2 research outputs found

    Qualidade da carne de cordeiros Santa InĂȘs puros e mestiços com Texel abatidos com diferentes pesos

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    PropĂŽs-se avaliar os parĂąmetros de qualidade pH, cor, perda de peso por cozimento (PPC) e força de cisalhamento (FC) no mĂșsculo Longissimus dorsi (LD) e Semimembranosus (SM) de 13 cordeiros machos e 14 fĂȘmeas Santa InĂȘs puro (SI x SI) e o mesmo nĂșmero de animais Texel x Santa InĂȘs (T x SI), abatidos com 15, 25, 35 e 45 kg PV. A carcaça foi resfriada por 24 horas a 2ÂșC, realizando-se, durante este perĂ­odo, as medidas de pH. Retiraram-se os mĂșsculos LD e SM para as anĂĄlises de cor, PPC e FC. Utilizou-se um DIC, fatorial 2x2x4, e as mĂ©dias foram analisadas pelo Proc GLM do programa estatĂ­stico SAS. As medidas de pH foram analisadas em parcela subdividida. A queda do pH no LD e SM foi mais acentuada para os animais mais leves. A carne das fĂȘmeas T x SI apresentou pH final maior que a dos machos e cordeiros SI x SI. A luminosidade diminuiu e a intensidade da cor vermelha elevou-se com o aumento do peso de abate. A carne dos machos e dos cordeiros SI x SI apresentou coloração mais vermelha e menos luminosa no LD e SM. A PPC foi menor na carne dos cordeiros mais pesados; no mĂșsculo LD, dos machos houve menor perda de ĂĄgua que nos das fĂȘmeas. Os machos tiveram carne mais dura e, com o aumento do peso de abate, houve diminuição de FC, sendo maior para o T x SI para o mĂșsculo LD e Santa InĂȘs puro para o mĂșsculo SM.The objective of this study was analyze the colour, pH, weight loss by cooking (PPC) and shear force (FC) of the Longissimus dorsi (LD) and semimembranosus (SM) muscles of Santa InĂȘs (SI x SI) and Texel x Santa InĂȘs (T x SI) lambs, slaughtered at different live weights. Thirteen males and fourteen females were slaughtered at 15, 25, 35 and 45 of live weight. The carcasses were kept during twenty-four hours at 2ÂșC and during that time the pH was measured. A completely randomized design in a latin square (2x2x4) arrange for analyse of colour, PPC and FC was used. Split plot arranged was used for the pH values analysis. The decrease of pH of both muscles (LD and SM) was greater in the lighter animals. T x SI females meat showed higher pH values than SI x SI males lambs. The lightness values increased and darkness was lower when the slaughter weight increased. The muscles (LD and SM) of the SI x SI males were reader and darker. The PPC was lower in the heaviest animals and in the LD muscle it was lower in the female lambs. Male lambs muscles lost more water were harder than of the females muscles. The decrease of the FC was related to the increase in the slaughtering weight, and this effect was higher in the LD muscle of T x SI animals and in the SM muscle of the SI x SI animals
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