caa a22 4500 397568770 CHVBK 20180308164835.0 cr unu---uuuuu 161202e199605 xx s 000 0 eng 10.3382/ps.0750664 doi (NATIONALLICENCE)oxford-10.3382/ps.0750664 The Effects of Alternative Electrical and Mechanical Stunning Methods on Hemorrhaging and Meat Quality of Broiler Breast and Thigh Muscles [Elektronische Daten] [S.J.W. HILLEBRAND, E. LAMBOOY, C. H. VEERKAMP] Five trials were conducted to determine the effects of various alternative stunning and restraining methods on the quality of chicken broiler meat. The stunning methods used were electrical whole-body and head-only stunning with different voltages (25 vs 100 V) and frequencies (50 vs 200 Hz), and mechanical captive bolt stunning. Before being stunned, the broilers were restrained either by shackling them by the feet, restraining their heads while they were standing, or placing them in a cone. Convulsions during and after stunning were subjectively scored. At 1 d post-mortem, the pH, color, and the intensity and number of hemorrhages, of breast and thigh muscles were measured. Convulsions were, in order of increasing intensity, observed after whole-body stunning using 50 Hz, whole-body stunning using 200 Hz, head-only stunning, and captive bolt stunning. No differences in ultimate pH were measured. A consistent difference in color was observed between whole-body and head-only stunning. Head-only stunning resulted in darker and more red (P ≤ 0.01) breast muscles. Head-only and captive bolt stunning resulted in hemorrhages that were located more distal in the breast muscle than those observed after whole-body stunning. Captive bolt stunning (in a cone) resulted in fewer (P ≤ 0.01) hemorrhages in breast and thigh muscles than whole-body stunning (100 V, 50 Hz, shackled), and in a similar level of hemorrhaging as electrical head-only stunning (25 V, 200 Hz, in a cone). © 1996 Poultry Science Association, Inc. Processing and Products nationallicence broiler nationallicence stunning nationallicence restraining nationallicence meat quality nationallicence hemorrhages nationallicence HILLEBRAND S.J.W. aut LAMBOOY E. aut VEERKAMP C. H. aut Poultry Science Oxford University Press 75/5(1996-05), 664-671 0032-5791 75:5<664 1996 75 ps https://doi.org/10.3382/ps.0750664 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.3382/ps.0750664 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- HILLEBRAND S.J.W. aut NATIONALLICENCE 700 1- LAMBOOY E. aut NATIONALLICENCE 700 1- VEERKAMP C. H. aut NATIONALLICENCE 773 0- Poultry Science Oxford University Press 75/5(1996-05), 664-671 0032-5791 75:5<664 1996 75 ps Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford