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Showing 2 results for Dereli Fidan
Volume 17, Issue 5 (9-2015)
Abstract
The aim of this study was to investigate the effects of preslaughter shackling durations on some blood parameters, breast and thigh meat quality traits, and muscle metabolites in broilers. The effects of shackling were determined in a group of Ross 308 broilers (240 birds) aged 42 days. Four shackling treatments were used in experimental tests: shackling of broilers for 10 (Group G10; as control), 30 (G30), 60 (G60), and 120 seconds (G120). Results showed that corticosterone (CORT) level (2314.79 pg ml-1) at 120 seconds shackling group increased (P< 0.01). Results indicated that kinase (CK) activity was the highest (2265.69 U I-1) in the 120 seconds shackling group while it was the lowest (1970.64 U I-1) in 10 s group according to the shackling duration (P< 0.05). The breast meat redness value increased due to increase in shackling duration (P< 0.05). It was revealed that shackling duration had decreased breast muscle glycogen level in all treatment groups (P< 0.001). Conversely, breast lactate level increased according to increase in shackling duration (P< 0.05). It was revealed that there was a negative relationship (r= -0.466) between breast meat ultimate pH and cooking loss (CL) value in male broilers (P< 0.01). These results indicated that the preslaughter shackling procedure might be a considerably stressful procedure for broilers, particularly exceeding 60 s. This study suggested that broilers could be at disadvantage due to more struggle during long duration shackling and accelerated postmortem glycolysis, which is detrimental to the quality of breast meat.
Volume 23, Issue 3 (5-2021)
Abstract
The study was aimed at assessing the leg health variables (footpad dermatitis, hock burn, tibial dyschondroplasia, gait score), tarsometatarsus asymmetry, and physical properties of tibiatarsus of broilers reared with perch application and different litter thicknesses. A total of 459 one-day old Ross-308 broiler chicks were allocated into 27 pens, each containing 17 chicks, in a 3 (perch treatments)x 3 (litter treatments) experimental design with three replications. The position of both cooled and non-cooled perches was set to make animals pass over the perch for feeding and drinking. The perch temperature was set to 10°C for cooled perches while litter thicknesses were 1, 7, and 14 cm. Results showed that cooled perches decreased the severity of footpad and gait score, and tibial dyschondroplasia in broilers. Footpad dermatitis and hock burn score decreased in broilers reared at 14 cm litter. It was determined that the length and width of tarsometatarsus at 42 day of age was increased in cooled perch and 1 cm litter group. Tibia length and robustness index in cooled perch group was found higher than those in non-cooled and no-perch groups. The perch application has no effect on the weight-length and tibio-tarsal indexes. Tibia lengths in 1 cm (103.81 mm) litter thickness group were higher than in both 7 and 14 cm groups. The bones from 1 cm litter thickness group were found heavier (21.55 g) than in 7 cm litter group. These results indicated that cooled perch and 14 cm litter thickness has a beneficial effect on broilers’ well-being in hot weathers.