Sanitization at different times after floor egg collection for hatchability, microbiological quality, and performance of broilers.

In this study, the effects of egg type and sanitization time on eggshell and yolk sac microbiological quality, hatchability, and broiler performance at 7 and 35 d of age were evaluated. A total of 3,440 eggs from a commercial flock Cobb500 were randomly assigned in a 2 × 2 factorial scheme, separated by the type of egg (clean nest or floor) and eggs sanitization at 30 or 120 min after collection, totaling 4 treatments. After hatching, 312 male chicks were randomly selected and distributed according to treatment.

Floor eggs: Hatchability, microbiological analysis, and effects of post-hatch use of ceftiofur on performance of broiler chicks.

The present study aimed to determine the effects of egg type (nest clean or floor eggs) on eggshell microbiological, hatching performance, chick quality, yolk sac microbiology, and the interaction between egg type and post-hatch use of ceftiofur on broiler performance at 7, 14, 21, 28 and 35 days. A total of 2500 fertile eggs were obtained from a commercial flock of Cobb Slow® broiler breeders. Half of the eggs were collected directly from the floor, and the other half were collected from the nests.