Ingestão de matéria seca por novilhas de corte em pastagem de milheto

Montagner, Denise Baptaglin; Rocha, Marta Gomes da; Genro, T. C. M.; Bremm, Carolina; Santos, Davi Teixeira dos; Roman, Juliano; Roso, Dalton

doi:10.1590/s0103-84782011000400023

Cited by 4 publications

(7 citation statements)

References 11 publications

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“…In these studies, the fresh matter was used for the determination of the mass of pasture. According to Montagner et al (2011), the voluntary consumption of pasture by the animals and, consequently, their development, are influenced by the amount of pasture and, more precisely, by the mass of green leaves.…”

Section: Introductionmentioning

confidence: 99%

Plot size and number of replicates in times of sowing and cuts of millet

Burin

Filho

Alves

et al. 2016

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThe objective of this study was to determine the optimum plot size (Xo) and number of replicates to evaluate millet shoot fresh matter in times of sowing and cuts. Uniformity trials of 6 × 4 m (24 m 2 ) were carried out in three sowing times, in the agricultural year of 2013-2014. Each uniformity trial was divided into 24 basic experimental units (BEU) of 1 × 1 m (1 m 2 ) and the shoot fresh matter of plants in each BEU was weighed. The Xo was determined by the method of maximum curvature of the coefficient of variation model. The number of replicates for experiments in completely randomized and randomized block design, in scenarios of combinations of i treatments (i = 3, 4, ..., 50) and d minimal differences between treatment means, to be detected as significant at 0.05 probability level by Tukey test, expressed in percentage of the experiment mean (d = 10, 12, ..., 30%), was determined by iterative process until convergence. The optimum plot size to evaluate millet shoot fresh matter is 4.97 m 2 , for the three times of sowing and cuts. For the evaluation of up to 50 treatments, in completely randomized and randomized block design, five replicates are sufficient to identify as significant, at 0.05 probability level by Tukey test, differences between treatment means of 28.66% of the mean of the experiment.Tamanho de parcela e número de repetições em milheto em épocas de semeadura e cortes (1 m 2 ) e pesada a massa verde da parte aérea das plantas de cada UEB. O Xo foi determinado por meio do método da curvatura máxima do modelo do coeficiente de variação. O número de repetições para experimentos nos delineamentos inteiramente casualizados e blocos ao acaso, em cenários formados pelas combinações de i tratamentos (i = 3, 4, ..., 50) e diferenças mínimas entre médias de tratamentos a serem detectadas como significativas a 0,05 de probabilidade, pelo teste de Tukey, expressas em percentagem da média do experimento (d = 10, 12, ..., 30%) foi realizado por processo iterativo até a convergência. O tamanho ótimo de parcela para avaliar a massa verde da parte aérea de milheto é de 4,97 m 2 , para as três épocas de semeadura e cortes. Para avaliar até 50 tratamentos nos delineamentos inteiramente casualizados e blocos ao acaso, cinco repetições são suficientes para identificar, como significativas, pelo teste de Tukey, a 0,05 de probabilidade, diferenças entre médias de tratamentos de 28,66% da média do experimento. Key words:Pennisetum glaucum (L.) R. Brown maximum curvature of the coefficientof variation model experiment planning Palavras-chave:Pennisetum glaucum (L.) R. Brown curvatura máxima do modelo do coeficiente de variação planejamento experimental

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Section: Introductionmentioning

confidence: 99%

Plot size and number of replicates in times of sowing and cuts of millet

Burin

Filho

Alves

et al. 2016

Rev. bras. eng. agríc. ambient.

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“…The LS ratio is important to animal nutrition and pasture management because higher leaf or stem mass in the HM changes the composition of consumed forage (Kroth, Silva, Silva, Koetz, & Schlichting, 2015). Even with the lower LS ratio in the spring, which could limit food capture by the animals (Euclides, Montagner, Barbosa, & Nantes, 2014), the amount of leaves, which is associated with greater ease of forage collection and voluntary intake (Montagner et al, 2011), did not negatively affect animal performance. Aguilar et al (2019) evaluated the performance of Nellore heifers on U. brizantha 'Marandu' pasture fertilized with nitrogen and reported a higher ADG caused by the positive effects of nitrogen fertilization, which provided a greater availability of leaf blades, resulting in intake of forage with better nutritive value.…”

Section: Resultsmentioning

confidence: 96%

Forage characteristics and beef cattle production in perennial pastures of BRS Paiaguás and BRS Piatã in integrated crop livestock system

Sekiya

Lupatini

Andrighetto

et al. 2021

Semina: Ciênc. Agrár.

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The integrated crop-livestock system is highlighted in Brazilian agriculture, in which the synergism between the components can increase productivity and animal performance. Forage is one of the most important components because it is the basis of animal feed. Thus, the objective of the study was to evaluate the beef cattle production and pastures characteristics of Urochloa brizantha ‘BRS Piatã’ and ‘BRS Paiaguás’, under continuous grazing in an integrated crop livestock system. The experiment was conducted in west of Sao Paulo State, in a randomized complete block design with two treatments and three replicates, from October 2018 to June 2019. The treatments were 3-year-old pastures of BRS Piatã and Paiaguás, in an integrated crop livestock system with perennial pasture and soybean. Nellore steers (14 ± 2 months old and 244 ± 13 kg initial weight) were used. The grazing method adopted was a continuous stocking with a variable rate to maintain a pasture height of 30 cm. Herbage mass was 5716 and 5480 kg dry matter ha-1 for Piatã and Paiaguás, respectively. The crude protein, neutral detergent fiber, and acid detergent fiber were similar between the two cultivars. The leaf blade mass of BRS Piatã was greater than that of BRS Paiaguás in summer. Animal performance was similar between treatments, with average daily gain of 0.901 and 0.822 kg day-1 and weight gain per area of 888 and 865 kg ha-1 in Piatã and Paiaguás, respectively. The BRS Piatã and BRS Paiaguás grasses are indicated for use in perennial pastures in integrated crop livestock systems.

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“…Ao avaliar pastagens de milheto e papuã (Urochloa plantaginea (Link) Hitch), Souza et al (2011) através do mesmo método de pastejo do presente trabalho, concluíram que ambas as pastagens quando manejadas a 40 cm de altura de dossel não determinam alterações no comportamento ingestivo dos animais. Em pastagens tropicais, a altura do dossel influencia diretamente na acessibilidade e facilidade de apreensão do animal as partes preferíveis da planta durante o pastejo (Montagner et al, 2011).…”

Section: Resultsunclassified

Padrões de desfolha do milheto (Pennisetum americanum (L.) Leeke) pastejado por bezerras de corte

Monfardini

Rocha

Rosa

et al. 2022

RSD

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O trabalho foi realizado com o objetivo de avaliar a intensidade de desfolha, a taxa de retorno e as características estruturais do milheto (Pennisetum americanum (L.) Leeke) pastejado por bezerras de corte em dois estádios fenológicos dessa forrageira. Foi utilizado o método de pastejo com lotação contínua e número variável de animais para manter a altura do dossel entre 30 e 40 cm. O delineamento experimental utilizado foi o inteiramente casualizado com dois estádios fenológicos, vegetativo e pré-reprodutivo, com oito repetições de área. O número total de folhas foi 21,8% maior no estádio vegetativo. A densidade populacional de perfilhos basais (116,0/m²) e axilares (101,4 perfilhos/m²) foi semelhante nos estádios. A intensidade de desfolha média foi de 47% e a taxa geral de retorno foi de 5,6 dias. Cada bezerra pastejou uma área de 395,3 m²/dia. As lâminas foliares foram pastejadas 4,7 vezes durante a duração da vida da folha e o acúmulo térmico observado entre os intervalos de desfolha, foi suficiente para que 1,2 nova folha fosse emitida antes do próximo evento de desfolha. As bezerras mantiveram estratégia de pastejo similar durante os estádios avaliados com semelhante intensidade de desfolha e taxa de retorno das folhas expandidas e em expansão.

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Ingestão de matéria seca por novilhas de corte em pastagem de milheto

Abstract: RESUMO Em pastagem de milheto (Pennisetum americanun (L.) Leeke), foram avaliadas a ingestão de matéria seca (MS)da

Cited by 4 publications

References 11 publications

Plot size and number of replicates in times of sowing and cuts of millet

Plot size and number of replicates in times of sowing and cuts of millet

Forage characteristics and beef cattle production in perennial pastures of BRS Paiaguás and BRS Piatã in integrated crop livestock system

Padrões de desfolha do milheto (Pennisetum americanum (L.) Leeke) pastejado por bezerras de corte

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