Effect of superphosphate application on the phosphorus status of breeding cattle grazing Townsville stylo based pastures in northern Queensland

Loxton, I. D. and Murphy, G. M. and Toleman, M. A. (1983) Effect of superphosphate application on the phosphorus status of breeding cattle grazing Townsville stylo based pastures in northern Queensland. Australian Journal of Experimental Agriculture and Animal Husbandry, 23 (123). pp. 340-347. ISSN 0045-060X

Abstract

The performance of Brahman crossbred cows grazing annual grass plus Townsville stylo (Stylosanthes humils) pasture with or without superphosphate fertilizer was monitored over a two year period. The animals were introduced to the experimental areas as yearling helfers and remained until weaning of their first calf. Levels of phosphorus In rib bone varied between 145 and 172 mg/ml. At weanlng, levels were higher on the fertilized than on the unfertilized pasture (172 vs. 157 mg/ml). Calcium levels in rib bone varied between 329 and 362 rng/ml and paralleled bone phosphorus levels. Pasture nitrogen levels were similar on both pastures but phosphorus levels were higher on the fertilized area. Faecal analyses reflected this same pattern with faecal nitrogen levels being similar on both pastures, and faecal phosphorus levels higher on the fertilized pasture. Liveweight changes of cows and calf weaning weights were greater in groups grazing the fertilized pasture. It is hypothesized that this superior performance is a function of increased feed intake resulting from increased phosphorus intake on the fertilized area although the possible contribution of sulfur cannot be overlooked.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Author version not held. Published version cannot be displayed. See Publisher's link to published version.
Depositing User: Mrs Rae Jones
Faculty / Department / School: Historic - Faculty of Sciences - Department of Maths and Computing
Date Deposited: 30 Sep 2010 00:25
Last Modified: 25 Nov 2013 04:54
Uncontrolled Keywords: brahman breed; Townsville; superphosphate; phosphorus; breeding cattle
Fields of Research (FOR2008): 05 Environmental Sciences > 0503 Soil Sciences > 050304 Soil Chemistry (excl. Carbon Sequestration Science)
07 Agricultural and Veterinary Sciences > 0799 Other Agricultural and Veterinary Sciences > 079902 Fertilisers and Agrochemicals (incl. Application)
07 Agricultural and Veterinary Sciences > 0702 Animal Production > 070201 Animal Breeding
Socio-Economic Objective (SEO2008): B Economic Development > 83 Animal Production and Animal Primary Products > 8303 Livestock Raising > 830301 Beef Cattle
URI: http://eprints.usq.edu.au/id/eprint/5272

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