Effect of quantitative feed restriction and dietary protein on egg weight and egg mass of dwarf broiler dams
PRACHI GUHA AND J. K. BHARDWAJ
Department of Poultry Science
College of Veterinary Science and Animal husbandry
J.N.K.V.V, Jabalpu r- 482004
An experiment was conducted to assess the effect of variable feed restriction and dietary protein on egg weight and egg mass taking 192 dwarf broiler breeder dams from 25-44 weeks age. The data was recorded on four weekly period basis. There were four feed restriction levels viz. 0% (A 0), 10% (A 1), 20% (A 2) and 30% (A 3) and four dietary protein levels viz. 16% (B 0), 17% (B 1), 18% (B 2) and 19% (B 3). Throughout the experimental period energy level was maintained at 2700 kcal ME/kg diet for all dietary treatments. Egg weight and egg mass of dwarf broiler dams were highly significantly affected by feed restriction and dietary protein. Highest egg weight 52.2 g was seen in A 1 and lowest egg weight in A 3 (50.9) group of birds. The overall eggs mass was highest in A 1 group (4929 g) followed by A 0 (4751 g), A 2 (4451 g) and A 3 (4162 g). The differences among these feed groups were highly significant to each other. Egg weight and egg mass both declined as the feed restriction imposed over 10%. On overall basis, A 1 resulted in 170 g more egg mass than A 0. As the protein level of diet increased, the egg weight and egg mass also increased. On overall basis average egg weights measured were 51.1, 51.3, 51.8 and 50.9g, whereas egg mass was 4353, 4485, 4648 and 4799g, respectively for 16 (B 0), 17 (B 1), 18 (B 2) and 19 (B 3) groups, respectively. Results indicated that higher feed restriction causes reduction whereas higher protein causes increase in egg weight and egg mass or in other words feed restriction had inverse whereas dietary protein had direct relationship with egg weight and egg mass traits.