In the early spring, chickens often huddled in cold henhouses, decomposing body fat to produce large amounts of heat to withstand cold, or increase self-regulation. This not only consumes constitution but also reduces feed conversion. Therefore, doing a good job of keeping cold insulation in the chicken house is the top priority in feeding and management in early spring. specific methods:
Increase the heat insulation layer of the house
If the roof of the chicken house and the northern wall are found to be frosted, the insulation sheds should be increased. Use plastic sheeting or tar paper to increase the temperature barrier and block the north window. Wind barriers can also be provided to ease the cold wind in the proper place of the main wind from the house. The optimum egg production temperature is 18°C~23°C, and the ideal temperature is 21°C. If it is lower than 13°C, the egg production of breeders will decline; if it is lower than 12°C, the growth and development of broilers will be seriously hindered. When the temperature is low, the fan speed can be reduced, reducing air circulation.
Pay attention to ventilation
In early spring, in order to keep warm, windows are often closed and closed tightly, resulting in air pollution, increased humidity, and damp materials. Ammonia, hydrogen sulfide, carbon dioxide, methane, and skatole are multiplied. Dust and microorganisms are more than the house. health standard. Light on the chicken's feather growth and unfavorable to the feet, severe respiratory disease, broiler ascites and so on. Therefore, a certain airflow rate (0.1m/s~0.2m/s) should be maintained in the early spring chicken house so that the ammonia concentration in the house does not exceed 200 mg/kg, the hydrogen sulfide does not exceed 10 mg/kg, and the carbon dioxide does not exceed 0.5. %, to meet the chicken house health standards.
Adjust the feeding amount according to the temperature
Chickens of the same condition have different energy requirements under different temperatures. In early spring, broiler breeders can feed 150 grams to 170 grams of feed each day, increasing the feed heat energy to 12.1 MJ~12.3 MJ, which can meet the needs of low temperature heat energy. In case of cold currents, the temperature suddenly drops, and the chickens themselves cannot adjust the feed intake all at once. It will produce a great deal of stress. Therefore, attention should be paid to the weather forecast at any time. Add 10 grams to 20 grams of feed to each chicken 1 day to 2 days before the cold current. For 3 days to 5 days, the chickens can get 112.86 kJ~142.12 kj. Heat to maintain body temperature and egg production levels. For each temperature drop of 3°C, about 5 grams of feed should be added. After the cold has passed and the temperature has risen, the original amount of feed has been restored. At the same time pay special attention to the quality and quantity of various Amino Acids. Increase the proportion of high-energy feed in the feed, and appropriately reduce the protein content.
Plant extract is a product formed from plants as raw materials, through physical and chemical extraction and separation process according to the needs of the use of the final product extracted, to obtain and concentrate one or more active components in plants in a directional way, without changing the structure of the active components.
Proportional extract is the extract, liquid extract or powder made by the extraction and concentration of raw materials such as plants and animals. The number of raw materials before extraction and the mathematical ratio of the product after extraction and concentration generally do not have very clear composition and content.
1. According to the content of active ingredients, it can be divided into three types: effective monomer extract, standard extract and ratio extract;
2. Divided into glycosides, acids, polyphenols, polysaccharides, terpenoids, flavonoids, alkaloids, etc.
3. According to the product form, it can be divided into vegetable oil, extract, powder, lens, etc.
4. According to their use, plant extracts can be divided into natural pigment products, traditional Chinese medicine extracts, extract products and concentrated products.
Plant extract ,Proportional extract,TLC,Thin layer chromatography,Chinese herbal extract
PYSON Co. ,Ltd. , https://www.pysonbio.com