1. Protein feed is forbidden to feed young chickens
When brooding chickens, some farmers will feed too much protein feed such as fish meal and bean cakes too early. This will not make the young chickens strong, but also easily cause indigestion. In severe cases, they may die due to protein poisoning.
The scientific approach is: for young chickens aged 1 to 4 days, protein feeds such as fish meal and soybean cakes should not be added to the diet; for young chickens aged 5-10 days, protein feeds in the diet can only account for less than 10%; 11-20 days old should not exceed 15%; 21-30 days old should not exceed 25%. At the same time, it is necessary to feed more easily digestible feeds such as ground corn, millet, chopped green cabbage leaves, and it is best to add 1% Chinese herb Atractylodes in the diet, which is not only beneficial to the digestion and absorption of young chickens, but also beneficial Young chickens grow and gain weight.
2. Are you raising chickens with new corn?
When new corn is first used, problems such as diarrhea of livestock and poultry, increased feed intake, decreased egg production or growth stagnation, etc. are often encountered. This is mainly due to the large amount of resistant starch, high water content, low energy, and prone to mildew and deterioration of new corn.
Now, some information in this area has been collected, and the summary is compiled as follows:
(1) The problem of resistant starch in new corn
Maize is a post-maturing physiological crop. The resistant starch content in new corn is the highest, and the content gradually decreases after storage for a period of time (5-6 weeks). Direct drying of new corn has an increase in amylose due to starch modification, which also affects the digestibility to a certain extent.
As a new type of dietary fiber, resistant starch has been studied in foods. Because it is indigestible and not absorbed, it will not increase calories to the human body. It can increase satiety, reduce energy intake, and help reduce weight and promote fat Oxidize and increase fat excretion. The above effects are beneficial to the human body to reduce weight, but have a negative impact on animal production. Therefore, symptoms such as soft stools and high feed remuneration may appear to varying degrees.
(2) The problem of direct feeding of new corn to chickens
In new corn, the head maturity of the corn ear is not enough and the maturity period is lacking. Therefore, the amount of resistant starch is large. Resistant starch is not digested in the small intestine, but is easily used by E. coli in the large intestine, producing toxins and causing diarrhea.
It should be noted that during the new corn market season, weather factors and seasonal diseases can also easily lead to diarrhea.
②High water content, low energy
New corn has a high moisture content after being dried, most of which are at 17%, and there is very little dry corn within 13%. The moisture content is about 17%. After being processed into full-price materials, it feels not wet, but the nutrients are not balanced. With the loss of water, the vitamins, fat, energy, protein and other components in the corn will be lost, resulting in a decrease in feed efficiency and an increase in feed-to-meat ratio.
New corn has excessive moisture and low energy, which will increase the feed intake of the flock (however, the laying rate of the laying hens has decreased because the digestive energy is directly reduced), the drinking water is reduced, and the feed spoilage cycle is shortened.
It should be noted that some farmers think that the new corn has low energy, so when preparing the feed, they directly add fuel to make up for it. Some people in the industry have responded that doing so will increase the diarrhea of livestock and poultry.
Maize mold is divided into storage mold and field mold. Approximately 25% of the grains have been contaminated by molds before and after harvest. New corn has high moisture and high breathing strength. The presence of mold causes a high risk of fever and mildew in short-term storage, and it is more likely to cause mildew after processing and crushing.
Mycotoxin, a derivative of mold, can damage the body's immune system, such as chicken's thymus, spleen, bursa of fabric and bone marrow, liver, etc., greatly reducing the disease resistance of chickens and increasing chicken infections with Newcastle disease, avian influenza, The incidence of spreading and other viral diseases will bring serious economic losses.
(3) Precautions for the use of new corn
In view of the situation of new corn, it is necessary to pay attention to the adjustment of the formula. The principle is that the dry matter nutrition of the feed remains unchanged.
①Strengthen the quality control of new corn, and appropriately use compound enzyme preparations with reasonable proportions and strong targets.
②Appropriate aging, and the time should be more than one month.
③It can be gradually mixed with high-quality old corn for transition, and the transition period is more than half a month.
④ Seek alternative corn products such as wheat and its by-products, rice, rice bran, palm kernel meal, etc., so as to reduce the amount of corn at this stage.
3.Feeding chickens with earthworms must pay attention to the method
（1）Live earthworms cannot be fed directly to chickens.
Earthworms are the intermediate hosts and spreaders of a variety of parasites. They can transmit wedge-shaped metamorphosis tapeworms, podocarpus nematodes, ring capillaries and heterotic nematodes, etc., which will degrade chicken physique and reduce productivity. Therefore, live earthworms cannot be directly fed by live earthworms. Chickens. Use earthworm resources to feed chickens scientifically. After the collected fresh earthworms are rinsed with clean water, they are heated and boiled for 5-7 minutes to effectively kill the internal and external parasites of the earthworms.
Generally, the washed and boiled earthworms should be cut into small pieces and added to the feed to feed the chickens. The laying hens are fed 15-20g each day or 12%-15% of the added feed, and fed after subtracting 10-15g of the diet, the egg production of the chickens can be increased by 7.4% and the economic benefit can be increased by 9.2%. Other chickens can be fed according to weight gain and loss, which is also effective for growth and weight gain. For earthworms that can't finish eating, they should be dried and stored, and the ingredients should be properly matched and fed, which can reduce the cost of feed.
（2）Get rid of parasites regularly.
All chickens that have been fed with earthworms or chickens that have never been fed with earthworms should be given levamisole on a regular basis, calculated at 25 mg per kilogram of body weight, and given to the chicken with the mixture. Under normal circumstances, worms can be dewormed 3 to 4 times a year. Ferment manure regularly. In order to prevent the spread of parasitic diseases, disinfectant or 1% to 2% aqueous caustic soda solution should be used to thoroughly disinfect chicken houses and venues. At the same time, chicken manure and cleaning dirt should be piled up and fermented to kill the larvae and eggs of parasites. If conditions permit, you can also feed the chicken vitamin C, antibiotics, and drink glucose water to enhance the chicken's resistance to diseases.
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