اثر جيره هاي حاوي آزولاي (Azolla filiculoides) سيلو شده با تفاله خشك چغندرقندبر عملكرد پرواري گوساله هاي نر بومي گيلا

Effect of diets containing Azolla {Azolla filiculoides) Sugar beet pulp silage on the fattening performance of Guilani native male calves

Azolla was ensiled with sugar beet pulp (SBP) in a ratio of 75:25 Azolla: SBP (DM basis). In a completely randomized design, with 4 dietary treatments and 6 replicate, 24 native male calves with average age of about 10 months and initial live weight of 113.6 ± 3.2 kg, were fed with the experimental diets containing 0, 15, 30 and 45 percent silage respectively. At the end of the experiment all calves were slaughtered for carcass measurements. The average dry mater intakes were 5.42, 5.32, 5.28 and 4.81 kg/day and feed conversion ratio 7.55, 7.33, 7.27 and 6.81 (kg feed/kg live weight) for diets 1, 2, 3 and 4 respectively. The difference between these figures was significant (P<0.05). The average daily gains were 717, 725, 727 and 760 g for the animals received diets 1, 2, 3 and 4 respectively. There was no significant difference between these gains. No significant difference was detected between the carcass characteristic measurements, exept abdominal fat. It was concluded that Azolla-beet pulp silage may be used in calves finishing diets up to 45%.