Poultry Studies
2014, Vol 11, Num, 2 (Pages: 005-009)
Effects of Irradiation with UV (Ultraviolet) at Different Wave Lenght to Broiler Hatching Eggs from Different Genotype on Hatchability and Performance Characteristics
2 Selçuk Üniversitesi Ziraat Fakültesi Zootekni Bölümü, Konya - This research is carried out to determine the effects of 5 minutes UV irradiation with different wave lengths (UV-A, UV-B and UV-C) at the beginning of the incubation on embryo development, hatchability and post hatch performance. According to the results; UV treatments did not significantly affect hatching results. The hatchability were determined as 77.0, 82.6, 78.9 and 79.3 %, in K, UV-A, UV-B and UV-C groups, respectively. Mean live weights (LW) at first day, 1, 2, 3, 4, 5 and 6 weeks of age were determined as 45.64, 177.8, 358.7, 794.0, 1329.6 and 2286 g, respectively. At the end of the 6 weeks, difference between genotypes for LW was found significantly different (P<0.05). Cobb 500 genotype have 93.3 g higher LW than those of Ross 308. Live weights of chicks at 3, 4 and 5 weeks of age were significantly affected by UV treatments (P<0.05). There was an interaction between genotype x UV on hatching weight and first week live weight (P<0.05). Mean cumulative feed consumption (FC) in 1-6 weeks were determined as 143.25, 477.25, 1207.00, 2015.50, 3092.50, and 4116.50 g, respectively. As a general effect, it is determined that genotype and UV treatments not affected FC significantly. The FC was affected significantly (P<0.01) by genotype x UV interaction in first week. In this week, while no significant differences were found between UV treatments in Cobb 500 groups, there were significant (P<0.05) differences in Ross 308 groups. Cumulative feed conversion ratio (FCR) in 1-6 weeks were determined as 0.81, 1.34, 1.53, 1.60, 1.74 and 1.80, respectively. At 6 weeks of age, significantly differences were found on FCR between genotypes (P<0.05). Effects of UV treatments have been found significantly important (P<0.05), as well. The FCR of Cobb 500 group was found lower than those of Ross 308. Cobb 500 genotype, with mixed sex type, has better FCR than those of Ross 308. Effects of UV treatments on FCR in 3th (P<0.05) and 4th (P<0.05) weeks were found significantly different. Keywords : Broiler, hatchery, performance, UV irradiation, Cobb, Ross
