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Improved Management of Cattle Phosphorus Status Through Applied Physiology
註釋A research program investigated aspects of P nutrition in breeder cattle in circumstances where improved knowledge of P physiology and nutrition should lead to practical management manipulations for increased cost-effectiveness in northern Australian production systems. The project objectives were to (i) identify the constituents of old bones which are attractive specifically to P-deficient cattle so that these can be used as attractants in P supplements, (ii) determine the magnitude and diet x animal interactions affecting the deposition and mobilisation of body P reserves in breeder cattle in situations typical of northern Australia, and (iii) understand the physiological mechanisms controlling mobilization and deposition of body P reserves in breeder cattle. Also to use this knowledge to better manage P deficiency in breeders through improved estimation of current animal P supply from diet and body reserves and animal responses and by better diagnostic tools of P status.