Poultry feed supplements
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Bonemeal, or products derived from bone, are the orthodox source of additional phosphorus where this is needed in livestock rations. Supplies of bones are limited, however, and there is an urgent need for alternative sources of phosphorus suitable for inclusion in compound feeding stuffs. Poultry farmers in Western Australia have had recurrent difficulty in obtaining regular supplies of bonemeal or boneflour. Dairy farmers were faced with the same problem but this now being overcome by the use of ground rock phosphate obtained from Christmas Island (Snook 1955).
Snook, L. C.
"The use of rock phosphate from Christmas Island in poultry rations,"
Journal of the Department of Agriculture, Western Australia, Series 3: Vol. 7
, Article 13.
Available at: https://researchlibrary.agric.wa.gov.au/journal_agriculture3/vol7/iss5/13