Effects of a <scp>DHA</scp>‐rich unextracted microalgae as a dietary supplement on performance, carcass traits and meat fatty acid profile in growing‐finishing pigs

Moran, C. A.; Morlacchini, M.; Keegan, Jason D.; Delles, Rebecca M.; Fusconi, G.

doi:10.1111/jpn.12911

Cited by 30 publications

(17 citation statements)

References 32 publications

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“…has been shown to increase the DHA content of broiler meat [ 13 ], while maintaining consumer acceptability without reducing shelf life [ 14 ]. Aurantiochytrium limacinum, a related microalgae, when grown heterotrophically on a low-sodium medium has also been shown to increase the DHA content of cows’ milk [ 15 , 16 ], of pig muscle tissue [ 17 , 18 ], and hens’ eggs [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Tolerance of Broilers to Dietary Supplementation with High Levels of the DHA-Rich Microalga, Aurantiochytrium Limacinum: Effects on Health and Productivity

Moran¹,

Currie

Keegan

et al. 2018

Animals

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Simple SummaryDocosahexaenoic acid (DHA) is an omega-3 fatty acid that is considered an essential part of the human diet. Increasing the amount of DHA in commonly consumed foodstuffs can benefit people predisposed to heart problems, depression, and even some forms of cancer. One of the best sources of DHA is oily fish, but the majority of people do not eat fish regularly. By formulating diets for livestock or poultry to include ingredients rich in omega-3 fatty acids, we can increase the omega-3 content of their respective meat and tissues. In this study we fed broilers diets supplemented with increasing amounts of a DHA-rich microalgae to investigate whether it was safe for the birds, in terms of their health and productivity and effective in terms of DHA transfer from feed to meat. The results of the present study showed that feeding the microalgae to chickens had no negative effects on their health in terms of their level of survival or growth. Moreover, we found that supplementing the microalgae resulted in a large increase in the DHA content of meat. This study demonstrated that feeding algae is a safe and effective way to improve the nutritional value of chicken meat.AbstractIt is well established that the docosahexaenoic acid (DHA) content of commonly consumed meats, such as chicken, can be increased through dietary supplementation with DHA-rich ingredients. The purpose of this study was to investigate the tolerance of broilers to dietary supplementation with the unextracted biomass of a DHA-rich microalgae Aurantiochytrium limacinum, so as to ensure its safety, since it is accumulated in broiler meat. Healthy day-old male Ross 308 chicks (n = 1120) were evenly distributed to 32 pens (35 chicks per pen), with pens randomly allocated to one of four dietary treatments, each having eight replicates. The dietary groups included one untreated control and three treatments corresponding to three inclusion levels (0.5, 2.5, and 5.0%) of All-G-Rich®, with the birds receiving the experimental diets ad libitum during the study (day 0–42). Bird survival, blood parameters, productivity, and breast and thigh DHA content were determined after 42 days of feeding. Supplementation at up to 10 times the intended use level had no negative effects on the mortality, blood parameters or productivity of the birds, while significant increases in the meat DHA content were observed. These results indicate that supplementation with Aurantiochytrium limacinum is a safe and effective way to increase broiler tissue DHA content.

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Section: Introductionmentioning

confidence: 99%

Tolerance of Broilers to Dietary Supplementation with High Levels of the DHA-Rich Microalga, Aurantiochytrium Limacinum: Effects on Health and Productivity

Moran¹,

Currie

Keegan

et al. 2018

Animals

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“…When considering supplementing a pig diet with PUFA n-3 based on a comparison with the results of recently published studies, it is important to take account of the source and amount of PUFA n-3 in the diet, the length of the fattening interval, and the number of animals in the experimental (control) group. Animal numbers per test group are usually in the range of eight [11] to 24 [18]. Only six pigs per group were used in the present study due to the fact that the experiment was not performed in a production facility, but in an experimental stable of the research institute with a limited capacity.…”

Section: Discussionmentioning

confidence: 99%

Effect of High Dietary Level (8%) of Fish Oil on Long-Chain Polyunsaturated Fatty Acid n-3 Content in Pig Tissues and Plasma Biochemical Parameters

Komprda

Jůzl

Matejovičová

et al. 2020

Animals

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There were two objectives of the present study using dietary fish oil (FO) in pigs: to use pigs as a model for studying the effects of high FO doses on selected physiological markers; and to evaluate the physical traits and nutritive value of pork enriched with long-chain polyunsaturated fatty acids n-3. Two groups of six female pigs were fed for 30 days with either a standard feed mixture (control, C) or the same mixture supplemented with 8% FO (F). Physical characteristics of the muscle, fatty acid deposition in tissues and selected hematologic and plasma markers were tested. The daily weight gain of the F-pigs was lower in comparison with controls (p < 0.05). Dietary fish oil decreased Warner-Bratzler shear force of the longissimus muscle (p < 0.01). The eicosapentaenoic and docosahexaenoic acid content was higher (p < 0.05) in all tested F-tissues. Dietary fish oil had no effect on plasma cholesterol (p < 0.05), but it increased plasma triacylglycerol levels by 260% (p < 0.05), and increased counts of leukocytes, neutrophils, and eosinophils in the blood plasma (p < 0.05). In conclusion, high dietary FO improved the texture and nutritive value of meat, but negatively affected plasma biochemical parameters.

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“…The algal subject of this paper, Aurantiochytrium limacinum is a microalgae that has been shown to increase the DHA content of milk [15] [16], of pig muscle tissue [17] [18], broiler [19] and of laying hen eggs [20] when supplemented to the animal diets.…”

Section: Introductionmentioning

confidence: 99%

Analytical Method Assessment for the Determination of DHA and Fatty Acids Present in Unextracted <i>Aurantiochytrium limacinum</i> Biomass

Dillon¹,

Yiannikouris²,

Brandl³

et al. 2019

FNS

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Research into long-chain polyunsaturated fatty acids (LC-PUFA), such as docosahexaenoic acid (DHA C22:6 n-3), has shown that their inclusion in the human diet is linked with many health benefits. This has led to an increased interest in the enrichment of certain foodstuffs with DHA by supplementing animal fed with DHA-rich ingredients which can lead to an increased uptake in the meat, milk and eggs animal by-products. The microalgae Aurantiochytrium limacinum has been found to be especially useful in this pursuit. It is subsequently desirable to availably have a simple and robust method for the routine analysis of DHA and other fatty acids in the algal biomass. The AOAC method 996.06 is often followed for the analysis of fatty acids in foods and demonstrating that its fitness for purpose in the analysis of DHA and additional fatty acids in Aurantiochytrium limacinum is therefore the objective of this paper. A validation of the method for the determination of DHA and three other fatty acids in Aurantiochytrium limacinum is presented. The method was found to be linear over the following ranges for each fatty acid methyl ester (FAME) analyte; 50 to 15,000 µg/ml (C14:0), 300 to 95,000 (C16:0), 25 to 15,000 (C18:0) and 300 to 59,375 (C22:6). The accuracy, precision and LOD and LOQ of the method were confirmed and its robustness tested. The application of the method to assess the stability of Aurantiochytrium limacinum containing two alternative antioxidants was further examined. The investigation showed that DHA was stable over six months with the inclusion

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Effects of a DHA‐rich unextracted microalgae as a dietary supplement on performance, carcass traits and meat fatty acid profile in growing‐finishing pigs

Cited by 30 publications

References 32 publications

Tolerance of Broilers to Dietary Supplementation with High Levels of the DHA-Rich Microalga, Aurantiochytrium Limacinum: Effects on Health and Productivity

Tolerance of Broilers to Dietary Supplementation with High Levels of the DHA-Rich Microalga, Aurantiochytrium Limacinum: Effects on Health and Productivity

Effect of High Dietary Level (8%) of Fish Oil on Long-Chain Polyunsaturated Fatty Acid n-3 Content in Pig Tissues and Plasma Biochemical Parameters

Analytical Method Assessment for the Determination of DHA and Fatty Acids Present in Unextracted <i>Aurantiochytrium limacinum</i> Biomass

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Effects of a DHA‐rich unextracted microalgae as a dietary supplement on performance, carcass traits and meat fatty acid profile in growing‐finishing pigs

Cited by 30 publications

References 32 publications

Tolerance of Broilers to Dietary Supplementation with High Levels of the DHA-Rich Microalga, Aurantiochytrium Limacinum: Effects on Health and Productivity

Tolerance of Broilers to Dietary Supplementation with High Levels of the DHA-Rich Microalga, Aurantiochytrium Limacinum: Effects on Health and Productivity

Effect of High Dietary Level (8%) of Fish Oil on Long-Chain Polyunsaturated Fatty Acid n-3 Content in Pig Tissues and Plasma Biochemical Parameters

Analytical Method Assessment for the Determination of DHA and Fatty Acids Present in Unextracted &lt;i&gt;Aurantiochytrium limacinum&lt;/i&gt; Biomass

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Analytical Method Assessment for the Determination of DHA and Fatty Acids Present in Unextracted <i>Aurantiochytrium limacinum</i> Biomass