Características estruturais do pasto de capim-braquiária de acordo com a localização das fezes

Santos, Manoel Eduardo Rozalino; Fonseca, Dilermando Miranda da; Silva, Simone Pedro da; Carvalho, Victor Valério de; Pimentel, Róberson Machado; Albino, Ronan Lopes

doi:10.1590/s1516-35982010001000003

Cited by 3 publications

(3 citation statements)

References 11 publications

(17 reference statements)

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“…When compared with the sites close to the feces, the structure of the pasture in the local distant from them was characterized by lower stem mass, lower number of reproductive tillers and higher number of vegetative tillers of smaller size (Santos et al, 2011(Santos et al, , 2010b, which is indicative of better nutritive value (Santos et al, 2010c). These attributes may imply that the placement of the organs in the aerial part of the signalgrass at the local distant from feces was a predisposing factor to the consumption of cattle, which explains their higher defoliation rate.…”

Section: Resultsmentioning

confidence: 99%

“…It is also possible that cattle compensated the lower pasture height on the local distant from feces (Santos et al, 2010b), which limits the depth of the bite (Hodgson, 1990), with bites closer to the soil level. Thus, the defoliation intensity was greater (Figure 3).…”

Section: Resultsmentioning

confidence: 99%

“…Along with the morphogenesis evaluations (Santos et al, 2011) and pasture structure (Santos et al, 2010b), tiller defoliation patterns were assessed in sites of the pasture that initially represented average condition, i.e., target height of 25 cm. In the beginning of these evaluations, areas close to fresh feces were chosen, and probably, they had been recently placed on the pasture, in addition to areas distant from feces.…”

Section: Methodsmentioning

confidence: 99%

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Grazing patterns on signalgrass pasture according to location of cattle feces

et al. 2012

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-This study was conducted to evaluate the defoliation patterns on B. decumbens cv. Basilisk (signalgrass) tiller as a function of influence of feces deposited naturally by cattle. The signalgrass was managed with an average height of 25 cm, under continuous stocking and variable stocking rate. Interval and intensity of defoliation, grazing efficiency and forage loss were evaluated in two sites on pasture -one close and the other distant from feces. The completely randomized block design with three replications was adopted. The defoliation rate of the pasture site close to feces was 40% lower than at that distant from feces. This response pattern was similar to defoliation intensity of leaf blade. The leaf blade of the tiller close to feces also achieved lower de foliation (1.64) than that in the tiller distant from feces (3.97). The relative number of grazed leaf per tiller in the tillers distant from feces was approximately 185% higher than those close to feces. The grazing efficiency was lower in the local close to feces compared with that distant, unlike forage loss. The natural deposition of feces by cattle modifies the grazing and use patterns of B. decumbens under continuous stocking.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Grazing patterns on signalgrass pasture according to location of cattle feces

et al. 2012

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Herbage Mass, Herbage Rejection, and Chemical Composition of Signalgrass under Different Stocking Rates and Distances from Dung Pads

et al. 2012

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Nutrients from fecal return may improve herbage growth and chemical composition, but herbage rejection may occur around dung pads. Rejected herbage increases in maturity and might be rejected in future grazing cycles. The aim of this study was to determine the influence of dung pad on soil and herbage characteristics of signalgrass [Urochloa decumbens (Stapf) R. D. Webster (syn. Brachiaria decumbens Stapf.)] pastures managed under three stocking rates (1.9, 3.2, and 4.2 animal units (Alls) ha^''; 1 AU = 450 kg of cattle live weight). Herbage and soil responses were measured at different distances from the dung pad border (0 to 20, 20 to 40, and 40 to 60 cm). A rotational stocking was applied with 3 d of grazing and 32 or 67 d of resting for the dry and rainy seasons, respectively. Herbage mass increased near the dung pad by 40% compared to the surrounding areas but was not affected by stocking rate. Herbage rejection was greater near the dung pad and rejection was greater at lower stocking rate. Plants distant from the dung pad presented lower P concentration. Regardless of stocking rate, K, N, and P fecal and herbage concentrations were affected by the grazing cycle, and there was a higher nutrient concentration during the rainy season. Soil beneath dung pad had higher pH value (5.6 vs. 5.2), Mehlich-I P (22.4 vs. 12.5 g m-^), and K concentration (9 vs. 5 mol m"^) compared to soil from the surrounding areas. Grazing management practices should improve fecal distribution in pastures to maximize nutrient return via this pathway.

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Herbage accumulation dynamics in digit grass subjected to defoliation frequencies

Cruz

Sousa

Fagundes

et al. 2019

SCA

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This study was undertaken to examine the herbage accumulation dynamics and structural characteristics of digit grass subjected to different defoliation frequencies in the period of January 2015 to February 2016. Four defoliation frequencies [very high (25 cm), high (35 cm), medium (45 cm), and low (55 cm)] were evaluated in two periods of the year [greater insolation (September to March) and lesser insolation (April to August)]. The experiment was set up as a randomized-block design with four replicates. Overall, the decreasing defoliation frequencies increased the cutting interval; leaf area index; total-herbage, stem, and dead-herbage accumulation rates; and percentages of stems and dead herbage. This reduction in defoliation frequency also resulted in a lower leaf accumulation rate and percentage of leaves. In overall terms, digit grass showed higher total-herbage, leaf, and stem accumulation rates; percentages of stems and dead herbage; stem volume density; and tiller density in the period of greater insolation. In the period of lesser insolation, however, digit grass exhibited a lower dead-herbage accumulation rate and a lower percentage of dead herbage. Less frequent defoliations increase the herbage accumulation rates of digit grass, but result in a less desirable morphological composition.

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Características estruturais do pasto de capim-braquiária de acordo com a localização das fezes

Cited by 3 publications

References 11 publications

Grazing patterns on signalgrass pasture according to location of cattle feces

Grazing patterns on signalgrass pasture according to location of cattle feces

Herbage Mass, Herbage Rejection, and Chemical Composition of Signalgrass under Different Stocking Rates and Distances from Dung Pads

Herbage accumulation dynamics in digit grass subjected to defoliation frequencies

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