THE EFFECT OF ENZYME SUPPLEMENTATION TO T HE TRITICALE-RYE RATIONS FOR YOUNG GEESE

The experiment was carried out on 400 young White Italian geese. One-d ay old goslings were divided into four treatments, each with 2 x 25 ma le and 25 female and kept on the litter in environmental temperature 2 6 to 16 degrees C. In the first 3 weeks of life goslings were fed semi ad libitum with starter mixture (about 19% crude protein and 10.8-10. 2 MJ EM/kg), in 22-56 days with grower mixture (16.8% CP and about 10. 6 MJ EM/kg). Birds from control group were fed with a standard mixture contained maize (21/10%) and wheat (40/31%). Mixture for other groups contained 20% triticale and 20% rye. Mixtures served to group III and IV preparation Roxazyme G1 with beta-glucanase, cellulase, xylanase, pectinase and amylase activity. For all geese the same amounts of gree n grass were administered. Feeding of young geese with 40% of tritical e and rye (II) in the first 3 weeks as well as during 8 weeks of life decreased the body weight by about 5% in comparison to control animals (I). The effect of enzymatic preparation was different and depend on age. Supplementation of the rations with enzymes increased the body we ight of geese by 15% (200 ppm, III) or by 13% (150 ppm, IV) in relatio n to negative group II; in 8 weeks of age the differences were as 5.7 or 4.1% (P < 0.05), respectively. The feed conversion in both examined life periods was in group II by about 2.0-4.4% lower than in control (I). Higher Roxazyme dose (200 ppm) increased this productive result b y 3.3% as compared to group II. Triticale-rye diet increased the carca ss quality, however the abdominal fat amount in body was greater than in control.