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intramuscular fat

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https://www.readbyqxmd.com/read/28728406/early-weaning-of-calves-after-different-dietary-regimens-affects-later-rumen-development-growth-and-carcass-traits-in-hanwoo-cattle
#1
Kondreddy Eswar Reddy, JinYoung Jeong, Youl-Chang Baek, Young Kyun Oh, Minseok Kim, Kyung Min So, Min Ji Kim, Dong Woon Kim, Sung Kwon Park, Hyun-Jeong Lee
Objective: The main objective of this study was to determine the effect of different diets for early-weaned (EW) calves on rumen development, and how this affects fat deposition in the longissimus dorsi of adult Korean Hanwoo beef cattle. Methods: Three EW groups were established (each n = 12) in which two- week-old Hanwoo calves were fed for ten weeks with milk replacer + concentrate (T1), milk replacer + concentrate + roughage (T2), or milk replacer + concentrate + 30% starch (T3); a control group (n = 12) was weaned as normal...
July 6, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28728355/identification-of-genes-related-to-intramuscular-fat-content-of-pig-using-genome-wide-association-study
#2
Sohyoung Won, Jaehoon Jung, Eungwoo Park, H B Kim
Objective: The aim of this study is to identify SNPs and genes related to pig IMF and estimate the heritability of IMF. Methods: Genome-wide association study (GWAS) on 704 inbred Berkshires was performed for intramuscular fat content (IMF). To consider the inbreeding among samples, associations of the SNPs with IMF were tested as random effects in a mixed linear model using the genetic relationship matrix by GEMMA. Significant genes were compared with reported pig IMF QTL regions and functional classification of the identified genes were also performed...
June 27, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28727124/similar-effects-of-lysine-deficiency-in-muscle-biochemical-characteristics-of-fatty-and-lean-piglets
#3
P Palma-Granados, A Haro, I Seiquer, L Lara, J F Aguilera, R Nieto
The main objective of this work was to investigate the effects of feeding Lys-deficient diets on muscle biochemical characteristics, particularly intramuscular fat concentration and fatty acid profile, in a fatty (Iberian) and a conventional pig genotype (Landrace × Large White [LDW]) maintained in identical experimental conditions. Performance and plasma metabolite changes were also monitored. Twenty-eight barrows of 10 kg initial BW, 14 of Iberian and 14 of LDW breed, were randomly assigned to each of 2 experimental diets in a 2 × 2 factorial arrangement (2 breeds × 2 diets)...
July 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727051/carotenoid-intake-and-scd-genotype-exert-complementary-effects-over-fat-content-and-fatty-acid-composition-in-duroc-pigs
#4
E Henriquez-Rodriguez, R N Pena, A R Seradj, L Fraile, P Christou, M Tor, J Estany
Nutritional and genetic strategies are needed to enhance intramuscular fat (IMF) and MUFA content without altering carcass leanness. Dietary vitamin A restriction has been suggested to specifically promote IMF, whereas a polymorphism of the () gene has shown to specifically increase MUFA. The purpose of this study was to investigate the combined effects of provitamin A (PVA) carotenoid intake and genotype (>) on hepatic retinoid content and on the liver, muscle (LM and gluteus medius [GM]), and subcutaneous fat (SF) content and fatty acid composition...
June 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727044/muscle-lipid-metabolism-in-two-rabbit-lines-divergently-selected-for-intramuscular-fat
#5
M Martínez-Álvaro, S Agha, A Blasco, P Hernández
A divergent selection experiment for intramuscular fat (IMF) of LM at 9 wk of age was performed in rabbits. The objective of this work was to compare the lipid metabolism in muscles and fat tissues of the high-IMF and low-IMF lines. Lipogenic, catabolic, and lipolytic activities were studied in 2 muscles with different oxidative patterns (LM and semimembranosus proprius) and in the perirenal fat depot at 2 ages, 9 and 13 wk. In addition, adipocytes were characterized in perirenal fat. In the fifth generation, direct response to selection was 0...
June 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727022/triennial-growth-and-development-symposium-genetics-and-breeding-for-intramuscular-fat-and-oleic-acid-content-in-pigs
#6
J Estany, R Ros-Freixedes, M Tor, R N Pena
The intramuscular fat (IMF) and oleic acid (OL) content have been favorably related to pork quality and human health. This influences the purchasing behavior of consumers and, therefore, also shifts the attention of breeding companies toward whether these traits are included into the breeding goal of the lines producing for high-valued markets. Because IMF and OL are unfavorably associated with lean content, a key economic trait, the real challenge for the industry is not simply to increase IMF and OL, but rather to come up with the right trade-off between them and lean content...
May 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727019/triennial-growth-and-development-symposium-dedifferentiated-fat-cells-potential-and-perspectives-for-their-use-in-clinical-and-animal-science-purpose
#7
M S Duarte, R Bueno, W Silva, C F Campos, M P Gionbelli, S E F Guimarães, F F Silva, P S Lopes, G J Hausman, M V Dodson
An increasing body of evidences has demonstrated the ability of the mature adipocyte to dedifferentiate into a population of proliferative-competent cells known as dedifferentiated fat (DFAT) cells. As early as the 1970s, in vitro studies showed that DFAT cells may be obtained by ceiling culture, which takes advantage of the buoyancy property of lipid-filled cells. It was documented that DFAT cells may acquire a phenotype similar to mesenchymal stem cells and yet may differentiate into multiple cell lineages, such as skeletal and smooth muscle cells, cardiomyocytes, osteoblasts, and adipocytes...
May 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727015/triennial-growth-and-development-symposium-molecular-mechanisms-related-to-bovine-intramuscular-fat-deposition-in-the-longissimus-muscle
#8
M Baik, H J Kang, S J Park, S W Na, M Piao, S Y Kim, D M Fassah, Y S Moon
The intramuscular fat (IMF) content of the LM, also known as marbling, is particularly important in determining the price of beef in Korea, Japan, and the United States. Deposition of IMF is influenced by both genetic (e.g., breed, gender, and genotype) and nongenetic factors (e.g., castration, nutrition, stressors, animal weight, and age). Castration of bulls markedly increases deposition of IMF, resulting in improved beef quality. Here, we present a comparative gene expression approach between bulls and steers...
May 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727003/triennial-growth-and-development-symposium-intramuscular-fat-deposition-in-ruminants-and-pigs-a-transcriptomics-perspective
#9
B P Dalrymple, B Guo
The genomics era has led to an explosion in the study of gene expression in production animals. Intramuscular fat (IMF) content (both high and low) and composition are major quality attributes of meat, and more than 90 transcriptomic studies of IMF deposition have been undertaken in the ruminants and pigs since 2001, with the majority since 2008. The studies have implicated many genes involved in the control of adipogenesis, lipogenesis, and deposition of IMF, but there is relatively little consistency between the different studies...
May 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28726981/triennial-growth-and-development-symposium-factors-influencing-bovine-intramuscular-adipose-tissue-development-and-cellularity
#10
E Albrecht, L Schering, Y Liu, K Komolka, C Kühn, K Wimmers, T Gotoh, S Maak
Appearance, distribution, and amount of intramuscular fat (IMF), often referred to as marbling, are highly variable and depend on environmental and genetic factors. On the molecular level, the concerted action of several drivers, including hormones, receptors, transcription factors, etc., determines where clusters of adipocytes arise. Therefore, the aim of future studies remains to identify such factors as biological markers of IMF to increase the ability to identify animals that deposit IMF early in age to increase efficiency of high-quality meat production...
May 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28724410/identification-and-characterization-of-long-non-coding-rnas-in-subcutaneous-adipose-tissue-from-castrated-and-intact-full-sib-pair-huainan-male-pigs
#11
Jing Wang, Liushuai Hua, Junfeng Chen, Jiaqing Zhang, Xianxiao Bai, Binwen Gao, Congjun Li, Zhihai Shi, Weidong Sheng, Yuan Gao, Baosong Xing
BACKGROUND: Long non-coding RNAs (lncRNAs) regulate adipose tissue metabolism, however, their function on testosterone deficiency related obesity in humans is less understood. For this research, intact and castrated male pigs are the best model animal because of their similar proportional organ sizes, cardiovascular systems and metabolic features. RESULTS: We identified lncRNAs in subcutaneous adipose tissue by deep RNA-sequencing using the intact and castrated Huainan male pigs...
July 19, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28724349/16s-rrna-gene-based-association-study-identified-microbial-taxa-associated-with-pork-intramuscular-fat-content-in-feces-and-cecum-lumen
#12
Shaoming Fang, Xingwei Xiong, Ying Su, Lusheng Huang, Congying Chen
BACKGROUND: Intramuscular fat (IMF) that deposits among muscle fibers or within muscle cells is an important meat quality trait in pigs. Previous studies observed the effects of dietary nutrients and additives on improving the pork IMF. Gut microbiome plays an important role in host metabolism and energy harvest. Whether gut microbiota exerts effect on IMF remains unknown. RESULTS: In this study, we investigated the microbial community structure of 500 samples from porcine cecum and feces using high-throughput 16S rRNA gene sequencing...
July 19, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28723735/microanatomical-location-of-hyaluronic-acid-gel-following-injection-of-the-upper-lip-vermillion-border-comparison-of-needle-and-microcannula-injection-technique
#13
Alexander D Blandford, Catherine J Hwang, Jason Young, Alexander C Barnes, Thomas P Plesec, Julian D Perry
PURPOSE: To compare needle and microcannula injection techniques in regards to the microanatomical location of hyaluronic acid (HA) gel injected in the upper lip vermillion border of cadaver specimens. METHODS: The upper lip vermillion border was injected transcutaneously with HA gel in 8 fresh hemifaces of 4 female human cadavers. Each hemiface was injected by a single experienced injector, the right side using a 27-gauge microcannula and the left side using a 30-gauge needle...
July 18, 2017: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28720155/effect-of-slaughter-age-and-feeding-system-on-the-neutral-and-polar-lipid-composition-of-horse-meat
#14
X Belaunzaran, P Lavín, A R Mantecón, J K G Kramer, N Aldai
This study was undertaken to provide a thorough analysis of the neutral lipid (NL) and polar lipid (PL) fractions of horse meat that included the content and distribution of acyl and alkenyl moieties in foals under different rearing conditions. Two groups of crossbred horses were studied; the first group was selected from suckling foals produced under grazing conditions and slaughtered at 4 months of age (n=8), and the second group was selected from concentrate-finished foals and slaughtered at 12 months of age (n=7)...
July 19, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28715374/in-vivo-evaluation-of-the-mechanical-and-viscoelastic-properties-of-the-rat-tongue
#15
Emanuele Loro, Stephen H Wang, Richard J Schwab, Tejvir S Khurana
The tongue is a highly innervated and vascularized muscle hydrostat on the floor of the mouth of most vertebrates. Its primary functions include supporting mastication and deglutition, as well as taste-sensing and phonetics. Accordingly, the strength and volume of the tongue can impact the ability of vertebrates to accomplish basic activities such as feeding, communicating, and breathing. Human patients with sleep apnea have enlarged tongues, characterized by reduced muscle tone and increased intramuscular fat that can be visualized and quantified by magnetic resonance imaging (MRI)...
July 6, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28709001/ciliary-hedgehog-signaling-restricts-injury-induced-adipogenesis
#16
Daniel Kopinke, Elle C Roberson, Jeremy F Reiter
Injured skeletal muscle regenerates, but with age or in muscular dystrophies, muscle is replaced by fat. Upon injury, muscle-resident fibro/adipogenic progenitors (FAPs) proliferated and gave rise to adipocytes. These FAPs dynamically produced primary cilia, structures that transduce intercellular cues such as Hedgehog (Hh) signals. Genetically removing cilia from FAPs inhibited intramuscular adipogenesis, both after injury and in a mouse model of Duchenne muscular dystrophy. Blocking FAP ciliation also enhanced myofiber regeneration after injury and reduced myofiber size decline in the muscular dystrophy model...
July 13, 2017: Cell
https://www.readbyqxmd.com/read/28707952/systemic-delivery-of-dysferlin-overlap-vectors-provides-long-term-functional-improvement-for-dysferlinopathy
#17
Rachael A Potter, Danielle A Griffin, Patricia C Sondergaard, Ryan W Johnson, Eric R Pozsgai, Kristin N Heller, Ellyn L Peterson, Kimmo K Lehtimaki, Hillarie P Windish, Plavi J Mittal, Doug E Albrecht, Jerry R Mendell, Louise R Rodino-Klapac
Dysferlinopathies comprise a family of disorders caused by mutations in the dysferlin (DYSF) gene leading to a progressive dystrophy characterized by chronic muscle fiber loss, fat replacement and fibrosis. To correct the underlying histopathology and function, expression of full-length DYSF is required. We have developed dual adeno-associated virus vectors defined by a region of homology to serve as a substrate for reconstitution of the full 6.5 kb dysferlin cDNA. Our previous work studied the efficacy of this treatment through intramuscular and regional delivery routes...
July 14, 2017: Human Gene Therapy
https://www.readbyqxmd.com/read/28706492/lower-expression-of-slc27a1-enhances-intramuscular-fat-deposition-in-chicken-via-down-regulated-fatty-acid-oxidation-mediated-by-cpt1a
#18
Fengfang Qiu, Liang Xie, Jing-E Ma, Wen Luo, Li Zhang, Zhe Chao, Shaohao Chen, Qinghua Nie, Zhemin Lin, Xiquan Zhang
Intramuscular fat (IMF) is recognized as the predominant factor affecting meat quality due to its positive correlation with tenderness, juiciness, and flavor. Chicken IMF deposition depends on the balance among lipid synthesis, transport, uptake, and subsequent metabolism, involving a lot of genes and pathways, however, its precise molecular mechanisms remain poorly understood. In the present study, the breast muscle tissue of female Wenchang chickens (WC) (higher IMF content, 1.24 in D120 and 1.62 in D180) and female White Recessive Rock chickens (WRR; lower IMF content, 0...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28696026/a-genome-wide-association-study-for-a-proxy-of-intermuscular-fat-level-in-the-italian-large-white-breed-identifies-genomic-regions-affecting-an-important-quality-parameter-for-dry-cured-hams
#19
L Fontanesi, G Schiavo, G Galimberti, S Bovo, V Russo, M Gallo, L Buttazzoni
Intermuscular fat content in protected designations of origin dry-cured hams is a very important meat quality trait that affects the acceptability of the product by the consumers. An excess in intermuscular fat (defined as the level of fat deposition between leg muscles) is a defect that depreciates the final product. In this study we carried out a genome-wide association study for visible intermuscular fat (VIF) of hams in the Italian Large White pig breed. This trait was evaluated on the exposed muscles of green legs in 1122 performance-tested gilts by trained personnel, according to a classification scale useful for routine and cheap evaluation...
August 2017: Animal Genetics
https://www.readbyqxmd.com/read/28675104/meat-quality-free-fatty-acid-concentration-and-oxidative-stability-of-pork-from-animals-fed-diets-containing-different-sources-of-selenium
#20
Luis Calvo, José Segura, Fidel Toldrá, Mónica Flores, Ana I Rodríguez, Clemente J López-Bote, Ana I Rey
This study evaluates the effect of the source of dietary selenium supplementation (organic versus mineral) and the combined effect of organic selenium and vitamin E on the fatty acid composition and lipolysis in pork intramuscular fat and other meat quality characteristics such as drip loss and lipid stability. Higher vitamin E deposition, lower drip loss, and higher stability against oxidation were detected in muscle from pigs fed organic selenium. Also higher proportion of free fatty acids was observed in intramuscular fat from pigs fed organic selenium than those fed inorganic selenium, being these mainly coming from neutral lipid fraction...
January 1, 2017: Food Science and Technology International, Ciencia y Tecnología de Los Alimentos Internacional
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