Forage intake by supplemented lambs on pearl millet pasture/Consumo de forragem por cordeiras suplementadas em pastagem de milheto
This research evaluated the influence of different levels of supplement (0.0; 0.5; 1.0 and 1.5% in relation to the live weight (LW)) on the forage intake of beef lambs, in Pearl millet (Pennisetum americanum (L.) Leeke) pasture. The forage intake was conditioned by the levels of supplement only at t...
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Veröffentlicht in: | Ciência rural 2009-03, Vol.39 (2), p.509 |
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Format: | Artikel |
Sprache: | por |
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Zusammenfassung: | This research evaluated the influence of different levels of supplement (0.0; 0.5; 1.0 and 1.5% in relation to the live weight (LW)) on the forage intake of beef lambs, in Pearl millet (Pennisetum americanum (L.) Leeke) pasture. The forage intake was conditioned by the levels of supplement only at the beginning of the pasture utilization (days 1-21), with maximum ingestion of dry matter when lambs received supplement at the ratio of 0.84% of the LW. The influence of the levels of supplement on the daily weight gain and live weight gain was observed only in the half and in the end of the cycle of the pasture (days 22-64).The intake and performance of lambs in Pearl millet are more dependent on the phenological stage of the pasture rather than the level of supplement received. Key words: chromic oxide, Ile de France x Texel, indigestible neutral detergent fiber, Pennisetum americanum. Este trabalho foi conduzido para avaliar a influencia de niveis de suplemento (0,0; 0,5; 1,0 e 1,5% em relacao ao peso vivo (PV)) sobre o consumo de forragem por cordeiras de racas de corte, em pastagem de milheto (Pennisetum americanum (L.) Leeke). O consumo de forragem foi condicionado pelos niveis de suplemento somente no inicio da utilizacao da pastagem (dias um-21) e a maxima ingestao de materia seca ocorreu quando as cordeiras receberam suplemento na proporcao de 0,84% do PV. A acao do suplemento sobre o ganho diario medio (GDM) e o ganho de peso vivo (GPV) foi observada somente na metade e no final do ciclo do pasto (dias 22-64). O consumo e o desempenho de cordeiras em pastagem de milheto mostram maior dependencia do estadio fenologico da pastagem do que do recebimento de suplemento. Palavras-chave: fibra em detergente neutro indigestivel, Ile de France x Texel, oxido de cromo, Pennisetum americanum. |
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ISSN: | 0103-8478 |