In winter, the temperature is low, and the house is insulated and has poor ventilation. This often results in cloudy air, heavy ammonia, and unpleasant stimulation of the chicken's respiratory tract. In addition, the body immunity of chickens is reduced in winter and respiratory diseases and other infectious diseases are easily acquired. Therefore, according to the physiological characteristics of winter nutrition of brown shell layer chickens, a reasonable preparation of feed can improve immunity, prevent diseases, and enhance the ability to resist harsh environments. Basic principles of feed formulation The scientific principle is the foundation of feed formula design and is mainly reflected in nutritional balance and palatability. The determination of nutritional parameters in the economic principle must be combined with practice. The selection of feedstuffs should be based on local conditions and timeliness. It is necessary to rationally arrange feed processing procedures and save labor costs and reduce costs. The principle of operability is the feasibility of production. The type, quality stability, price, and quantity of formula used in raw materials should be compatible with market conditions and corporate conditions. The type and phase division of products should meet the production requirements of the aquaculture industry, and the feasibility of the processing technology should also be considered. Market principle. The goal of the product is the market. The design of the formula must be clear about the positioning of the product. The principle of safety and legality. Products formulated according to formula should strictly comply with national laws and regulations, such as nutrition indicators, sensory indicators, health indicators, packaging, and labeling of laws. In particular, illegal drugs cannot be used. The use or content of substances that may be harmful to animals and human body should strictly comply with the national regulations. In addition, formula design must also consider the environmental impact of the product. Factors to consider when formulating formulations Nutritional factors that affect egg production. Mainly dietary energy levels, energy ratios, vitamins, trace elements, and calcium and phosphorus ratios. Affect the nutritional factors of egg weight. Linoleic acid: Linoleic acid is involved in fat metabolism, so its effect on egg yolk can affect the size of the egg. The linoleic acid level in the diet to ensure maximum egg weight is currently recognized as 1.5%. Energy: The growth of reserve hens is the most sensitive to the energy concentration of the diet. Increasing the energy intake results in the development of new hens that are heavier in weight, and opening weight is an important factor in determining the size of the eggs. The effect of dietary energy level on egg weight is mainly through feed intake, energy intake is a key factor affecting egg production, and protein intake is a key factor in determining egg weight. Protein: Protein levels, or more precisely, protein intake, are the main nutritional factors that affect egg size. Amino acid nutrition is the essence of protein nutrition.
China Herbal Extracts,Ginseng Extract manufacturer, choose the high quality Olive Leaf Extract,Echinacea Extract, etc.China Herbal Extracts,Ginseng Extract manufacturer, choose the high quality Olive Leaf Extract,Echinacea Extract, etc.
We had passed FDA certificate and ISO 9001 .Welcome any inquiry and question on our featured products
Herbal Extracts,Ginseng Extract,Olive Leaf Extract,Echinacea Extract Xi'an Healthway Biotech Co.,Ltd , http://www.xahealthway.com