Apparent digestibility of selected feedstuffs in diets for hybrid striped bass (Morone saxatilis ♀ X Morone chrysops ♂)
Apparent digestibility of selected feedstuffs in diets for hybrid striped bass (Morone saxatilis ♀ X Morone chrysops ♂)
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杂交条纹鲈日粮中所选饲料的表观消化率（Morone saxatilis ♀ X Morone chrysops ♂）
DOI：
10.1016/0044-8486(95)01071-8
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发表时间：
1995
期刊：
影响因子：
4.5
通讯作者：
R. Reigh
中科院分区：
文献类型：
--
作者：
Jj Sullivan;R. Reigh
杂交条纹鲈鱼喂养参考饮食或九个测试饮食之一，含有选定的蛋白质和能量补充剂：鲱鱼鱼粉，肉骨粉，血粉，豆粕，棉籽粉，玉米粒，小麦粉，次粉，米糠。试验饲料含有70%的参考饲料混合物和30%的试验成分。所有饲料均含有1%的氧化铬指示剂。从麻醉的鱼手动剥离粪便样品以防止与水接触。测定参考和试验饮食中干物质、粗蛋白和能量的表观消化率系数，并根据试验饮食相对于参考饮食的消化率差异计算试验成分的消化率系数。所有测试成分的表观粗蛋白质消化率都很高（71-93%）。动物源成分（鱼粉和肉骨粉; 80-95%）的表观能量消化率（AED）显著高于植物源成分（豆粕、玉米、小麦粉、次粉和米糠; 41-73%），只有一个例外-肉骨粉和棉籽粕的AED没有差异。表观干物质消化率（27-84%）在植物和动物来源的成分之间差异显着，似乎与成分的纤维和淀粉含量呈负相关。结果表明，杂交条纹鲈对高蛋白、高脂肪饲料的利用优于高碳水化合物、高纤维饲料。
Hybrid striped bass were fed a reference diet or one of nine test diets containing selected protein and energy supplements: menhaden fish meal, meat and bone meal, blood meal, soybean meal, cottonseed meal, corn grain, wheat flour, wheat middlings, and rice bran. Test diets contained 70% reference diet mixture and 30% test ingredient. All diets contained 1 % chromic oxide indicator. Fecal samples were manually stripped from anaesthetized fish to prevent contact with water. Apparent digestibility coefficients for dry matter, crude protein, and energy in the reference and test diets were determined, and digestibility coefficients for the test ingredients were calculated based on differences in the digestibility of test diets relative to the reference diet. Apparent crude protein digestibility was high (71–93%) for all ingredients tested. Apparent energy digestibility (AED) was significantly higher for ingredients of animal origin (fish meal and meat and bone meal; 80–95%) than for those of plant origin (soybean meal, corn, wheat flour, wheat middlings, and rice bran; 41–73%) with one exception—AED of meat and bone meal and cottonseed meal did not differ. Apparent dry matter digestibility (27–84%) varied significantly among ingredients of both plant and animal origin and appeared to be negatively related to fiber and starch content of the ingredient. Results indicated that hybrid striped bass utilized high-protein and high-lipid feedstuffs better than high-carbohydrate or high-fiber feedstuffs.