Caracterização do processo de rigor mortis em músculos de cordeiros da raça Santa Inês e F1 Santa Inês x Dorper

The development of rigor mortis process of butcher animal carcasses directly influencing the meat quality. The characteristics of rigor mortis process in ovine carcass during industrial chilling to obtain the chilled carcasses have been studied in other countries and in Brazil in Santa Ines sheep, but not yet established in F1 Dorper x Santa Inês. Thus, this research was designed to characterize the rigor mortis process of Semitendinosus and Triceps brachii muscles during the industrial chilling and meat tenderness in 10 ovine carcasses. Ten intact male ovines breed were randomly assembled, six of Santa Inês breed and four F1 Dorper x Santa Inês, slaughtered at Campos Slaughterhouse – Campos dos Goytacazes, Rio de Janeiro. After exsanguination, were measured temperature, pH and sarcomere length at different times (4h; 6h; 8h; 10h; 12h; and 24h) and shear force or tenderness (48h) of Semitendinosus muscle. In parallel was accomplished the sensorial analysis relationships to instrumental values of this muscle. The chilling room temperature varied between 12.2 °C (4h) and -0.5°C (24h) and the mean temperature of carcasses was 26.80°C and -0.20°C, respectively. The mean initial pH of Semitendinosus was 6.62 and final 5.64 and of Triceps brachii was 6.50 (4h) and 5.68 (24h). The maximum contraction of sarcomere of Semitendinosus occurred at 12th hour (1.50mm) after exsanguination whereas for the Triceps brachii, at the range of the 10th to 24th hours (1.53 to 1.57mm). Semitendinosus muscle shear force and tenderness was similar in lambs of Santa Ines breed and F1 Dorper x Santa Inês, demonstrating that the genetic group did not affect meat tenderness. The sensory panel confirmed the results obtained in instrumental analysis. The correlation of instrumental analysis (shear force) when compared different genetic groups, was found a good inversed correlation (r = -0.87).

[1]  D. A. Nogueira,et al.  Características sensoriais da carne de cordeiros da raça Santa Inês submetidos a diferentes dietas , 2009 .

[2]  Fábio Habermann da Costa,et al.  Caracterização do processo de rigor mortis nos músculos Gastrocnemius e Pectoralis de perus (Meleagris gallopavo) e maciez da carne Characterization of rigor mortis process of muscles Gastrocnemius and Pectoralis of turkey (Meleagris gallopavo) and meat tenderness , 2006 .

[3]  Marcelo Farid Pereira,et al.  Características de carcaça e análise do custo de sistemas de produção de cordeiras ½ Dorset Santa Inês , 2006 .

[4]  M. Zundt,et al.  Desempenho e características de carcaça de cordeiros Santa Inês confinados, filhos de ovelhas submetidas à suplementação alimentar durante a gestação , 2006 .

[5]  Américo Garcia da Silva Sobrinho,et al.  Características de qualidade da carne de ovinos de diferentes genótipos e idades ao abate , 2005 .

[6]  J. A. D. Silva,et al.  Avaliação das proporções dos cortes da carcaça, características da carne e avaliação dos componentes do peso vivo de cordeiros , 2005 .

[7]  P. B. Faria,et al.  Efeitos do grupo genético, sexo e peso ao abate sobre as propriedades físico-químicas da carne de cordeiros em crescimento , 2004 .

[8]  J. M. Lee,et al.  Effects of muscle shortening and proteolysis on Warner-Bratzler shear force in beef longissimus and semitendinosus. , 2004, Meat science.

[9]  M. C. Bressan,et al.  Qualidade da carne de cordeiros Santa Inês puros e mestiços com texel abatidos com diferentes pesos , 2003 .

[10]  C. Kerth,et al.  Warner‐Bratzler Shear Force Repeatability in Beef Longissimus Steaks Cooked With a Convection Oven, Broiler, or Clam‐shell Grill , 2003 .

[11]  M. C. Bressan,et al.  EFEITO DO PESO AO ABATE DE CORDEIROS SANTA INÊS E BERGAMÁCIA SOBRE AS CARACTERÍSTICAS FÍSICO-QUÍMICAS DA CARNE , 2001 .

[12]  Marcela Abbado Neres,et al.  Forma física da ração e pesos de abate nas características de carcaça de cordeiros em creep feeding , 2001 .

[13]  I. Y. Mizubuti,et al.  Carcaça de borregos Ile de France inteiros ou castrados e Hampshire down castrados abatidos aos doze meses de idade , 2001 .

[14]  Søren Balling Engelsen,et al.  Pre-rigor conditions in beef under varying temperature- and pH-falls studied with rigometer, NMR and NIR , 2000 .

[15]  P. Santolaria,et al.  Breed effect on carcase and meat quality of suckling lambs. , 1997, Meat science.

[16]  C. E. Lyon,et al.  Sensory Descriptive Profile Relationships to Shear Values of Deboned Poultry , 1997 .

[17]  T. Wheeler,et al.  Prerigor and postrigor changes in tenderness of ovine longissimus muscle. , 1994, Journal of animal science.

[18]  J. L. Forrest,et al.  Principles of Meat Science , 1994 .

[19]  J. Crouse,et al.  Postmortem proteolysis in longissimus muscle from beef, lamb and pork carcasses. , 1991, Journal of animal science.

[20]  E. Dransfield,et al.  Carcass and eating quality of ram, castrated ram and ewe lambs , 1990 .

[21]  T. Bidner,et al.  The Effect of Three Temperature Conditioning Treatments and Subcutaneous Fat Removal on Lamb Quality , 1989 .

[22]  T. R. Dutson,et al.  EFFECTS OF PRERIGOR CONDITIONING TREATMENTS ON LAMB MUSCLE SHORTENING, pH AND ATP , 1978 .

[23]  B. Marsh,et al.  Rigor mortis and thaw rigor in lamb , 1958 .

[24]  O. Behmer,et al.  Manual de técnicas para histologia: normal e patológica , 2003 .

[25]  Herbert Stone,et al.  Quantitative descriptive analysis: developments, applications and the future , 1998 .

[26]  B. B. Chrystall,et al.  The effect of growth rate and ultimate pH on meat quality of lambs. , 1993, Meat science.

[27]  Elvira Costell Ibáñez,et al.  Análisis sensorial y descriptivo: Generación de descriptores y selección de catadores , 1991 .

[28]  S. Babiker,et al.  Chemical composition and quality attributes of goat meat and lamb. , 1990, Meat science.

[29]  R. Kemp,et al.  Veterinary clinical parasitology. 5th ed. , 1978 .