INFLUENCE OF THE ORGANIC REARING ON THE MEAT PRODUCTION OF THE MALE CALVES OF THE BULGARIAN BROWN CATTLE

Y. Gorinov, K. Lidji, P. Marinova, V. Vassileva, T. Popova

Abstract: One way dispersion analysis was used in a study on the influence of the organic rearing of the Bulgarian Brown male calves. Initial age of the experimental groups was 6-8 months, which were split by the analogous method according their age and live weight. The animals were reared free-stall and fat at lib with whole ration mixture. The concentrate forage daily was 40% of the ration weight at the traditional rearing and 1 kg for the organically reared groups. The assessment of the carcasses was performed in certified slaughter houses on their conformation and fatness according the (S)EUROP classification system. The organic rearing of the Bulgarian Brown male calves was a considerable factor with high significance (Р<0.001) on the traits final age and average daily gain during the whole experimental period. The organically reared calves reached their slaughter weight 88.57 days later compared to the conventional analogous (Р<0.001). During the whole rearing period the organic analogs had lower average daily gain and the linear contrasts were highly significant (Р<0.001). A significant decrease with 2.1% was found for the organic reared calves of their slaughter output (Р<0.05), a lower fat score with 0.86 points of the scale and with 2.65 kg less fat in the carcass (Р<0.01).

Keywords: Bulgarian brown cattle; meat production; organic rearing

Date published: 2018-03-09