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SANTOS, V. R. V. dos; McNANUS, C.; PERIPOLLI, V.; TANURE, C. B.; LIMA, P. de M. T.; CORRÊA, P. S.; BRITO, D. L.; TORRES, S. E. F. de A.; LOUVANDINI, H.. |
The aim of this study was to evaluate the effect of three different grazing systems: isolated, alternate and simultaneous, on feed intake, performance and carcass characteristics of sheep. About 5.2 ha area of Tanzania grass (Panicum maximun Jacq cultivate Tanzania) was divided into 13 paddocks. This area was used as a stocking rate of two animal units (AU) per ha for 7 days? occupation and 21 days rest. A total number of 58 animals were used consisting of 12 heifers and 30 Santa Ines lambs with the addition of 16 adult ewes that were used to stabilize grazing pressure in the isolated system. The sheep were fed on 200 g per head per day of concentrate and cattle 2 kg per head per day. The parameters determined were the following: weekly weight (WW), total... |
Tipo: Artigo de periódico |
Palavras-chave: Tanzania grazing area; Simultaneous grazing systems; Grazing systems.; Carcaça; Sistema de pastejo; Carcass quality; Carcass weight; Megathyrsus maximus.. |
Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1082843 |
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FERNANDES, F. D.; BRAGA, G. J.; RAMOS, A. K. B.; JANK, L.; CARVALHO, M. A.; MACIEL, G. A.; KARIA, C. T.; FONSECA, C. E. L. da. |
Selection of superior forage genotypes is based on agronomic traits assayed in repeated measures. The questions are how repeatable the performance of individual genotypes is and how many harvests are needed to select the best genotypes. The objectives were to estimate repeatability coefficients of dry matter yield (DMY) and forage quality, their phenotypic stability and the number of harvests needed for an accurate selection. Two randomized complete block design experiments data with 24 genotypes each, undergoing 12 and 16 harvests, over a period of 2 and 3 years, respectively, were used. The DMY repeatability estimates ranged from 0.42 to 0.55, suggesting a low heritability. The mean numbers of repeated measures were 5 and 7 harvests for 0.80 and 0.85... |
Tipo: Artigo de periódico |
Palavras-chave: Repeated measures; Selection efficiency; Selection effectiveness; Medida repetida; Eficiência de seleção; Eficácia de seleção; Matéria seca; Pastagem; Panicum maximum; Pastejo; Genótipo.; Grazing; Megathyrsus maximus.; Cultivars. |
Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1077409 |
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