Utilization of complete feed based on fermented rice straw for Australian commercial cross steer on carcass and meat quality

Abstract

The objectives of this research was to study the utilization of complete feed (CF) based on fermented rice straw (FRS) for Australian Commercial Cross (ACC) steer on the carcass percentage and physical-chemical quality of meat. Thirty six steer of 1.5-2 year of age (310-330 kg)were divided into two groups (treatment vs control) 3 flocks consisting of 6 head/flock were used. In treatment group to the experimental animals were offered as much as 3% BW of CF (consisting concentrate 75% and FRS 25%), while in control group animal received 2% BW of concentrate and FRS ad libitum. Complete feed was formulated to cover the nutrient requirement of beef cattle as recommended by NRC (1984). The drinking water was given ad libitum. Prior to feeding treatment (3 month) the animals were adapted on the experimental during for 10 days. Feed was given twice a day
(08.00 a.m. and 15.00 p.m.). Data of carcass and meat quality (colour, WHC, cooking loss and tenderness, pH, protein, ashes, and cholesterol) were taken from 3 head per flock, slaughtered at the end of the treatment. Meat samples (500 g) were taken from Longisimus dorsi (LD) muscle. All collected data, were analyzed by T-test. The effect of CF on carcass percentage was better than KF. For all of the variables, the physical-chemical quality of meat showed that there is no significant difference between groups in longisimus dorsi muscles (LD) except for WHC (50.82 vs 38.28;P<0.05). It could be concluded that CF based on FRS indicated good result than KF on ACC steer performance raised for 3 month.