Impact of Microbial Protease Enzyme and Dietary Crude Protein Levels on Growth and Nutrients Digestibility in Broilers over 15-28 Days.

In this trial, a 3 × 2 factorial design with different dietary crude protein levels (CP, 17, 19 and 21%) and two levels of exogenous protease (0 and 30,000 IU/kg) was used. A total of 540 two-week old broilers (Ross-308) was randomly allocated to experimental diets over 15-28 days of age. The interaction between dietary protein levels and enzyme supplementation showed that body weight gain was significantly ( < 0.

Protective Effect of Grape () Seed Powder and Zinc-Glycine Complex on Growth Traits and Gut Health of Broilers Following Challenge.

The current study was conducted to evaluate the impact of grape () seed powder and zinc-glycine complex on growth parameters and cecal health of broiler following challenge. A total of 250 day-old male broilers (Hubbard) were distributed into five treatments as follows: I-negative control (basal diet); II-positive control ( challenge); III-group infected + Amprolium; IV-group coccidial infection + organic zinc (OZ) at 50 ppm + grape seed powder (GSP) at 2.5 g/kg; V-coccidial infection + organic zinc (OZ) at 50 ppm + grape seed powder (GSP) at 5.