scholarly journals Meat quality of crossbred pigs with various percentage of Pietrain and Duroc breeds (E and U classes in the Europ system)

2021 ◽  
Vol 19 (4) ◽  
pp. 17-24
Author(s):  
Tadeusz Karamucki ◽  
◽  
Małgorzata Jakubowska ◽  
Keyword(s):  
Meat Quality ◽  
Total Protein ◽  
Dry Matter ◽  
Muscle Thickness ◽  
Group Iv ◽  
Large White ◽  
Group Iii ◽  
Group I ◽  
Longissimus Lumborum ◽  
Meat Samples

This study comprised 160 meat samples (m. longissimus lumborum) from 160 abattoir carcasses of pigs representing 4 groups of crossbreeds: group I – ♀ (Deutsche Landschwein × Deutsche Edelschwein) × ♂ (Pietrain), group II – ♀ (Polish Large White × Polish Landrace) × ♂ (Duroc × Pietrain), group III – ♀ (Polish Landrace) × ♂ (Duroc × Pietrain), group IV – ♀ (Landrace × Yorkshire) × ♂ (Duroc). Each group consisted of 40 carcasses (20 of which were each class E and U). After slaughter, hot carcass weight, backfat thickness, longissimus lumborum muscle thickness, and the percentage of meat in the carcass (Sydel CGM) were determined on the processing line, and after 48 hours in the laboratory – the colour characteristics of the meat (lightness – L*, redness – a*, yellowness – b*, chroma – C*, and hue angle – h°), water holding capacity (WHC), pH48, and the percentage of dry matter, total protein, fat, and ash. The highest a*, b* and C*, the lowest pH48, and the highest level of dry matter were found in meat from group I (50% Pietrain pigs). The lowest L*, lowest WHC, and the highest pH48 were found in meat from group IV (50% Duroc pigs). No significant differences were found between E and U classes in L*, h°, WHC, pH48, nor in the percentage of dry matter, total protein, fat, or ash in meat. In conclusion, meat quality characteristics were mainly significantly influenced by the type of commercial cross-breeding, and the influence of the class of carcass was mostly insignificant.

scholarly journals Effect of Piglet Birth Weight on Selected Characteristics of Pork

2014 ◽  
Vol 14 (4) ◽  
pp. 967-975 ◽  
Author(s):  
Anna Rekiel ◽  
Justyna Bartosik ◽  
Justyna Więcek ◽  
Martyna Batorska ◽  
Beata Kuczyńska ◽  
...  
Keyword(s):  
Birth Weight ◽  
Shear Force ◽  
Drip Loss ◽  
Large White ◽  
Group Iii ◽  
Group I ◽  
Longissimus Lumborum ◽  
Pig Meat ◽  
The Right ◽  
Age Determinations

Abstract The objective of the study was to determine how different birth weights of piglets influence some chemical and physical characteristics of pig meat. Piglets were grouped according to birth weight: ≤1.30 kg (group I), 1.31-1.70 kg (group II), ≥1.71 kg (group III). Animals were reared and fattened under standardized housing and feeding conditions. Tests were conducted with 60 samples of meat (20 per group) collected from the right side of the carcasses (M. longissimus lumborum) of threebreed crosses of (Polish Landrace × Polish Large White) × Duroc (barrows to gilts, 1:1), which were slaughtered at about 180 days of age. Determinations were made of basic chemical composition, colour of meat, drip loss, shear force value, and fatty acid profile. It was found that the birth weight of the piglets affects meat colour (redness), crude fat content and the proportion of some fatty acids (C16:1, C20:1 n-9, C20:2 n-6, C20:5 n-3).

scholarly journals Efficacy of Se-enriched Alga Chlorella spp. and Se-enriched Yeast on Tissue Selenium Retention and Carcass Characteristics in Finisher Pigs

2009 ◽  
Vol 78 (4) ◽  
pp. 579-587 ◽  
Author(s):  
Martin Svoboda ◽  
Alena Saláková ◽  
Zdeněk Fajt ◽  
Václav Kotrbáček ◽  
Radek Ficek ◽  
...  
Keyword(s):  
Meat Quality ◽  
Muscle Tissue ◽  
Carcass Characteristics ◽  
Basal Diet ◽  
Quality Characteristics ◽  
Group Iv ◽  
Finishing Pigs ◽  
Group Iii ◽  
Group I ◽  
Tissue Selenium

The aim of this study was to evaluate the effect of organic Se from Se-enriched alga (Chlorella spp.) and Se from Se-enriched yeast on concentrations of Se in serum and tissues, and serum GSH-Px activities and carcass characteristics in finishing pigs. The pigs were on experimental diets for a period of 3 months before slaughter with different Se supplements at the concentration of 0.3 mg Se per kg of feed. In group I (n = 12) the feed was supplemented with inorganic sodium selenite; in group II (n = 12) with organic Se from Se-enriched yeast; in group III (n = 12) with organic Se from Se-enriched alga, Chlorella spp. and pigs in group IV (n = 11) received a non-supplemented basal diet. The organic Se sources did not differ in serum Se and serum GSH-Px activities. Significantly higher Se concentrations in muscle (P < 0.01) and in the heart (P < 0.01) were found when Se from Se-enriched yeast was given, compared to the group of pigs that received Se from Se-enriched alga Chlorella spp. The Se content in livers and ovaries did not differ between the two organic Se sources. The use of both organic Se forms resulted in a higher accumulation in muscle tissue compared to the inorganic Se form. No differences in meat quality characteristics were found among the experimental groups. It is concluded that Se from Se-enriched alga, Chlorella spp. had a lower accumulation in muscle tissue than Se from Se-enriched yeast, and it did not affect meat quality.

scholarly journals The effect of genotype on muscle fibre characteristics of m. longissimus lumborum of fatteners

2007 ◽  
Vol 23 (5-6-2) ◽  
pp. 267-275 ◽  
Author(s):  
D. Wojtysiak ◽  
W. Migdał
Keyword(s):  
Muscle Fibre ◽  
Meat Consumption ◽  
Fibre Types ◽  
Muscle Fibre Types ◽  
Histochemical Analysis ◽  
Large White ◽  
Group Iii ◽  
Group I ◽  
Longissimus Lumborum ◽  
Fibre Characteristics

The aim of this study was to compare muscle histochemical composition in m. longissimus lumborum between different crossbreed fatteners. The research was carried out on 36 fatteners from three different crossbreed (12 animals in each) as follows: group I [?Duroc x Hampshire?], group II [?Polish Landrace x (Duroc x Hampshire)?] and group III [?(Polish Landrace x Polish Large White) x (Duroc x Hampshire)?]. For histochemical analysis of muscle fibre types the activity of dehydrogenase NADH2 (diaphorase) was detected using specific histochemical testes. The results of the current histochemical investigations showed that genotypes of fatteners can influence on histochemical composition of the muscle fibre types - especially on percentage and size of muscle fibre. These changes can have some influence on meat consumption quality.

scholarly journals Supplementation effect of medicinal plant leaves on growth in crossbred calves

2020 ◽  
Vol 34 (03) ◽  
Author(s):  
Ritu Raj ◽  
Anshu Rahal ◽  
Anil Kumar ◽  
S. K. Singh
Keyword(s):  
Body Weight ◽  
Dry Matter ◽  
Group Iv ◽  
Dry Matter Intake ◽  
Tinospora Cordifolia ◽  
Control Group ◽  
Mentha Arvensis ◽  
Group Iii ◽  
Group I ◽  
Group Ii

Effect of supplementing giloy (Tinospora cordifolia) and mint (Mentha arvensis) on feed intake and body weight was studied in twenty crossbred calves. While Group I was taken as control, Group II was supplemented with Tinospora cordifolia @ 4% of concentrate, group III with Mentha arvensis @ 4% of concentrate and group IV with both Tinospora cordifolia and Mentha arvensis @ 2% of concentrate each. Significantly higher(P 0.05) dry matter intake(Kg) and dry matter intake(g)/W 0.75Kg in group III was recorded compared to control while group II did not differ from group IV. Significantly higher body weight gain was noticed in group IV compared to other groups. Giloy and/or mint can be fed to improve growth in crossbred calves.

scholarly journals Meat quality of Pulawska breed pigs and image of longissimus lumborum muscle microstructure compared to commercial DanBred and Naima hybrids

2020 ◽  
Vol 63 (2) ◽  
pp. 293-301
Author(s):  
Anna Kasprzyk ◽  
Joanna Bogucka
Keyword(s):  
Meat Quality ◽  
Chemical Properties ◽  
Biological Properties ◽  
Meat Production ◽  
Muscle Fibres ◽  
Group Iii ◽  
Group I ◽  
Mineral Components ◽  
Longissimus Lumborum ◽  
Fast Twitch

Abstract. The objective of this article was the evaluation of selected properties of meat quality including the characteristics of longissimus lumborum (LL) muscle microstructure of Pulawska breed pigs and fatteners of the DanBred and Naima hybrids which are used in national meat production. Three genetic groups of fatteners were studied in the experiment: group I – DanBred hybrid; group II – Naima hybrid; and group III – the Pulawska breed. Pig fattening took place under the same environmental conditions from the starting weight of 30 kg ± 2 kg to 103–105 kg. For the analysis of muscle fibre characteristics and meat quality from each group, 30 animals were selected ( 1:1 ). Physico-chemical properties and ultrastructure were evaluated in samples collected from the LL muscle. A statistically significant impact (P<0.01) of a genetic group on pH45, content of water, protein and ash, as well as on the colour of meat, the number of STOs (slow-twitch oxidatives) and the diameter of FTG (fast-twitch glycolytic) muscle fibres, was found. Meat of the Pulawska breed, compared to DanBred and Naima, showed a statistically significant (P<0.01) higher (by 2.05 % and 2.49 %, respectively) nutritional value expressed as protein content and mineral components. Overall, these results imply better biological properties of Pulawska meat than DanBred and Naima hybrids. The higher STO and lower FTG found in muscles from Pulawska pigs might partially explain meat quality differences found between the breeds in the present study. The data of the current study indicated that meat quality characteristics and muscle microstructure of fatteners showed differences, and these differences may be used for alternative pork meat production for the consumer.

Analysis of surface conditioning methods on core-veneer bond strength of CAD/CAM zirconia restorations

2020 ◽  
pp. 1-11
Author(s):  
Anip K. Roy ◽  
Govind N. Prasad ◽  
Tushar V. Bhagat ◽  
Saurabh Chaturvedi ◽  
Vishwanath Gurumurthy ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Bond Strength ◽  
Shear Bond Strength ◽  
Group Iv ◽  
Control Group ◽  
Group Iii ◽  
Surface Conditioning ◽  
Group I ◽  
Alumina Particles ◽  
Scanning Electron

BACKGROUND: The increased strength of zirconia has resulted in its widespread application in clinical dentistry. Nevertheless, the fracture of veneering porcelains remains one of the key reasons of failure. OBJECTIVE: The objective of this study was to compare and analyze the influence of surface conditioning methods on the core-veneer bond strength of zirconia restorations. METHODS: Thirty specimens of zirconia core with sizes 10 × 5 × 5 mm were layered with porcelain of sizes 5 × 3 × 3 mm. On the basis of different surface conditioning methods, four groups were made: Group I: abrasion with airborne alumina particles of 110 μm size, Group II: sandblasting with silica coated alumina particles of 50 μm in size, Group III (modified group): alteration with a coating of zirconia powder prior to sintering, and Group IV (control group): metal core specimens. The shear force of all specimens was tested using a universal testing machine with a 0.5 mm/min crosshead speed. One-way analysis of variance (ANOVA) and Tukey’s post hoc pair wise comparison (p= 0.05) were performed to analyze the shear bond strength. A scanning electron microscope was used to assess the fractured specimens. RESULTS: A statistically significant difference was noted between the groups. The mean value of shear bond strength was 40.25 MPa for Group I, 41.93 MPa for Group II, 48.08 MPa for Group III and 47.01 MPa for Group IV. CONCLUSIONS: The modified zirconia group and control group demonstrated a significantly higher mean bond strength than that of Group I, where airborne particle abrasion was used. The scanning electron microscope showed that cohesive fracture in the porcelain veneers was the main problem of failure in altered zirconia. The modified zirconia specimens in Group III demonstrated significantly improved values of shear bond strength.

scholarly journals Meat quality and fatty acid profile of the musculus longissimus lumborum in Czech Fleckvieh, Charolais and Charolais × Czech Fleckvieh bulls fed different types of silages

2010 ◽  
Vol 55 (No. 11) ◽  
pp. 479-487 ◽  
Author(s):  
L. Bartoň ◽  
D. Bureš ◽  
V. Kudrna
Keyword(s):  
Fatty Acid ◽  
Meat Quality ◽  
Fatty Acid Profile ◽  
Dry Matter ◽  
Intramuscular Fat ◽  
Quality Parameters ◽  
Dietary Energy ◽  
Maize Silage ◽  
Different Types ◽  
Longissimus Lumborum

The effects of breed and diet containing different types of silages on meat quality parameters and fatty acid profile of m. longissimus lumborum (MLL) were evaluated in a total of 30 Czech Fleckvieh (CF), Charolais (CH) and Charolais &times; Czech Fleckvieh (CH &times; CF) bulls. The animals were fed two mixed diets: MS (based on maize silage) and LCS (based on legume-cereal mixture silage and lucerne silages) with different concentrations of dietary energy and fatty acids. The MLL from CH bulls had the lowest content of dry matter (P &lt; 0.01), less protein (P &lt; 0.01) and lighter meat (P &lt; 0.01) compared to the CF. The extensive LCS diet reduced dry matter (P &lt; 0.01) and intramuscular fat (P &lt; 0.01) and increased the content of hydroxyproline (P &lt; 0.05). The CH bulls exhibited higher PUFA n-3 (P &lt; 0.05) and lower MUFA (P &lt; 0.05) compared to the CF, with the CH &times; CF being intermediate. The LCS diet enhanced the proportions of PUFA (P &lt; 0.05) and PUFA n-3 (P &lt; 0.001) and reduced MUFA (P &lt; 0.001). In conclusion, both breed and diet affected the meat quality and fatty acid profile of the intramuscular fat of the bulls. The replacement of maize silage with the legume-cereal mixture and lucerne silages in the diet reduced the concentration of intramuscular fat and improved its fatty acid profile from the human nutrition perspective.

scholarly journals Effect and mechanisms of reproductive tract infection on oxidative stress parameters, sperm DNA fragmentation, and semen quality in infertile males

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Kang-Sheng Liu ◽  
Xiao-Dong Mao ◽  
Feng Pan ◽  
Rui Fang An
Keyword(s):  
Reproductive Medicine ◽  
Reproductive Tract ◽  
Group Iv ◽  
Semen Parameters ◽  
Group Iii ◽  
Reproductive Tract Infection ◽  
Group I ◽  
Sperm Dna ◽  
Group Ii ◽  
Elastase Level

AbstractRecent years have seen a rising incidence of male infertility, mostly caused by the decline of sperm quality. The ratio of infertile males to infertile females has escalated from 3:7 in 2013 to current 5:5, which turns male infertility into the research focus of reproductive medicine. This study aimed to clarify the effect of reproductive tract infection by ureaplasma urealyticum (UU) and chlamydia trachomatis (CT) on the DNA integrity and routine semen parameters of infertile males. A retrospective study was performed. A total of 259 infertile males who were treated at the Andrological Laboratory Examination and Reproductive Medicine Center in our hospital were analyzed. qRT-PCR was used to examine the infection status of CT and UU. According to the eligibility criteria, we evaluated the semen parameters and biochemical data of 253 men. Based on the results of PCR, the subjects were divided into four groups: Group I (CT positive, 63 cases), Group II (UU positive, 60 cases), Group III (CT positive and UU positive, 62 cases), and Group IV (no infection, 68 cases). DNA fragmentation index (DFI), sperm count, vitality and morphology, elastase level, seminal plasma malondialdehyde (MDA), and total antioxidant capacity (TAC) were assessed. Compared to Group IV, three groups (Group I, Group II and Group III) showed difference in semen volume, proportion of sperm with normal morphology, sperm motility, progressive motility, and vitality (P < 0.05). Compared to Group IV, Group II and Group III showed difference in DFI (P < 0.05). Compared to Group IV, Group II and Group III showed difference in elastase level (P < 0.05). VCL, VSL, VAP, WOB, ROS, TM, HDS showed differences between groups of abnormal/normal WBC (*P < 0.01).UU infection significantly increased the level of seminal leukocytes only in Group II, but not in the other three groups, indicating that UU is a factor to increase the level of seminal leukocytes. Compared with the normal leukocyte group, there were significant differences in total motility, forward motility and normal sperm ratio between the two groups. The proportion of sperm with abnormal morphology (mostly in the head) showed obvious difference between groups of high and normal seminal leukocytic levels. At the same time, in this study, SCGE and SCD verified that leukocytes could damage sperm DNA by increasing ROS, which ultimately affects male fertility.

A Study on the Effect of Samoa Extract (Cleome droserifolia) on Sperm Quality in Male Albino Rats Exposed to Pyrethroid

2021 ◽  
pp. 39-45
Author(s):  
Nura I. Al-Zail ◽  
Salah F. Kamies
Keyword(s):  
Sperm Quality ◽  
Group Iv ◽  
Male Rats ◽  
Control Group ◽  
Albino Rats ◽  
Protective Agent ◽  
Group V ◽  
Group Iii ◽  
Group I ◽  
Induced Changes

Pyrethroid cyhalothrin (PC) is an insecticide that is used worldwide for pest control in agriculture and household use. Samoa extract (SE) is a potent antioxidant protecting cells from oxidative stress. The present study investigates the protective and therapeutic effect of SE on PC-induced changes in sperm quality in male rats. Fifty adult male albino rats were divided into five groups: group I: served as control; group II: received PC i.p. only (6.2 mg/kg b.wt.); group III: received SE only (100 mg/kg b.wt., p.o.) for eight weeks; group IV: received SE as a protective agent daily for eight weeks, then followed by the administration of PC (i.p.) three times a week for two weeks; group V: exposed to PC (i.p.) three times a week for two weeks, then treated with the SE daily for 8 weeks. Results showed that PC caused markedly impaired sperm quality (a count, viability, motility, and abnormality). Compared to PC-treated animals, SE in the protective group markedly restored the alteration of sperm indices. However, SE in the curative group was found to be less effective in restoring PC-induced alterations. In conclusion, the data of this study revealed that the SE as a protective agent is more effective than as a therapeutic agent. Keywords: Samoa; Pyrethroid; Sperm quality; Rat

scholarly journals Effects of supplementary vegetable and animal fats on the slaughter values of fatteners, meat quality, and fatty acid profile in pigs

2013 ◽  
Vol 58 (No. 11) ◽  
pp. 497-511 ◽  
Author(s):  
D. Lisiak ◽  
E. Grześkowiak ◽  
K. Borzuta ◽  
S. Raj ◽  
P. Janiszewski ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Meat Quality ◽  
Energy Content ◽  
Subcutaneous Fat ◽  
Fish Oils ◽  
Triceps Brachii ◽  
Large White ◽  
Animal Fats ◽  
Diet Supplements ◽  
Longissimus Lumborum

The study was conducted on 32 hybrids of (Polish Large White &times; Danish Landrace) &times; Duroc breeds fed similar energy content feed, however differing in fat diet supplements. The animals were divided into four groups in which the following fat supplements were added to the feed: A &ndash; rapeseed and linseed oils, B &ndash; rapeseed and fish oils + swine fat, C &ndash; linseed and fish oils, D &ndash; rapeseed and linseed oils + lard. The carcass slaughter value was estimated and physicochemical and sensory traits of longissimus lumborum (LL) and triceps brachii (TB) muscles were determined. The content of fatty acids in the subcutaneous fat of the loin as well as in the raw LL and TB muscles was estimated as well. It was shown that there were no significant differences in the range of slaughter value traits and meat quality between the groups. However, it was found that different kinds of supplemented fat had a different effect on the content of the polyunsaturated fatty acids in the backfat and in the raw LL muscle. The lowest level of fatty acids characterized the group of pigs fed with supplements consisting of rapeseed and fish oils + lard. The highest values were detected among fatteners supplemented with linseed. The kind of supplemented fat affected the changes in the level of PUFA n-3 fatty acids, especially the linolenic acid C18:3 in backfat. The n-6/n-3 ratio in pigs fed with a greater share of linseed (C and D groups) was better (about 3) than in pigs which obtained a greater portion of rapeseed and fish oils (about 5.5). In both the muscles and fat of fatteners from groups B and C the DHA content was 2&ndash;3 times higher than in A and D groups. Higher EPA content was found in the TB muscle. &nbsp;

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