Vol. 10, Special Issue 12 (2021)

The current study was aimed to ascertain the effect of in ovo injection of nanoparticles of zinc, copper and chromium on the hatchability and post hatch performance of broiler chicks. Four hundred fertile broiler eggs from Cobb 430 flock were randomly divided into five treatments (80 eggs each) groups. First treatment was without injection (control), second was injected with 0.5 ml normal saline, third, fourth and fifth treatment eggs were injected with 40, 12 and 0.5 µg/egg of nano zinc, nano copper and nano chromium respectively. After hatching, 240 day old straight run broiler chicks were allocated to five treatment groups each consisting of four replicates with twelve chicks each and all birds were fed with broiler starter diet (1-21 days) and finisher diet (22-42 days) as per NRC (1994) in ovo feeding of nano forms of zinc, copper and chromium at 18th day of incubation through amniotic route does not harm the developing embryo and does not affect hatchability. No significant variation (P>0.05) existed in the egg weight and hatchability per cent between the treatments. Significant variation (P>0.05) found in chick weight and ratio of chicks weight to egg weight% between treatment and control group. In ovo supplementation of zinc, copper and chromium increased the weight (% of live weight) of small intestine on seventh day of hatch.