Meat feed technology
I. Breeding of meat products (I) Breeding of meat products
Small meat dumplings within 1.4 to 5 weeks of age are young meat dumplings. Brooding is the key, generally artificial or warm. The environmental temperature requirements are as follows: 1 week old 27°C, 2 weeks old 24°C, 3 weeks old 22°C, 4 weeks old 20°C, 5 weeks old 18 to 20°C. The specific temperature should be adjusted according to the behavior and distribution of small carcasses.
2. The feed requires the preparation or purchase of full-priced pelleted feeds. The particle diameter of 0-3 weeks old is not more than 1.5 mm, the metabolic energy is 12.2-12.5 MJ/kg, and the crude protein is 19.5%-22%. After 4 weeks of age, the total feed pellet diameter is 1.5 or 3.5-4 mm, the metabolic energy is 11.7-12.5 MJ/kg, and the crude protein is 17%-19%.
3. The hatched ducklings are required to eat first and then eat, and the requirement does not exceed 18-24 hours. Drink water first with 0.1% potassium permanganate or drinking water for one to two days, and then add appropriate amounts of fasting and norfloxacin or doxycycline drugs in drinking water to enhance physical fitness and prevent diseases. Open the food by placing it on a platter or on a sackcloth to allow it to feed freely.
4. Whether the ground meat is raised on the ground or kept on the net, straw or linen mats are used. The grass and linen are replaced. The light in the house should be sufficient, artificial light at night, completely natural light after 4 weeks of age.
(II) Meat pupa feeding 4 to 5 weeks to 10 weeks old meat pupa with enhanced digestive abilities, high feed intake, and resistance to roughage. In addition to increasing the full-rate feed intake daily, they should also add grass and vegetables. Such as green feed, fattening to 10 weeks of age, male meat weight up to 3.5 to 4 kilograms, about 1.5 to 2 kilograms of female meat can be listed. Management should be separated from the male and female breeding groups, each group of 100 to 300 is appropriate, can raise 5 to 8 per square meter. Since moulting starts at this stage, it is prone to flaws. Attention should be paid to breaking and shading. The meat quail has the name of dry duck, and large groups of breeders only need a small amount of man-made pool or basin for drinking, but it is necessary to pay attention to drinking water clean and can not be interrupted.
Second, the rearing species of meat feeding (a) 9 to 24 weeks of age for the reserved species of meat should be chosen to stay in the body of a large male and female meat, male and female ratio 1:4 to 5 election stay, reserve duck should be restricted feeding Feed, reduce feed nutrition levels, proper weight control. The weight of the female broiler can be controlled between 2.3 and 2.8 kg before laying eggs, and between 4 and 5 kg for males of the same age. The metabolic energy of the diet can be 11.3 to 11.7 MJ/kg and the crude protein can be 14% to 16%. The average amount of material used for each meat carp is 100-150 grams per day. Generally, 25-50 grams of green material can be fed daily. When the production is started, the crude protein and metabolic energy levels of the diet can be appropriately increased so as to gradually transition to the nutrient level during the laying period and ensure a higher egg production during the laying period.
(2) The meat quarters should be ventilated, bedding grass to raise 3 eggs per square meter, have enough nest boxes, and pad wells to reduce broken eggs. A large group of breeders can surround the entire corner of the meat hut and put the straw directly on the ground. Pay attention to the scent of the meat, and the most effective method of waking up is to house it. Two more days and nights are reserved in each bar. Transfers must be made in the evening. And pay attention to house cleaning and disease prevention.
Author: Institute of Animal Nutrition, Sichuan Agricultural University, China: Rural Science and Technology 2003.01
Absorbent is also called absorbent. This substance can make the active ingredient adhere to the surface of its particles, and make the liquid trace compound additive become a solid compound, which is beneficial to the uniform mixing. It is a solid substance which can adsorb some of its components effectively from gas or liquid. It has large specific surface area, suitable pore structure and surface structure, strong adsorption capacity for adsorbate, generally does not react with adsorbate and medium, is easy to manufacture and regenerate, and has excellent adsorption and mechanical properties. Adsorbents are generally used in industrial production, so adsorbents can be divided into six categories according to the common industrial use.
1. silica gel, it is mainly used for drying, gas mixture and separation of petroleum components.
2. alumina, it is also a dehydrating adsorbent.
3. activated carbon is mainly used for water treatment, decolorization and gas treatment.
4. polyacrylamide is mainly used for domestic sewage and organic wastewater.
5. zeolite molecular sieve for gas adsorption separation, gas and liquid drying;
6. carbon molecular sieves mainly act as transport channels, while micropores play the role of molecular sieves.
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