The production of MLM was favored by using corn flour or maize starch, but adversely affected by higher level of yeast meal.
In the first optimization step the effects of corn flour, maize starch, soybean meal, yeast meal, K2HPO4, KNO3, soybean oil, NaCl and CaCO3 on MLM production were evaluated by using a fractional factorial design.
There are a lot of excellent microbe and yeast meals eventually left in them.
With yeast supplementation, meal criteria (minimum intermeal interval) were shorter (20.0 vs. 25.8 min), translating to cows tending to have more meals (9.0 vs. 7.8 meals/d), which tended to be smaller in size (3.4 vs. 3.8 kg/meal).
A 23 factorial central composite experimental design was used to study the combined effect of the nutritional constituents like soybean meal, yeast extract and wheat bran.
In this study, we formulated five diets, namely, P1, P2, P3, P4 and P5, with Chlorella sp. powder, Spirulina platensis powder, yeast powder, soybean meal and corn gluten, respectively, as major protein sources.
Nitrogen sources including casein, yeast extract, soybean meal, and peptone significantly influenced the enzyme production.
These flies were kindly provided by Dr. M.T. Kimura and maintained on standard fly media (molasses, corn meal, yeast extract, and agar) in a 25° incubator.
Fly cultures were kept at 25°C with a 12-h light-dark cycle on corn meal, yeast, sucrose, and agar food.
For each line, five males and ten females were maintained at 20°C and ~75% humidity on standard Drosophila medium (containing molasses, corn meal, yeast, agar, and antimicrobial agents).
Flies 3 dpe were grown in corn meal yeast fly food supplemented with 200 μl of 6-mg/ml BrdU in PBS for 2 days before infecting with E. coli.
