1. Currently used anti-mould agent varieties
Benzoic acid and sodium benzoate: Benzoic acid and sodium benzoate can non-selectively inhibit the activity of microbial cell respiratory enzymes, impair the metabolism of microorganisms, thereby effectively inhibiting the growth and reproduction of various microorganisms, and the growth and growth of animals. No adverse effects on reproduction. The use of sodium benzoate in feed is generally not more than 0.1%.
Propionic acid and its salts: Propionic acid is a corrosive organic acid, a colorless, transparent liquid, soluble in water. Propionates include sodium propionate, calcium propionate, potassium propionate, and ammonium propionate. Propionic acid and propionate are all acidic mildewproofing agents. They have a broad antibacterial spectrum, and have a certain inhibitory effect on molds, fungi, and yeasts. Their toxicity is very low and they are intermediate products of normal metabolism of animals. All kinds of animals can be used as the most commonly used antifungal agent in feeds.
Fumaric acid and its esters: Fumaric acid esters include dimethyl fumarate, diethyl fumarate and dibutyl fumarate, among which dimethyl fumarate has a good anti-mildew effect. . Fumaric acid and its esters are also acidic mildew-repellent agents, and have a broad antibacterial spectrum, and can improve the taste of feed and improve feed utilization. The general use amount is about 0.2%.
Dehydroacetic acid: Dehydroacetic acid is a highly effective broad-spectrum antibacterial agent, which has a strong inhibitory effect on the growth of bacteria, molds, and yeasts, and has the strongest effect on molds. It has certain antibacterial properties under conditions such as acid and alkali. effect. Dehydroacetic acid is a low-toxic anti-mildew agent that generally has no adverse effects. The amount used is about 0.05%.
Parabens: It has the strongest effect on molds and yeasts. When parabens and starch coexist, their effects will be affected, and care should be taken when using them.
Compound anti-mold agent: refers to the combination of two or more different anti-mould agents, for example, the American-made Ke-ji-ba is a mixture of propionic acid, acetic acid, benzoic acid, sorbic acid and the like. The composite anti-fungal agent has a wide antibacterial spectrum, a wide range of applications, a good anti-mildew effect, a small amount, and convenient use, and is a commonly used anti-mould agent in feeds.
2. Reasonable application of feed fungicide
The correct choice of anti-mold agent: The use of anti-mould agent in feed must ensure that under the premise of effective dose, it can not cause animal acute and chronic poisoning and drug over-limit residual; there should be no adverse effects such as carcinogenic, teratogenic and mutagenic; The fungicide cannot affect the original taste and palatability of the feed. For example, organic acids such as acetic acid and propionic acid are more volatile and easily affect the taste of feeds. Therefore, the use of salts or esters may be better. The ideal anti-mold agent should also have the characteristics of wide antibacterial range, strong anti-mildew ability, easy mixing with feed, economical and practical. Under normal circumstances, propionate and some complex anti-mold agents are the first to consider species, such as Lobo fine salt, Kejiba, Wanxiangbao and other economical and practical products, quality and effect are guaranteed.
According to the actual situation of moisture content and other practical use of anti-mold agents: There are many factors that affect the effectiveness of anti-mold agents, such as the solubility of anti-mold agents, feed pH, moisture content, temperature, feed sugar and salt content, feed pollution Degrees, etc., but mainly based on the season and moisture content to determine whether to use and specific dosage. Therefore, in the dry and cool seasons such as autumn and winter, feed moisture is below 11%, generally do not need to use anti-mold agent; and moisture should be used in more than 12% anti-mold agent, and the higher moisture in the feed and high temperature and humidity season The amount of anti-mold agent should be increased so as to ensure a good anti-mildew effect.
The use of anti-mold agents in combination with antioxidants: The moulding process of feeds is also accompanied by the oxidation of nutrients in the feed. General anti-mould agents should be used together with antioxidants to form a complete anti-mold and anti-oxidation system, so as to effectively ensure Extended storage period.
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