Formula Design Program of layer Feed

Source: Beijing Jiaguan Xingnong laying hen formula design procedure 1. First, determine the daily feed intake of high-yield laying hens, which is determined by the daily energy required by laying hens, which is the basic principle and basis of laying hen feed design. it is also an important consideration factor to investigate the feed grade of layers in competitive enterprises. 2. To determine the optimal daily protein requirement of laying hens, it can be divided into three ways: the maximum laying rate design, the maximum egg weight design and the best benefit formula design. 3. Determine the daily calcium requirement. 4. Determine other formula parameters and formula standards according to the above required parameters. 5. According to the above parameters, the structure and processing parameters of diet and the matching of feed type were selected. Examples of specific calculation and processing parameters: (take Roman brown medium-sized laying hens as an example) Environmental standard requirements: Roman brown medium, ambient temperature 21 degrees, relative humidity 50-70%, standard body weight 1.45 kg. The suitable weight for starting production is 1.45 kg, and it is suggested that the management should be strengthened to 1.48-1.50 kg, which will help to prolong the laying period and egg evenness, and it is easy to obtain larger eggs (this benefit is greater than that of early eggs). Metabolic energy requirements of environmental standard conditions: 307kcal/ daily, feather, 3.4g / day calcium, 18.6g / day minimum protein to meet the maximum egg weight, now the designed peak feed intake is 118g / day, feather peak feed: metabolic energy requirement: 307mm 0.118g 2600kcalxkg; dietary calcium requirement: 3.4g / 118g = 2.88% 3.05% (3.5% considering processing and quality variation) Protein requirements: 18.6 pound 15.76%; in order to meet the minimum protein digestion requirements, the minimum ratio of lysine to crude protein is not less than 4.6%, lysine requirements is 15.76% 4.6% 0.725%, methionine: lysine = 0.45%, methionine is 0.326%. According to the principle of selective feeding of laying hens, the raw materials are corn, crushed 2 to 4 pieces, soybean meal, coarse crushed or directly added from different raw material sources, cottonseed meal, large particle direct input from raw material sources, rapeseed meal direct input, sunflower seed meal, coarse crushed direct input, fish meal, fish plasma protein meal, pig oil dregs., direct input; wheat bran direct input; use iodine to make salt, use calcium hydrogen phosphate or bone meal, direct input The content of calcium and the total amount of calcium in fine stone powder which may be added is about 1.0%. The mixture of granular stone powder and shell powder is selected to supplement the rest of calcium. Formula correction: weight correction: for every 1kg weight gain of laying hens, metabolic energy needs to be increased by 36kcal/d, that is, when the late Roman brown weight is 2000 grams, it needs to increase 550g body weight, 360.55kg 19.8kg / d; 19.8pm 2600g / day, the total feed intake is 1188kg 126g, that is, 126g in standard environment. Environmental correction: when the temperature rises or decreases by one degree, the metabolic energy 2kcal/kg per kilogram of body weight increases or decreases, the suitable range is 15-27 degrees, below 15 degrees consider environmental improvement, and higher than 27 degrees consider heat stress. Body condition correction: feathers are complete, following the above algorithm, feathers are scarce and missing, and the demand for metabolic energy is increased. The necessity of adding fat: fat is not only an important source of energy, but also a source of heat stress and some important nutrients for laying hens. At the same time, the addition of fat reduces dust and improves the feeding performance of laying hens. Especially when there are too many fine materials, it will affect the realization of the feeding goal. The problem of quality competition (attacking the competitor's product design): according to the above principle, the product orientation can be basically determined by investigating the competitor's feed use; layers have a feeding phenomenon: habitual feeding. That is, when changing the feed, the laying hens will abide by the feed intake of the day before. when the nutrient concentration of the designed diet is higher than that of the previous feed, the daily nutrition of habitual intake increases or remains the same, but the laying rate decreases when it is lower than that of the previous feed. it is also the main factor that laying hens are unwilling to change. Another problem is the formula structure, mainly the influence of digestibility. Generally, it returns to normal feeding 3-7 days after refueling, but it is of positive significance for customers to refuel. Energy should be considered first when refueling. According to the above algorithm, it is easy to calculate the metabolic energy parameters of competitors, and then cooperate with laboratory testing, so are there any problems with other parameters? The technical principle and determination method of the best benefit formula of laying hens: the technical fact of the maximum laying rate is a stage that was later considered to be determined in order to distinguish the formula requirements of different periods. it is the formula requirement when the early eggs are suitable to calculate the sales results according to "beating" or "number". At that time, the main laying hens were white-shell layers represented by "Xingza 288". Vitamin supply and protein research, especially energy and protein research, are the main characteristics of this period; generally, it is about 17019 eggs per kilogram; it is replaced by 16 eggs produced per unit time of medium-sized laying hens in the later stage. With the change of egg sales market, the maximum egg weight is based on medium-sized chickens to increase egg weight and feed nutrition requirements when calculating output by weight, which is mainly characterized by the use of fishmeal and the study of amino acids. High fishmeal not only brings larger egg weight, but also produces more death rate and anus prolapse and other problems; it also provides an opportunity for the later listing of large chicken breeds. After experiencing the requirements of maximum egg production rate and maximum egg weight, it is gradually realized that the best benefit technology is the fundamental requirement of laying hen production, so the feeding of laying hens is required to include feed cost, optimal egg weight and peak laying time. as well as the current pollution-free, functional eggs, firewood eggs and other requirements, the requirements for laying hens are more detailed and complex. The principle of the best benefit formula: the current best benefit formulation technology is based on the minimum production cost, that is, the minimum cost of producing the same number or weight of eggs, or producing the same number of eggs at the minimum cost. Taking the minimum cost as the target parameter, the design is based on the minimum daily feeding cost of laying hens. From the above analysis, it can be seen that the feed intake of laying hens is based on the effective energy provided by feed, and the daily energy requirement determines the feed intake, and the daily nutrient requirements can be accurately known. in this way, through the feed intake design, we can produce different grades of high-yield layer feed and feed standards with different nutrient concentrations; feed with different formula costs within a certain range of raw material selection. Taking the feed unit price * daily feed intake = daily feeding cost of laying hens as the object, the minimum value is the lowest feeding cost formula (the best benefit formula), and the condition is that the laying rate is the same as the egg weight. The formula design method and feeding management of laying hens according to the principle of selective feeding: the existence of the phenomenon of selective feeding of laying hens lays the foundation for the new method of feed formulation of laying hens, and the supporting feeding management (feeding method) is also adjusted according to its principle. In the experiment from 1998 to 2001, the cost of feed formula was reduced by 8%, the intake of free feed intake was reduced by 10%, the egg breaking rate was greatly reduced, and the benefit was increased by about 20%. The related formulation technology is currently mastered by Guangzhou Zongtai. (Lu Liang)-body condition correction: feathers are complete, following the above algorithm, feathers are scarce and missing, and the demand for metabolic energy is increased. Thank you. I've benefited a lot! Thank you for sharing and collecting. -- A very good article benefits a lot! Thank you for sharing!-thanks for sharing and benefiting-the competition in the feed industry makes it impossible for many layers to be designed in such a strict way! -- it is very well written, and I have benefited a lot from it!-- listening to your words is better than reading a ten-year book! Ha ha. -- I collect it, too. Go back and study it. Mastering the method is the most important-- good information that is completely free of charge. Thank you.-- Thank you.-- this seems to be Dr. Luliang's masterpiece. Studied.