scholarly journals Multivariate Relationships among Carcass Traits and Proximate Composition, Lipid Profile, and Mineral Content of Longissimus lumborum of Grass-Fed Male Cattle Produced under Tropical Conditions

Foods ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1364
Author(s):  
Lilia Arenas de Moreno ◽  
Nancy Jerez-Timaure ◽  
Nelson Huerta-Leidenz ◽  
María Giuffrida-Mendoza ◽  
Eugenio Mendoza-Vera ◽  
...  
Keyword(s):  
Mineral Content ◽  
Carcass Traits ◽  
Hierarchical Cluster ◽  
Cholesterol Content ◽  
Canonical Variate ◽  
Chemical Components ◽  
Coefficients Of Variation ◽  
Tropical Conditions ◽  
Multivariate Relationships ◽  
Longissimus Lumborum

Hierarchical cluster (HCA) and canonical correlation (CCA) analyses were employed to explore the multivariate relationships among chemical components (proximate, mineral and lipidic components) of lean beef longissimus dorsii lumborum (LDL) and selected carcass traits of cattle fattened on pasture under tropical conditions (bulls, n = 60; steers, n = 60; from 2.5 to 4.0 years of age, estimated by dentition). The variables backfat thickness (BFT), Ca, Mn, Cu, C14:0, C15:0, and C20:0 showed the highest coefficients of variation. Three clusters were defined by the HCA. Out of all carcass traits, only BFT differed significantly (p < 0.001) among clusters. Clusters significantly (p < 0.001) differed for total lipids (TLIPIDS), moisture, dry matter (DM), fatty acid composition, cholesterol content, and mineral composition (except for Fe). The variables that define the canonical variate “CARCASS” were BFT and degree of marbling (MARBLING). TLIPIDS was the main variable for the “PROXIMATE” canonical variate, while C16:0 and C18:1c had the most relevant contribution to the “LIPIDS” canonical variate. BFT and MARBLING were highly cross-correlated with TLIPIDS which, in turn, was significantly affected by the IM lipid content. Carcass traits were poorly correlated with mineral content. These findings allow for the possibility to develop selection criteria based on BFT and/or marbling to sort carcasses, from grass-fed cattle fattened under tropical conditions, with differing nutritional values. Further analyses are needed to study the effects of sex condition on the associations among carcass traits and lipidic components.

Influence of the sex and type of tissue on the basic chemical composition and the content of minerals in the sirloin and offal of fattener pigs

2019 ◽  
Vol 99 (2) ◽  
pp. 343-348 ◽  
Author(s):  
Marek Babicz ◽  
Anna Kasprzyk ◽  
Kinga Kropiwiec-Domańska
Keyword(s):  
Chemical Composition ◽  
Mineral Content ◽  
Cadmium Concentration ◽  
Pork Meat ◽  
Threshold Values ◽  
Large White ◽  
Sodium Calcium ◽  
Mineral Components ◽  
Longissimus Lumborum ◽  
The Mean

The aim of the study was to determine the basic chemical composition and mineral content in the sirloin and offal of fattener pigs, taking their sex into consideration. In addition, comparative analysis of the content of chemical and mineral components in the sirloin and offal was performed. The experimental material included 24 crossbred (Polish Landrace × Polish Large White) fatteners, from which samples of sirloin (musculus longissimus lumborum), liver, heart, and kidneys were collected for the analysis. A significant effect of the sex on the fat content in the sirloin and liver and on the level of magnesium (Mg), zinc, and iron (Fe) in the sirloin was demonstrated. Significant differences were found in the basic chemical composition and mineral content between the sirloin and the offal. In comparison with the liver, the sirloin contained lower amounts of protein and fat and higher potassium and Mg contents. In turn, the offal was shown to be a rich source of sodium, calcium, and trace elements (Fe, manganese, and copper). The mean cadmium concentration in the sirloin and offal was significantly lower than the threshold values for these elements, i.e., it accounted for 26% and 6.2% (liver)–19.5% (heart) of the allowable content of this element in pork meat and offal.

scholarly journals Usefulness of selected methods of colour change measurement for pork quality assessment

2011 ◽  
Vol 29 (No. 3) ◽  
pp. 212-218 ◽  
Author(s):  
T. Karamucki ◽  
J. Gardzielewska ◽  
A. Rybarczyk ◽  
M. Jakubowska ◽  
W. Natalczyk-Szymkowska
Keyword(s):  
Quality Assessment ◽  
Meat Quality ◽  
Colour Change ◽  
Industrial Process ◽  
Chemical Components ◽  
Pork Quality ◽  
Before And After ◽  
Longissimus Lumborum ◽  
Colour Parameters ◽  
Meat Colour

A few selected methods of the meat colour change determination were compared with regard to their usefulness in the assessment of the quality of minced pork. The study was carried out on 128 samples of the muscle longissimus lumborum, taken from 128 carcasses weighing 70&ndash;105 kg (equal number of both sexes &ndash; 64), obtained from pigs slaughtered in an industrial process line. The relationships were determined between the meat quality traits (concentrations of basic chemical components in the meat, colour, sensory analysis of wateriness and firmness, WHC and pH<sub>u</sub>), and the changes in colour parameters measured in CIELAB and CIELCh scales, total colour change (&Delta;E*), and the changes determined by Karamucki using the modified Kortz method. It was found that the most useful method for the quality assessment was the Kortz method modified by Karamucki, used to determine the stability of the meat colour (expressed as % colour change) and based on the measurements of absorbance at wavelengths 580 nm and 630 nm, before and after the change of colour. Out of the meat colour parameters, the most useful for assessing the meat quality were the changes in redness (a*) &ndash; CIELAB scale, and hue angle h&ordm; &ndash; CIELCh scale. The changes in colour determined by the aforementioned methods were a better indicator of the pork quality than the total colour change (&Delta;E*).

scholarly journals Performance, Carcass Traits and Quality of Longissimus lumborum muscle of Santa Inês lambs

2020 ◽  
Vol 15 (1) ◽  
pp. 15-25
Author(s):  
Fabio Borba Ferrari ◽  
Juliana Lolli Malagoli de Mello ◽  
Rodrigo Fortunato de Oliveira ◽  
Rondineli Pavezzi Barbero ◽  
Rodrigo Alves de Souza ◽  
...  
Keyword(s):  
Carcass Traits ◽  
Longissimus Lumborum ◽  
Santa Inês

VARIATION IN MINERAL CONTENT OF SASKATCHEWAN FEED GRAINS

1977 ◽  
Vol 57 (4) ◽  
pp. 679-687 ◽  
Author(s):  
B. D. OWEN ◽  
M. J. FARMER ◽  
F. SOSULSKI ◽  
K. K. WU
Keyword(s):  
Soil Type ◽  
Mineral Content ◽  
Clay Soils ◽  
Seasonal Effects ◽  
Soil Types ◽  
Soil Zone ◽  
Coefficients Of Variation ◽  
Oat Cultivars ◽  
Low Levels ◽  
Gray Soil

The concentration of Ca, P, Mg, K, Zn, Cu, Mn, Fe and Se were determined in wheat, barley and oat cultivars grown in four soil zones incorporating two soil types during a 5-yr period. Ca and K in Saskatchewan grains were much lower than published values, while Zn and Fe values were much higher. Se contents in each grain averaged 0.25 ppm and were substantially below values reported in the literature. Se and Cu levels were extremely variable (CV = 31–81%), but coefficients of variation (CV) for other minerals ranged from 9 to 35%. The effects of season, soil zone, soil type and cultivar on composition of Ca, P, Mg and K were significant in most grains. Seasonal effects on Zn, Cu, Mn and Fe were quite marked, but soil type had little effect and there were few significant differences between cultivars. Grain samples from Gray soil locations were characteristically high in Zn and low in Mn. Average Se content in grain from the Brown soil zone (0.39–0.55 ppm) was highest. There was a progressive decrease through the Dark Brown and Black soils to very low levels in samples from the Gray soil zone (0.06–0.07 ppm). In each type of grain, clay soils were associated with higher Se levels than loam soils.

Separation of serum high-density lipoprotein for cholesterol determination: ultracentrifugation vs precipitation with sodium phosphotungstate and magnesium chloride.

1981 ◽  
Vol 27 (6) ◽  
pp. 838-841 ◽  
Author(s):  
L Seigler ◽  
W T Wu
Keyword(s):  
High Density Lipoprotein ◽  
Magnesium Chloride ◽  
Density Lipoprotein ◽  
Cholesterol Content ◽  
Reference Intervals ◽  
High Density ◽  
Selective Precipitation ◽  
Serum High Density Lipoprotein ◽  
Coefficients Of Variation ◽  
Cholesterol Determination

Abstract We compared two methods for separation of serum high-density lipoprotein: selective precipitation with sodium phosphotungstate and magnesium chloride, and ultracentrifugation in sodium chloride solution (relative density 1.063). When the cholesterol content (determined enzymically with a centrifugal analyzer) of fractions obtained by each method was compared (ultracentrifugation = x), the correlation coefficient was 0.97; y = 1.01x - 11.2 mg/L; p less than 0.05; n = 54. The within-day and between-day coefficients of variation for this method were 1.1 and 4.0%, respectively. Reference intervals for high-density lipoprotein cholesterol in subpopulations categorized by age and sex were based on data obtained from volunteer blood donors.

scholarly journals Effect of Gender on Growth and Carcass Traits of Romney Marsh Lambs

2020 ◽  
Vol 68 (6) ◽  
pp. 959-963
Author(s):  
Jan Kuchtík ◽  
Leona Konečná ◽  
Monika Šeligová ◽  
Tomáš Kopec
Keyword(s):  
Birth Weight ◽  
Body Condition ◽  
Body Condition Score ◽  
Carcass Traits ◽  
Experimental Animals ◽  
Body Weights ◽  
Kidney Fat ◽  
Condition Score ◽  
Longissimus Lumborum ◽  
Carcass Conformation

The aim of present study was to assess the effect of the gender on growth and carcass traits in lambs of the Romney Marsh breed. The experimental animals were male lambs (n = 12) and female lambs (n = 12) of the Romney Marsh breed. All lambs were twins and all their mothers were on the second parity. With regard to body weights and daily gains (DGs), the gender had a significant effect only on birth weight and DG from birth to the slaughter, while in all monitored intervals the DGs were higher in male lambs (MLs). The lamb gender did not have a significant effect on the easy of lambing, body condition score, depth of musculus longissimus lumborum et thoracis (DMLLT) and thickness of backfat (TBF). However, values for DMLLT and TBF were higher in female lambs (FLs), which in case of DMLLT was not expected. Regarding the carcass traits, the gender had a significant effect only on the weights of kidney, kidney fat, leg and shoulder and on the proportions of kidney fat and shoulder. Interestingly, the gender had no significant effect on the conformation and fatness, while slightly better carcass conformation and slightly higher fatness were found in FLs. It can be concluded that FLs of the Romney Marsh breed showed comparable values for both the growth and carcass traits with MLs. Moreover, a slightly higher fatness of FLs is a prerequisite for better juiciness and tenderness of their meat, when this fact can be considered as a benefit in the marketing.

scholarly journals PERUBAHAN KOMPOSISI KIMIA KIJING LOKAL (Pilsbryoconcha exilis) SEGAR DAN KUKUS

Marinade ◽  
2020 ◽  
Vol 3 (02) ◽  
pp. 148-159
Author(s):  
Nurjanah Nurjanah ◽  
Agoes M. Jacoeb ◽  
Taufik Hidayat
Keyword(s):  
Amino Acids ◽  
Fatty Acids ◽  
Chemical Composition ◽  
Research Method ◽  
Mineral Content ◽  
Local Community ◽  
Saturated Fatty Acids ◽  
Amino Acid Content ◽  
Cholesterol Content ◽  
Low Cholesterol

Local mussel is a type of shellfish which is rich in minerals, fatty acids and essential amino acids and has a low cholesterol content. The local gravestone is currently only used as food by the local community which is processed by steaming. This study aims to determine the chemistry of the local gravestone. The research method used was morphometric, proximate analysis, amino acids using HPLC, fatty acids using GC, and minerals using AAS. The proximate results showed that the air and fat content decreased, while the ash, protein, and carbohydrate content increased due to the steaming process. Saturated fatty acids in local mussels tend to rise after steaming, except for palmitic which has decreased, while unsaturated fatty acids have decreased after steaming. Protein The salt-soluble content of local mussel is higher in air-soluble protein. The highest amino acid content is glutamic acid. The highest macro mineral content in local mussel meat is calcium 5,808.85 ppm, and the highest is sodium at 51.46 ppm, while the highest micro mineral is iron at 445.06 ppm, and the best is copper at 0.16 ppm . Generally, the chemical composition of local mussels on average decreased after the steaming process.

scholarly journals Structural and Technological Characterization of Tropical Smallholder Farms of Dual-Purpose Cattle in Mexico

Animals ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 86 ◽  
Author(s):  
Jaime Rangel ◽  
José Perea ◽  
Carmen De-Pablos-Heredero ◽  
José Antonio Espinosa-García ◽  
Paula Toro Mujica ◽  
...  
Keyword(s):  
Multiple Correspondence Analysis ◽  
Animal Health ◽  
Hierarchical Cluster ◽  
Small Scale ◽  
Smallholder Farms ◽  
Dual Purpose ◽  
Technological Adoption ◽  
Tropical Conditions ◽  
Dual Purpose Cattle ◽  
Group 5

Dual-purpose cattle smallholder farms (DP) exhibit a critical economic situation. The objective of this research was building a typology for DP in tropical conditions and characterizing them technologically. This will help developing more effective public policies in DP farms located in tropical conditions. A sample of 1.475 farms located in the tropical area of Mexico was selected. The typology was built using multiple correspondence analysis (MCA). Subsequently, five groups were identified by a hierarchical cluster analysis with Ward’s method. Groups 1 and 2, covered a 46.5% of the farms; these ones presented a small-scale productive model with low levels of technological adoption, improvements were mainly associated to the area of reproduction and genetics. Very small farms (Group 3) showed orientation to subsistence. They need to improve all the technological areas. Groups 4 and 5 (29.4% of the sample) were the biggest and more specialized farms. Group four farms were located in dry tropics and showed the highest levels of technological adoption in the areas of reproduction, management, and feeding. These farms require improvement in the areas of reproduction, animal health, and feeding. Group 5 farms were located in the wet tropics and showed specialization in reproduction, genetics, and animal health areas. In this last group, it is necessary to improve management and feeding areas.

Host-correlated morphological variation of Myzus persicae (Hemiptera: Aphididae) populations in Greece

2000 ◽  
Vol 90 (3) ◽  
pp. 233-244 ◽  
Author(s):  
J.T. Margaritopoulos ◽  
J.A. Tsitsipis ◽  
E. Zintzaras ◽  
R.L. Blackman
Keyword(s):  
Cluster Analysis ◽  
Host Plant ◽  
Morphological Variation ◽  
Myzus Persicae ◽  
Prunus Persica ◽  
Classification Tree ◽  
Hierarchical Cluster ◽  
Canonical Variate ◽  
Primary Host ◽  
The North

Morphological variation in nine characters of 157 clones of Myzus persicae(Sulzer) was examined by multivariate analysis. The clones were collected from peach, Prunus persica, the primary host and the secondary hosts tobacco, Nicotiana tabacum, cabbage, Brassica oleracea, sugarbeet, Beta vulgaris and pepper Capsicum annuum. The 156 clones originated from various regions of Greece, both in the north, where a large part of the population has an annual bisexual generation on peach, and in more southerly regions, where populations are predominantly unisexual. One clone was collected from tobacco in Caserta, Italy. All clones were laboratory-reared on potato. Canonical variate analysis, hierarchical cluster analysis and a non-parametric classification tree method both revealed morphological differences associated with the host-plant on which they were collected. The scores of the first two canonical variates separated the tobacco-feeding clones from those originating from other secondary host-plants. However, in tobacco-growing areas the tobacco-feeding form predominated in spring populations on peach, and was sometimes found on other secondary hosts. In addition, using cluster analysis, the clones from tobacco which were sampled in the most southeasterly region showed a relatively large phenotypic distance from those collected further north and west. Moreover, clonal phenotypes were affected both by host plant and by long-term parthenogenetic rearing. However, in spite of these effects, the tobacco form was generally distinguishable from aphids originating from other hosts, indicating that the difference must have a genetic basis. In separate analyses of the clones originating from secondary hosts no association was found between morphology and either life cycle category or colour. Discriminant analysis showed that 89% of 1723 specimens could be correctly classified into the two groups.

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