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

J Anim Physiol Anim Nutr (Berl)

Cerzoo Centro di Ricerche per la Zootecnia e l'Ambiente SRL, Piacenza, Italy.

Published: August 2018

AI Article Synopsis

  • Two 125-day experiments were conducted to assess how a microalgae supplement (AURA) rich in docosahexaenoic acid (DHA) impacts pig growth, carcass quality, and fat composition.
  • Pigs (144 in total) were divided by sex and assigned to three groups based on their diet, receiving either no AURA, 0.25% AURA, or 0.50% AURA, while their weight and food intake were monitored regularly.
  • Although the overall performance and carcass traits showed no significant differences across treatment groups, both levels of AURA supplementation led to higher DHA levels in muscle and backfat, and improved the n-6 to n-3 fatty acid ratio.

Article Abstract

Two 125-day experiments of the same design were conducted to evaluate the effects of a heterotrophically grown microalgae (AURA) containing docosahexaenoic acid (DHA) on pig performance, carcass traits and the fatty acid composition of lean and adipose tissue. In each experiment, 144 Hypor pigs were blocked by sex, allocated to three treatment groups, and fed 0, 0.25% or 0.50% AURA in isonutritive, isocaloric diets. Pigs were weighed on days 0, 28, 56, 84 and 112. Feed and water intakes were measured every 28 days. Pigs were slaughtered on day 125. Data from the two studies were analysed as a single data set. Performance and carcass traits did not differ between treatments. Both microalgae treatment levels enriched (p < .05) Longissimus lumborum (LL) and backfat in DHA and improved (p < .05) their ratios of n-6 to n-3 fatty acids.

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http://dx.doi.org/10.1111/jpn.12911DOI Listing

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