Forage yield in pastures with bermuda grass mixed with different legumes
DOI:
https://doi.org/10.4025/actascianimsci.v38i3.31114Keywords:
Cynodon, lactating cows, stocking rate, Trifolium vesiculosum, Vicia sativa.Abstract
Three grazing systems with Coastcross-1 bermuda grass (CC) + 100 kg N ha-1 year-1 + common vetch; CC + 100 kg N ha-1 year-1 + arrowleaf clover; and CC + 200 kg N ha-1 year-1 were evaluated. Thirteen grazing cycles were performed during the experimental period (313 days), with two, five, four and two cycles respectively in winter, spring, summer and fall. Lactating Holstein cows were used in the evaluation. Daily accumulation rate, forage production, rate of forage disappearance, agronomic intake, grazing efficiency, herbage allowance and stocking rate were evaluated. Mean rates of forage yield and stocking rate were 20.8; 17.6 and 19.7 t DM ha-1 and 7.0; 6.8 to 6.8 animal units ha-1 day-1 for the respective forage systems. The mixture Coastcross-1 plus common vetch, fertilized with 100 kg N ha-1 year-1 and Coastcross-1 fertilized with 200 kg N ha-1 year-1 provided greater productivity and better distribution of forage throughout the seasons.
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