<b>Effects of the enzyme complex supplementation on the performance and egg quality of laying hens</b> - DOI: 10.4025/actascianimsci.v29i2.221

Abstract

The present study aimed to evaluate the effects of a commercial enzyme complex on the performance and egg quality of commercial laying hens. A total of 336 29-week old Hyline W36 layers were allocated to a completely randomized experimental design with seven treatments and six replications of eight birds each. The treatments consisted of the basal diet supplemented with inclusion of (500 or 400 ppm), overestimating the percentages of protein, ME and amino acids of the soybean meal by 5:5:5, 7:7:7 and 7:7:9, respectively. The studied variables were: feed intake (g ^{bird-1 day- 1}), feed:egg (kg ^feed-1 egg ^dozen-1), egg weight (g), egg laying percentage (hen ^day-1) specific gravity (g ^ml-1), Haugh Unit, color of the egg yolk, total solids percentage (%), egg yolk percentage, albumen and eggshell (%), eggshell thickness (mm) and chemical composition of hen manure. The inclusion of enzyme complex in the diet resulted in similar productive performance and egg quality compared to the control diet.