Effects of water-misting sprays with forced ventilation on post mortem glycolysis, AMP-activated protein kinase and meat quality of broilers after transport during summer

2015 ◽  
Vol 87 (5) ◽  
pp. 718-728 ◽  
Author(s):  
Nannan Jiang ◽  
Tong Xing ◽  
Minyi Han ◽  
Shaolin Deng ◽  
Xinglian Xu
Keyword(s):  
Protein Kinase ◽  
Meat Quality ◽  
Post Mortem ◽  
Forced Ventilation ◽  
Amp Activated Protein Kinase

Pre-slaughter transport, AMP-activated protein kinase, glycolysis, and quality of pork loin

Meat Science ◽  
2006 ◽  
Vol 74 (2) ◽  
pp. 388-395 ◽  
Author(s):  
Q.W. Shen ◽  
W.J. Means ◽  
S.A. Thompson ◽  
K.R. Underwood ◽  
M.J. Zhu ◽  
...  
Keyword(s):  
Protein Kinase ◽  
Pork Loin ◽  
Amp Activated Protein Kinase

scholarly journals PSVI-1 Improvement of gut morphology and meat quality of broiler chickens by encapsulated citral and cinnamaldehyde

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 195-195
Author(s):  
Chongwu Yang ◽  
Janghan Choi ◽  
Marion Mogire ◽  
Argenis Rodas-González ◽  
Moussa S Diarra ◽  
...  
Keyword(s):  
Growth Performance ◽  
Meat Quality ◽  
Ph Value ◽  
Basal Diet ◽  
Positive Control ◽  
Negative Control ◽  
Intestinal Morphology ◽  
Post Mortem ◽  
Gut Morphology

Abstract This study investigated the effects of encapsulated citral (CIT) and cinnamaldehyde (CIN) on growth performance, intestinal morphology and meat quality in broilers. A total of 320 0-day-age male broilers (Cobb 500) were allocated 32 pens with 8 pens per treatment. The treatments included: 1) Corn-wheat-SBM basal diet (negative control); 2) basal diet with 30 ppm avilamycin premix (positive control); 3) basal diet with 50 ppm encapsulated CIT and CIN (CCL); 4) basal diet with 100 ppm encapsulated CIT and CIN (CCH). There were no significant differences between treatments in growth performance (P > 0.05) at each feeding stage. Additionally, birds had similar relative organ weights of heart, liver, spleen and bursa (P > 0.05). The higher ratios of villus height to crypt depth (VCR; P ≤ 0.05) were detected in broilers fed either CCL or CCH, with an average being 14.67 and 15.13 in the duodenum, and 15.13 and 13.58 in the jejunum, respectively. Regarding meat quality, a higher pH value (pH = 6.21) in the breast was observed in 24-h post mortem chickens fed CCL (P ≤ 0.05). No significant differences of pH were detected in the breast in 96-h post mortem birds. The breast color (redness, yellowness, and lightness) in either 24-h or 96-h post mortem chickens was not significantly different among treatments (P > 0.05). No change in purge loss (%) was observed in the breast after 48 h. The severity of white striping (WS) or woody meat (WB) was higher in the positive control (WS = 0.58; WB = 0.15) than in other treatments (P ≤ 0.05). In conclusion, dietary treatment with encapsulated CIT and CIN improved gut morphology and meat quality of broilers by increasing VCR in the small intestine and reducing the severity of WS/WB in the breast, respectively, without affecting growth performance.

Effectson carcass weight and meat quality of pigs dehaired by scalding or singering post-mortem

Meat Science ◽  
1995 ◽  
Vol 39 (2) ◽  
pp. 247-254 ◽  
Author(s):  
G. Monin ◽  
A. Talmant ◽  
P. Aillery ◽  
G. Collas
Keyword(s):  
Meat Quality ◽  
Carcass Weight ◽  
Post Mortem

scholarly journals Comparison of the effects of different transport conditions and lairage times in a Mediterranean climate in South Africa on the meat quality of commercially crossbred Large white x Landrace pigs

2010 ◽  
Vol 81 (4) ◽  
Author(s):  
L.C. Hoffman ◽  
P. Fisher
Keyword(s):  
South Africa ◽  
Meat Quality ◽  
Drip Loss ◽  
Western Cape ◽  
Post Mortem ◽  
Energy Reserves ◽  
Road Transportation ◽  
Large White ◽  
Ambient Temperatures

Information on the effect of road transportation conditions and lairage times on the meat quality of pork under South African conditions is very sparse. In this investigation, the effects of 2 road conditions (rough road with frequent stops -A; smooth road, few stops - B) and 2 lairage holding periods (2 h and 24 h) on the physical meat quality attributes of commercially produced pigs during summer (ambient temperatures >30 °C) in the Western Cape (South Africa) were investigated. Pig meat from pigs transported on a road that caused more stress (A), had lower pH45 (measured 45 min post mortem) values after 2 h lairage than pigs transported over a smoother road. Pigs B had a lower muscle pH24 (measured 24 h post mortem) than group A, indicating that they had more glycogen reserves available for post mortem glycolysis. Road conditions A were more stressful resulting in a higher incidence of PSE pork, as shown by the percentage drip loss and the L* values. When the lairage period was increased to 24 h prior to slaughter, pigs transported under road conditions A had time to replenish their energy reserves and thepH45, drip loss and L* values were within an acceptable range. However, pigs transported under road conditions B had lower pH45 and higher pH24 values, indicating that the lairage period was too long and that energy reserves were depleted in order to adapt to the stressful conditions. Results from this investigation indicate that improvement of the transport/road conditions will result in better pork quality.

Ante-and post-mortem strategies to improve the meat quality of high-value muscles harvested from farmed male common eland (Taurotragus oryx)

Meat Science ◽  
2020 ◽  
Vol 168 ◽  
pp. 108183 ◽  
Author(s):  
Tersia Needham ◽  
Radim Kotrba ◽  
Louwrens C. Hoffman ◽  
Daniel Bureš
Keyword(s):  
Meat Quality ◽  
Post Mortem

scholarly journals Comparison of meat quality from Naïma and DanBred hybrid sows mated with P-76 boars

2022 ◽  
Vol 52 (1) ◽  
Author(s):  
Andrzej Zybert ◽  
Krystian Tarczyński ◽  
Halina Sieczkowska ◽  
Krzysztof Młynek
Keyword(s):  
Comparative Analysis ◽  
Meat Quality ◽  
Environmental Conditions ◽  
Lactate Concentration ◽  
Drip Loss ◽  
Post Mortem ◽  
Technological Quality ◽  
Imf Content

ABSTRACT: The objective of this study was the comparative analysis of selected attributes of nutritional and technological quality of pork from Naïma and DanBred gilts mated with P-76 boars. The research was carried on 50 pigs (25 in each group) reared under the same environmental conditions and slaughtered at about 115±5.0 kg. Both analyzed crossbreds populations were characterized by overall good nutritional and technological quality. However the loins from DanBred×P-76 compared with those from Naïma×P-76 had significantly greater glycogen and less lactate concentration in early post mortem period, higher pH at all measurement points (besides no statistical differences in pH measured 2 hours post mortem), lower thermal drip and drip loss measured 96 and 144 hours post mortem and lower lightness (except no differences measured 48 hours post mortem). Additionally loins from DanBred×P-76 contained more protein and less water. No statistical differences in IMF content between both analysed groups were noted (their average values were below 2%). Aforementioned may suggest that crossing both Naïma and DanBred hybrids with P-76 boars may not improve IMF content or increase marbling scores to the levels preferred for culinary purposes.

Influence of provision of toys during transport and lairage on stress responses and meat quality of pigs

2006 ◽  
Vol 82 (5) ◽  
pp. 591-595 ◽  
Author(s):  
E. Peeters ◽  
R. Geers
Keyword(s):  
Meat Quality ◽  
Stress Responses ◽  
Environmental Enrichment ◽  
Lactate Concentration ◽  
Lactate Production ◽  
Blood Sampling ◽  
Control Group ◽  
Post Mortem ◽  
Plastic Ball

AbstractTransport and accompanying mixing of pigs causes fights among pigs and stress resulting in decreased welfare and reduced meat quality. This study investigates the effect of toys available during transport and lairage on behaviour, stress responses, and meat quality of slaughter pigs. Cross-bred (Piétrain×Hypor) pigs (109·1±10·1 kg) were allocated to one of three treatments during transport and lairage: 1) no toys (control) 2) rubber toys and 3) balls. The rubber toy consisted of two fixed rubber sticks; the plastic ball was filled with pieces of maize, which became available for the pigs in small amounts by manipulating the ball. Per group of 11 pigs, two toys were provided. Totally, divided over 4 replicates, 144 pigs were involved, of which 72 were used for blood sampling and meat quality measurements. Five minutes scans during lairage revealed that treatment did not affect the percentage of pigs that lay (P=0·20), stood (P=0·83) or sat (P=0·12) and that in almost all scans at least one pigs was manipulating a ball, compared with half of the scans in which at least one animal was manipulating a rubber toy (P=0·02). However both toys resulted in a lower incidence of shoulder lesions compared with the control group (P=0·06; 31·1% and 28·9% of the pigs for the rubber toys and balls respectively, versus 51·1% for the control group). Blood sampling at sticking showed that pigs with the balls during transport and lairage tended to have lower cortisol concentrations (P=0·07) than pigs with the rubber toys. Also, a decrease in plasma lactate concentration was observed for these pigs in comparison with the control group (P=0·08), and a higher pH of the m. longissimus dorsi 45 min post mortem for the pigs with the balls was found than for the pigs with the rubber toys (P=0·01). These results indicate that enrichment of compartments during transport and lairage with balls reduced glycolysis in muscle resulting in a lower lactate production and a slower pH decline. The pH 45 min post mortem of the m. biceps femoris and the pH, electrical conductivity, colour, and water-holding capacity of the loin 48 h post mortem were not affected by treatment. In conclusion, environmental enrichment with toys during transport and lairage can decrease shoulder lesions and lower the pH decline 45 min post mortem, especially by provision of plastic balls filled with maize.

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