Discrimination study between carcass yield and meat quality by gender in Korean native cattle (Hanwoo)

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.

Download Full-text

The twelve-month outcome of patients with neurotic illness in general practice

Psychological Medicine ◽

10.1017/s0033291700052855 ◽

1981 ◽

Vol 11 (3) ◽

pp. 535-550 ◽

Cited By ~ 122

Author(s):

A. H. Mann ◽

R. Jenkins ◽

E. Belsey

Keyword(s):

Social Life ◽

Function Analysis ◽

Psychiatric Morbidity ◽

The Social ◽

Assessment Measures ◽

Psychiatric State ◽

One Year

SYNOPSISOne hundred patients, selected to be representative of those attending general practitioners with non-psychotic psychiatric disorders were followed up for one year. standard assessments of mental state, personality, social stresses and supports were carried out for each patient at the outset and after a year.The outcome for this cohort determined both by the level of psychiatric morbidity at interview after one year and by the pattern of the psychiatric morbidity during the year has been analysed with reference to the assessment measures. Discriminant function analysis indicates that the initial estimate of the severity of the psychiatric morbidity and a rating of the quality of the social life at the time of follow-up are the only factors that significantly predict the psychiatric state after one year. Social measures also predict a pattern of illness charactorized by a rapid recovery after the initial assessemtn. Patients who reported continuous psychiatric morbidity during the year were, older, physically ill and very likely to have recevied psychotropic drugs. Receipt of this medication during the year was associated with initial assessments of abnormality of personality, older age, and a diagnosis of depression.The findings of this study are seen to support a triaxial assessment and classification of non-psychotic psychiatirc disorders, with symptoms, personality and social state being rated independently.

Download Full-text

Effects of Adding Vitamins and Organic Acids into the Drinking Water on Growth Performance, Carcass Yield and Meat Quality of Broilers Raised Under Tropical Condition

Journal of Applied Sciences ◽

10.3923/jas.2014.3493.3499 ◽

2014 ◽

Vol 14 (24) ◽

pp. 3493-3499

Author(s):

Pornpun Phoprasit ◽

Chaiyapoom Bunchasak ◽

Choawit Rakangthon ◽

Theerawit Poeikhamph

Keyword(s):

Drinking Water ◽

Organic Acids ◽

Growth Performance ◽

Meat Quality ◽

Tropical Condition ◽

Carcass Yield

Download Full-text

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).

Download Full-text

Fatty acid profile, carcass traits and meat quality of Nellore steers following supplementation with various lipid sources

Animal Production Science ◽

10.1071/an15149 ◽

2017 ◽

Vol 57 (6) ◽

pp. 1170 ◽

Cited By ~ 3

Author(s):

Isabela P. C. Carvalho ◽

Giovani Fiorentini ◽

Josiane F. Lage ◽

Juliana D. Messana ◽

Roberta. C. Canesin ◽

...

Keyword(s):

Fatty Acid ◽

Dietary Supplements ◽

Meat Quality ◽

Linseed Oil ◽

Statistical Significance ◽

Average Daily Gain ◽

Carcass Traits ◽

Subcutaneous Fat ◽

Practical Significance

The aim of the present study was to evaluate the fatty acid composition of meat and subcutaneous fat, carcass traits and meat quality of Nellore steers fed diets supplemented with various lipid sources. Forty-five young bulls, with average bodyweight of 441 ± 30 kg, were allotted into 10 paddocks, with five treatments, each consisting of two paddocks. The bulls were randomly assigned into one of the following five treatments, which consisted of four lipid sources: palm oil (PO), linseed oil, rumen protected fat (soybean-based oil), whole soybean, and a control (without additional fat). Trial duration was 120 days, which included 30 days of adaptation. Supplements were offered daily at 10 g/kg bodyweight per day. Dietary supplements for providing additional fat were formulated to consist of 10% ether extract. Lipid sources did not significantly affect the average daily gain (P = 0.797) or dressing percentage (P = 0.663). Supplementation with PO increased the concentrations of lauric acid (P = 0.036) and myristic acid (P < 0.001) in the muscle and subcutaneous fat. Animals supplemented with linseed oil had significantly higher concentrations of conjugated linolenic acid in the meat (P = 0.036) and fat (P = 0.049) than did control animals. In the present study, the use of various lipid sources in dietary supplements of grazing cattle during finishing period did not affect carcass traits or physical attributes of beef. This absence of statistical significance may be related to the minimum number of repeat paddocks (2) per treatment. Thus, differences that can have a practical significance were not evidenced by statistical analysis. The inclusion of PO and protected fatty acids derived from soybean oil (rumen-protected fat) is not recommended as a method to improve the lipid profile of meat and subcutaneous fat of Nellore cattle.

Download Full-text