[Nutrition and zoohygiene in intermediate and certified chickens fattening]
2002
Papesova, L. | Polasek, L. | Tupy, P. (Biofaktory, Prague (Czech Republic))
The effect of 4 different compound feeds on body weight, feed conversion efficiency, mortality, carcass composition, and meat and skin organoleptic properties of broiler chickens of intermediate type ISA 257 was evaluated. Two feeds (A,B) with high energy value differing in lysine/ME ratio (AB) and one (C) feed with low energy value were tested and compared with one control feed. The experiments were carried out in an experimental station and in 5 farms with low zoohygienic conditions. The best feed conversion efficiency was attained in the groups B and C. There were no differences in body weight and carcass composition. The savour and chewability of the meat as well as the skin colour of experimental animals were better than those of control chickens. The best meat odour was evaluated in the group C. The mortality of chickens in the 5 farms was low as it varied from 1.96 to 3.21 %. The meat quality and technological properties during and after slaughtering were better than those of industrially produced chickens.
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