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Dynamics of production and forage utilization on elephant grass pastures managed with different post-grazing heights R. Bras. Zootec.
Sousa,Braulio Maia de Lana; Nascimento Júnior,Domicio do; Monteiro,Hélida Christhine de Freitas; Fonseca,Dilermando Miranda da.
This study was conducted to evaluate the daily production of forage and its morphological components, as well as the potential of forage utilization in pastures of Pennisetum purpureum cv. Napier managed with three post-grazing heights (30, 50 and 70 cm). Two experiments were carried out: one from February to May 2009 and another from December 2009 to May 2010, characterizing months of summer and fall. The experimental design was of completely randomized blocks with three replicates. The grazing was performed by crossbred heifers of approximately 270 kg body weight, when the sward intercepted 95% of the incoming light. In both experiments, the pastures managed with post-grazing height of 30 cm, in the summer months (December to March), presented lower...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Light interception; Pasture management; Pasture structure; Pennisetum purpureum.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000800006
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Grazing ecology of female lambs on Italian ryegrass plus red clover pasture under different defoliation intensities R. Bras. Zootec.
Glienke,Carine Lisete; Rocha,Marta Gomes da; Camargo,Daniele Gindri; Pötter,Luciana; Confortin,Anna Carolina Cerato; Costa,Vagner Guasso da.
The relationship between pasture dynamics and ingestive behavior of female lambs was studied on Italian ryegrass (Lolium multiflorum Lam.) plus red clover (Trifolium pratense L.) mixture under a range of defoliation intensities. Rotational grazing was used and the grazing interval was determined by the thermal sum of 313 degree days. The initial pre-grazing canopy height disappearance values were 65 (very high), 58 (high), 47 (medium) and 37% (low). The sward vertical structure was similar among defoliation intensities. The forage allowance decreased linearly as defoliation intensities increased, with 0.35 bite/minute reduction for each 1% increase in forage allowance. The bite rate and number of bites/feeding station decreased with reduced contribution of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bite rate; Feeding stations; Ingestive behavior; Lolium multiflorum; Pasture structure; Trifolium pratense.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000100007
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