Oat, triticale and rye in mixture with ryegrass: 2. Animal productivity and economic return

[摘要] - The experiment was conducted to evaluate the animal production and the economic result of the mixtures of oat + ryegrass (MOR), triticale + ryegrass (MTR), rye + ryegrass (MRR) in continuous grazing. Beef heifers with seven months of age and initial 140 kg LW were used. The sowing was broadcast at 04/12/96, using 85 kg/ha of oat, 170 kg/ha of triticale, 140 kg/ha of rye and 30 kg/ha of ryegrass, in the respective mixtures. The area was fertilized with 200 kg/ha of 05-20-20 and the nitrogen fertilization was of 220 kg/ha of nitrogen. The grazing period was from 05/21/96 to 11/19/96 in the MOR and MRR and from 06/04/96 to 11/19/96 in the MTR. The total dry matter (DM) yield was similar among the mixtures, 9,715, 9,752 and 9,770 kg DM/ha, respectively. There was an interaction between treatment and grazing period for average daily weight gain and stocking rate. The live weight gain/ha was 802.7 kg for MTR, 753.9 kg for MRR and 726.3 kg for MOR. The net income was R$ 224,76 for MTA, being 27.52 and 15.58% superior, in relation to MOR and MRR, respectively.

[学科分类] 兽医学

[关键词] stocking rate;cost;average daily weight gain;cultivated pasture;grazing;net income     IntroduçãoA principal fonte de forragem para a pecuária de corte no Sul do Brasil é o campo nativo;que é composto basicamente por espécies de elevado crescimento estival;sendo que no outono-inverno ocorre a paralisação do crescimento e queda na qualidade da forragem da pastagem nativa