ArticlePeerJ2025
Utilization of soft pistachio hulls in Japanese quail diets for enhanced egg quality and yolk pigmentation.
Article in PeerJ, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Japanese quail ( Methods: Ninety-six female quails, seven weeks old age, were randomly distributed to four dietary groups (24 birds each; three replicates of eight birds). The treatment diets were based on a standard layer feed, with graded PH inclusion of 0%, 2%, 4%, and 6%, administered over a for five-week period. Parameters measured included live weight, feed intake, egg production rate, egg weight, feed conversion ratio, and a range of egg quality indicators, such as shape index, shell thickness, Haugh unit, albumen and yolk indices, and yolk color score, assessed at weeks 7 and 11. Results: Final live weight followed a cubic trend ( Conclusion: Pistachio hulls can be incorporated into laying quail diets up to 6% without adverse effects on egg quality. The 4% inclusion level appears optimal for egg shape and pruductivity, while 6% maximizes yolk coloration. Nonetheless, the observed decline in feed efficiency at some levels suggests that careful ration balancing is essential. The use of PH represents a promising route for upcycling agro-residues into functional feed components with added economic and nutritional value.
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