Gestational nutrient restriction under extensive grazing conditions: Effects on muscle characteristics and meat quality in heavy lambs

Ithurralde, Javier; Pérez-Clariget, Raquel; Saadoun, A.; Genovese, P.; Cabrera, Carlos; López, Y.; Feed, O.; Bielli, Alejandro

doi:10.1016/j.meatsci.2021.108532

Cited by 7 publications

(4 citation statements)

References 35 publications

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“…[ 87 ] conducted a review of studies on the effects of fetal programming and maternal nutrition and found the influence of age and gender on CL. This result was also found by [ 88 ], in which maternal malnutrition had an effect on the muscle of lambs with increased loss in the Semitendinosus muscle of males.…”

Section: Discussionsupporting

confidence: 85%

Fetal Programming and Its Effects on Meat Quality of Nellore Bulls

Christofaro Fernandes,

Beline,

Polizel

et al. 2023

Veterinary Sciences

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This work aimed to evaluate the effects of prenatal nutritional stimulation at different pregnancy stages on carcass traits and meat quality in bovine progeny. For this purpose, 63 Nellore bulls, born from cows submitted to three nutritional plans, were used: not programmed (NP), which did not receive protein supplementation; partially programmed (PP), which had protein-energy supplementation (0.3% of mean body weight of each batch) only in the final third of pregnancy; and full programming (FP), which received supplementation (0.3% of mean body weight of each batch) throughout pregnancy. The averages of parameters were submitted to the ANOVA, and the supplementation periods, which were different when p value < 0.05, were compared. Carcass weights and rib eye area (REA) did not differ between treatments (p > 0.05), but subcutaneous fat thickness (SFT) showed a tendency (p = 0.08) between groups. For lipids and marbling, no differences were found (p > 0.05). In the analyses of maturation time and shelf life, no difference was observed between treatments. However, there was a tendency between treatments at 14 days of maturation time for cooking loss (CL) (p = 0.08). Treatments did not affect shear force in the progenies (p > 0.05). Fetal programming had no effect on the meat quality of Nellore bulls.

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Section: Discussionsupporting

confidence: 85%

Fetal Programming and Its Effects on Meat Quality of Nellore Bulls

Christofaro Fernandes,

Beline,

Polizel

et al. 2023

Veterinary Sciences

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“…However, conducted a review of studies on the effects of fetal programming and maternal nutrition and found the influence of age and gender on cooking losses. This result was also found by Ithurralde et al (2021), in which maternal malnutrition had an effect on the muscle of lambs with increased losses in the Semitendinosus muscle of males.…”

Section: Cooking Weight Lossessupporting

confidence: 67%

Efeitos da programação fetal de novilhos Nelore na qualidade da carne e no metaboloma muscular e adiposo

Fernandes

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A Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) [2021/03802-7] por financiar a maior parte da minha bolsa de mestrado e por fomentar o projeto de pesquisa ao qual meu trabalho faz parte [2017/12105-2].Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) pelo apoio financeiro na execução do projeto de pesquisa [307593/2021-5].E também à Coordenação de Aperfeiçoamento de Pessoal de Nível Superior -Brasil (CAPES) -Processo: 88887.492972/2020-00" por subsidiar os meses inicias da minha bolsa de mestrado.As orientações e grupo de pesquisa... Ao meu orientador, Prof. Dr. Miguel Santana por todo suporte, conhecimento e paciência comigo e meu trabalho, que aceitou esse desafio de me orientar e não mediu esforços para me conduzir a realização de mais uma etapa.A minha co-orientadora, Dra. Mirele Poleti, pela assistência com o desenvolver do trabalho e correção das etapas.Ao meu grupo de estudo, GOPec, em especial aos pós-graduandos e equipe de estagiários, que permitiram a realização desse trabalho. As instituições acadêmicas e profissionais...A minha Faculdade de coração FZEA-USP, que proporcionou o melhor ambiente para a realização do meu projeto com estrutura física, pessoal (funcionários) e financeira.Aos colaboradores terceiros, dentre eles empresas, laboratórios, técnicos e acadêmicos.Aos familiares e amigos... Aos meus pais e irmãs que me deram o suporte para poder realizar este trabalho. Ao meu namorado por todo cuidado emocional e incentivo na realização do meu mestrado.Aos meus amigos que me ajudaram de alguma forma no percurso desse trabalho. ResumoA pecuária de corte brasileira representa uma parte expressiva da produção de carne no mundo, sendo o maior exportador, e vem tentando melhorar e otimizar sua produtividade para atender e superar as demandas do mercado e do crescimento populacional. A sazonalidade forrageira se coloca como um dos principais desafios dessa produção, já que a criação dos bovinos acontece majoritariamente sob o sistema extensivo. Com isso é necessário a implantação de estratégias nutricionais antes mesmo do nascimento do animal, para garantir um aporte nutricional de qualidade para as matrizes gestarem adequadamente. E isso acontece por meio da programação fetal, quando estímulos gerados durante a gestação são refletidos na prole. Deste modo, o objetivo do presente estudo foi avaliar a influência da suplementação materna durante a gestação de machos Nelore sobre a qualidade de carne desses novilhos e da análise do perfil metabólico do músculo esquelético e da gordura subcutânea. Para tal foram utilizados 63 novilhos da raça Nelore para as análises de qualidade da carne, 18 para a metabolômica da carne e 15 para a gordura. Esses animais eram provenientes de 3 tratamentos experimentais, em que suas mães durante a gestação receberam ou não suplementação: NP -Não Programado, não recebeu suplemento proteicoenergético em nenhum momento, PP-Parcialmente Programado, recebeu suplemento proteico-energético apenas no terço final de gestação e PC -Programação Comple...

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“…In fact, skeletal muscle fibers are normally classified based on selective cellular components that are directly involved in the specific contractile and metabolic activities. In the sheep fetus, muscle fiber numbers are complete at approximately 80 days of gestation [ 2 , 3 ]. These numbers are determined genetically and have heritability estimates of 0.17–0.38.…”

Section: Introductionmentioning

confidence: 99%

Influence of Dietary Protein Source and Level on Histological Properties of Muscle and Adipose Tissue of Lambs

Marzo

Losacco

Laudadio

et al. 2023

Foods

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The muscle and adipose tissue histological properties in wether and ewe lambs of Gentile di Puglia breed, fed diets including two protein sources [soybean meal (SB) and SB plus distillers dried grain with solubles (DD)] and three protein levels (12.5, 15.7, and 18.9%) were evaluated. Muscle samples were collected from the longissimus/rump, cut, and stained (reciprocal aerobic and anaerobic stains) for muscle fiber typing and fat cell characterization. Fibers were classified as α-red, β-red, and α-white. Lambs fed SB had larger α-white (p < 0.10) and smaller-diameter β-red and α-red fibers (p < 0.05). Among dietary protein levels, lambs fed 12.5% protein exhibited the highest percentage of α-red and the greatest diameter of α-white fibers, whereas wethers had a higher percentage of α-red (p < 0.05), and ewes had a higher percentage of α-white fibers (p < 0.05). Intramuscular fat cells were larger (p < 0.10) in ewes than in wethers. Lambs in the group fed 12.5% protein had larger subcutaneous fat cells at the sacral vertebrae location. Overall, both sources and levels of dietary protein had significant effects on lamb muscle and fat histological features, suggesting the potential of modulating muscle or fiber types through dietary protein strategies.

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Gestational nutrient restriction under extensive grazing conditions: Effects on muscle characteristics and meat quality in heavy lambs

Cited by 7 publications

References 35 publications

Fetal Programming and Its Effects on Meat Quality of Nellore Bulls

Fetal Programming and Its Effects on Meat Quality of Nellore Bulls

Efeitos da programação fetal de novilhos Nelore na qualidade da carne e no metaboloma muscular e adiposo

Influence of Dietary Protein Source and Level on Histological Properties of Muscle and Adipose Tissue of Lambs

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