Effect of In-ovo feeding of amino acids, albumin and dextrose on growth performance, blood parameters and carcass characteristics in broilers

The aim of this study was to investigate the effects of in ovo injection of few nutrients on growth performance, some blood metabolites and carcass characteristics of broilers to 14 days of age. Three hundred and sixty fertile eggs assigned to 6 groups (including, 1: non-injected (or control 1), 2,3,4,5 and 6: injected into the amnion with 0.7 ml distilled water (control 2), blend of amino acids, albumin 20%, dextrose 20% and dextrose 10%, respectively) in a complete randomized design with 4 replicates of 15 eggs in each replicate. Injections were done into amnion by 23- gauge needle on 17.5 d of incubation. The results showed that in ovo injection of albumin increased body weight in the first day of hatch in comparison to control treatments. The relative weight of yolk sac was higher by the injection of albumin solution in comparison to control treatments on day of hatch. Chicks under control treatments also showed more blood's cholesterol and LDL at this age. The relative weight of liver in chicks hatched from eggs injected with distilled water was significantly higher than other treatments. Finally, referring to our results, it seems that in ovo injection of nutrients, especially albumin can be useful to improve chick's performance.