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 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 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.

Inhibition of cardiac vagal component of baroreflex by group III and IV afferents

1991 ◽  
Vol 260 (3) ◽  
pp. H730-H734 ◽  
Author(s):  
P. N. McWilliam ◽  
T. Yang
Keyword(s):  
Peroneal Nerve ◽  
Baroreceptor Reflex ◽  
Interval Prolongation ◽  
Group Iii ◽  
Control Value ◽  
Pressure Elevation ◽  
Group I ◽  
Afferent Fibers ◽  
The Difference ◽  
The Right

The action of electrically evoked activity in somatic afferent fibers on the sensitivity of the baroreceptor reflex was examined in decerebrate cats. The sensitivity of the reflex was expressed as the difference between the maximum prolongation of R-R interval in response to carotid sinus pressure elevation and the mean of 10 R-R intervals immediately before pressure elevation. The control value of R-R interval prolongation was 192 +/- 50 ms. Stimulation (10 Hz) of group I and II fibers of the right peroneal nerve (evoked volleys recorded from the sciatic nerve) had no effect on R-R interval prolongation (171 +/- 45 ms). Recruitment of group III fibers (10 Hz) conducting at 23.6 +/- 0.65 m/s reduced the prolongation of R-R interval to 52 +/- 14 ms. Recruitment of group IV fibers (10 Hz) conducting less than 2.5 m/s further reduced the prolongation of R-R interval to 1.0 +/- 8.0 ms. It is concluded that the inhibition of the cardiac vagal component of the baroreceptor reflex produced by electrical stimulation of the peroneal nerve is mediated by afferent fibers of groups III and IV.

Variability of the IGF2 locus in the Suino Nero Lucano pig population and its effects on meat quality

2018 ◽  
Vol 58 (11) ◽  
pp. 1976 ◽  
Author(s):  
Amalia Simonetti ◽  
Andrea Rando ◽  
Paola Di Gregorio ◽  
Carmelisa Valluzzi ◽  
Annamaria Perna ◽  
...  
Keyword(s):  
Meat Quality ◽  
Shear Force ◽  
Quality Characteristics ◽  
Porcine Insulin ◽  
Drip Loss ◽  
Fat Percentage ◽  
Promoter Regions ◽  
Igf2 Gene ◽  
Longissimus Lumborum ◽  
L Value

The aim of this study was to analyse the polymorphisms in the two promoter regions, P1 and P2, of the porcine Insulin-like Growth Factor 2 (IGF2) gene and to investigate the effect of IGF2 genotypes on meat quality traits in the Italian autochthonous Suino Nero Lucano pig. Three polymorphic sites were analysed and only two of the eight potential haplotypes were observed in the Suino Nero Lucano pig population: A haplotype (–366A – –225G – –182C), and B haplotype (–366G – –225C – –182T). Muscle mass and meat quality characteristics were analysed in 30 castrated pigs (10 for each of the three IGF2 genotypes: A/A, A/B, and B/B). According to the results, B/B animals, at the same carcass weight, showed the highest Longissimus lumborum and Psoas weight (P < 0.05), whereas A/A animals showed a higher intramuscular fat percentage and lower Warner–Bratzler shear force, drip loss, and polyunsaturated fatty acids content. Meat from B/B animals showed also a higher L* value and myoglobin and deoxymyoglobin percentage compared with meat from A/A ones (P < 0.05).

scholarly journals Effects of nano mineral-supplemented diet on sow productivity

2019 ◽  
Vol 41 (4) ◽  
Author(s):  
Hoang Nghia Son
Keyword(s):  
Birth Weight ◽  
Reproductive Performance ◽  
Metal Content ◽  
Mineral Content ◽  
Control Group ◽  
Average Weight ◽  
Group Iii ◽  
Newborn Piglets ◽  
Group I ◽  
Significant Difference

This study aimed to evaluate the effects of nano mineral-supplemented diet on sow productivity. The data were estimated by several parameters consisting of piglet live ratio at newborn stage and weaning stage, piglet weight at newborn stage and weaning stage, metal content in piglet livers. The results showed that live ratio of newborn piglets in group III was highest (93.44 ± 2.83%) comparing with other groups. However, there was no significant difference of live ratio in piglets at weaning stage between nano mineral-supplemented groups with control. The birth weight of piglets in nano mineral-supplemented groups was similar to control group. The birth weight of piglets in nano mineral-supplemented groups was ranged from 1,361.61 ± 47.37 grams (group II) to 1,410.48 ± 44.28 grams (group I). However, the average weight of weaned pigs in groups III and IV was higher than other groups (6,772.92 ± 105.47 grams and 6,818.87 ± 89.59 grams). Moreover, the amount of Fe, Cu, Zn, Mn in piglet liver from nano mineral-supplemented groups have been found to be lower than those in control group. These results revealed that the supplement of nano minerals for sows promoted the reproductive performance of sows and reduced mineral content in the liver of piglets. 

Atrioventricular responses of canine heart following chronic unilateral vagotomy

1987 ◽  
Vol 253 (2) ◽  
pp. H394-H401 ◽  
Author(s):  
D. V. Priola ◽  
C. Anagnostelis ◽  
C. Sanchez-Wilson ◽  
T. M. Blomquist
Keyword(s):  
Frequency Response ◽  
Control Mechanisms ◽  
Canine Heart ◽  
Response Curves ◽  
Group Iii ◽  
Group I ◽  
Group Ii ◽  
The Right ◽  
Inotropic Responses ◽  
Intrinsic Cardiac Nerves

The intrinsic cardiac nerves (ICN) have been shown to develop supersensitivity to nicotine (NIC) following complete extrinsic cardiac denervation. The present experiments were performed to delineate the pattern of ICN distribution in the heart by examining the pattern of NIC supersensitivity after unilateral vagotomy (VGX). Thirty-eight dogs were placed on cardiopulmonary bypass and inotropy evaluated by means of isovolumic pressures from fluid-filled balloons placed in the atria and ventricles. The animals were divided into three groups: group I, sham-operated controls; group II, animals studied 1–2 wk after VGX; and group III, animals studied 8–12 wk after VGX. Chronotropic and inotropic responses were evaluated in terms of NIC and acetylcholine (ACh) dose-response curves as well as frequency-response curves to stimulation of the intact vagus nerve (0.5–30 Hz). No change in NIC sensitivity was observed in group II, and vagal frequency-response curves were identical to group I. In group III dogs, both the right atrium and right ventricle showed significant increases in NIC sensitivity after left vagotomy. All group III animals showed right-shifted frequency-response curves. We conclude that nicotinic supersensitivity of the ICN and inotropic unresponsiveness to vagal stimulation occur but are slow in developing (70–130 days); and preganglionic sprouting does not appear to play a functional role in the adjustment of cardiac control mechanisms to unilateral vagotomy.

scholarly journals BONE INDUCTION BY BMP-2 EXPRESSING ADENOVIRAL VECTOR IN RATS UNDER TREATMENT WITH FK506

2002 ◽  
Vol 06 (01) ◽  
pp. 23-29 ◽  
Author(s):  
Junya Sonobe ◽  
Kazuhisa Bessho ◽  
Shinji Kaihara ◽  
Yasunori Okubo ◽  
Tadahiko Iizuka
Keyword(s):  
Adenoviral Vector ◽  
Host Immunity ◽  
Bone Morphogenetic Protein 2 ◽  
Control Group ◽  
Group Iii ◽  
Group I ◽  
Morphogenetic Protein ◽  
Human Bone Morphogenetic Protein ◽  
The Right

The purpose of this study was to investigate the effectiveness of human bone morphogenetic protein-2 (BMP-2) expressing adenoviral vector in vivo. The day before vector injection, immunosuppressant FK506 was given subcutaneously to each rat at doses of 12 mg/kg (Group I), 6 mg/kg (Group II) and 3 mg/kg (Group III). FK506 was not administered to the six rats of the control group. Twenty-five liters of AXCAOBMP-2 (3.93 × 109pfu/ml) were injected into the right calf muscle of all rats. On day 21 after vector injection, all groups were investigated radiologically, histologically, and biochemically. Osteoinduction was seen in the AxCAOBMP-2-injected groups with immunosuppression. However, no bone formation was observed in the control group. These findings suggest that AxCAOBMP-2 has the potential of osteoinduction under transient immunosuppression. AxCAOBMP-2 may be useful for future clinical application in bone reconstruction, if host immunity response can be regulated.

scholarly journals Comparison of clinical, biomechanical, and histopathological effects of various suture techniques on repair of tendon rupture by using autograft

2017 ◽  
Vol 61 (2) ◽  
pp. 231-237
Author(s):  
Celal Şahin Ermutlu ◽  
Vedat Baran
Keyword(s):  
Good Alternative ◽  
Suture Technique ◽  
Suture Techniques ◽  
Tissue Loss ◽  
Group Iii ◽  
Interrupted Suture ◽  
Group I ◽  
Tendon Ruptures ◽  
The Right ◽  
And Control

AbstractIntroduction: The purpose of this study was to compare the effectiveness of four different suture techniques in the treatment of experimentally modelled tendon injuries with tissue loss with autograft and grafting applications in rabbits.Material and Methods: The study was performed on 30 male mature (2-year-old) New Zealand rabbits with mean body weight of 3.1 kg, divided into three equal groups. A graft measuring 1 cm in length was collected from the m. tibialis cranialis of each rabbit under general anaesthesia. The graft collected from the right tendon was transplanted into the left tendon, and the graft from the left tendon was transplanted into the right tendon. In all groups, a simple interrupted suture was placed on the left tendon as control, a Bunnell-Mayer suture was placed on the right tendon in group I, a Locking-Loop suture in group II, and a Horizontal U suture in group III. Both hindlimbs were bandaged for four weeks. The tendons were assessed biomechanically and histopathologically.Results: According to the results of the tensile testing, the maximum durability of the techniques ranked as follows: Bunnell-Mayer, Horizontal U, Locking-Loop, and control groups.Conclusion: The use of autografts was a good alternative for the treatment of tendon ruptures with tissue loss. Furthermore, even though there were no clinical or histopathological differences, the suture technique can be chosen based on the results of the tensile test.

scholarly journals Comparison of Lyophilized Glutaraldehyde-Preserved Bovine Pericardium with Different Vascular Prostheses for Use as Vocal Cords Implants: Experimental Study

2015 ◽  
Vol 2015 ◽  
pp. 1-9
Author(s):  
J. Raúl Olmos-Zuñiga ◽  
Rogelio Jasso-Victoria ◽  
Miguel Gaxiola-Gaxiola ◽  
Avelina Sotres-Vega ◽  
Claudia Hernández-Jiménez ◽  
...  
Keyword(s):  
Experimental Study ◽  
Inflammatory Reaction ◽  
Canine Model ◽  
Bovine Pericardium ◽  
Vocal Cords ◽  
Vascular Prostheses ◽  
Group Iii ◽  
Synthetic Materials ◽  
Group I ◽  
The Right

This study compared the use of lyophilized glutaraldehyde-preserved bovine pericardium (LGPBP), polytetrafluoroethylene (PTFE), polyethylene terephthalate (PET), and Teflon felt (TF) as implants for vocal cords (VC) medialization and aimed to assess the endoscopic, macroscopic, and microscopic VC changes after medialization in a canine model. In 18 mongrel dogs, the right VC were medialized with LGPBP and the left were implanted as follows: Group I (n=6): LGPBP and PTFE; Group II (n=6): LGPBP and PET; Group III (n=6): LGPBP and TF. Surgical handling of the implants was compared. Three months after surgery, macroscopic and microscopic changes of VC and implants were evaluated. LGPBP offered the best surgical handling (p=0.005, Kruskal-Wallis). TF implants showed extrusion (p=0.005, Kruskal-Wallis) and severe inflammation. All VC formed fibrous capsules around the implants; the ones developed by LGPBP implants were thinner (p=0.001, ANOVA, Tukey). VC implanted with synthetic materials showed eosinophilic infiltration (p=0.01, Kruskal-Wallis). We concluded that the LGPBP could be used as an implant for VC medialization because it is biocompatible, easy to handle and remove during surgical procedures, and nonabsorbable or extrudable and produces an inflammatory reaction similar to PTFE and PET.

scholarly journals Association of Foetal Outcome with Maternal Body Mass Index (BMI)

2020 ◽  
pp. 65-76
Author(s):  
Tanzina Iveen Chowdhury ◽  
Tasrina Rabia Choudhury
Keyword(s):  
Birth Weight ◽  
Perinatal Outcome ◽  
Group Iv ◽  
Maternal Body Mass Index ◽  
Group Iii ◽  
Group I ◽  
Foetal Outcome ◽  
Group Ii ◽  
Nicu Admission ◽  
Maternal Bmi

Background: The worldwide obesity epidemic continues to be a major public health challenge, particularly in women of childbearing age. There is a need to understand the associations between maternal BMI and perinatal outcome. Objectives: To evaluate recent trends in maternal body mass index (BMI) and to quantify its association with foetal outcome. Methodology: It is a cross sectional study including a total of 384 pregnant women who were primi gravida and carry singleton pregnancy admitted at term in the department of Obstetrics and Gynaecology of DMCH for the management of labour. All the mothers were chosen by purposive sampling. The study populations were classified into four groups according to BMI. Group-I stands for 44 mothers who are underweight, Group-II consists of 234 mothers who are normal weight, Group III represents to 81 mothers who are overweight and Group IV signifies for 25 mothers who are obese. The women with multiple pregnancies, preterm labour and hypertension or diabetes were excluded from the study. Data regarding socio demographic, clinical, obstetrical and foetal outcome were recorded, afterwards the data were edited, managed and analyzed. The observations were plotted into tabular and figure form. The categorical variable was analyzed by chi square test and the quantitative variables were analyzed by ANOVA test. At all level 95% confidence interval & level of significance was p <0.05. The statistical analysis was done by SPSS version 23. Results: The mean BMI of mothers in different groups (Group I, Group II, Group III and Group IV) were 18.37±1.06 kg/m2, 23.77±2.03 kg/m2, 26.54±2.47 kg/m2 and 32.15±1.17 kg/m2 respectively. The average BMI of total 384 mothers was 22.75±4.56 kg/m2. The highest 84% newborn had birth weight >2.5 kg in Group IV whereas 72.7% had ≤2.5 kg birth weight in Group I. Maximum (57%) mothers underwent NVD in Group I as long as the paramount (71%) mothers endured LSCS in Group III. Out of 384, total 180(46.9%) mothers had NVD and 204(53.1%) mothers deferred LSCS. APGAR score ≤7 was found 31.8%, 12.8%, 38.3% and 20% in Group I, Group II, Group III and Group IV independently. The P-value showed statistically significant of the groups (P=0.00016). Among 204 LSCS, 167(81.9%) mother sustained emergency and 37(18.1%) undertook elective LSCS. 52.9% of mothers went through LSCS were due to meconium staining liquor in Group IV which was subsequently followed by 46.6% in Group-III. 25.0%, 9.8%, 32.1% and 16% neonates required NICU admission in Group I, Group II, Group III and Group IV severally. There was a moderately positive significant correlation between maternal BMI and neonatal birth weight (r=+.383, p<0.001). All the statistics of requirements of NICU between one another group showed statistically significant difference. Conclusion: Our study shows that maternal BMI has an effect on foetal outcome. Low BMI is associated with adverse perinatal outcome in terms of low birth weight while high BMI is associated macrosomia, LSCS and neonatal NICU admission. Regarding NICU requirements overweight mothers had more association with foetal outcome rather than obese. Therefore, definitely there is a role of pre pregnancy counseling regarding maintenance of weight of women especially during reproductive age group to maintain normal BMI as to have better perinatal outcome.

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