س: ما هي مؤشرات التقييم لمستحضرات الإنزيم في المختبر؟

A: As a live bacterial preparation, probiotics need to have good storage stability, temperature resistance, gastric acid bile salt resistance, etc. in order to reach…

In the broiler feed, phytase increased from 0.5 to 8 FTU/g, and the weight gain and feed conversion rate of broilers gradually increased with the…

Select the phytase variety with the best phosphorus release rate; try to use feed ingredients with rich phosphorus content; use phytase in excess dose (6-12…

Q:What are the differences in the mechanisms of action of different probiotics? A: There are differences in bacteriological properties. For example, for the utilization of oxygen, there are aerobic bacteria such as Bacillus, facultative anaerobic bacteria such as lactobacilli, and strict anaerobic bacteria such as Clostridium butyricum. There are also whether spores are produced, such as hay, lichen, coagulation and Clostridium butyricum can form spores, but lactic acid bacteria cannot form spores. Furthermore, there are differences in their resistance to stress. In addition, there are certain differences in the targets of different probiotics in the intestine. Subtilis and lichen act on the front part of the small intestine, coagulant and lactic acid bacteria act on the middle and back part of the small intestine, and Clostridium butyricum acts on the back part of the small intestine.

Q: What are the contents of enzymatic properties?  Which characteristics are reflected respectively? A: Enzyme is a kind of protein, which is sensitive to temperature, PH and endogenous protease.The action site of enzyme in our feed is in the stomach and intestinal tract, so the enzyme needs to be resistant to the high temperature of feed processing in order to play an effective roleGranules, resistant to gastric acid, resistant to endogenous proteases. Usually, the key evaluation indicators in the experiment include heat resistance, acid resistance, PH adaptability, temperature adaptability, endogenous digestive enzyme resistance and so on.

Q:For feed Enzyme, is the higher the enzyme activity, the better? A：Not necessarily, it depends on the type of enzyme. Endogenous digestive enzymes such as amylase and protease have an upper limit. When excessive…