Live weight gain from four nitrogen fertilized grasses grazed over the growing season in coastal South-East Queensland [beef cattle; Setaria sphacelata; Chloris gayana]
1989
Jones, R.M. | Evans, T.R. (Commonwealth Scientific and Industrial Research Organization, St Lucia (Australia). Div. of Tropical Crops and Pastures)
Animal production was measured over the growing season (October to June) from 4 grass pastures fertilized with 170 kg N per ha per year from 1982 to 1987. The pastures were grazed at 7 yearling steers per ha from mid spring until mid autumn and at 3.5 steers per ha thereafter until animals lost weight in winter. Animal production was similar from pastures of Setaria sphacelata cv. Kazungula and cv. Narok, Setaria sphacelata var. splendida CPI 15899, and Chloris gayana cv. Callide, with an average production over 6 years of c. 820 kg LWG per ha. There was much more variation in animal production between years than there was between the different grasses. There was a gradual invasion of Pennisetum clandestinum, particularly in plots of Callide rhodes grass which did not persist as well as the Setaria spp.
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