Effect of environmental thermal fluctuations on innate immune responses in pacu Piaractus mesopotamicus juveniles

Immune functions in teleosts are straightly influenced by environmental temperature

LĂ­via Maria Gruli Barbosa; Gilberto Moraes; Fernanda de Freitas Anibal; Cleni Mara Marzocchi-Machado

2020

Scholarcy highlights

  • Immune functions in teleosts are straightly influenced by environmental temperature
  • Innate immune defenses of Piaractus mesopotamicus were evaluated in fish fed with diets supplemented with vitamin E for 45 days
  • The most effects were observed at the 24th hour, in which the level of plasma cortisol increased independently of dietary supplement of vitamin E and a lessening of MNL and a raise of GL counting were observed in fish fed with supplemented diets
  • The lowest SL variation was observed in fish fed with the maximum level of vitamin E, but the dietary vitamin E decreased the HAC
  • Dietary vitamin E used in the present experimental conditions did not present remarkable effects on the immune frame of pacu to cope with environmental thermal fluctuations but other investigations concerning the vitamin half-life and its association with unsaturated dietary lipids seem to be fundamental

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