College of Medicine, University of Sumer, Rifai Dhi Qar, Iraq.
Arch Razi Inst. 2022 Dec 31;77(6):2175-2180. doi: 10.22092/ARI.2022.358949.2337. eCollection 2022 Dec.
The high requirement of the broiler to protein in the diet needs more knowledge about protein quality, availability of amino acids, prices or cost, the minimum concentration of anti-nutritional factors (ANFs) and gastrointestinal tract (GIT) health. Azolla is a floating fern with high protein content, vitamins (Vit B12, Vit A, and growth promoters), essential amino acids, and minerals (phosphor, calcium, ferrous and potassium). Azolla can fix nitrogen from the atmosphere through the presence of blue-green algae (Anabaena azollae) in their leaves cavities. This study investigated the physiological and production effect of including different levels of Azolla in broiler feed. Four hundred broiler Ross chicks were randomly divided into four equal groups (n=100). The Control group received a regular diet without any supplementation. Animals in the treatment 1 group (T1) received 15% Azolla in their regular diet formulation, the treatment 2 group (T2) received 30% Azolla in their diet formulation, and the treatment 3 group (T3) received 45% Azolla. The animals had access to food and water. Body weights and food conversion ratio (FCR) were monitored weekly, and blood samples were collected at the end of the experiment for assessment of lipid profile (cholesterol, triglyceride, HDL, LDL and VLDL), blood proteins (total protein and albumin) and activity of liver enzymes (GOT, GPT and ALP). The results showed an increasing body weight significantly (≤0.5) in the T3 group compared with the control along with a significant decrease in FCR at an exact quantity of feed for each group (3 Kg). The results showed no change in physiological parameters (lipid profile, blood protein and liver enzymes activity) except for the levels of GOT, which decreased significantly (≤0.5). In conclusion, the inclusion of Azolla at 15, 30 and 45% in broiler feed has a good effect on body weight and FCR, with no adverse effect on the normal physiology of broilers. Also, supplementation of Azolla can decrease production costs in the broiler industry by more than 30%.
肉鸡对日粮蛋白质的高要求需要更多关于蛋白质质量、氨基酸的可用性、价格或成本、抗营养因子（ANFs）和胃肠道（GIT）健康的最低浓度的知识。满江红是一种高蛋白含量、维生素（B12、A 和生长促进剂）、必需氨基酸和矿物质（磷、钙、铁和钾）的漂浮蕨类植物。满江红可以通过其叶片腔中的蓝藻（鱼腥藻）从大气中固定氮。本研究调查了在肉鸡饲料中添加不同水平的满江红对其生理和生产效果的影响。将 400 只罗斯肉鸡随机分为四组（每组 100 只）。对照组接受常规日粮，不添加任何补充剂。处理 1 组（T1）的动物在常规日粮配方中添加 15%的满江红，处理 2 组（T2）的动物在日粮配方中添加 30%的满江红，处理 3 组（T3）的动物在日粮配方中添加 45%的满江红。动物可以自由进食和饮水。每周监测体重和饲料转化率（FCR），实验结束时采集血液样本，评估血脂谱（胆固醇、甘油三酯、HDL、LDL 和 VLDL）、血液蛋白（总蛋白和白蛋白）和肝脏酶活性（GOT、GPT 和 ALP）。结果表明，T3 组的体重显著增加（≤0.5），与对照组相比，每只鸡的饲料量（3 公斤）的 FCR 显著降低。生理参数（血脂谱、血液蛋白和肝脏酶活性）没有变化，除 GOT 水平显著降低（≤0.5）外。总之，在肉鸡饲料中添加 15%、30%和 45%的满江红对体重和 FCR 有很好的效果，对肉鸡的正常生理没有不良影响。此外，满江红的添加可以使肉鸡生产降低超过 30%的成本。
