Aim of the research was to test the effect of different housing systems, or-ganic and intensive, on meat quality of a rabbit local breed/population, characterized by low growing and choosen for organic production. Rabbits of the local breed/populations were housed in colony cages, at open air (Group A) with organic system, according to an official organism of certification (states the esclusive use of breeds or local strains). Rabbits of the local breed/populations (Group B) and hybrids (Group C) were housed in colony cages with conventional system. All rabbits were ad libitum fed with the organic diet (alfa-alfa hay and pellet). 90 animals were slaughtered at the same weight (2500 g) but at different ages (local rabbits: 100 days; hybrids: 90 days). At weaning the hybrids showed higher live weight than local breed (Group C=887g vs GroupB=737g vs Group A=664g; P<0,01). At slaughtering age the local breed reared with organic system showed higher live weight than the other groups (Group A=2298g vs Group C=2069g, GroupB=2199g; P<0,01). Local breed reared with organic system showed the better weight gain, higher feed intake and conver-sion (Weight gain: Group A=25,8g. vs Group B=23,2g e Group C=21,5g; Feed in-take: Group A=117,3g vs Group B=76,3g e Group C=76,3g; Feed conversion: Group A=4,6 vs Group B=3,2 e Group C=3,5, P<0,01). The genotype, reared with organic and conventional systems, showed better slaughtering results than hybrids: carcass percentage 60% and 60% vs 58%, (P<0,01), full gastrointestinal tract 19% and 18 % vs 22% (P<0,01), loin 23% and 22% vs 21%, (P<0,01). The meat:bone ratio of hind leg was significantly lower in local rabbits than the others ones (Group A=4 and Group B=3,8 vs Group C=4,7, P<0,01). In conclusion, group reared with organic system showed better productive performance, while the hybrids fed with organic diet showed relevant problems, par-ticularly concerning reduced growing and pathology problems.
Caratteristiche produttive di una popolazione locale di conigli allevati con sistema biologico e convenzionale
PACI, GISELLA;LIPONI, GIAN BATTISTA;FRONTE, BALDASSARE
2004-01-01
Abstract
Aim of the research was to test the effect of different housing systems, or-ganic and intensive, on meat quality of a rabbit local breed/population, characterized by low growing and choosen for organic production. Rabbits of the local breed/populations were housed in colony cages, at open air (Group A) with organic system, according to an official organism of certification (states the esclusive use of breeds or local strains). Rabbits of the local breed/populations (Group B) and hybrids (Group C) were housed in colony cages with conventional system. All rabbits were ad libitum fed with the organic diet (alfa-alfa hay and pellet). 90 animals were slaughtered at the same weight (2500 g) but at different ages (local rabbits: 100 days; hybrids: 90 days). At weaning the hybrids showed higher live weight than local breed (Group C=887g vs GroupB=737g vs Group A=664g; P<0,01). At slaughtering age the local breed reared with organic system showed higher live weight than the other groups (Group A=2298g vs Group C=2069g, GroupB=2199g; P<0,01). Local breed reared with organic system showed the better weight gain, higher feed intake and conver-sion (Weight gain: Group A=25,8g. vs Group B=23,2g e Group C=21,5g; Feed in-take: Group A=117,3g vs Group B=76,3g e Group C=76,3g; Feed conversion: Group A=4,6 vs Group B=3,2 e Group C=3,5, P<0,01). The genotype, reared with organic and conventional systems, showed better slaughtering results than hybrids: carcass percentage 60% and 60% vs 58%, (P<0,01), full gastrointestinal tract 19% and 18 % vs 22% (P<0,01), loin 23% and 22% vs 21%, (P<0,01). The meat:bone ratio of hind leg was significantly lower in local rabbits than the others ones (Group A=4 and Group B=3,8 vs Group C=4,7, P<0,01). In conclusion, group reared with organic system showed better productive performance, while the hybrids fed with organic diet showed relevant problems, par-ticularly concerning reduced growing and pathology problems.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
