Akademik Veri Yönetim Sistemi
VETERINARY MEDICINE AND SCIENCE, sa.3, 2024 (SCI-Expanded)
BackgroundGenetic selection applied to broilers results in fast growth and an increase in meat yield. However, this situation causes welfare problems in broilers.ObjectivesThe aim of this study is to determine the weekly changes in the tibia characteristics in broilers raised on their own commercial diets.MethodsIn the study, 168 (84 female and 84 male) slow-growing (Hubbard-Isa Red JA) and 168 (84 female and 84 male) fast-growing (Ross-308) day-old broiler chicks were used. Six broilers from each genotype and sex group were weighed weekly and slaughtered to determine the tibia properties during the 10-week fattening period.ResultsFast-growing broilers had higher tibia weight and longer length, diaphysis diameter and medullary canal diameter than those of slow-growing broilers at the same age. In fast-growing genotypes, the cortical index was low only in the 2nd week, and Robusticity and Seedor indices were observed to be better throughout the whole fattening. The ash content of the total tibia in the fast-growing broilers was higher in all of the examined weeks except the 4th week and the 9th week of fattening than that in the slow-growing broilers. Although the amount of ash per unit body weight in the 1st week of fattening was higher in fast-growing broilers, this situation reversed after the 4th week. The level of all minerals examined in total tibia weight is high in fast-growing broilers, and they differed according to the fattening period.ConclusionsWhen comparing tibia characteristics of two different genotypes fed their own commercial diets, the tibia structure was found to be stronger in fast-growing broilers compared to other genotypes at the same age, but slow-growing broilers were more prominent in terms of body weight. It was observed that the mineral density was higher in male broilers, except in the 1st week. Tibia structure is strong in fast-growing broilers, but fast-growing broilers come to the fore when compared to body weight. In general, there is a decrease in the mineral level in the tibia due to the decrease in tibia weight after the 8th week of the fattening in fast-growing broilers and after the 9th week of the fattening in slow-growing broilers. Skeletal problems may occur easily in broilers during this period due to the increased body weight. image