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试验用同一批的膨化与未膨化的硬颗粒饲料饲喂湘云鲫 ,试验结果表明 :饲料膨化后 ,试验组ⅠB、ⅡB、ⅢB湘云鲫的瞬时生长率下降了 1 .0 3%～ 1 4.34% ,饲料系数增加了 1 0 .78%～ 2 5 .41 % ;试验组ⅣB、ⅤB湘云鲫的瞬时生长率增加了 1 .46%～ 3.67% ,饲料系数下降了 3.32 %～ 5 .45 %。而随着豆粕 (膨化 )比例的降低 ,湘云鲫的瞬时生长率呈现先上升后下降的趋势 ,饲料系数呈现先下降后上升的趋势 ,在豆粕含量为 2 4 % (膨化豆粕 2 5 % )时 ,湘云鲫的瞬时生长率达到最高 ,饲料系数最低。总之 ,湘云鲫对膨化饲料的利用并没有显示出优势性。
The same batch of puffed and non-puffing hard pellets were fed on the crucian carp. The experimental results showed that the instantaneous growth rate of ⅠB, ⅡB and ⅢB in the experimental group decreased by 1.3% ~ 1 4.34%, feed coefficient increased by 10.78% ~ 25.41%. The instantaneous growth rate of IVB and ⅤB in the experimental group increased by 1.46% -3.67% and the feed coefficient decreased by 3.32% -5. 45%. With the decrease of soybean meal (puffing) ratio, the instantaneous growth rate of Carassius auratus first increased and then decreased, and the feed coefficient showed the trend of first decreasing and then increasing. When soybean meal content was 24% (expanded soybean meal 25%), , The instantaneous growth rate of Carassius auratus reached the highest, with the lowest feed coefficient. In short, the use of extruded crucian carp Yunfu did not show the advantages.