Intramuscular fat and fatty acid profile of muscle of lambs finished in irrigated pasture

Lobo, A. M. B. O.; Bomfim, M. A. D.; Facó, Olivardo; Júnior, Gerardo Alves Fernandes; Ponciano, Márcio Freire; Lôbo, Raimundo Nonato Braga

doi:10.1080/09712119.2013.822810

Cited by 8 publications

(6 citation statements)

References 30 publications

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“…The tendency of higher C18:1n9c and lower C18:0 in FC than in the two yak groups indicates the high activity of delta-9 desaturase and high fat anabolism ( 79 ), which is consistent with the higher fat content in FC. It is also consistent with the report of Lobo et al that genotype plays an important role in body fat anabolism ( 80 ). Lower concentrations of linoleic and linolelaidic acids (C18:2n6c and n6t) were observed in the meat of GY than in FC and FY, which was due to the lower content of C18:2 in grass than in concentrate feed ( 81 ), as C18:2n6c in meat is derived wholly from dietary intake ( 82 ).…”

Section: Discussionsupporting

confidence: 93%

Effects of Management, Dietary Intake, and Genotype on Rumen Morphology, Fermentation, and Microbiota, and on Meat Quality in Yaks and Cattle

Ding

Jiang

et al. 2021

Front. Nutr.

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Traditionally, yaks graze only natural grassland, even in harsh winters. Meat from grazing yaks is considered very healthy; however, feedlot fattening, which includes concentrate, has been introduced. We questioned whether this change in management and diet would have an impact on the rumen and meat quality of yaks. This study examined the morphology, fermentation, and microbiota of the rumen and the quality of meat of three groups of bovines: (1) grazing yaks (GYs, 4-year olds), without dietary supplements; (2) yaks (FYs, 2.5-year olds) feedlot-fattened for 5 months after grazing natural pasture; and (3) feedlot-fattened cattle (FC, Simmental, 2-year olds). This design allowed us to determine the role of diet (with and without concentrate) and genotype (yaks vs. cattle) on variables measured. Ruminal papillae surface area was greater in the FYs than in the GYs (P = 0.02), and ruminal microbial diversity was greater but richness was lesser in the GYs than in the FC and FYs. Concentrations of ruminal volatile fatty acids were greater in the yaks than in the cattle. In addition, both yak groups had higher protein and lower fat contents in meat than the FC. Meat of GY had a lower n6:n3 ratio than FY and FC, and was the only group with a ratio below r, which is recommended for healthy food. Essential amino acids (EAA), as a proportion of total AA and of non-essential AA of yak meat, met WHO criteria for healthy food; whereas FC did not.

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Section: Discussionsupporting

confidence: 93%

Effects of Management, Dietary Intake, and Genotype on Rumen Morphology, Fermentation, and Microbiota, and on Meat Quality in Yaks and Cattle

Ding

Jiang

et al. 2021

Front. Nutr.

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“…The proportion of elaidic FA ranged from 0.64% (RBxMN lambs) to 1.7% (MN lambs) of total FA. Higher values were reported in Santa Inês lambs (2.43%) (Lôbo et al, 2013) and Nellore beef (2.9%) (Feitosa-Braga et al, 2017) in this FA. If one considers the MUFA ratios that were found in this study, and the theoretical basis that was supported, it can be suggested that the RBxMN breed shows a health advantage compared with other breeds and species.…”

Section: Discussioncontrasting

confidence: 47%

Effect of breed on meat quality and global acceptance of native lambs and their crosses

Lage¹,

Vega²,

Costa³

et al. 2020

SA J. An. Sci.

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International projections point to the growth in global production of sheep meat, mainly from developing countries. However, the exigencies of consumers on characterization of production systems, nutritional information, and sensorial analysis to target the preferences must be answered. The aim of this study was to characterize the meat quality and the global acceptance of Brazilian native ovine breeds and their crosses, and discuss these aspects on the current basis of human health and wellbeing. Three native breeds (Morada Nova, Rabo Largo, and Santa Inês) that were managed in semi-intensive systems and raised in semi-arid Brazilian regions were used. Chemical composition and fatty acid analysis, sensory evaluation and health indices were accessed. The combined effects of breed, sex and breed by sex interaction produced differentiation in meat fatty acid (FA) profiles. The cholesterol contents ranged between 51 and 59.1 mg/100 g. The Morada Nova lambs showed the lowest lipid content (1.93%). The Morada Nova x Rabo Largo crossbreed breed has the potential to increase the content of conjugated linoleic acid. The high content of α-linolenic acid, which is considered hypocholesterolemic, was responsible for better health indices. The moderate acceptability obtained in sensory traits is compatible with the requirements of the consumer market. The combination of nutritional and sensory traits associated with human health and wellbeing that is presented by these native ovine breeds qualifies them as a good choice of red meat to be included in a larger proportion in human food. Keywords: fatty acids, healthier meat, semi-arid region, sheep

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“…However, this difference was later minimized at lambing by the FLU treatment. The effect of genetic group on body condition score at lambing seems to reflect differences in predisposition to carcass fat deposition, which occurs to a greater extent in Brazilian Somalis animals in relation to the Morada Nova (LÔBO et al, 2014). The greater live weight and body condition score of ewes that lambed two and three lambs per birth in the pre-breeding season and the live weight in later events may have been an effect of their improved nutritional status influencing the number of viable lambs leading up to lambing.Incontrast, the decreased body condition score at lambing with the greater number of lambs per birth is likely due to the greater nutritional requirements of ewes with twin or triplet-births.In this regard, fetal count by ultrasound at early stages of gestation (30-40 days), associated with a more refined nutritional management in the final third of gestation, can reduce the loss of body condition score due to twin pregnancies.…”

Section: Resultsmentioning

confidence: 99%

Corn-based or high linoleic acid flushing increases productivity of Morada Nova and Brazilian Somalis ewes

Sousa

Bomfim

Albuquerque

et al. 2019

Rev. bras. saúde prod. anim.

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SUMMARY The objective of this study was to compare the corn-based (FLU), high linoleic acid flushings(LAF), and a control treatment (un supplemented, CON); two genetic groups:Morada Nova (MN) and Brazilian Somalis (BS), on the productive and reproductive performance of ewes and their lambs. A total of 156 non-pregnant ewes were supplemented three weeks before and after the breeding season. Supplementation with either FLU or LAF increased ewe body condition score (BCS) at the beginning of the breeding season and at lambing compared to CON. The BS ewes had greater body weights at the supplementation end, and BCS both at the supplementation start, and at lambing compared to MN. Similarly, ewes with three lambs per birth had greater BCS at the beginning of supplementation. They also had greater weights at the beginning of the breeding season and at lambing. Both FLU and LAF increased total lamb weight from 56 to 105 days of age compared to CON.The BS ewes had decreased prolificity and produced lower total weight of lambs at lambing, but greater 84 and 105 days after birth compared to MN. Total lambweight at birth was greater for ewes that lambed three, followed by two and then one lamb per birth. In conclusion, the high linoleic acid and high corn supplementation increase body condition score of ewes form breeding season to lambing and enhance lamb performance after 56 days of age. Although Morada Nova ewes increased prolificacy, their lambs were lighter after they reached 84 days of age.

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Intramuscular fat and fatty acid profile of muscle of lambs finished in irrigated pasture

Cited by 8 publications

References 30 publications

Effects of Management, Dietary Intake, and Genotype on Rumen Morphology, Fermentation, and Microbiota, and on Meat Quality in Yaks and Cattle

Effects of Management, Dietary Intake, and Genotype on Rumen Morphology, Fermentation, and Microbiota, and on Meat Quality in Yaks and Cattle

Effect of breed on meat quality and global acceptance of native lambs and their crosses

Corn-based or high linoleic acid flushing increases productivity of Morada Nova and Brazilian Somalis ewes

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