ZBRH.htm

NR ZBRH

AU von Wenzlawowicz,M.; Schütte,A.; von Holleben,K.; von Altrock,A.; Bostelmann,N.; Roeb,S.

TI Field-study on welfare aspects of the Midas-stunning device with Inarco System - Part II: Preliminary factors of strain and meat quality

QU Fleischwirtschaft 1998; 78: 1096-9

PT journal article

AB Good electrical stunning depends on low preliminary factors of strain, good restraining, precise electrode placement, suitable current parameters and quick effective bleeding. Welfare aspects of the Midas-stunning device were evaluated under practical conditions on 6.056 pigs (60-155 kg life weight) in three European plants (line speed: 156, 358, 365 pigs per hour). For current characteristics and stunning effectiveness see part I (incidence of correct stunning: 99,1 %). Carcass / meat quality aspects (broken spine bones, blood splash) were estimated referring to preliminary factors of strain (evaluated by sticking blood temperature, blood lactate content and noise level) and animal-fitness (judged by lean meat content and slaughter weight). The percentage of broken spine bones (average 0,3-1,7 %) and blood splash is comparably low (average of 2nd/3rd degree: 4,8/1 % (M. semimembranosus) and 0,7/0,2 % (Mm. adductores)). Especially blood splash is to be put into relation with excessive strain before slaughter, high lean meat content and high slaughter weight. High blood lactate concentration (average 12-17 mmol/l), sticking blood temperature (average 39,7-40,7 degrees C) and noise level (87- 99 db) characterise this strain. Negative influences on carcass/ meat quality as a result of stunning are not to be expected. It is concluded that the Midas-stunning device fulfils modern demands on welfare and meat quality. Stunning devices should generally be tested in a corresponding way.

AD von Wenzlawowicz,M.; Beratungs- und Schulungsinstitut für schonenden Umgang mit Zucht und Schlachttieren, Postfach 1469, D-21487 Schwarzenbek, Germany

SP deutsch

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