Authors: L.T. Egbeyale, S.S. Abiola, A.O. Fanimo, O.O.Oduguwa, O. M. Sogunle, O.S. Sowande
Nigerian Society for Animal Production Nig. J. Anim. Prod. 2010 37(1) 25-33
Abstract
This stud was conducted to determine the effect of three disinfectants on the microbes and hatchability of broiler eggs. One hundred and ninety-two medium-sized hatchable broiler eggs were divided into four groups with three replications of sixteen eggs each. Each group of the eggs VIas assigned to each of the follo« ing treatments: untreated. NaOCI, HP2 and KMnO .:HCHO combination (1 :2). The eggs were incubated for 21 days. Data were analyzed using one-way analysis of variance in a completely randomized design. The bacteria isolated were Escherichia coli (225-390cfu:ml) Pseudomonas aerugmosa (78-13 9cfu/ml), St aphvlococcus aureus and Proteus nnrubilts (210-3 b8cfu 111). Salmonella spp (258-313cfu’ml) and fungi (63-10 l cfu/rnl). Significant (P<0.05) variation was observed in the population of micro flora species on egg shell. Eschenchia coli were the pre-dominant bacteria recovered from all the samples before treatment. Effect of dismfectants on the microorganisms varied significantly (P<0.05) with KMnO; + formaldehyde combination having the highest (57.36%) effect on salmonella spp. Similar effect of NaOCI and H2O2 was observed on S. aureus and protein mirabilis. E coli. Paeruginosa and fungi. Eggs treated w irh KMnO – formaldehyde combination had the least Significant (P<0.05) incubation weight losses value ( 14.63%) while eggs treated H2O2, had the highest value (17.00%). The results further showed that hatchability, chick hatching weight and early embryonic mortality were not significantly (P>0.05) affected by the treatment unlike the late embryonic mortality which was significant (P <0.05). Although, KMnO +formaldehyde combination IS commonly used In the hatchery, in this experiment NaOCI and H2O2 compared with formaldhyde as hatchery disinfectants without adversely affecting hatching potentials.