Tarbiat Modares University, Iran
Posters & Accepted Abstracts: J Veterinar Sci Techno
A 49-day study was conducted to evaluate the performance parameters and susceptibility of different commercial broilers hybrid (B, A, C) to tibial dyschonderoplasia (TD). Total of 1440 1-day-old chicks were attributed to 6 experimental groups and each sex of hybrids was represented by four pens of 60 broilers each. Incidence of tibial dyschondroplasia disorder by bone mineral density (BMD) method results, showed significant effect among hybrid at 28 and 49 days of age (P├ó┬?┬Ą0.05), but the sex and reciprocal sex and strain effect were not effective on appearance of this disorder and its related physiological parameters. Whereupon the prevalence of TD in hybrid A was higher than hybrid B and C. Results showed that hybrid and sex had no significantly effect on total food consumption (P>0.05). A significant difference was observed in daily weight and food conversion coefficient among hybrids and gender (P<0.01), as, hybrid C showed the highest body weight gain, compared to other hybrids over the test period.
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