Phosphorus and beef production in northern Australia, 6. Dietary attributes and their relation to cattle growth. [Conference paper]
1990
McClean, R.W. | Winter, W.H. (Commonwealth Scientific and Industrial Research Organisation, Brisbane (Australia). Div. of Tropical Crops and Pastures) | Hendricksen, R.E. (Queensland Dept. of Primary Industries, Mareeba (Australia). Pasture Management Branch) | Coates, D.B. (Commonwealth Scientific and Industrial Research Organisation, Townsville (Australia). Div. of Tropical Crops and Pastures)
In 4 grazing experiments, during the growing season, P was shown to be the primary limiting nutrient. In general terms, fertilizer P increased the nutritive value of the diet at most sites by increasing dietary P levels, and also the legume content of the diet and hence dietary N and Ca concentrations. Liveweight gain was correlated to diet P but not diet N over all sites and seasons. The usefulness of dietary parameters was considered. It was concluded that in many situations the use of fistulated grazing cattle to obtain diet samples has enabled the derivation of estimates of diet nutritive value which could be related to cattle production over an interval of time.
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