Fluxos de tecidos foliares em papuã sob pastejo de bezerras de corte em diferentes frequências de suplementação

Salvador, Paulo Roberto; Pötter, Luciana; Rocha, Marta Gomes da; Eloy, Lidiane Raquel; Hampel, Viviane da Silva; Stivanin, Sheila Cristina Bosco; Rosa, Alexandre Pires; Sichonany, Maria José de Oliveira

doi:10.1590/s1519-99402014000400004

Cited by 5 publications

(6 citation statements)

References 12 publications

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“…During pre-flowering, floral induction possibly decreased the FGro. During elongation of the apical meristem of grasses, the plant ceases leaf production and all nutrient allocation to older leaves, and the photo-assimilates produced are reserved for internodal elongation and reproductive structure formation (SALVADOR et al, 2014).…”

Section: Resultsmentioning

confidence: 99%

Effect of herbage allowances on biomass flows in Italian ryegrass

et al. 2019

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The objective of this study was to determine the leaf tissue flows in Italian ryegrass (Lolium multiflorum Lam.), in different phenological stages, grazed by lambs, and managed under three herbage allowances (6, 9 and 12 kg DM/100 kg body weight under rotational stocking method. The experimental design was completely randomized, with repeated measures arrangement. Forage allowances determined similar growth and intake flows, actual and potential utilization efficiencies of grass and they were different in the phenological stages of Italian ryegrass. The intake of leaf blade, as a percentage of body weight, was higher in the 12% herbage allowance. Considering leaf tissue flows, Italian ryegrass can be managed in forage allowances that vary between 6 and 12 kg DM/100 kg body weight.

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Section: Resultsmentioning

confidence: 99%

Effect of herbage allowances on biomass flows in Italian ryegrass

et al. 2019

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“…Segundo Pontes et al (2004), as lâminas foliares em expansão, pela forma que os animais pastejam e pela posição que essas ocupam no perfilho, tem mais chances de serem consumidas que as lâminas foliares mais velhas. Em papuã (Urochloa plantaginea (Link) Hitch), pastejado por bezerras de corte, sob lotação contínua, Salvador et al (2014) Considerando a taxa média de retorno, de 5,6 dias, as bezerras pastejaram diariamente 17,8% da área total, ou seja, cada bezerra utilizou uma área de 395,3 m²/dia. Tendo em conta que a duração de vida da folha foi de 308,4 graus-dia e o acúmulo térmico observado entre as desfolhações foi de 65,7 graus-dia, cada lâmina foliar foi pastejada 4,7 vezes durante a sua duração de vida.…”

Section: Variáveisunclassified

“…A frequência com que um mesmo perfilho é pastejado é definida como o intervalo entre duas desfolhações sucessivas, correspondente à probabilidade diária de cada órgão vegetal ser desfolhado (Lemaire & Chapman, 1996). A intensidade de remoção de lâminas foliares e a frequência de pastejo são importantes condicionadores da estrutura da planta no dossel, e determinam a resposta da planta frente à ação do herbívoro (Salvador et al, 2014).…”

Section: Introductionunclassified

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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“…When heifers received a protein supplement, DM intake, average daily gain and body condition score were similar between heifers receiving supplement or not (Oliveira Netoet al, 2013). When oat grain was given at different supplementation frequencies, the average daily gain of heifers was similar among the tested feeding systems (Salvador et al, 2014). Studies on the use of energetic supplements for heifers grazing on Alexandergrass under rotational stocking, however, are lacking.…”

Section: Introductionmentioning

confidence: 99%

“…Different types of supplement were tested for cattle on continuously stocked Alexandergrass pasture (Oliveira Netoet al, 2013;Salvador et al, 2014). When heifers received a protein supplement, DM intake, average daily gain and body condition score were similar between heifers receiving supplement or not (Oliveira Netoet al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Forage intake and performance of heifers fed rice bran on Alexandergrass pasture

Negrini

Rocha

Pötter

et al. 2018

Arq. Bras. Med. Vet. Zootec.

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The study was carried out to evaluate the forage intake and performance of beef heifers from 15 to 18 months of age, grazing on Alexandergrass (Urochloaplantaginea (Link) Hitch) fed rice bran (RB; 0, 0.5 and 1.0% body weight (BW)). The experiment consisted of a completely randomized design with repeated measurement arrangement. Rice bran increased the total dry matter (DM) intake, total crude protein intake and total digestible nutrients intake. Heifers that received 1.0% BW of RB reduced forage DM intake, increasing by 18% stocking rate (SR) and by 27% BW gain per area in comparison with the system exclusively on pasture. In the system in which the heifers were fed 0.5% BW of RB, SR and gain per area were similar to other systems. In this feeding system, we observed average daily gain 18% higher than when heifers were exclusively on pasture and gain similar to that observed when using 1.0% BW of RB. In Alexandergrass pasture it is recommended to supply 0.5% BW of RB for beef heifers from 15 to 18 months of age, to promote better productive responses compared to heifers exclusively on pasture and similar to those observed when supplying 1.0% BW of RB.

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Fluxos de tecidos foliares em papuã sob pastejo de bezerras de corte em diferentes frequências de suplementação

Cited by 5 publications

References 12 publications

Effect of herbage allowances on biomass flows in Italian ryegrass

Effect of herbage allowances on biomass flows in Italian ryegrass

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

Forage intake and performance of heifers fed rice bran on Alexandergrass pasture

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