Precautions for the use of new corn
Release time:
Nov 20,2019
Autumn is the harvest season, and it is also the time when new corn is ripe. Many laying hen farmers and friends will choose new corn to feed the chickens. They don't know that the moisture content of corn is high, and the moisture content is in27~32Between, and after the ripening period, so how do farmers correctly understand and use the new corn?
First of all, the majority of laying hens farmers first learn about the impact of new corn on laying hens
1Reduced energy
Replacing dry corn with wet corn will greatly reduce the energy of the formula. Laying hens are animals that can eat for energy. Although energy needs can be met by increasing feed intake, it will inevitably cause waste of other nutrients. Therefore, improper use, wet corn not only can not reduce feed costs, and may even affect the normal production and development of animals due to nutritional imbalance.
2Increase feed intake
Low-energy wet corn contains a large amount of crystalline glucose and indigestible fiber, resulting in a reduced ability of the animal's digestive system to accommodate feed (chicken crop).
3High content of resistant starch in wet corn
indigestible starch.It cannot be enzymatically hydrolyzed and absorbed in the small intestine of animals
Resistant starch exists in some natural foods, such as potatoes, bananas, rice, etc., all contain resistant starch, especially in wet corn starch containing resistant starch up60%
Common problems and hazards in the use of new corn
1: Diarrhea
The moisture content of new corn is high after harvest (27-32%), if corn according to normal moisture (14%The following) when the use ratio is added to the compound feed for laying hens, it will easily cause diarrhea caused by indigestion of laying hens due to the relatively high proportion of crude protein in the compound feed. In addition, corn contains a large amount of anti-starch, which needs to be harvested5~6The ripening period will gradually decrease after weeks. If it is used too early, the content of anti-starch in the feed is too high and cannot be absorbed and utilized by laying hens, which will also cause diarrhea in laying hens.
2: Reduced feed conversion rate
The use of corn with high moisture content, no matter what the reason, as long as diarrhea occurs, will first reduce the feed conversion rate, resulting in poor expression of the production performance of laying hens.
3: Mycotoxin Poisoning
4: Decreased feed intake
After the new corn is contaminated by a large number of molds, the palatability becomes very poor. Some animals with sensitive sense of smell and taste will have a sharp decline in feed intake or even refuse to feed, and the daily feed intake is insufficient, resulting in immunity.
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