El artículo tiene como objetivo evaluar la respuesta productiva de las aves cuando se alimentan con harina camote en lugar maíz. experimento realizó campo dos propiedades rurales certificación orgánica región Londrina-PR. Se utilizaron 48 ponedoras raza mixta roja. evaluaron los parámetros producción, estándares calidad externa e interna huevos durante 4 ciclos 21 días. Para producción tasa pos...

This study investigated the potential effects of egg quality indices at 95% confidence level in order to minimize quality loss during different storage conditions. The chicken and quail eggs’ quality indices including weight, albumen index, yolk index, Haugh index in fresh eggs as well as after storing in moist sawdust, oil, and refrigerator were measured for six weeks. The results revealed tha...

in the egg shells when the eggs were studied in UV-light (Fig. 1). Control eggs did not fluoresce. The concentration of oxytetracycline in the egg shell, albumen, and yolk was measured by UV-absorption spectrofluorometry (Hayes and DuBuy, 1964). Oxytetracycline was deposited mainly in the shell (0.182 ± 0.028 iig./gm., mean ± SD), and albumen (0.190 ± 0.030 !*g./gm.) whereas the yolk contained ...

Eggshell coating is a common practice used to improve the shelf-life of table eggs while mineral oils have been widely utilized as an effective material. Hik (Lannea coromandelica) and Mango (Mangifera indica) are tropical trees grown in dry zone Sri Lanka their wax has film-forming properties. However, information on using surface material egg quality attributes scarce yet be elucidated. There...

Phenotypic plasticity and phenotypic stability are major components of the adaptive evolution of organisms to environmental variation. The invariant two-egg clutch size of Eudyptes penguins has recently been proposed to be a unique example of a maladaptive phenotypic stability, while their egg mass is a plastic trait. We tested whether this phenotypic plasticity during reproduction might result...