Effect of the housing system (free-range vs. open air cages) on growth performance, carcass and meat quality and antioxidant capacity of rabbits

Meat Sci. 2018 Nov:145:137-143. doi: 10.1016/j.meatsci.2018.06.017. Epub 2018 Jun 18.

Abstract

Growth performances and meat quality of free-range or cage raised rabbits were compared in 36 male animals. Rabbits were raised in free-range areas (2000 cm2/head) or in open-air cages (800 cm2/head) from weaning to 99 days old. Daily weight gain and final live weight were higher (P < 0.05) for the rabbits raised in cages which presented a more favourable feed conversion ratio (P < 0.05) than in the free-range group. The average feed intake, liver and empty gastro-intestinal tract weights were higher (P < 0.05) in the free-range group, while the interscapular fat percentage was higher (P < 0.05) in the caged rabbits. Loins of free-range rabbits had higher amount of PUFA n-6 in neutral lipids (P < 0.05) whereas their polar lipids were richer in PUFA n-6 and n-3 than in those of the cage group. Muscular fat of free-raised rabbits was found to be less susceptible to be oxidized, having a higher antioxidant capacity than the caged group.

Keywords: Antioxidant capacity; Free-range; Meat quality; Open air cages; Rabbits.

Publication types

  • Comparative Study

MeSH terms

  • Adipose Tissue / metabolism
  • Animal Feed
  • Animal Husbandry / methods*
  • Animal Welfare*
  • Animals
  • Antioxidants*
  • Body Weight*
  • Energy Intake
  • Energy Metabolism
  • Fatty Acids, Omega-3 / metabolism
  • Fatty Acids, Omega-6 / metabolism
  • Gastrointestinal Tract
  • Housing, Animal*
  • Humans
  • Liver
  • Male
  • Meat / analysis*
  • Muscle, Skeletal / metabolism
  • Oxidation-Reduction
  • Rabbits

Substances

  • Antioxidants
  • Fatty Acids, Omega-3
  • Fatty Acids, Omega-6