A study was conducted on broiler birds for 42 days to determine the effect of feeding azolla along with direct-fed microbial (DFM) on growth performance, nutrient utilization, biochemical parameters and carcass characteristics. A total of 360-day-old male broiler chicks were divided into 3 groups and 12 replicates with 10 chicks per replicate, according to complete randomized block design. One group was fed a diet containing 2.5% azolla (A) and another was fed a diet containing 2.5% azolla, with direct-fed microbial (A + DFM), viz. L. plantarum and L. rhamnosus, at the concentration of 13.4 × 10⁸ and 1.52 × 10⁸ CFU per mL, respectively, mixed in the daily quota of feed. The control group (CON) was fed a basal diet without azolla and DFM. Azolla fed alone and with DFM did not affect growth performance and feed conversion ratio (FCR) of birds during pre-starter and starter phase; however, significantly (P < 0.05) lower weight gain and higher FCR were observed during finisher period, resulting in an impaired overall FCR. Decreased (P < 0.05) plasma cholesterol and increased (P < 0.05) tibial calcium content were observed in birds fed azolla with DFM. The highest value (P < 0.05) of carcass characteristics like gizzard weight, breast muscle yield and lower meat pH were recorded in the birds fed azolla in combination with DFM, followed by birds fed azolla alone. In conclusion, azolla feeding at 2.5% level shows positive effect on breast muscle yield and gizzard weight of broiler which can be enhanced upon adding DFM to azolla-based diet.

在肉鸡上进行了为期42天的研究，以确定饲喂洋紫苏和直接饲喂微生物（DFM）对生长性能，养分利用，生化参数和car体特性的影响。根据完全随机区组设计，将总共360天大的雄性肉仔鸡分为3组，每组12个重复，每个重复10个小鸡。一组饲喂含2.5％偶氮唑的饲料（A），另一组饲喂含2.5％偶氮唑的饲料，其中饲喂微生物（A + DFM）。浓度为13.4×10 ⁸和1.52×10 ^8的植物乳杆菌和鼠李糖乳杆菌 每毫升CFU分别混合在每日的饲料配额中。对照组（CON）饲喂无偶氮和DFM的基础饮食。单独和配合DFM饲喂的满江红在启动前和启动阶段均不会影响家禽的生长性能和饲料转化率（FCR）；但是， 在育肥期期间观察到显着（P <0.05）的增重降低和FCR升高，导致整体FCR受损。降低（P  <0.05）血浆胆固醇和增加（P 在进料与萍DFM鸟类观察<0.05）的胫骨中钙含量。最高值（P 在饲喂满天星配合DFM的家禽中，记录到体重量，胸肌产量和较低的肉pH值的<0.05）followed体特征，然后是单独满满的洋ll。总之，以2.5％的水平饲喂偶氮菌会对肉鸡的胸肌产量和yield重量产生积极影响，而在基于偶氮菌的日粮中添加DFM可以增强这种效果。