concept, feed conversion ratio in chicken enzyme and digestibility and animal farm feed quality

poultry feed performance growth production meat egg farm conversion layer hens enzymes digestibility premixes additives protein nutrient nutrition gut health healthy concept conceptual designs products brochure intestine intestinal chicken broiler amino acid acidifiers pellet crumble animal phytase cellulose exogenous swine polysaccharide xylanase supplementation hemicellulose phytic diet glucanase mannanase structure enzyme quality catalog flyer poster amylase protease use ratio