Problems to be noted when using enzyme preparations

1. The cost of the enzyme preparation should be included in the formula cost calculation. The phytase produced by bioengineering can degrade the phytate, release the phosphorus, calcium, energy and protein that can be used by the animals, release the phosphorus and calcium elements. The amount of other nutrients increased linearly at the recommended level. When the addition level of phytase exceeds 500 IU/kg, the release of nutrients will continue to increase, but the amount of nutrient release per phytase tends to decrease. Therefore, the addition of phytase at the super recommended level is economically uneconomical. Β-glucanase and pentosanase are effective in degrading β-glucan and pentosan contained in certain feed ingredients in feed. These two water-soluble non-starch polysaccharides are anti-nutritional factors. These anti-nutritional factors can combine a large amount of water, increase the viscosity of the digestive tract fluid, reduce the role of nutrient substrates and endogenous enzymes in the digestive tract, resulting in a decrease in the effective utilization rate of nutrients. The addition of β-glucanase and pentosanase to the corn-soybean-type diet with less anti-nutritional factors has no obvious effect on the improvement of animal performance; it is mainly added to rye, barley and wheat. Among the diets and diets containing more unconventional feed ingredients, the animal performance improvement effect is greater. The same addition amount with the increase of the content of unconventional feed ingredients in the diet, the improvement effect is more obvious; the same diet with the increase of enzyme addition, the improvement effect is more obvious, but the effect of improving the unit enzyme is decreased. Regardless of the feed ingredients used, the excessive addition of beta-glucanase and pentosanase is economically uneconomical. In summary, to prepare a minimum cost diet, the cost of the enzyme preparation should be included in the formulation cost calculation.
2. Factors that affect the activity of the enzyme preparation should be considered. The enzyme preparation itself is a type of protein, and any factor that affects the activity of the protein affects the activity of the enzyme preparation. The activity of the enzyme preparation increases with an increase in temperature, but when the temperature is high to some extent, the enzyme preparation is denatured and loses activity. The optimum temperature for the activity of the general enzyme preparation is 30 ° C to 45 ° C. When the temperature exceeds 60 ° C, the enzyme preparation is denatured and loses activity. The pH value also has an effect on the activity of the enzyme preparation. Under other conditions, the enzyme preparation has the highest activity in a certain pH range, and the optimum pH value of the activity of the general enzyme preparation is close to 76.5-8. Monoiodoacetic acid, ferricyanide and heavy metal ions can bind or react with the essential groups of the enzyme preparation, thereby deactivating the enzyme preparation. Therefore, in the feed production process, we must pay attention to the effects of temperature, pH, heavy metal ion concentration and other factors on the activity of the enzyme preparation, in order to achieve the best use of the enzyme preparation.
3. When purchasing enzyme preparations, the effective content and price should be considered. There are many types of enzyme preparations on the market. When purchasing enzyme preparations, users must choose enzyme preparations that can guarantee the effective content and reasonable price, and should not only consider the price is cheap, but Does not consider the effective content of the product.
4. When using the enzyme preparation, the feeding object should be considered. The effect of using the enzyme preparation in the single stomach animal is obvious, and the effect of using the enzyme preparation in the herbivore animal is not obvious. Therefore, the addition of an enzyme preparation may not be considered in the feed of a herbivore.
5. Attention should be paid to the quality testing of enzyme preparations Now, many feed testing departments can detect the effective content of enzyme preparations. When purchasing the enzyme preparation, the user can send the sample to the relevant department for testing to ensure the quality of the purchased enzyme preparation is reliable.

Glass Shelf

Are glass shelves safe?

Tempered glass shelves are resilient, durable, and 100% safe and secure.

What is tempered glass shelf?

Tempered glass is stronger than standard glass. This product is used most often for shelves, some fireplaces and table tops. Tempered glass breaks into many small pieces when broken and usually never cracks.

Where can use glass shelf?

Tempered glass can be used for shelves in display cases or as shelving on wall systems. Glass shelves are a great accent for the kitchen, bedroom, bathroom.

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