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Full-Text Articles in Veterinary Medicine
Determination Of Optimum Pre-Slaughter Feed Withdrawal Time In Broiler Chickens And Its Effect On Meat Yield, Microbiological Composition Of Gut Content And Microbiological Quality Of The Carcass, Erol Şengör, Mehmet Yardimci, Belgi̇n Siriken, Zehra A. Bozkurt, Mustafa Tekerli̇, Beytullah Kenar, E. Hesna Şahi̇n
Determination Of Optimum Pre-Slaughter Feed Withdrawal Time In Broiler Chickens And Its Effect On Meat Yield, Microbiological Composition Of Gut Content And Microbiological Quality Of The Carcass, Erol Şengör, Mehmet Yardimci, Belgi̇n Siriken, Zehra A. Bozkurt, Mustafa Tekerli̇, Beytullah Kenar, E. Hesna Şahi̇n
Turkish Journal of Veterinary & Animal Sciences
This study aimed to determine the optimum time of pre-slaughter feed withdrawal for broiler chickens to maintain profitable and hygienic meat production and to determine its effect on the meat yield, microbiological structure of gut content and microbiological quality of the carcass. A total of 100 birds were allocated to 4 identical 2 m^2 pens in a commercial broiler house, each pen housing 25 birds. The feed withdrawal durations were 18 h (group 1), 12 h (group 2), 6 h (group 3) and 0 h (group 4). The percentage live weight loss increased as the feed withdrawal period increased (P < 0.05). The meat yield in group 4 was lower than that in the other groups (P < 0.05). Full gizzard weight in group 1 was lower than that in groups 3 and 4, and group 2 parameters were lower than group 4 parameters (P < 0.05). Salmonella positive carcasses numbered 1 in group 1, 1 in group 2, 0 in group 3 and 2 in group 4. The only significant difference found among the groups was for coliform bacteria. The coliform count in group 1 (7.54 ± 0.100) was significantly different from that in group 2 (7.00 ± 0.159) and group 3 (7.08 ± 0.169) (P < 0.05).
The Influence Of Cold Conditioning On The Performance Of The Broiler Chicken, Mehmet Yardimci, Erol Şengör, E. Hesna Şahi̇n, İsmai̇l Bayram, İ. Sadi̇ Çeti̇ngül
The Influence Of Cold Conditioning On The Performance Of The Broiler Chicken, Mehmet Yardimci, Erol Şengör, E. Hesna Şahi̇n, İsmai̇l Bayram, İ. Sadi̇ Çeti̇ngül
Turkish Journal of Veterinary & Animal Sciences
The effect of short-term cold exposure on the performance of 600 commercial Ross 308 male broiler chickens was examined. On the fifth and sixth days of life the trial group was exposed to 15 °C ambient temperature for 3 h, both days, while the control group was kept under conventional brooding conditions. Thereafter, both control and trial birds were exposed to standard rearing temperatures until the 21st day, and from the 21st day to slaughter they were exposed to 15 °C ambient temperature. The mortality rate was significantly lower in the trial group (5%) compared to the control group (11%). …