Effect of preslaughter transport on carcass yield and indices of meat quality in sheep

Objective: The aim of this study was to identify a distribution pattern of meat quality grade (MQG) as a function of carcass yield index (CYI) and the gender of Hanwoo (bull, cow, and steer) to determine the optimum point between both yield and quality. We also attempted to identify how pre- and post-deboning variables affect the gender-specific beef quality of Hanwoo.Methods: A total of 31 deboning variables, consisting of 7 pre-deboning and 24 post-deboning variables from bulls (n = 139), cows (n = 69), and steers (n = 153), were obtained from the National Institute of Animal Science (NIAS) in South Korea. The database was reconstructed to be suitable for a statistical significance test between the CYI and the MQG as well as classification of meat quality. Discriminant function analysis was used for classifying MQG using the deboning parameters of Hanwoo by gender.Results: The means of CYI according to 1+, 1, 2, and 3 of MQG were 68.64±2.02, 68.85±1.94, 68.62±5.88, and 70.99±3.32, respectively. High carcass yield correlated with low-quality grade, while high-quality meat most frequently was obtained from steers. The classification ability of pre-deboning parameters was higher than that of post-deboning parameters. Moisture and the shear force were the common significant parameters in all discriminant functions having a classification accuracy of 80.6%, 71%, and 56.9% for the bull, cow, and steer, respectively.Conclusion: This study provides basic information for predicting the meat quality by gender using pre-deboning variables consistent with the actual grading index.

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Carcass characteristics of broilers fed enzyme complex

Biotechnology in Animal Husbandry ◽

10.2298/bah1502153d ◽

2015 ◽

Vol 31 (2) ◽

pp. 153-162 ◽

Cited By ~ 3

Author(s):

F.S. Dalólio ◽

D.P. Vaz ◽

J. Moreira ◽

L.F.T. Albino ◽

L.R. Valadares

Keyword(s):

Meat Quality ◽

Soybean Meal ◽

Broiler Chickens ◽

Broiler Chicks ◽

Enzyme Complex ◽

Carcass Yield ◽

Randomized Design ◽

Enzyme Supplementation ◽

Water Holding

Enzyme supplementation in diets based on corn and soybean meal can improve the productive performance of broilers. Thus, we aimed to evaluate the effect of the inclusion of different levels of an enzyme complex consisting of phytase, protease, xylanase, ?-glucanase, cellulase, amylase, and pectinase, for diets based on corn and soybean meal, on the parameters of carcass yield and meat quality of broilers. Six hundred broiler chicks were used, and the animals were females with one day of age, from the Cobb 500 strain, and distributed in a completely randomized design, with five levels of inclusion of the enzyme complex (0, 100, 200, 300 and 400), and six repetitions, with twenty animals each. The carcass yield and meat quality were evaluated at 35 and 42 days of age. We evaluated the characteristics of weight loss by cooking (WLC), shear force (SF), water holding capacity (WHC), pH, lightness (L*) and color (a* and b*). The parameters of performance, carcass yield and carcass parts, and meat quality were not affected by the enzyme supplementation of diets fed to broiler chickens (P >0.05), except for the performance characteristics of the breast and the wings at 42 days of age (P < 0.05).

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Effects of Dietary Supplementation with dl-Methionine and dl-Methionyl-dl-Methionine in Breeding Pigeons on the Carcass Characteristics, Meat Quality and Antioxidant Activity of Squabs

Antioxidants ◽

10.3390/antiox8100435 ◽

2019 ◽

Vol 8 (10) ◽

pp. 435 ◽

Cited By ~ 3

Author(s):

Shi-Guang Jiang ◽

Neng-Xia Pan ◽

Meng-Jie Chen ◽

Xiu-Qi Wang ◽

Hui-Chao Yan ◽

...

Keyword(s):

Antioxidant Activity ◽

Meat Quality ◽

Carcass Characteristics ◽

Dietary Supplementation ◽

Basal Diet ◽

Relative Bioavailability ◽

Breast Muscle ◽

Thigh Muscle ◽

Drip Loss ◽

Carcass Yield

This study aimed to investigate the effects of dietary supplementation with dl-methionine (dl-Met) and dl-methionyl-dl-methionine (dl-Met-Met) in breeding pigeons on the carcass characteristics, meat quality and antioxidant activity of squabs. A total of 324 pairs of breeding pigeons were selected and allotted to 9 treatments in a completely randomized design, and the birds were fed dietary treatments for 45 d, including a Met-deficient basal diet (BD, crude protein = 15%, Met = 0.25%) and BD + 0.15%, 0.30%, 0.45%, or 0.60% dl-Met or dl-Met-Met diets. Compared with the diet fed to the BD group, dietary dl-Met or dl-Met-Met supplementation effectively increased the carcass yield, semieviscerated yield, eviscerated yield, breast muscle yield, thigh muscle yield, a* value, catalase activity, total superoxide dismutase activity and glutathione peroxidase activity, but decreased the L* value, malonaldehyde concentration, drip loss and cooking loss of squabs (p < 0.05). The relative bioavailability values of dl-Met-Met relative to those of dl-Met were 467% and 376% based on carcass yield and breast muscle yield, respectively (p < 0.001). Moreover, dl-Met-Met was more effective than dl-Met in decreasing the drip loss and improving the antioxidant activity of the breast and thigh muscles of squabs (p < 0.05). As a source of Met, dl-Met-Met, rather than dl-Met, was more beneficial to squabs.

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The influence of pre-slaughter transport and lairage on meat quality in pigs of two genotypes

Animal Science ◽

10.1017/s0003356100004566 ◽

1990 ◽

Vol 50 (1) ◽

pp. 165-172 ◽

Cited By ~ 17

Author(s):

P. D. Warriss ◽

S. N. Brown ◽

E. A. Bevis ◽

S. C. Kestin

Keyword(s):

Meat Quality ◽

Live Weight ◽

Liver Weight ◽

Liver Glycogen ◽

Transport Time ◽

White Line ◽

Cross Sectional ◽

Carcass Yield ◽

Compliance With The Law ◽

The Uk

ABSTRACTTwo hundred and thirty-nine pigs reared at the Meat and Livestock Commission's Stotfold Pig Development Unit and derived from the four major breeding companies in the UK were slaughtered at 63 kg live weight in an experiment which examined the effect of genotype (Meat-line or White-line), pre-slaughter transport time (1 or 4 h) and lairage time (2 or 21 h) on carcass and meat quality. The pre-slaughter handling was chosen to simulate good commercial procedures and cover the range of transport and lairage times probably experienced by a large proportion of British slaughter pigs. Meatline pigs had higher killing-out proportions and heavier carcasses, with increased cross-sectional area of the m. longissimus dorsi. Backfat thickness was similar in the two genotypes. White-line pigs had heavier livers and produced meat which potentially had a lower incidence of PSE. Longer transport time increased live-weight loss. It reduced carcass yield in the White-line but not in the Meat-line pigs. Transport had no major effects on meat quality. Longer lairage, during which the pigs were fed in compliance with the law, resulted in reduced carcass yield but increased liver weight and allowed some repletion of liver glycogen. It also reduced ultimate pH values in the m. semimembranosus and m. adductor. There were no important or consistent differences in the way pigs of the two genotypes responded to pre-slaughter handling.

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