Farinha de alga calcária na dieta de codornas japonesas e seus efeitos na conservação dos ovos

Abstract

The objective of this study was to evaluate the conservation of quail eggs fed with levels of inclusion of calcareous seaweed meal to replace calcitic limestone in the diet, in different storage periods. The experiment was carried out in the cotton sector of the Federal University of Grande Dourados. 140 Japanese quails (Coturnix japônica) were used, distributed in a completely randomized design, with four treatments (T1 0%, T2 10%, T3 20% and T4 30%), seven replicates with five birds each. The egg quality evaluations were carried out in periods of 0, 7, 14 and 21 days of storage, in a natural environment, with 3 eggs per repetition. The variables analyzed were egg weight, yolk color, albumen and yolk height, yolk weight and percentage, albumen and shell, shell thickness, yolk index, yolk diameter, specific gravity and Haugh unit. There was no effect of the interaction between the factors storage time and inclusion of limestone algae (p> 0.05). There was an increasing linear effect on the weight and thickness of the shell in relation to the levels of limestone algae inclusion. There was an individual effect of egg storage time (p> 0.05) on parameters egg weight, yolk color, albumen and yolk height, yolk weight and percentage, albumen, yolk index, yolk diameter, specific gravity and Haugh drive. The longer the storage time, the greater the detriment to egg quality. The inclusion of up to 30% of calcareous algae to replace calcitic limestone in the Japanese quail diet improves the weight and thickness of the shell, but does not influence egg conservation.