First, the farm biological environment changes
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.
Second, the breeding environment changes
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.
Third, feed processing technology
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.
Liao Na and Tan Hequn (2007) on the starch gelatinization degree of fine corn flour showed that the finer the particle size, the lower the gelatinization temperature of the particles and the lower the temperature at which the gelatinization ends. As the particle size decreases, the surface of corn flour tends to be rough, the morphology of the particles changes, the specific surface area increases, and the degree of gelatinization increases to some extent. Therefore, in terms of processing technology, measures such as reducing the particle size of corn, increasing the temperature of quenching and tempering, and prolonging the time of quenching and tempering will contribute to the gelatinization of starch, improve its digestion utilization rate, and reduce adverse effects.
Feed additive is a small amount or a small amount of material added in the process of feed production, processing and use. Feed additive is a Raw Material for modern feed industry must use for strengthening basic feed nutritional value, improve animal production performance, guarantee the animal health, save feed costs, improve quality of animal products and other aspects have obvious effect.
Feed Additives are divided into Microbial Feed Additives and Chinese Herbal Feed Additives. Among them, the microbial feed additive is a kind of microbial product that replaces or balances one or more bacterial strains in the animal ecosystem. In a narrow sense, it is a kind of microbial product that can stimulate the growth of beneficial bacteria and resist the growth of harmful bacteria. Microbial feed Additives containing a large amount of beneficial bacteria (active lactobacillus, bifidobacterium, bacillus), compound enzyme, chelating peptide, mildew remover, etc., as the inside of livestock and poultry feed, can rapid reproduction, on the one hand, into the bacterial metabolites and gut endotoxin inhibits the growth of other harmful flora, on the other hand, it formed the normal microbial flora in the host, synthesis of main vitamin for host, provide nutrition and prevent the invasion of pathogenic bacteria.
Feed Additives
Feed Additives,Feed Additive Sulfobetaine,Herbal Feed Additives,Microbial Feed Additives
SHANDONG ZHISHANG CHEMICAL CO.LTD , http://www.zhishangchemical.com