(1) Temperature, Insect In addition to biting and contaminating feed, insects can also cause temperature and humidity to increase. Insects are very sensitive to changes in temperature, when the temperature is 15. 5 °C or less, the reproduction is very slow, or even stop; when the temperature is up to 41 °C or more, it is not easy to exist, the most suitable temperature for insect reproduction is about 29 °C, The life cycle of insects is about 30 days, and breeding is very fast. When pests are generally found, they can be disinfected by fumigation.
(2) With the increase of humidity and humidity, the rapid growth of mold, so that the temperature and humidity in the warehouse are increased, along with the appearance of musty and sour, and humidity is controlled to 65% or less.
(3) Light feed or nutrients often mutate due to light or accelerate changes due to light, which catalyzes feed changes. Light causes oxidation of fat, destroys fat-soluble vitamins, and proteins denature due to light.
(4) Oxygen The oxygen in the atmosphere can oxidize fat, affect the biological value of proteins and destroy certain vitamins, not only affect nutrients, but also reduce palatability.
(5) Microbial molds, bacteria, and yeasts may rapidly multiply due to environmental changes, reduce the availability of raw materials, and may also produce toxins that cause poisoning.
(6) The properties of raw materials such as fineness, pH value, integrity, evenness, moisture content, maturity, etc. Usually the raw water content below 13% can inhibit the growth of most microorganisms, and less than 10% can reduce insects. The production.
(7) Warehousing equipment, management thermal insulation effects and storage period all affect the quality of feed ingredients during storage. The management includes pest control, ventilation, vacancy, first-in first-out and other work.
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