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Articles by S.C. Flores-Peinado
Total Records ( 2 ) for S.C. Flores-Peinado
  D. Mota-Rojas , M. Becerril Herrera , M.E. Trujillo-Ortega , M. Alonso-Spilsbury , S.C. Flores-Peinado and I. Guerrero-Legarreta
  The aim of this research was to study the effects of pre-slaughter transport and lairage on the chemical serologic profile of swine, as well as its relationship with qualitative aspects of meat: pH, color and temperature. Forty eight Pietrain x Landrace pigs were monitored (24 females and 24 barrows). They were transported on straw bedding trucks without stops during 2 h and deprived of feed and water. Blood samples were taken before loading, at arrival to the slaughterhouse, after lairage and during bleeding (20 sec after they were electrically stunned). At arrival to the slaughterhouse pigs were randomly distributed in 4 groups: Rested (n = 24) non-rested (n = 24) these groups were also divided by sex. Blood samples were taken form groups 1 and 2 and the animals sent directly to the slaughter pens, whereas groups 3 and 4, after blood sampling, were taken to lairage pens. Glucose and Creatine Kinase (CK) showed a high increase in blood concentration, associated to an increase in muscular activity and a decrease in globulins concentration as a consequence of stress and immunosuppression. Hyperglycemia and lactic acidosis detected in animals without rest were statistically different (p<0.05) compared to the group that rested. Bicarbonate level significantly decreased (p<0.05) in non-rested animals as compared to rested animals. Results indicated that animals without rest before slaughter can show hemodynamic and metabolic alterations that lead to hyperglycemia, lactic acidosis and an abrupt descent of pH, altering the carcass color.
  M.Y. Guerrero , S.C. Flores-Peinado , M. Becerril-Herrera , A. Cardona-Leija , M. Alonso-Spilsbury , M.M. Zamora-Fonseca , J. Toca , R. Ramirez , J.A. Toca and D. Mota-Rojas
  The aim of this research was to study the effect of cervical dislocation and electric stunning of the California breed rabbit with a rest period before sacrifice (at 70 days of age) as well as the effect of same on sanguineous pH, temperature, glucose levels, creatine kinase, and slaughter performance. Forty male and female rabbits of the California breed were used. The sacrificed animals had either cervical dislocation or electrical stunning performed on them, then sacrificed according to normal regulatory practices. Our study is based on two insensibilization methods, cervical dislocation and electric stunning. The results show that plasmatic glucose and temperature before sacrifice and after insensibilization were not affected significantly (p>0.05) in the rest period or by sacrificial method. The pH of the animals that were given a rest period previous to sacrifice was significantly different from the animals that were not given rest; no significant difference between the insensibilization methods was found. We found a significant difference for bleeding times (p< 0.05) between cervical dislocation with rest compared to electrical stunning without rest. The rest period (p>0.05) did not significantly affect the volume of blood recovered during bleeding. However when comparing bleeding volume by insensibilization method significant statistical differences (p< 0.05) were observed. There were no significant difference in the variables of carcass evaluation; however, the lack of a rest before sacrifice affected pH values and temperature of the rabbit meat significantly.
 
 
 
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