scholarly journals Quality indicators: Carcass side and meat quality of pigs of different genotypes

2009 ◽  
Vol 25 (3-4) ◽  
pp. 173-188 ◽  
Author(s):  
O. Kosovac ◽  
B. Zivkovic ◽  
Cedomir Radovic ◽  
T. Smiljakovic
Keyword(s):  
Chemical Composition ◽  
Meat Quality ◽  
Muscle Tissue ◽  
Lean Meat ◽  
Investigation Methods ◽  
Genotype C ◽  
Technological Quality ◽  
Genotype E

In the paper, lean meat and quality of meat from pigs of 5 different genotypes were investigated: pure Landrace breed (L), genotype A; two hybrid combinations (Large Yorkshire x Landrace) x Duroc (LY x L) x D, genotype B; (Large Yorkshire x Landrace) x Pietrain (LY x L) x P, genotype C; and tow recurrent mating combinations: (Large Yorkshire x Landrace) x Large Yorkshire (F1x LY, genotype D) and (Large Yorkshire x Landrace) x Landrace (F1 x L, genotype E). Relevant indicators of lean meat were analyzed early post mortem and by method of partial dissection on cooled left carcass sides according to recommendation of EU. By analysis of obtained results it was established that the best indicator of lean meat of pig carcass sides mass of muscle tissue in four main parts. This conclusion derives from the fact that fatteners (genotype C) which had the greatest mass of muscle tissue in four main parts (15,33kg) also had the highest lean meat share in leg, shoulder, back-loin part (BLP) and belly-rib part (BRP) (69,67%, 57,71%, 54,42% and 44,99%) and highest share of muscle tissue in carcass sides when any of the mentioned investigation methods was applied (51,23 and 60,73%) compared to fatteners of other investigated genotypes. The quality of meat was investigated by determination of its technological quality and chemical composition of the MLD. Technological quality and chemical composition of MLD meat exhibited significant (*p<0,05) differences in WBC and pigment content between genotypes B and C, as well as B and E. Average values for content of ashes and share of pigments corresponds with average values characterizing muscles of normal properties. By analysis of obtained results we can conclude that fatteners of genotype E had the highest meat yield in carcass sides, but of slightly lower quality, which indicates the need for further work on improvement of meat quality. .

scholarly journals Comparable presentation of carcass and meat quality of different pig genotypes using modern evaluation methods

2007 ◽  
Vol 23 (5-6-2) ◽  
pp. 291-301 ◽  
Author(s):  
O. Kosovac ◽  
S. Josipovic ◽  
B. Zivkovic ◽  
C. Radovic ◽  
G. Marinkov ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Meat Quality ◽  
Average Yield ◽  
Meat Yield ◽  
Methods Of Evaluation ◽  
Genotype C ◽  
Technological Quality ◽  
Genotype E

In this paper quality of carcasses/carcass sides and meat from 5 different pig genotypes was comparably evaluated. Quality of carcass sides was evaluated prior to slaughtering in vivo (SONOMARK SM 100 M), early post mortem on slaughter line (FOM), by method of two points (ZP - ZWEIPUNKT) as well as method of partial dissection on cold left carcass sides according to EU recommendations. By analysis of obtained results it can be concluded that fatteners of type E (LW x SL) x P had the highest meat yield in carcass sides (61,90; 62,40; 58,85 and 58,89%) by any other mentioned methods of evaluation compared to average meat yield in carcass sides of other investigated genotypes. Average yield of muscle tissue in carcasses of pigs of E genotype (LW x SL) x P (58,89%) established by method of partial dissection was statistically considerably higher (*p<0,05) than the average (56,06%) meat yield in carcasses of pigs of genotype D, very significantly higher (**p<0,01) than average (57,01%) meat yield in carcasses of pigs of genotype C and very highly significantly higher (***p<0,001) than average (51,30%) meat yield in carcasses of pigs of genotype A. The quality of meat was also investigated comparably by determining its technological quality and chemical composition of MLD in investigated genotypes of pigs. Technological quality and chemical composition of MLD demonstrated significant (*p<0,05) differences in WBC and pigment content between genotypes B and C and B and E. Average values for content of ashes and share of pigment are in accordance with average values which characterize muscles of normal traits. By analysis of obtained results we conclude that fatteners of genotype E (LW x SL) x P had the highest meat yield in carcass sides (61,90; 62,40; 58,85 and 58,89%), but quality was slightly decreased which indicates need for further improvement of meat quality.

scholarly journals Quality of beef diaphragm meat in naturally occurring Sarcocystic infection in cattle

2018 ◽  
Vol 36 (No. 5) ◽  
pp. 378-385
Author(s):  
Vytautas Januskevicius ◽  
Grazina Januskeviciene ◽  
Gintare Zaborskiene
Keyword(s):  
Meat Quality ◽  
Harmful Effect ◽  
Coliform Bacteria ◽  
E Coli ◽  
Noticeable Increase ◽  
Physico Chemical ◽  
Infected Meat ◽  
Technological Quality ◽  
Meat Samples

The aim of this study was to investigate the possible harmful effect of Sarcocystis parasites on bovine diaphragm meat quality. Meat samples were collected from 120 bulls aged 20–24 months. Meat quality was investigated using microbiological and physico-chemical (RP-HPLC, GC) methods 48 hours after slaughter. Sarcocystis infection was associated with increased fat content, lightness L* and drip loss, and decreased ash and protein percentages. Infection also had a significant effect on the amount of amino acids (AAs), which slowly decreased as the number of sarcocysts increased. The total amount of AAs correlated with glutamic acid content (R = 0.966, P &lt; 0.05). Heavily infected samples contained significantly lower amounts of putrescine, histamine, spermine and spermidine (P &lt; 0.05) and<br /> a noticeable increase in the total count of aerobic microorganisms, but no change in the numbers of E. coli and coliform bacteria in comparison with no infected samples. Sarcocysts in beef diaphragms did not cause serious changes in the technological quality of the meat, but the biological quality of infected meat was reduced.  

Determination of Relationship between Chemical Composition of Electrolyte and Surface Sample Quality

2015 ◽  
Vol 669 ◽  
pp. 150-157
Author(s):  
Peter Michal ◽  
Alena Vagaská ◽  
Miroslav Gombár
Keyword(s):  
Sodium Chloride ◽  
Chemical Composition ◽  
Oxalic Acid ◽  
Boric Acid ◽  
Oxide Layer ◽  
Surface Finish ◽  
Chemical Factors ◽  
Substrate Sample

Paper tracks experimentally confirmed relationship between chemical composition of electrolyte and resulting surface finish quality of created oxide layer during the process of anodic oxidation of aluminium. Examined chemical factors were: concentrations of sulphuric acid, oxalic acid, boric acid and sodium chloride. Aggressive effects of electrolyte were chosen as indicator of resulting layer quality – presence and extent of etching of used substrate sample.

scholarly journals Significance of pH-value for meat quality of broilers: Influence of breed lines

2013 ◽  
Vol 67 (1-2) ◽  
pp. 67-73 ◽  
Author(s):  
M. Ristic ◽  
K. Damme
Keyword(s):  
Meat Quality ◽  
Ph Value ◽  
Storage Period ◽  
Breeding Line ◽  
Breast Meat ◽  
Ph Values ◽  
And Gender

For determination of poultry quality shortly after slaughtering, physical criteria (pH-value, conductivity, colour, juice retention) are of importance. However, they are affected by breeding, transport, cooling and the storage period. PH-values of breast meat (genetically structured material) were recorded shortly after slaughtering (15 min p.m.) and differences between breeding line and gender were found (n=5109). The pH1-values ranged from 5.50 to 6.79. Male broilers showed significantly lower pH1-values than female ones (6.02:6.10). There were also significant differences concerning breeding line and gender. Meat quality (PSE, DFD) of broilers can be recorded quickly and accurately determining the pH1-value of breast meat. Threshold ranges to be considered are ? 5.8 (PSE), 5.9-6.2 (standard meat properties) and ? 6.3 (DFD). This classification is not to be compared to the deviation of pork.

scholarly journals Ability of NIR spectroscopy to predict meat chemical composition and quality – a review

2011 ◽  
Vol 49 (No. 11) ◽  
pp. 500-510 ◽  
Author(s):  
M. Prevolnik ◽  
M. Čandek-Potokar ◽  
D. Škorjanc
Keyword(s):  
Chemical Composition ◽  
Meat Quality ◽  
Quality Evaluation ◽  
Near Infrared ◽  
Nir Spectroscopy ◽  
The Other ◽  
Meat Composition ◽  
Feeding Regimes ◽  
Simultaneous Assessment

In contrast to conventional methods for the determination of meat chemical composition and quality, near infrared spectroscopy (NIRS) enables rapid, simple and simultaneous assessment of numerous meat properties. The present article is a review of published studies that examined the ability of NIRS to predict different meat properties. According to the published results, NIRS shows a great potential to replace the expensive and time-consuming chemical analysis of meat composition. On the other hand, NIRS is less accurate for predicting different attributes of meat quality. In view of meat quality evaluation, the use of NIRS appears more promising when categorizing meat into quality classes on the basis of meat quality traits for example discriminating between feeding regimes, discriminating fresh from frozen-thawed meat, discriminating strains, etc. The performance of NIRS to predict meat properties seems limited by the reliability of the method to which it is calibrated. Moreover, the use of NIRS may also be limited by the fact that it needs a laborious calibration for every purpose. In spite of that, NIRS is considered to be a very promising method for rapid meat evaluation. &nbsp; &nbsp;

scholarly journals Physicochemical changes in cubiu fruits (Solanum sessiliflorum Dunal) at different ripening stages

2012 ◽  
Vol 32 (2) ◽  
pp. 250-254 ◽  
Author(s):  
Moacir Couto de Andrade Júnior ◽  
Jerusa Souza Andrade
Keyword(s):  
Maximum Level ◽  
Total Carotenoids ◽  
Physicochemical Changes ◽  
Ripening Stages ◽  
Calorie Content ◽  
Weight Variation ◽  
Technological Quality ◽  
Ripe Stage

Cubiu shrubs (Solanum sessiliflorum Dunal) have drawn the attention of researchers for their biological versatility (preferential heliophilous or facultative ombrophilous shrubs), their capacity to grow in upland or lowland areas, and the good technological quality of their fruits for the food industry. The aim of this study was to verify physicochemical changes in cubiu fruits during maturation. The fruits were harvested from the experimental station of olericulture of the Instituto Nacional de Pesquisas da Amazônia (INPA), Brazil. The analyses were performed in whole cubiu fruits (peel, pulp, and placenta) at four traditional ripening stages (green, turning, ripe, and fully ripe) for the determination of weight, moisture, total solids, total carotenoids, proteins, lipids, and ash. Cubiu fruits showed large weight variation, with amodal distribution. The ripe stage was critical to maintain moisture, and from that stage on, water loss became evident. The lipids increased steadily over the four ripening stages, maintaining, however, insignificant calorie content. Total carotenoids, proteins, and ash reached the maximum level at the fully ripe stage. With the exception of weight and moisture, all physicochemical changes exhibited the same general behavior, i.e. they increased as the fruits ripened at the four investigated stages.

Determination of Quality and Chemical Composition of Silages Obtained from Narbonne Vetch (Vicia narbonensis) and Barley (Hordeum vulgare) Composition

2020 ◽  
Author(s):  
Nizamettin Turan
Keyword(s):  
Chemical Composition ◽  
Hordeum Vulgare ◽  
Crude Protein ◽  
Dry Matter ◽  
Neutral Detergent Fiber ◽  
Hordeum Vulgare L ◽  
Vicia Narbonensis ◽  
Feed Value

Research was conducted to determine the quality and chemical composition of silages obtained by mixing in different ratios of narbonne vetch (Vicia narbonensis L.) and barley (Hordeum vulgare L.) grown in rabi season of 2017-2018 in Eastern Anatolia, Turkey. In the study we studied the pure sowings of barley and narbonne vetch and their mixtures (20, 30, 40, 50, 60, 70, 80% of narbonne vetch (N) + 80, 70, 60, 50, 40, 30, 20% of barley (B). The values of ADF (acid detergent fiber), NDF (neutral detergent fiber), DDM (digestible dry matter), DMI (dry matter intake), DM (dry matter), CP (crude protein) and RFV (relative feed value) of silages of analyzed were respectively 33.38, 33.73, 62.89, 3.57, 24.69, 15.50%, 174.64. We also founded that LA (lactic acid), AA (acetic acid), BA (butyric acid), PA (propionic acid) and Ca, P, Mg, K and pH of silages investigated were respectively 1.60, 0.57, 0.42, 0.06, 1.17, 0.53, 0.25, 3.51% and 3.80. Our results shows that silages with high narbonne vetch were higher quality values for CP, ADF, NDF, DM, RFV, DDM, DMI, Ca, Mg, LA which determined chemical composition and feeding quality of silages. As a result, it is suggested that mixture silages with narbonne vetch (80%) and the barley ratio (20%) have important advantages for some properties of silages.

scholarly journals Influence of degree of wheat infestation with Fusarium on its technological quality and safety

2011 ◽  
pp. 61-72
Author(s):  
Elizabet Janic-Hajnal ◽  
Aleksandra Torbica ◽  
Jasna Mastilovic
Keyword(s):  
Climatic Conditions ◽  
Wheat Crop ◽  
Quality And Safety ◽  
Safety Control ◽  
Test Elisa ◽  
Upper Limits ◽  
Metabolic Products ◽  
Technological Quality

Climatic conditions prior to wheat harvest 2010 were favorable for the development of field molds. The most important wheat contamination that should be determined is the presence and frequency of grain lots infected with Fusarium. This paper presents the results of content of fusarious kernels found in samples collected from all wheat growing regions of Serbia. Investigations were performed according to the regulations which foresee sensory determination of content of infected kernels. Determined average content of fusarious kernels was 6.01%, varying in range from 0% to 29.65 %. The obtained results, which exceeded the upper limits of permitted contents defined by national and EU regulations, pointed to the need for investigation of presence of Fusarium metabolic products, i.e. mycotoxins (zearalenone (ZEA) and deoxinivalenol (DON)) in wheat. Mycotoxin content was determined in average wheat samples and in wheat samples with increased content of fusarious kernels. Direct enzymatic immunoaffinity test (ELISA) was applied for determination of mycotoxin content. Although high content of fusarious kernels characterizes wheat crop in 2010, the determined quantities of two investigated mycotoxins did not exceed maximal permitted content. Consequences of unfavorable quantity and structure of total impurities in wheat crop in 2010 reflect decreased commercial and technological quality of wheat and point out to the need of necessary wheat safety control.

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