Influence of dietary oils on performance, blood metabolites, purine derivatives, cellulase activity and muscle fatty acid composition in fattening lambs

Parvar, Reza; Ghoorchi, T.; Shargh, M Shams

doi:10.1016/j.smallrumres.2017.03.004

Cited by 23 publications

(20 citation statements)

References 39 publications

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“…The same was found in other studies where feedlot lambs supplemented with fish oil had greater concentrations of EPA and DHA in the Longissimus dorsi muscle compared with other treatments (Scollan et al, 2001;Ponnampalam et al, 2001;Wistuba et al, 2007;Jaworska et al, 2016). Also, PUFA (fish oil source) supplementation in lambs increases PUFA concentration in muscle (Parvar et al, 2017). Despite that biohydrogenation of PUFA occurs in the rumen, there is some passage of FA through the rumen that do not suffer biohydrogenation (Klein et al, 2008).…”

Section: Muscle Fatty Acid Compositionsupporting

confidence: 72%

“…The decrease in DMI was described previously in sheep fed with 3% of PUFA presented as tuna oil or dairy cows fed Ca salts with different degrees of saturation for 14 days (Kitessa et al, 2001;Relling and Reynolds, 2007). Previous studies in sheep by Ferreira et al (2014) and Parvar et al (2017) Downloaded from https://academic.oup.com/jas/advance-article-abstract/doi/10.1093/jas/sky360/5099475 by University of Connecticut user on 19 September 2018 A c c e p t e d M a n u s c r i p t observed no differences on DMI, ADG, BW and feed efficiency when lambs were supplemented with different amounts of PUFA, from 2.5% to 7.5%, of fish oil. However, Hernández-García et al 2017found a quadratic response in lambs fed with increasing concentration of fish oil for 56 d; lambs fed with lower concentration (1.03 % DM) had an increased BW, ADG and DMI compared with control (without oil) or high (2 and 3 % DM) fish oil concentration.…”

Section: Performancesupporting

confidence: 60%

“…The increase in HCW on C compared with PFA supplemented lambs could be a direct association with the heavier BW of these lambs. However, the responses on carcass characteristics in ruminants supplemented with different sources of PUFA is inconsistent (Ferreira et al, 2014;Hernandez-García et al, 2017;Parvar et al, 2017). This is possibly attributable to the inconsistency observed in BW changes when different sources and amounts of EPA and DHA have been supplemented.…”

Section: Performancementioning

confidence: 99%

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Prepartum fatty acid supplementation in sheep. III. Effect of eicosapentaenoic acid and docosahexaenoic acid during finishing on performance, hypothalamus gene expression, and muscle fatty acids composition in lambs1

Martín

Coleman

García

et al. 2018

Journal of Animal Science

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The objectives of this study were to evaluate the effect of feeding an enriched diet with eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) to finishing lambs born from ewes supplemented either with or without EPA and DHA during late gestation on productive performance, muscle fatty acid (FA), and hypothalamus mRNA concentration of metabolic genes and hormone receptors. Lambs born from dams fed during the last 50 d of gestation either with a control diet containing 0.39% Ca salts of palmitic fatty acid distillate (C) or Ca salts enriched with EPA and DHA (PFA) were used. After weaning lambs (n = 70) were blocked by weight (BW) and used in a 2 × 2 factorial into 2 finishing diets containing 1.5% of C or PFA. The 2 factors were the ewe diet and the finishing diet. Lambs (37.9 ± 0.4 kg) were weighed and blood sampled for glucose and NEFA measurements at days 1, 14, 28, and 42. Dry matter intake (DMI) was measured daily. At day 43, 14 females and 14 males were slaughtered, and hot carcass weight, body wall thickness, rib eye area, and FA composition of Longissumus thoracis muscle were evaluated. Female hypothalamuses were obtained and mRNA concentration of hormone receptors, neuropeptides, and their receptors was measured. Lambs born from PFA dams were heavier (P < 0.01). There was a time × finishing diet interaction for BW (P = 0.03), and lambs fed C had a greater BW. Lambs fed C had an increase in DMI (P < 0.01). There were no significant differences in plasma glucose and NEFA concentration (P > 0.1). Lambs born from PFA dams had a greater concentration of C22:0 (P < 0.03). Lambs fed C had higher concentrations of C18:1c15 (P < 0.01), C17:0 (P < 0.09), C18:0 (P < 0.09), and n6/n3 (P < 0.01). Lambs fed PFA had greater concentration (P < 0.05) of C16:1, C22:1, C20:5, C22:5, C22:6, total n3 FA, and total EPA and DHA. There was a significant dam × finishing diet interaction (P ≤ 0.08) on mRNA concentration for MCR3, CCK-R, Cort-R, and CART. Lambs, which had the same treatment as their dams, showed lower overall mRNA concentration than those with different treatments between them and their dams. Lambs born from PFA ewes had lower concentration of MCR4 mRNA (P = 0.09) than C. Agouti-related peptides mRNA concentration was lower in lambs fed PFA (P = 0.06) than C. In conclusion, changes on lamb performance, muscle fatty acid composition, and metabolic neuropeptides depend not only on the lamb diet, but also on the dam diet during late gestation.

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Section: Muscle Fatty Acid Compositionsupporting

confidence: 72%

Section: Performancesupporting

confidence: 60%

Section: Performancementioning

confidence: 99%

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Prepartum fatty acid supplementation in sheep. III. Effect of eicosapentaenoic acid and docosahexaenoic acid during finishing on performance, hypothalamus gene expression, and muscle fatty acids composition in lambs1

Martín

Coleman

García

et al. 2018

Journal of Animal Science

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“…Wistuba et al (2006) added 30 g fish oil/kg, which increased the lipid content in the diet to 67 g/kg DM and intake was decreased. A similar negative impact of fish oil inclusion (30 g/kg) on intake and growth of lambs was reported by Parvar et al (2017). Scollan et al (2001) suggested that the negative effects of fish oil inclusion seen in some studies are likely mediated by specific BH intermediates of fish oil rather than a negative effect of fish oil on rumen function, analogous to MFD.…”

Section: Effects On Animal Performancesupporting

confidence: 62%

“…Noci et al (2007) reported that increasing the level of fish oil fed to cattle led to a linear increase in the concentration of t9and t11-18:1, c9t11-CLA, EPA and DHA, and a decrease in the n-6 : n-3 ratio in intramuscular lipid. Parvar et al (2017) reported increases in EPA and DHA proportions in intramuscular lipid for lambs fed 3% fish oil but CLA or trans-18:1 isomers were not reported. With respect to algae, inclusion of DHA-rich Schizochytrium biomass in a lamb ration increased the concentration of EPA and DHA and decreased the n-6 : n-3 PUFA ratio in intramuscular lipid Table 1 Main changes in digesta, milk and meat concentrations of selected fatty acids (compared with the control diet) in response to diet supplementation with marine lipids rich in n-3 polyunsaturated fatty acids (PUFA) For each marine lipid, predominant responses (i.e.…”

Section: Improving the Fatty Acid Composition Of Meat And Milk Througmentioning

confidence: 93%

Review: Modulating ruminal lipid metabolism to improve the fatty acid composition of meat and milk. Challenges and opportunities

Toral

Monahan

Hervás

et al. 2018

Animal

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Growth in demand for foods with potentially beneficial effects on consumer health has motivated increased interest in developing strategies for improving the nutritional quality of ruminant-derived products. Manipulation of the rumen environment offers the opportunity to modify the lipid composition of milk and meat by changing the availability of fatty acids (FA) for mammary and intramuscular lipid uptake. Dietary supplementation with marine lipids, plant secondary compounds and direct-fed microbials has shown promising results. In this review, we have compiled information about their effects on the concentration of putative desirable FA (e.g. c9t11-CLA and vaccenic, oleic, linoleic and linolenic acids) in ruminal digesta, milk and intramuscular fat. Marine lipids rich in very long-chain n-3 polyunsaturated fatty acids (PUFA) efficiently inhibit the last step of C18 FA biohydrogenation (BH) in the bovine, ovine and caprine, increasing the outflow of t11-18:1 from the rumen and improving the concentration of c9t11-CLA in the final products, but increments in t10-18:1 are also often found due to shifts toward alternative BH pathways. Direct-fed microbials appear to favourably modify rumen lipid metabolism but information is still very limited, whereas a wide variety of plant secondary compounds, including tannins, polyphenol oxidase, essential oils, oxygenated FA and saponins, has been examined with varying success. For example, the effectiveness of tannins and essential oils is as yet controversial, with some studies showing no effects and others a positive impact on inhibiting the first step of BH of PUFA or, less commonly, the final step. Further investigation is required to unravel the causes of inconsistent results, which may be due to the diversity in active components, ruminant species, dosage, basal diet composition and time on treatments. Likewise, research must continue to address ways to mitigate negative side-effects of some supplements on animal performance (particularly, milk fat depression) and product quality (e.g. altered oxidative stability and shelf-life).

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Soybean oil, linoleic acid source, in lamb diets: carcass traits and meat quality

Lima,

da Silva,

de Freitas Júnior

et al. 2024

Trop Anim Health Prod

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Influence of dietary oils on performance, blood metabolites, purine derivatives, cellulase activity and muscle fatty acid composition in fattening lambs

Cited by 23 publications

References 39 publications

Prepartum fatty acid supplementation in sheep. III. Effect of eicosapentaenoic acid and docosahexaenoic acid during finishing on performance, hypothalamus gene expression, and muscle fatty acids composition in lambs1

Prepartum fatty acid supplementation in sheep. III. Effect of eicosapentaenoic acid and docosahexaenoic acid during finishing on performance, hypothalamus gene expression, and muscle fatty acids composition in lambs1

Review: Modulating ruminal lipid metabolism to improve the fatty acid composition of meat and milk. Challenges and opportunities

Soybean oil, linoleic acid source, in lamb diets: carcass traits and meat quality

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