At present, new corn is listed, and the majority of farmers begin to acquire and store new corn. First, attention should be paid to water content. The moisture content of dry corn is generally below 14%, while newly harvested corn is generally 15%-20% in North China. The Northeast and Inner Mongolia regions are generally 20%-30%. High moisture will destroy the active ingredients such as vitamins in the diet, reduce the level of metabolic energy and crude protein in the diet, and break the balance between nutrients in the diet. Therefore, it is best to solve the problem by purchasing qualified quality corn. After harvesting, it should be spread out in time to prevent accumulation of moisture. Or adjust the nutritional level of the diet according to the influence of water differences, otherwise it will easily cause diarrhea in laying hens. The high egg ratio and low energy are the main reasons for the changes in animal feed intake. New corn I am concerned about the aflatoxin content, whether zearalenone exceeds the standard, every autumn is my time to prevent headache, prevent feed mold, feed or forage more mold during harvesting and storage and mold The contaminated, moldy grain is a kind of imperfect grain. Most farmers think that corn mold changes only occur during corn storage, but in fact, corn mold is divided into storage mold and field mold. About 25% of cereals have been contaminated by mold before and after harvesting. The potential of mold and the presence of mycotoxins have made it difficult to control feed quality. Adding mycotoxin adsorbents is a method, but the key is to attach great importance to the problem of mold contamination. Increase the monitoring intensity to control the moldy particles in the range of 1%. In addition to moldy particles, imperfect granules also include heat-damaged granules, sprouts, lesions, breakage, and insect damage and impurities. Heat damaged grains and broken grains of corn should be paid attention to. The new corn itself has a large respiratory intensity, and the existence of imperfect grains causes the risk of short-term storage of heat and mildew to remain large, and the value of feed is reduced. Monitoring should be strengthened during the acquisition. Because the new corn has a large amount of water, it is that although it is harvested, it is not completely mature. Perhaps this is something that some people don't believe, and I am trying to find a scientific explanation. However, it was not found in the literature. But we know that if the newly harvested wheat is ground into flour immediately, it will taste sticky, and I recently saw that if new soybeans (yellow beans) are made of tofu or other soy products, it will be because there is no Fully mature and affect the yield (yield), and wait until the harvest two months after the harvest. Our chicken farmers have also used the new corn in the past years to reduce the amount of eggs produced, but we are often blamed for the gradual cooling of the weather and the greater moisture of the new corn. But I think it is because the new corn is not fully mature. Therefore, the new corn should be used at least 50 days after harvest. Corn is a post-ripe physiology crop. The content of resistant starch in new corn is the highest, and the content is gradually decreased after storage for a period of time (5-6 weeks). Dried and dried new corn, due to starch denaturation, increased amylose, also affects the digestibility to some extent. Different feed ingredients have different starch content, See the table below. Table of resistant starch and non-resistant starch content in several raw materials Corn 89.7 6.42±0.06 58.75±0.85 Oatmeal 89.8 0.40±0.13 56.90±0.72 Wheat 89.6 0.64±0.11 70.93±0.10 Millet 89.4 0.21±0.20 75.65±1.10 Buckwheat 90.7 0.75±0.06 64.15±0.42 Rice 92.4 0.60±0.31 80.84±0.61 As a new type of dietary fiber, resistant starch is more studied in food. Because it does not digest and does not absorb, it will not increase calories, increase satiety, reduce energy intake, help reduce body weight, promote fat oxidation, and increase Fat is discharged. The above effects are beneficial to the body's weight loss, but have a negative impact on animal production, so symptoms such as soft stools and high feed compensation may occur to varying degrees. It can be gradually mixed with high-quality Chen corn, and the transition period is more than half a month. Look for corn substitutes such as wheat and its by-products, rice, rice bran, palm kernel meal, etc., to reduce the amount of corn used at this stage. Wheat can be used as the main energy feed for poultry. It can also achieve good feeding and economic benefits by partially or completely replacing corn in pig diet. The digestibility of non-starch polysaccharides in wheat is very low, and the corresponding enzyme preparations need to be added to solve and improve; the total biotin content in wheat is higher than that of corn, but the utilization rate is low. The feeding of wheat diet must pay attention to the addition of biotin; wheat The pigment content is only 11% of corn, so it is necessary to consider the appropriate combination of corn protein powder, alfalfa powder, coloring agent and the like. (As a result of high crude fat content, palm kernel meal is usually classified as an energy feed and can replace corn or bran by 1:1. Palm kernel meal does not have harmful effects when added to broiler chicken and adult broiler. Moreover, the feed intake is usually higher than that of the chickens fed the basic diet of corn. However, 78% of the non-starch polysaccharides in palm kernel meal are linear mannans, and the arginine and lysine are not balanced. High, when used in large quantities, it should be used in combination with enzyme preparations such as mannanase. At the same time, the effect of lysine is added, and the effect is more assured. At the same time, palm sputum has an adverse effect on granulation productivity, and the wear of the ring mold is also large. Consider the appropriate amount of substitution. The overall harvest of corn has affected the living environment and food source of rats and mosquitoes. At this time, the number of rats and mosquitoes in the farm is many times or dozens of times more than usual. This may be the breeding herd of many farms at this stage. An important cause of flock instability. Rats, mosquitoes and flies are intermediate hosts or vectors for many diseases, causing or transmitting porcine toxoplasmosis, erythroblastosis, avian white crown disease, and salmonellosis. The occurrence of diseases, invisible infections or the sub-health status of the group will undoubtedly affect the performance of the feed. In addition, the mice have strong reproductive ability and short cycle, and the consumption of feed is also very large, which ultimately affects the feed compensation. Therefore, the improvement measures must be done in a rodent-killing work, once a month, and unified action throughout the game. At the same time, clean up the weeds in the field and do a good job in environmental sanitation, so that the mosquitoes and flies lose their breeding conditions. At the end of autumn and early winter, the temperature fluctuates day and night, the climate is dry, and the humidity is small. The data showed that the diarrhea rate increased by 25%-30% when the temperature difference between day and night in the pig house exceeded 10 °C, and the respiratory tract was stimulated when the temperature difference of the poultry house exceeded 3-5 °C. Therefore, it is necessary to cooperate with the special climatic conditions at this stage to strengthen the adjustment and improvement of the small environment within the house, pay attention to the regulation of temperature and humidity, and at the same time adjust the formula to ensure the nutritional supply and the nutritional needs of livestock and poultry in combination with the changes in energy demand of livestock and poultry when the temperature is lowered. The dynamic balance reduces the occurrence of problems and the impact on livestock and poultry. The gelatinization temperature of corn is 64-72 ° C, and the gelatinization degree within 95 ° C is improved with the increase of temperature. The gelatinization of the starch after gelatinization increased, and the daily weight gain, feed efficiency, and number of lower steaming heads of the animals all improved with the improvement of the gelatinization degree of corn starch. Because of the high water content, the new corn is difficult to add steam during the quenching and tempering of the feed, and the amount of steam absorbed by the material is small, and the degree of gelatinization is not high. At the end of autumn and early winter, the temperature is low, and if the quenching and tempering temperature is too low or too short, the gelatinization effect will be worse, which will directly affect the feeding effect. Why is corn susceptible to mildew and deterioration:
Protein covers a percentage of 55 to 60 in Corn Gluten Meal, other contents are amino acid, various vitamin and micro-element.It's a kind of good feed purified additive for poultry and live stocks growing and disease-resistant. Furthermore, it can also be used to extract natural pigment and various amino acid.usually called corn_coloring element and widely used in industries. With high protein, they are widely used in feeds industry, especialin shrimp breed aquatics , shrimps are grown well with this supplement.It's a kind of good feed purified additive for poultry and livestocks growing and disease-resistant. Furthermore,it can also be used to extract natural pigment and various amino acid.
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Why does new corn affect the egg production rate of the peak hens?