produção animal e valor nutritivo da forragem de pastagem de coastcross consorciada com amendoim forrageiro animal production and nutritive value of a coastcross pasture mixed with forage peanut

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ID: 137567
2010
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Abstract
Neste estudo foram utilizados os tratamentos: coastcross + amendoim forrageiro + 200kg/ha de N; coastcross + amendoim forrageiro + 100kg/ha de N; coastcross + 200kg/ha de N e coastcross + amendoim forrageiro (parcelas) no inverno, primavera, verão e outono (sub parcelas), delineados em blocos ao acaso. Novilhas foram manejadas sob lotação contínua e taxa de lotação variável em pastagem mantida a 17cm de altura. Amostras foram coletadas a cada 28 dias para determinar o valor nutritivo da forragem. Foram avaliados: ganho médio diário (GMD), ganho de peso vivo (GPV), taxa de lotação (TL) e número de animais dia (NAD). Quanto ao valor nutritivo da forragem, os piores resultados ocorreram nas pastagens sem adubação, 16,9% e 6,0% de PB de folha e colmo, respectivamente, e 70,1 % de FDN de folha. Na primavera e no verão, o GMD foi mais alto, 0,518 e 0,515kg/animal do que no inverno e outono, 0,396 e 0,293kg/animal, respectivamente. A TL foi superior nas pastagens que receberam a maior dose de nitrogênio, 5,38UA/ha em média, e no verão, 6,81UA/ha. O GPV foi mais elevado nas áreas com adubação, 1341kg de PV/ha, em relação aos pastos não adubados, 735kg/ha.
In this study, the following treatments were used: coastcross + forage peanut + 200kg/ha of N; coastcross + forage peanut + 100kg/ha of N; coastcross + 200kg/ha of N and coastcross + forage peanut (plots) in the winter, spring, summer, and autumn (subplots), designed in randomized blocks. Heifers were managed under continuous stocking and variable stocking rate on pasture maintained at 17cm height. Samples were collected every 28 days determining the nutritional value of forage. Average daily gain (ADG), weight gain (WG), stocking rate (SR), and number of animals/day (NAD) were evaluated. As for forage nutritional value, the worst results were found in pasture without fertilization, 16.9% and 6.0% CP of leaf and stem, respectively, and 70.1% NDF in leaves. In the spring and summer, animals had a higher ADG, 0.518 and 0.515kg/animal, than 0.396 and 0.293kg/animal in the winter and autumn, respectively. SR was higher in pastures that received higher nitrogen doses, 5.38AU/ha in average; and in the summer, 6.81AU/ha. LWG was higher in fertilized areas, 1,341kg LW/ha, than in not fertilized pastures, 735kg/ha.
Reference Key
barbero2010arquivoproduo Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;L.M. Barbero;U. Cecato;S.M.B. Lugão;J.A.N. Gomes;V.A. Limão;J.J.S. Abrahão;C.F.C. Roma
Journal Environmental research
Year 2010
DOI
10.1590/S0102-09352010000300021
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352010000300021
Keywords
beef cattle

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