Abstract
The effects of substitution of poultry offal meal (POM) for soybean meal (SBM) and the effect of supplementation of POM by a mixture of solid state fermentation enzymes (SSF) and Lipase on egg quality traits of Japanese quails were studied in two experiments. Unsexed Japanese quails (13 days old; N=200) were randomly assigned to twenty groups of ten birds for each experiment. In experiment 1, POM was incorporated at 0, 2.5, 5, 7.5 and 10% in the diets to assess the maximum inclusion level of POM. In Experiment 2, the egg quality of Japanese quails fed diets containing 0, 5 and 10% POM was investigated. Enzyme effect was tested at 5 and 10% POM. The major egg quality traits and sensory qualities were assessed. Feeding POM at 10% rate significantly (P Key words: Dietary enzymes; Egg quality; Japanese quails; Poultry offal meal; Soybean meal DOI: 10.4038/tare.v12i2.2797 Tropical Agricultural Research & Extension 12(2): 2009 pp.89-96
Highlights
Poor egg quality results significant losses annually to the world egg industry
The highest value for mean egg weight was obtained with 2.5% poultry offal meal (POM) diet which differd significantly from those with 5 (P=0.00), 7.5 (P=0.01) and 10% (P
The average egg weight at 10% POM was significantly lower compared to those obtained with the control (P=0.01) and 2.5% (P
Summary
Poor egg quality results significant losses annually to the world egg industry. Approximately, 7-8% of total amounts of the eggs are broken during the transfer of eggs from breeders to consumers. In Sri Lanka, commercial broiler and layer rations are used for feeding Japanese quails which do not satisfy their nutritional requirements. These poultry rations consists of soybean meal (SBM) as the main source of protein which is mainly imported leading to drain foreign exchange reserves in Sri Lanka. Poultry offal meal (POM) is the most common by-product meal derived from poultry processing in Sri Lanka (Samarasinghe 2007) Recycling of such non conventional, cheap feed ingredients and research to evaluate them generally focus on replacing conventional, expensive protein supplements. The study reported was designed to investigate the effects of POM as a substitute for dietary SBM with or without enzymes supplements on egg quality traits of Japanese quails
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