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https://www.readbyqxmd.com/read/28342838/the-effect-of-the-packaging-system-and-storage-time-on-myofibrillar-protein-degradation-and-oxidation-process-in-relation-to-beef-tenderness
#1
Małgorzata Moczkowska, Andrzej Półtorak, Magdalena Montowska, Edward Pospiech, Agnieszka Wierzbicka
This study investigated the impact of packaging systems on the degradation and oxidation of beef proteins regarding beef tenderness of longissimus lumborum (LL) and biceps femoris (BF) muscles stored in vacuum skin packaging (VSP), a modified atmosphere with high oxygen concentration (MAP), and combined of these two methods (VSP+MAP). A significant decrease in the Warner-Bratzler shear force (WBSF) in VSP at D14 and D28 for LL was observed compared to BF. A significant effect of packaging system on troponin-T (Tn-T) and desmin degradation was shown (p≤0...
March 18, 2017: Meat Science
https://www.readbyqxmd.com/read/28339214/muscle-protein-signaling-in-c2c12-cells-is-stimulated-to-a-similar-degree-by-diverse-commercial-food-protein-sources-and-experimental-soy-protein-hydrolysates
#2
David A Roeseler, Nancy J McGraw, Dustie N Butteiger, Naina Shah, Janine Hall-Porter, Ratna Mukherjea, Elaine Susan Krul
Dietary protein stimulates muscle protein synthesis and is essential for muscle health. We developed a screening assay using C2C12 mouse muscle cells to assess the relative abilities of diverse commercial proteins sources and experimental soy protein hydrolysates (ESH), after simulated gut digestion (SGD), to activate the mechanistic target of rapamycin complex I (mTORC1) muscle protein synthesis signaling pathway (p70S6K(Thr389) phosphorylation). Activation of mTORC1 was expressed as a percentage of a maximal insulin response...
March 24, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28335483/land-use-for-edible-protein-of-animal-origin-a-review
#3
REVIEW
Gerhard Flachowsky, Ulrich Meyer, Karl-Heinz Südekum
The present period is characterized by a growing world population and a higher demand for more and better quality food, as well as other products for an improved standard of living. In the future, there will be increasingly strong competition for arable land and non-renewable resources such as fossil carbon-sources, water, and some minerals, as well as between food, feed, fuel, fiber, flowers, and fun (6 F's). Proteins of animal origin like milk, meat, fish, eggs and, probably, insects are very valuable sources of essential amino acids, minerals and vitamins, but their production consumes some non-renewable resources including arable land and causes considerable emissions...
March 18, 2017: Animals: An Open Access Journal From MDPI
https://www.readbyqxmd.com/read/28335096/estimation-of-methane-emissions-from-local-and-crossbreed-beef-cattle-in-dak-lak-province-of-vietnam
#4
Carlos Alberto Ramírez-Restrepo, Dung Van Tien, Ngoan Le Duc, Mario Herrero, Phung Le Dinh, Dung Dinh Van, Sen Le Thi Hoa, Cuong Vu Chi, Cesar Solano-Patiño, Amy M Lerner, Timothy D Searchinger
Objective: This study was aimed at evaluating effects of cattle breed resources and alternative mixed-feeding practices on meat productivity and emission intensities from household farming systems in Daklak Province, Vietnam. Methods: Records from Local Yellow x Red Sindhi (Bos indicus; Lai Sind) and ½ Limousin, ½ Drought Master and ½ Red Angus cattle during the growth (0 to 21 months) and fattening (22 to 25 months) periods were used to better understand variations on meat productivity and enteric methane emissions...
March 21, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28335095/genetic-correlation-between-live-body-measurements-and-beef-cutability-traits-in-hanwoo-steers
#5
Yun Ho Choy, Jae Goo Lee, Alam Mahboob, Tae Jeong Choi, Seung Hee Rho
The growth, carcass and retail cut yield records on 1,428 Hanwoo steers obtained through progeny testing were analyzed in this study, and their heritability and genetic relationships among the traits were estimated using animal models. Two different models were compared in this study. Each model was fitted for different fixed class effects, date of slaughter for carcass traits and batch of progeny test live measurement traits, and a choice of covariates (carcass weight in Model 1 or backfat thickness in Model 2) for carcass traits...
March 21, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28335092/effect-of-energy-density-and-virginiamycin-supplementation-in-diets-on-growth-performance-and-digestive-function-of-finishing-steers
#6
Juan Diego Navarrete, Martin F Montano, Constantino Raymundo, Jaime Salinas-Chavira, Noemi Torrentera, Richard Avery Zinn
Objective: In the study was determined the influence of virginiamycin supplementation on growth-performance and characteristics of digestion of cattle, decreasing dietary NEm from 2.22 to 2.10 Mcal/kg. Methods: Eighty crossbred beef steers (298.2 ± 6.3 kg) were used in a 152-d performance evaluation consisting of a 28-d adaptation period followed by a 124-d growing-finishing period. During the 124-d period steers were fed either a lesser energy dense (LED, 2.10 Mcal/kg NEm) or higher energy dense (HED, 2...
March 21, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28332649/epidemiological-surveillance-in-dairy-farms-in-the-pastaza-province-of-ecuador
#7
M Perez Ruano, F V Lam Romero, D Benítez Jiménez, S Ríos Núñez, J C Vargas Burgos, R Quinteros Pozo, X Rodríguez Villafuerte
A survey was carried out on dairy cattle farms in Pastaza province to analyse the degree of compliance with epidemiological surveillance activities (based on the main technical aspects in Ecuador's Guide to Good Dairy Farming Practices) and to assess the reduction of the risk of introducing disease into dairy cattle. Visits were made to 70 dairy and dual-purpose beef/dairy farms, where the survey was conducted to evaluate technical aspects relating to epidemiological surveillance and the risk of introducing disease...
December 2016: Revue Scientifique et Technique
https://www.readbyqxmd.com/read/28330466/the-nasopharyngeal-microbiota-of-beef-cattle-before-and-after-transport-to-a-feedlot
#8
Devin B Holman, Edouard Timsit, Samat Amat, D Wade Abbott, Andre G Buret, Trevor W Alexander
BACKGROUND: The nasopharyngeal (NP) microbiota plays an important role in bovine health, comprising a rich and diverse microbial community. The nasopharynx is also the niche for potentially pathogenic agents which are associated with bovine respiratory disease (BRD), a serious and costly illness in feedlot cattle. We used 14 beef heifers from a closed and disease-free herd to assess the dynamics of the NP microbiota of cattle that are transported to a feedlot. Cattle were sampled prior to transport to the feedlot (day 0) and at days 2, 7, and 14...
March 22, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28329638/developing-a-continuous-quality-improvement-assessment-using-a-patient-centered-approach-in-optimizing-sle-disease-control
#9
Katelyn Updyke, Brittany Urso, James A Solomon
Systemic lupus erythematous is a multi-organ autoimmune disease in which the patient has "lost" self- tolerance and developed immune-complexes containing self-antigen that cause disease through tissue inflammation and multi-organ damage. Patients often have unpredictable flares in symptoms with poorly identified triggers. However, it has been suggested in other literature that exogenous exposures, including ingested beef, cigarette smoke, UV radiation, metal-complexing agents, and infections can contribute to exacerbations and improvements in SLE symptoms...
September 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28327500/a-review-of-sustainability-enhancements-in-the-beef-value-chain-state-of-the-art-and-recommendations-for-future-improvements
#10
Danielle Maia de Souza, Ruaraidh Petre, Fawn Jackson, Monica Hadarits, Sarah Pogue, Cameron N Carlyle, Edward Bork, Tim McAllister
The beef sector is working towards continually improving its sustainability in order to achieve environmentally, socially and economically desirable outcomes, all of which are of increasing concern to consumers. In this context, the Global Roundtable for Sustainable Beef (GRSB) provides guidance to advance the sustainability of the beef industry, through increased stakeholder engagement and the formation of national roundtables. Recently, the 2nd Global Conference on Sustainable Beef took place in Banff, Alberta, Canada, hosted by the GRSB and the Canadian Roundtable for Sustainable Beef...
March 22, 2017: Animals: An Open Access Journal From MDPI
https://www.readbyqxmd.com/read/28326519/influence-of-diet-on-the-risk-of-developing-endometriosis
#11
Joanna Jurkiewicz-Przondziono, Magdalena Lemm, Anna Kwiatkowska-Pamuła, Ewa Ziółko, Mariusz K Wójtowicz
Endometriosis is a hormone-dependent chronic inflammatory disease characterized by the presence of endometrium beyond the uterine cavity. The disease affects 5-15% of women of child-bearing age, 30-50% of whom suffer from infertility. Understanding the role of dietary factors in the development of endometriosis is critical to development of effective dietary instructions for prevention. Existing studies concerning nutrition and endometriosis suggest that diet is a potentially modifiable risk factor for endometriosis...
2017: Ginekologia Polska
https://www.readbyqxmd.com/read/28324871/herd-specific-random-regression-carcass-profiles-for-beef-cattle-after-adjustment-for-animal-genetic-merit
#12
Tanya M Englishby, Kirsty L Moore, Donagh P Berry, Mike P Coffey, Georgios Banos
Abattoir data are an important source of information for the genetic evaluation of carcass traits, but also for on-farm management purposes. The present study aimed to quantify the contribution of herd environment to beef carcass characteristics (weight, conformation score and fat score) with particular emphasis on generating finishing herd-specific profiles for these traits across different ages at slaughter. Abattoir records from 46,115 heifers and 78,790 steers aged between 360 and 900days, and from 22,971 young bulls aged between 360 and 720days, were analysed...
March 7, 2017: Meat Science
https://www.readbyqxmd.com/read/28324870/effects-of-long-spray-chilling-on-water-pocket-development-in-ribeyes
#13
A S de Mello, T P Ringkob, Y Yeh
Water Pocket (WP) is a defect on beef that may lead to significant economic losses. Our hypothesis is that longer spray-chilling time increases WP incidence on ribeyes (M. longissimus thoracis). Ribeyes (28,801) were visually evaluated for the presence of WP after 24 or 72h of spray chilling. Additionally, 252 beef sides were evaluated prior to chilling to predict WP development after 24h of spray chilling. Also, the 12th rib fat thickness was measured on 313 sides and the sides were assigned to two categories of WP or no WP to evaluate fat thickness as an indicator for WP...
March 11, 2017: Meat Science
https://www.readbyqxmd.com/read/28324868/lactic-acid-concentrations-that-reduce-microbial-load-yet-minimally-impact-colour-and-sensory-characteristics-of-beef
#14
Cristina Rodríguez-Melcón, Carlos Alonso-Calleja, Rosa Capita
Lactic acid (LA) has recently been approved in the EU as beef decontaminant. In order to identify the most appropriate concentration, beef samples were spray-treated with LA (2%, 3%, 4% or 5%) or left untreated (control). Microbial load (aerobic plate counts, psychrotrophs and Enterobacteriaceae), pH, instrumental colour and sensory properties were investigated at 0, 24, 72 and 120h of refrigerated storage. The reductions in bacteria after spraying ranged from 0.57 to 0.95 log units. A residual antimicrobial effect was observed so that at 120h LA reduced microbial load by up to 2 log units compared with the control samples...
January 17, 2017: Meat Science
https://www.readbyqxmd.com/read/28322048/residues-of-salbutamol-and-identification-of-its-metabolites-in-beef-cattle
#15
Kai Zhang, Chaohua Tang, Qingshi Meng, Wei Du, Tao Bo, Qingyu Zhao, Xiaowei Liang, Shengsheng Liu, Zhixu Zhang, Junmin Zhang
Salbutamol, a selective β2-agonist, endangers the safety of animal products because of illegal use in food animals. Residues of salbutamol and its metabolites were investigated to select appropriate targets and marker residues for monitoring the illegal use of salbutamol. Ten metabolites of salbutamol were identified from plasma, urine, liver, and kidney samples; of these, six were newly identified. There were significant differences (P < 0.01) between the concentrations of parent (non-conjugated) and total (conjugated + non-conjugated) salbutamol in plasma, urine, liver, and kidney tissues...
March 21, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28318588/comparative-composition-diversity-and-abundance-of-oligosaccharides-in-early-lactation-milk-from-commercial-dairy-and-beef-cows
#16
William M Sischo, Diana M Short, Mareen Geissler, Apichaya Bunyatratchata, Daniela Barile
Prebiotics are nondigestible dietary ingredients, usually oligosaccharides (OS), that provide a health benefit to the host by directly modulating the gut microbiota. Although there is some information describing OS content in dairy-source milk, no information is available to describe the OS content of beef-source milk. Given the different trait emphasis between dairy and beef for milk production and calf survivability, it is plausible that OS composition, diversity, and abundance differ between production types...
March 16, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28317285/changes-in-the-relative-population-size-of-selected-ruminal-bacteria-following-an-induced-episode-of-acidosis-in-beef-heifers-receiving-viable-and-non-viable-active-dried-yeast
#17
R Mohammed, D Vyas, W Z Yang, K A Beauchemin
AIMS: To characterize the changes in the relative population size (RPS) of select ruminal bacteria and rumen fermentation variables in beef heifers supplemented with a strain of Saccharomyces cerevisiae as viable active dried (ADY) or killed dried (KDY) yeast following an induced episode of ruminal acidosis. METHODS AND RESULTS: Six ruminally-cannulated beef heifers fed a diet consisting of 50% forage and 50% grain (dry matter basis) were used in a replicated 3 × 3 Latin square design with three 28 d periods...
March 20, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28316467/changes-in-the-total-lipid-neutral-lipid-phospholipid-and-fatty-acid-composition-of-phospholipid-fractions-during-past%C3%A4-rma-processing-a-dry-cured-meat-product
#18
Muhammet Irfan Aksu, Mehmet Dogan, Ahmet Necdet Sirkecioglu
Pastırma is a dry-cured meat product, produced from whole beef or water buffalo muscles. This study was carried out to investigate the effect of production stages (raw meat, after curing, after 2(nd) drying and pastırma) on the total lipid, neutral lipid, phospholipid and fatty acid composition of phospholipid fraction of pastırma produced from beef M. Longissimus dorsi muscles. The pH and colour (L*, a* and b*) analyses were also performed in raw meat and pastırma. It was found that pastırma production stages had significant effects (p<0...
2017: Korean Journal for Food Science of Animal Resources
https://www.readbyqxmd.com/read/28304086/influence-of-modified-atmosphere-packaging-on-protein-oxidation-calpain-activation-and-desmin-degradation-of-beef-muscles
#19
Qing-Quan Fu, Qing-Feng Ge, Rui Liu, Hai-Ou Wang, Guang-Hong Zhou, Wan-Gang Zhang
BACKGROUND: Protein oxidation is widespread in biochemical systems. The objective of the study was to investigate the differences in protein oxidation, μ-calpain activity, desmin proteolysis and protein solubility of beef psoas major (PM) and semimembranosus (SM) muscles under three packaging systems during postmortem aging. At 24 h postmortem, beef muscles were packaged respectively in air-permeable film overwrap (AP), vacuum pack (VP) or modified atmosphere (MAP, 80% O2 + 20% CO2 ), and then displayed for 10 days (d) at 4 °C...
March 17, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28303705/the-sense-of-life-satisfaction-versus-dietary-choices-of-young-women-doing-fitness-for-recreational-purposes
#20
Maria Gacek
Background: : The health potential of a person can be improved thanks to recreational physical activity and rational diet. The sense of life satisfaction is also one of significant health resources. Objective: The aim of the study was to analyze the relations between the level of life satisfaction and the frequency of consuming selected products in the group of young women who engage in fitness for recreational purposes. Material and Methods: The study involved 200 young women (20-30 years old) who regularly do recreational physical activity in fitness clubs in Małopolska...
2017: Roczniki Państwowego Zakładu Higieny
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