RACTOPAMINE HYDROCHLORIDE AND IMMUNOCASTRATION EFFECTS ON ITALIAN COPPA PROPERTIES

摘要

The effects of immunocastration and Ractopamine (RAC) feeding require studies to clarify the interaction of these two technologies on quality traits of swine products. The aim of this study was to evaluate the acceptability of coppa obtained of this technology. Ninety swine neck from crossbred (Tempo, male and Topigs 40, female) pigs were processed for preparation of Coppa Italian type. Six group were divided: gilts (FE), male pigs castrated physically (PC) and immunologically (IC), each one with/without (RAC) (7.5mg/Kg during 21 days). Thirty samples of each treatment (half pieces of pork necks = experimental unit (n = 180)) were processed. Samples were assessed by 54 consumers (63% women and 37% men) of coppa using the nine-point structured hedonic scale (l=disliked extremely, 9=like extremely) and five point structured purchase intent scale (l=definitely would not buy; 5=definitely would buy). Test was carried out in the Sensory, Physics and Statistic Analysis Reference Laboratory Unit (LAFISE) of CCQA/ITAL. Samples were presented blind to consumers in a monadic way and in a balanced complete block design. Data was submitted to ANOVA and Tukey test to compare means. Coppa of all treatments were well accepted by consumers and there were no significant differences (p>0.05) in the consumer means scores categories for appearance and flavor ("liked moderately (7)" - "liked very much" (8)), texture and overall acceptability ("liked s moderately (7)", among the six treatments. The purchase frequency (60%) shows that all products were certainly/probably likely to buy. The present results for consumer acceptance suggest that immunocastration and Ractopamine (RAC) feeding can be successfully applied for Italian Coppa.