Peter Kappel Theil

Supplementation of sows with L-Arginine during gestating and lactation affects muscle traits of offspring related with postnatal growth and meat quality: From conception to consumption

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This study investigated the effect of dietary inclusion of 25 g/day of L -Arginine (n = 7) or iso‑nitrogenous amounts of alanine (n = 6) from d 30 of gestation to d 28 of lactation of sows on performance, muscle traits and meat quality in offspring. From each litter, heaviest and smallest littermate of both sexes were reared from d 28 and slaughtered at d 140 in accordance with a 2 3 factorial design. A response to L -Arginine were obtained on small females where L -Arginine increased birth weight, however this effect disappeared at weaning. L -Arginine increased daily gain by 7% and increased the cross-sectional area of the M. semitendinosus in small females by 14%, suggesting an increased lean ratio. Mechanistic studies showed firstly, that small female littermates had increased number of muscle fibres (myogenesis) after L -Arginine treatment (11%) and secondly increased total DNA (12%) as a consequence of satellite cell proliferation. Traits describing tenderness seem to be affected by L -Arginine but further studies are needed.

Original languageEnglish
JournalMeat Science
Volume152
Pages (from-to)58-64
Number of pages7
ISSN0309-1740
DOIs
Publication statusPublished - 2019

    Research areas

  • ARGININE SUPPLEMENTATION, CELL-GROWTH, DIETARY-PROTEIN, FIBER CHARACTERISTICS, IUGR, LONGISSIMUS-DORSI, LOW-BIRTH-WEIGHT, Metabolism, Muscle fibre number, Muscle histo-chemistry, NUTRITION, PERFORMANCE, PIGS, Performance of pigs, SKELETAL-MUSCLE

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