Mineral composition of poultry manure in South Africa with reference to the Farm Feed Act (Short communication)

Author: J.B.J. van Ryssen, S. van Malsen and A.A. Verbeek
Year: 1993
Issue: 2
Volume: 23
Page: 54 - 57

The mineral composition of poultry manure and litter from poultry enterprises throughout South Africa was determined. The manure contained high concentrations of macro and micro minerals. Ash content levels in more than 40% of the Breeder and Pullet litter and 80% of the Layer samples were higher than levels stipulated as acceptable for the Farm Feed Act of South Africa (Act 36 of 1947). More than 54% of the Pullet and Layer samples and 80% of the Broiler and Breeder samples contained less P than stipulated by law. The Cu concentration of most of the samples was below the legal limit of < 50 mg/kg. Only 3.8% of the Broiler, 17.8% of the Pullet, 4.5% of the Layer and 1.5% of the Breeder samples contained an acceptable concentration of minerals to qualify for registration as an animal feed. It is suggested that the minimum legal levels for P should be reduced and the maximum limits for Na should be increased.


Keywords: Legal requirements, mineral composition, poultry excreta, ruminants
Read article