Discipline: Veterinary Medicine
A total of 400 straight-run broiler chicks were used to determine and compare the effect of flavophospholipol on the production performance of class A (good quality) and class B (inferior quality) chicks raised under conditions similar to a multi-age commercial broiler operation. Two hundred of the chicks were classified according to hatchery standard as class A, i.e., with body weight of over 35g at day-old, while the remaining birds with body weight of 35 g and below were classified as Class B. The day-old chicks were weighed and randomly distributed to four treatments in a 2 x 2 factorial arrangement following a completely randomized block design. Results showed no significant interaction between chick class and inclusion of flavophospholipol in the broiler diets on feed consumption, body weight gain, feed efficiency, livability and dressing percentage. The quality of day-old chicks, as a single factor, significantly influenced body weight and weight gain. Class A chicks had higher initial body weight and body weight gain than class B chicks in all stages. The class of chicks, however, had no significant effect on feed consumption, feed efficiency and livability but significantly affected dressing percentage of finished broilers. Irrespective of the class of chicks, supplementation of broiler diets with flavophospholipol consistently and significantly increased body weight gain but improved feed efficiency only at 28 days of age. Inclusion of flavophospholipol in the diets significantly decreased mortality and increased the income over feed and chick cost (IOFCC) of both class A and B broiler chick.