúmulo, massa, oferta e estrutura da pastagem; carga animal; ganho de peso individual e por área; e tempo de pastejo, ruminação e ócio (comportamento ingestivo); além do consumo de forragem. A suplementação diminuiu o consumo de forragem -2,4, 1,45, 1,43 e 1,05% do peso vivo, nos tratamentos com 0, 0,5, 1 e 1,5%, respectivamente -, o tempo de pastejo diário e o ganho de peso individual. Os níveis de suplementação não alteraram o consumo total de matéria seca (forragem + concentrado) e nem o tempo de ruminação, mas aumentaram o tempo de ócio, o que permitiu maior desempenho dos animais por área.Termos para indexação: estrutura da pastagem, ganho de peso, óxido de cromo, tempo de pastejo. Ingestive behavior, forage intake and performance of goats fed with different levels of supplementationAbstract -The objective of this work was to evaluate changes in ingestive behavior, dry matter intake, and performance of goats fed with different levels of supplementation, in black oat pasture (Avena strigosa, 'IAPAR 61'). Thirty-six ten-month-old Boer goats were used, with an initial average weight of 21 kg, which received supplementation with 0, 0.5, 1 and 1.5% of body weight, in continuous stocking grazing with variable stocking rate. A randomized block design was used with three replicates. Evaluations were done for: height, accumulation rate, mass, offer, and structure of the pasture; stocking rate; individual and per-area weight gain; and time used for grazing, rumination and resting periods (ingestive behavior); besides forage intake. Supplementation decreased forage intake -2.4, 1.45, 1.43, and 1.05% of body weight, in treatments with 0, 0.5, 1 and 1.5%, respectively -, daily grazing time, and the individual weight gain. The supplementation levels did not change total dry matter intake (forage + concentrate) neither the rumination time, but they increased resting time, which allowed greater animal performance per area.

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Produção de cordeiros em pastejo contínuo de azevém anual submetido à adubação nitrogenada

Cited by 12 publications

References 13 publications

Decomposition and nitrogen release in areas with and without grazing and its influence on corn

Decomposition and nitrogen release in areas with and without grazing and its influence on corn

Efeito do pastejo de caprinos com diferentes lotações em pastagem de aveia preta e rendimento de milho com distintas adubações nitrogenadas em sucessão

Comportamento ingestivo, consumo de forragem e desempenho de cabritas alimentadas com diferentes níveis de suplementação

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