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1.
Genes (Basel) ; 14(8)2023 07 28.
Artigo em Inglês | MEDLINE | ID: mdl-37628600

RESUMO

The Huai pig is a well-known indigenous pig breed in China. The main advantages of Huai pigs over Western commercial pig breeds include a high intramuscular fat (IMF) content and good meat quality. There are significant differences in the meat quality traits of the same muscle part or different muscle parts of the same variety. To investigate the potential genetic mechanism underlying the meat quality differences in different pig breeds or muscle groups, longissimus dorsi (LD), psoas major (PM), and biceps femoris (BF) muscle tissues were collected from two pig breeds (Huai and Duroc). There were significant differences in meat quality traits and amino acid content. We assessed the muscle transcriptomic profiles using high-throughput RNA sequencing. The IMF content in the LD, PM, and BF muscles of Huai pigs was significantly higher than that in Duroc pigs (p < 0.05). Similarly, the content of flavor amino acids in the three muscle groups was significantly higher in Huai pigs than that in Duroc pigs (p < 0.05). We identified 175, 110, and 86 differentially expressed genes (DEGs) between the LD, PM, and BF muscles of the Huai and Duroc pigs, respectively. The DEGs of the different pig breeds and muscle regions were significantly enriched in the biological processes and signaling pathways related to muscle fiber type, IMF deposition, lipid metabolism, PPAR signaling, cAMP signaling, amino acid metabolism, and ECM-receptor interaction. Our findings might help improve pork yield by using the obtained DEGs for marker-assisted selection and providing a theoretical reference for evaluating and improving pork quality.


Assuntos
Qualidade dos Alimentos , Carne , Fibras Musculares Esqueléticas , Suínos , Transcriptoma , Animais , Aminoácidos/análise , Aminoácidos/biossíntese , Aminoácidos/genética , China , Carne/normas , Fibras Musculares Esqueléticas/química , Fibras Musculares Esqueléticas/metabolismo , Músculos Paraespinais/química , Músculos Paraespinais/metabolismo , Suínos/genética , Transcriptoma/genética
2.
Mol Biol Rep ; 50(3): 2033-2039, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-36538173

RESUMO

BACKGROUND: Based on our previous research conducted on cinnamaldehyde (CA) exhibiting its ability to improve the growth performance of fattening pigs and the adipogenesis induction model of C2C12 cells constructed in our laboratory, we explored the effects of CA on the generation and development of lipid droplets (LDs) in adipogenic differentiated C2C12 cells. METHODS AND RESULTS: C2C12 cells were treated with either 0.4 mM or 0.8 mM CA. BODIPY staining and triglyceride measurements were conducted to observe the morphology of LDs, and Western blotting was used to measure the expression of their metabolism-related proteins. The results showed that the average number of LDs in the CA treatment groups was more than the control group (P < 0.05), whereas the average LD size and triglyceride content decreased (P < 0.05). Compared with the control group, the expression levels of fusion-related genes in the LDs of the CA treatment group significantly decreased, while decomposition-related genes and autophagy-related genes in the LDs in C2C12 cells significantly increased (P < 0.01). CONCLUSION: Cinnamaldehyde promoted the decomposition and autophagy of lipid droplets in C2C12 cells and inhibited the fusion of lipid droplets.


Assuntos
Acroleína , Adipócitos , Diferenciação Celular , Gotículas Lipídicas , Metabolismo dos Lipídeos , Gotículas Lipídicas/efeitos dos fármacos , Gotículas Lipídicas/metabolismo , Adipócitos/citologia , Adipócitos/efeitos dos fármacos , Adipócitos/metabolismo , Autofagia/efeitos dos fármacos , Autofagia/genética , Fusão de Membrana/efeitos dos fármacos , Metabolismo dos Lipídeos/efeitos dos fármacos , Carne/normas , Qualidade dos Alimentos , Animais , Camundongos , Linhagem Celular , Acroleína/análogos & derivados , Triglicerídeos
3.
Trop Anim Health Prod ; 55(1): 20, 2022 Dec 21.
Artigo em Inglês | MEDLINE | ID: mdl-36542167

RESUMO

The aim of the present study was to evaluate the efficiency of selection for body growth and its association with carcass and meat quality traits in the red-winged tinamou. Two experimental groups were selected based on the selection index: selection group with a higher index (TinamouS) and commercial group with a lower index (TinamouC). Weight at 180 days and slaughter weight were significantly higher (p < 0.05) in the TinamouS group, as were hot carcass weight, skinless breast weight, wing weight, and thigh and drumstick weight. The meat quality traits or sensory attributes did not differ significantly (p > 0.05) between groups. A significant positive correlation (0.59; p < 0.05) was found between shear force and chewability and a significant negative correlation (- 0.59; p < 0.05) between aroma intensity and strange aroma. The present study suggests that the selection index promotes greater body growth and preserves meat quality and sensory traits in red-winged tinamou.


Assuntos
Carne , Paleógnatas , Animais , Composição Corporal , Carne/análise , Carne/normas , Músculos/fisiologia , Paleógnatas/crescimento & desenvolvimento , Fenótipo
4.
Vet Rec ; 191(2): e1733, 2022 07.
Artigo em Inglês | MEDLINE | ID: mdl-35700231

RESUMO

BACKGROUND: The condemnation of carcases and offal unfit for human consumption is a regulatory requirement at the slaughterhouse. Condemnation data, if comprehensive and standardised, can be a valuable source of information for risk-based inspection and decision making. METHODS: The aim of this study was to analyse postmortem condemnation data that were recorded in all bovine slaughterhouses in mainland France from 1 January 2016 to 31 December 2020 in a comprehensive and standardised information system. The rates of and reasons for condemnation, as well as factors influencing rate variation, were investigated through descriptive analysis and multivariable logistic regression models. RESULTS: The global, total and partial condemnation rates were 4.5%, 0.7% and 3.8% for adult cattle and 1.4%, 0.3% and 1.1% for calves, respectively. Reasons for condemnation varied with the animal category; for example, the three main reasons for total condemnation in adult cattle were serous infiltration of connective tissue (49% of condemned animals), congestive peritonitis (12.2%) and fibrinous peritonitis (10.9%), whereas the top three reasons for partial condemnation were unique abscess (21.9%), haemorrhagic infiltration (20.6%) and muscular sclerosis (17.4%). Condemnation rates were influenced by animal-related factors (sex, age, type of breed) and slaughterhouse-related factors (status, type, slaughter volume). CONCLUSION: Our findings could usefully contribute to the continuous improvement of the harmonisation of inspection decisions and support the risk manager's strategy in the modernisation of official controls at the slaughterhouse.


Assuntos
Matadouros/estatística & dados numéricos , Doenças dos Bovinos/epidemiologia , Carne , Peritonite/veterinária , Matadouros/legislação & jurisprudência , Animais , Bovinos , França/epidemiologia , Humanos , Sistemas de Informação , Modelos Logísticos , Carne/normas , Análise Multivariada , Peritonite/classificação , Peritonite/epidemiologia
5.
Poult Sci ; 101(8): 101963, 2022 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-35709683

RESUMO

This experiment compared the effects of 2 chronic heat stress (HS) models, constant (coHS), and cyclic (cyHS), on broiler performance, carcass characteristics, and meat quality. A total of 720 male chicks from a Cobb 500 line were placed in 12 environmentally controlled chambers divided into 2 pens of 30 birds. Before the experimental HS models were applied, chamber temperatures were gradually decreased from 32°C at placement to 24°C on d 20. From 20 to 41 d, 4 chambers were set to 35°C (coHS), and 4 chambers were set to 35°C for 12 h and 24°C for the next 12 h (cyHS). Four thermoneutral chambers were maintained at 24°C with half of the birds pair-fed to equalize feed intake (FI) with coHS birds (TN-coPF) and half fed ad-libitum (TN-al). From 20 to 41 d, FI and BW gain (BWG) of cyHS, coHS and TN-coPF birds were decreased (P < 0.001), whereas feed conversion ratio (FCR) was increased (P < 0.001) for coHS and TN-coPF birds compared with TN-al birds. The overall BWG and FCR of coHS birds were lower (P < 0.001) than TN-coPF birds. Both HS models reduced (P < 0.001) carcass weight, pectoralis major yield, total breast meat yield, and increased (P < 0.001) wing yield relative to TN-al birds, with each of these measurements more impacted by coHS than by cyHS. Pair-fed birds had lower (P < 0.001) fat pad and a higher total breast meat yield than coHS birds. They also had the lowest (P < 0.001) pectoralis major ultimate pH and yellowness, and these parameters were lower (P < 0.001) for coHS birds than for TN-al birds. Both HS models reduced (P < 0.001) the incidence of woody breast and white striping. Thus, these data indicate that the detrimental effects of HS cannot be entirely explained by reduced FI and that HS per se affects metabolic pathways associated with muscle and lipid accretion in broilers.


Assuntos
Galinhas , Resposta ao Choque Térmico , Carne , Ração Animal , Animais , Galinhas/fisiologia , Dieta/veterinária , Temperatura Alta , Masculino , Carne/normas
6.
Animal ; 16 Suppl 1: 100426, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-35031228

RESUMO

This paper reviews the current state of knowledge on beef carcass and meat quality, with particular emphasis on on-farm and processing factors associated with its high and inconsistent variability. The diversity of livestock systems comes from the diversity of breeds (dairy or beef), ages and gender (bulls, steers, heifers, cull cows) used to produce either mainly beef or beef and milk. In addition, there are factors linked to farming practices (including diet, especially grazing) which significantly influence the sensory, nutritional, technological and extrinsic (such as image) quality attributes of meat. These can become factors of positive differentiation when controlled by the application and certification of technical specifications. Finally, preslaughter (such as stress), slaughter (such as the chilling and hanging method of carcasses) and postslaughter (such as ageing, packaging and cooking) conditions have a strong influence on the microbiological, sensory, technological and image quality attributes of beef. In this review, potential synergisms or antagonisms between the different quality attributes are highlighted. For example, finishing cattle on grass, compared to indoor fattening on a high concentrate diet, has the advantage of producing leaner meat with a higher proportion of omega-3 fatty acids while exhibiting superior oxidative stability, but with the consequence of a darker meat colour and lower productivity, as well as higher seasonality and land surface requirements. Moreover, the control of on-farm factors is often guided by productivity (growth rate, feed conversion ratio) and carcass quality attributes (weight, conformation and fatness). Genetic selection has often been oriented in this direction, without taking other quality attributes into account. Finally, the interactions between all these factors (and especially between on-farm and slaughter or processing factors) are not considered in the quality grading schemes in European countries. This means that positive efforts at farm level may be mitigated or even eliminated by poor slaughtering or processing conditions. All these considerations explain why between-animal variability in quality can be high, even when animals come from the same farming system. The ability to predict the sensory and nutritional properties of meat according to production factors has become a major objective of the supply chain.


Assuntos
Bovinos , Indústria de Laticínios/métodos , Manipulação de Alimentos , Carne , Ração Animal/análise , Animais , Dieta/veterinária , Fazendas , Carne/normas , Leite
7.
Anim Biotechnol ; 33(6): 1322-1332, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-33752552

RESUMO

Totally, 315 42-day-old male Xueshan chickens were allocated into 3 caging densities, 14, 21 and 28 birds/m2. Each treatment was represented by 5 replicates. The body weight (BW), slaughter performance, meat quality, behavioral assessment, and the cecal microorganisms were detected at the market age. The results showed that the BW of broilers in the low- and medium-density groups was significantly higher (p < 0.05) than that of the high-density group from the age of 10 weeks. Only the feather quality of the broilers in the low-density group improved significantly (p < 0.05) compared with those of the other two groups. And, the abdominal fat percentage and the fat content of thigh muscle of broilers in the low- and medium-density groups were higher (p < 0.05) than those in the high-density group. No significant difference (p > 0.05) was noted in the other traits. The abundance of some microbial like Akkermansiaceae, Lactobacillaceae and Faecalibacterium may be correlated with the BW and fat content of broilers. The findings of this study suggest that increasing the stocking density decreased the final BW, fat content and the feather quality, whereas no evidence was found that stocking density caused changes in other parameters.


Assuntos
Criação de Animais Domésticos , Peso Corporal , Galinhas , Microbioma Gastrointestinal , Carne , Animais , Masculino , Criação de Animais Domésticos/métodos , Ceco/microbiologia , Carne/análise , Carne/normas , Densidade Demográfica
8.
J Food Prot ; 85(3): 435-447, 2022 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-34818412

RESUMO

ABSTRACT: This study aimed to review the scientific literature on the quality and safety of beef sold in retail, methodologies used for quality evaluation, and proposed interventions for the sector. Bibliographical research was performed to identify scientific articles using the electronic databases Ovid, PubMed, Scielo, LILACS, Scopus, and Embase. Thirty-three articles were included in the review. Given the different dimensions of the studies, the results were organized into three categories, according to the following approaches: food, environment, and handlers; consumers and selection criteria; and intervention strategies for the retail sector. The applied methodological strategies revealed inadequate conditions and neglect in several processing and operation stages that are fundamental to the maintenance of quality standards. The results confirm a worrying scenario and the presence of risks to consumers. Based on the studies evaluated, it is necessary to emphasize consumer concern about the importance of the integrated information chain-all stages involved in the production process and meat distribution for retail meat stores. The reported conditions from different studies indicate the need for interventions with a view to prevention of health risks, continued training of food handlers, and transformation of evidenced realities. In this context, it is possible to point out the predominance of diagnostic studies, in contrast with interventional studies focused on the training and qualification of food handlers.


Assuntos
Indústria Alimentícia , Inocuidade dos Alimentos , Carne Vermelha , Animais , Bovinos , Comércio , Contaminação de Alimentos/análise , Indústria Alimentícia/normas , Marketing , Carne/normas , Carne Vermelha/normas
9.
PLoS One ; 16(12): e0261010, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34879112

RESUMO

Antimicrobial use in animal agriculture is often perceived to play a role in the emerging threat of antimicrobial resistance. Increased consumer awareness of this issue places pressure on animal husbandry to adopt policies to reduce or eliminate antimicrobial use. We use a scoping review methodology to assess research on consumer perceptions of antimicrobial drugs in meat products in the United States, Canada, or the European Union. Evaluating peer-reviewed and grey literature, we included studies for assessment if they met these topical and geographic requirements, involved primary data collection, and were originally published in English. Our screening process identified 124 relevant studies. Three reviewers jointly developed a data charting form and independently charted the contents of the studies. Of the 105 studies that measured consumer concern, 77.1% found that consumers were concerned about antimicrobial use in meat production. A minority of studies (29.8% of all studies) queried why consumers hold these views. These studies found human health and animal welfare were the main reasons for concern. Antimicrobial resistance rarely registered as an explicit reason for concern. A smaller group of studies (23.3%) measured the personal characteristics of consumers that expressed concern about antimicrobials. Among these studies, the most common and consistent features of these consumers were gender, age, income, and education. Regarding the methodology used, studies tended to be dominated by either willingness-to-pay studies or Likert scale questionnaires (73.64% of all studies). We recommend consideration of qualitative research into consumer views on this topic, which may provide new perspectives that explain consumer decision-making and mentality that are lacking in the literature. In addition, more research into the difference between what consumers claim is of concern and their ultimate purchasing decisions would be especially valuable.


Assuntos
Criação de Animais Domésticos/normas , Antibacterianos/administração & dosagem , Comportamento do Consumidor/estatística & dados numéricos , Carne/normas , Opinião Pública , Animais , Percepção
10.
Molecules ; 26(21)2021 Oct 28.
Artigo em Inglês | MEDLINE | ID: mdl-34770913

RESUMO

Chicken is known to be the most common meat type involved in food mislabeling and adulteration. Establishing a method to authenticate chicken content precisely and identifying chicken breeds as declared in processed food is crucial for protecting consumers' rights. Categorizing the authentication method into their respective omics disciplines, such as genomics, transcriptomics, proteomics, lipidomics, metabolomics, and glycomics, and the implementation of bioinformatics or chemometrics in data analysis can assist the researcher in improving the currently available techniques. Designing a vast range of instruments and analytical methods at the molecular level is vital for overcoming the technical drawback in discriminating chicken from other species and even within its breed. This review aims to provide insight and highlight previous and current approaches suitable for countering different circumstances in chicken authentication.


Assuntos
Genômica , Carne/análise , Carne/normas , Metabolômica , Proteômica , Animais , Galinhas , Análise de Alimentos/métodos , Contaminação de Alimentos , Perfilação da Expressão Gênica , Genômica/métodos , Metaboloma , Metabolômica/métodos , Proteômica/métodos , Transcriptoma , Fluxo de Trabalho
11.
Food Funct ; 12(23): 11790-11807, 2021 Nov 29.
Artigo em Inglês | MEDLINE | ID: mdl-34761788

RESUMO

Exosomes are extracellular membranous nanovesicles that carry functional molecules to mediate cell-to-cell communication. To date, whether probiotics improve the immune function of broilers by plasmal exosome cargo is unclear. In this study, 300 broilers were allocated to three treatments: control diet (CON group), control diet + dexamethasone injection (DEX group), and control diet containing 1 × 108 cfu g-1 P8 + DEX injection (P8 + DEX group). The growth performance, meat quality and immune function of plasma and jejunal mucosa were detected. Exosomes were isolated from the plasma and characterized. Then, the exosome protein profile was determined by proteomic analysis. Correlation analyses between the exosomal proteins and growth performance, meat quality, immune function were performed. Lastly, the related protein levels were verified by multiple reaction monitoring (MRM). Results showed that P8 treatment increased the growth performance, meat quality and immune function of DEX-induced broilers with immunological stress. Moreover, the average diameters, cup-shaped morphology and expressed exosomal proteins confirmed that the isolated extracellular vesicles were exosomes. A total of 784 proteins were identified in the exosomes; among which, 126 differentially expressed proteins (DEPs) were found between the DEX and CON groups and 102 DEPs were found between the P8 + DEX and DEX groups. Gene ontology analysis indicated that DEPs between the DEX and CON groups are mainly involved in the metabolic process, cellular anatomical entity, cytoplasm, etc. DEPs between the P8 + DEX and DEX groups are mainly involved in the multicellular organismal process, response to stimulus, cytoplasm, etc. Pathway analysis revealed that most of the DEPs between the DEX and CON groups participated in the ECM-receptor interaction, focal adhesion, regulation of actin cytoskeleton, etc. Most of the DEPs between the P8 + DEX and DEX groups participated in the ErbB and PPAR signaling pathways. Moreover, many DEPs were correlated with the altered parameters of growth performance, meat quality and immunity in P8-treated broilers. MRM further revealed that the upregulated FABP6 and EPCAM in the DEX group were decreased by P8 + DEX treatment, and the downregulated C1QTNF3 in the DEX group was increased by P8 + DEX treatment. In conclusion, our findings demonstrated that P8 may promote the immune function, growth performance and meat quality of broilers with immunological stress by regulating the plasma exosomal proteins, especially the proteins of FABP6, EPCAM and C1QTNF3 and the pathway of PPAR (ILK/FABP6).


Assuntos
Galinhas , Exossomos , Lactobacillus plantarum , Carne , Probióticos , Ração Animal , Animais , Suplementos Nutricionais , Exossomos/química , Exossomos/efeitos dos fármacos , Exossomos/imunologia , Masculino , Carne/análise , Carne/normas , Probióticos/administração & dosagem , Probióticos/farmacologia , Proteômica , Estresse Fisiológico/imunologia
12.
BMC Vet Res ; 17(1): 278, 2021 Aug 18.
Artigo em Inglês | MEDLINE | ID: mdl-34407823

RESUMO

BACKGROUND: Abattoir data are under-used for surveillance. Nationwide surveillance could benefit from using data on meat inspection findings, but several limitations need to be overcome. At the producer level, interpretation of meat inspection findings is a notable opportunity for surveillance with relevance to animal health and welfare. In this study, we propose that discovery and monitoring of relational patterns between condemnation conditions co-present in broiler batches at meat inspection can provide valuable information for surveillance of farmed animal health and welfare. RESULTS: Great Britain (GB)-based integrator meat inspection records for 14,045 broiler batches slaughtered in nine, four monthly intervals were assessed for the presence of surveillance indicators relevant to broiler health and welfare. K-means and correlation-based hierarchical clustering, and association rules analyses were performed to identify relational patterns in the data. Incidence of condemnation showed seasonal and temporal variation, which was detected by association rules analysis. Syndrome-related and non-specific relational patterns were detected in some months of meat inspection records. A potentially syndromic cluster was identified in May 2016 consisting of infection-related conditions: pericarditis, perihepatitis, peritonitis, and abnormal colour. Non-specific trends were identified in some months as an unusual combination of condemnation reasons in broiler batches. CONCLUSIONS: We conclude that the detection of relational patterns in meat inspection records could provide producer-level surveillance indicators with relevance to broiler chicken health and welfare.


Assuntos
Matadouros/normas , Bem-Estar do Animal , Inspeção de Alimentos/normas , Carne/normas , Doenças das Aves Domésticas/prevenção & controle , Registros/veterinária , Criação de Animais Domésticos , Animais , Galinhas , Estudos Longitudinais , Reino Unido
13.
Vet Med Sci ; 7(5): 1980-1988, 2021 09.
Artigo em Inglês | MEDLINE | ID: mdl-34378350

RESUMO

OBJECTIVES: This research aims to explore the factors motivate consumers to eat game meat during a multi-state disease outbreak. METHODS: It proposes a segmentation of consumers based on their attitudes toward and reveals the consumers' food beliefs that motivate their actions. Three segments of game meat consumers were identified: identity seekers, health seekers, and taste seekers. RESULTS: A survey of the potential impact that the COVID-19 crisis has on these three clusters' future food choices showed that the identity and health seekers are more open to a change in food choices. However, the taste seekers are less likely to be influenced by external factors. CONCLUSIONS: This research indicates that for the policymakers, the key is to take game meat consumers as an effective intervention entry point. It is crucial to facilitate healthy food choices and to promote socially- and culturally-appropriate food beliefs by improving public awareness of the risks of game meat, and invest in organic food. RESEARCH IMPLICATIONS: This research provides new insights into the food beliefs of game meat consumers via motivation-based segmentation.


Assuntos
Animais Selvagens/virologia , COVID-19/psicologia , Carne/normas , Motivação , Adulto , Análise de Variância , Animais , Ansiedade , COVID-19/etiologia , China , Comportamento de Escolha , Análise por Conglomerados , Análise Discriminante , Escolaridade , Feminino , Alimentos Orgânicos , Comportamentos Relacionados com a Saúde , Humanos , Renda , Masculino , Pessoa de Meia-Idade , Inquéritos e Questionários , Paladar
14.
Biomolecules ; 11(6)2021 06 03.
Artigo em Inglês | MEDLINE | ID: mdl-34205142

RESUMO

Lettuce (Lactuca sativa) was grown using a foliar spray with whey protein hydrolysate (WPH) as opposed to normal nitrate fertilization. Lettuce juice was prepared from lettuce cultivated without any fertilization, nitrate fertilization, or WPH. Sixty weaned, 4-week-old male V-line rabbits with an average 455 ± 6 g body weight were randomly divided into 4 groups (n = 15) and administered different lettuce juices. Rabbits administered WPH-fertilized lettuce showed significantly higher (n = 5, p < 0.05) body weight and carcass weight than those receiving nitrate-fertilized lettuce. Rabbits administered nitrate-fertilized lettuce were associated with significantly (p < 0.05) higher levels of liver enzyme activities (AST, ALT, and ALP), bilirubin (total, direct, and indirect), and kidney biomarkers (creatinine, urea, and uric acid). Rabbits administered WPH-fertilized lettuce avoided such increases and exhibited normal levels of serum proteins. Rabbits administered nitrate-fertilized lettuce manifested significantly (p < 0.05) lower RBCs and Hb levels than that of the other groups, while those receiving WPH-fertilized lettuce showed the highest levels. Liver and kidney sections of rabbits receiving WPH-fertilized lettuce witnessed the absence of the histopathological changes induced by feeding on nitrate-fertilized lettuce and produced higher quality meat. WPH-lettuce can substitute nitrate-fertilized lettuce in feeding rabbits for better performance and health aspects.


Assuntos
Peso Corporal/efeitos dos fármacos , Carne/normas , Nitratos/toxicidade , Hidrolisados de Proteína/administração & dosagem , Proteínas do Soro do Leite/administração & dosagem , Animais , Peso Corporal/fisiologia , Suplementos Nutricionais , Carne/análise , Coelhos
15.
Molecules ; 26(13)2021 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-34279373

RESUMO

Fatty acid content and lipid oxidation products were compared in chicken breast and leg meats derived from birds fed on animal-fat- and vegetable-oil-based diets, supplemented with ginseng prong powder. The first experiment examined polyunsaturated fatty acid (PUFA) content and the formation of primary and secondary lipid oxidation products in meats stored at refrigeration temperatures (4 °C) for up to 10 days, while the second experiment examined similar changes in the poultry meats when frozen stored at -18 °C, for up to six months. Results showed that initial lipid hydroperoxide concentrations increased in both breast and leg meat within the first week of refrigerated storage and also was ongoing during the first three to four months of frozen storage. A higher (p < 0.05) PUFA content in leg meat, especially in broilers fed a vegetable-oil-blended diet, corresponded to greater tendency for generation of primary lipid oxidation products after refrigerated and frozen storage (p < 0.05). The inclusion of powdered ginseng prong in broiler diets significantly inhibited (p < 0.05) secondary lipid oxidation products (e.g., malonaldehyde [MDA]) formation in both stored leg and breast meat, compared to controls. Significant interactions (p < 0.05) were obtained for storage time and inclusion of ginseng against production of primary and secondary lipid oxidation in broiler breast and leg meats from broilers fed PUFA-containing diets. We conclude that including ginseng prong in broiler growing diets represents a viable strategy to control lipid oxidation in refrigerated/cold-stored meat products.


Assuntos
Galinhas/metabolismo , Suplementos Nutricionais , Peroxidação de Lipídeos , Carne/normas , Panax/química , Extratos Vegetais/farmacologia , Animais , Ácidos Graxos Ômega-3/metabolismo , Alimentos Congelados/normas , Músculo Esquelético/efeitos dos fármacos , Músculo Esquelético/metabolismo , Extratos Vegetais/administração & dosagem
16.
Meat Sci ; 181: 108602, 2021 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-34175661

RESUMO

Hunted wild game meat (HGM) is growing in popularity and attracting a premium among consumers. This has led to the emergence of supply chains for industrially produced HGM in many countries. With the growing demand for Halal meat and the disposable income of its consumers around the globe, meat and game industries in countries rich in wild game and feral animals would be encouraged to consider supplying Halal hunted game meat (HHGM) to Halal consumers around the world. Meeting the Halal requirements for industrial HHGM is easy given the already existing supply chains for HGM in many producing countries. What is needed by the Game and Meat Industries in these countries to comply with the Halal requirements in terms of the hunted animal and the hunter, the hunt location, modes and methods, the handling and processing of hunted carcases and the hunted animal welfare and sustainability in the industrial production of HHGM, is the subject of this review.


Assuntos
Animais Selvagens , Carne/análise , Carne/normas , Bem-Estar do Animal , Animais , Manipulação de Alimentos/métodos , Qualidade dos Alimentos , Islamismo
17.
Sci Rep ; 11(1): 11897, 2021 06 07.
Artigo em Inglês | MEDLINE | ID: mdl-34099805

RESUMO

Water holding capacity (WHC) is an important sensory attribute that greatly influences meat quality. However, the molecular mechanism that regulates the beef WHC remains to be elucidated. In this study, the longissimus dorsi (LD) muscles of 49 Chinese Simmental beef cattle were measured for meat quality traits and subjected to RNA sequencing. WHC had significant correlation with 35 kg water loss (r = - 0.99, p < 0.01) and IMF content (r = 0.31, p < 0.05), but not with SF (r = - 0.20, p = 0.18) and pH (r = 0.11, p = 0.44). Eight individuals with the highest WHC (H-WHC) and the lowest WHC (L-WHC) were selected for transcriptome analysis. A total of 865 genes were identified as differentially expressed genes (DEGs) between two groups, of which 633 genes were up-regulated and 232 genes were down-regulated. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment revealed that DEGs were significantly enriched in 15 GO terms and 96 pathways. Additionally, based on protein-protein interaction (PPI) network, animal QTL database (QTLdb), and relevant literature, the study not only confirmed seven genes (HSPA12A, HSPA13, PPARγ, MYL2, MYPN, TPI, and ATP2A1) influenced WHC in accordance with previous studies, but also identified ATP2B4, ACTN1, ITGAV, TGFBR1, THBS1, and TEK as the most promising novel candidate genes affecting the WHC. These findings could offer important insight for exploring the molecular mechanism underlying the WHC trait and facilitate the improvement of beef quality.


Assuntos
Bovinos/genética , Perfilação da Expressão Gênica/métodos , Carne/análise , Músculo Esquelético/metabolismo , Carne Vermelha/análise , Água/metabolismo , Animais , China , Ontologia Genética , Redes Reguladoras de Genes , Carne/normas , Fenótipo , Mapas de Interação de Proteínas/genética , Carne Vermelha/normas , Análise de Sequência de RNA/métodos , Transdução de Sinais/genética
19.
ScientificWorldJournal ; 2021: 5536793, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34054357

RESUMO

Two hundred eight sheep, belonging to two main breeds of eastern Morocco, "Beni-Guil" and "Ouled-Djellal," were investigated for carcass traits and meat quality. The objective of this study is to determine the effects of breed and age at slaughter on carcass traits and meat quality. The animals were slaughtered at three age classes: milk teeth, animals with two adult teeth, and adult animals. Dressing percentage, carcass measurements, compactness indices, carcass shrinkage parameter, conformation scores, fatness state, fat consistency, fat and meat colour, and pH were measured 24 hours postmortem. The results showed that the dressing percentage, carcass measurements, and compactness indices increased with slaughter age (p < 0.001). Furthermore, the effect of breed was higher for Ouled-Djellal breed of carcass characteristics (p < 0.01). However, no significant effect was observed for carcass shrinkage parameter. The longissimus lumborum muscle was used to determine the meat colour, which ranged from 23.89 to 21.96, while the ultimate pH ranged from 5.70 to 5.82. These results were influenced by age at slaughter (p < 0.05) but not influenced by breed. Breed and age at slaughter had a significant influence on carcass traits (p < 0.001). The present study provided a new insight into the effect of breed and age at slaughter on carcass and meat traits of both "Beni-Guil-PGI" and Ouled-Djellal sheep breeds.


Assuntos
Carne/normas , Ovinos , Fatores Etários , Animais , Feminino , Qualidade dos Alimentos , Masculino , Marrocos , Especificidade da Espécie
20.
Meat Sci ; 179: 108556, 2021 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-34023677

RESUMO

This paper introduces the special edition of Meat Science focused upon the development, calibration and validation of technologies that measure traits influencing meat eating quality, or carcass fat and lean composition. These papers reflect the combined research efforts of groups in Australia, through the Advanced Livestock Measurement Technologies project, and New Zealand through AgResearch. We describe the various technologies being developed, how these devices are being trained upon common gold-standard measurements, and how their outputs are being simultaneously integrated into existing industry systems. We outline how this enhances the industry uptake and adoption of these technologies, and how this is further accelerated by education programs and strategic industry investment into their commercialisation.


Assuntos
Tecnologia de Alimentos/métodos , Gado , Carne/normas , Criação de Animais Domésticos/métodos , Animais , Austrália , Qualidade dos Alimentos , Nova Zelândia
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