Study on Nutrition Parameters and New Formula Technology of Pig and Chicken
To solve the global shortage of protein feed and the environmental pollution caused by nitrogen in livestock and poultry excreta has become one of the topics of animal nutrition research in various countries, and it is also one of the research contents of this project. The key technology is how to scientifically evaluate the quality of feed protein, prepare a balanced diet of carbon, nitrogen and amino acids, and improve the utilization rate of feed protein. The main contents of this study are as follows:
The main results are as follows: (1) the contents of digestible amino acids and other effective components in 40 kinds of feed commonly used in pigs and chickens in China were systematically determined by using internationally recognized advanced test methods (ileo-intestinal anastomosis pig and cececectomized chicken). The Chinese feed composition table based on digestible amino acids was completed. The evaluation of feed protein quality was promoted from the content of crude protein, digestible crude protein and amino acid to the stage of digestible amino acid content, which was rich in the basic theory of nutrition.
The contents of total phosphorus and non-phytate phosphorus in 40 kinds of feed were determined, and the concept of available phosphorus was replaced by the content of non-phytate phosphorus in feed, which more accurately expressed the existence mode and availability of feed phosphorus, which was of great significance for the rational utilization of feed phosphorus and mineral phosphorus.
(2) the requirement of digestible amino acid and the requirement, tolerance and interaction of vitamin A, D and E in broilers of different genders were studied systematically by "dose response method". Combined with the production practice in China, 66 nutrient demand parameters of broilers were put forward, and the main nutrient supply scale of broilers was completed.
(3) according to the seasonal change, the nutritional requirements such as digestible amino acids of laying hens and broiler breeders were studied, and 28 parameters of nutritional requirements of laying hens and 36 parameters of nutritional requirements of broiler breeders were put forward.
(4) by using international advanced technology and methods, the nutrient requirements of growing-finishing pigs were studied, and 33 nutrition parameters suitable for the situation of our country were put forward. It fills the gap of domestic research in this field.
(5) the feed formula knowledge base based on pig and chicken feed knowledge base, nutrition knowledge base and pig and chicken feed formula design expert system was established.
The diets were prepared according to this composition table and the recommended amount of nutrients for pigs and chickens, the average body weight of 7-week-old broilers reached 2.30kg, feed reward 1.9kg / kg, feed reward 1.9kg / kg, average yield of each laying hen was 17.5kg, feed reward 2.60bure1, and average daily gain of growing and finishing pigs was 900g, feed reward 2.50guan1. This achievement plays an extensive guiding role in feed industry and pig and chicken breeding industry and has strong practicability. Over the past four years, 2.965 million tons of mixed feed for pigs and chickens, 5088 tons of premix, 144400 tons of concentrated feed and 1880 tons of additives have been promoted, achieving direct economic benefits of 344 million yuan.
- Prev
Pathogenic characteristics and control measures of gastric erosion in chickens
Chicken Muscular Stomach Erosion is a disease similar to Intestinal Ulcer, which occurs in chickens, especially broilers. The occurrence of this disease is closely related to the use of fish meal in chicken feed. The occurrence of this disease often brings corresponding economic losses to chicken production. 1. Clinical symptoms and characteristics of disease can occur in chickens of 1 ~5 months old, and the mortality rate varies, and the high can reach more than 10%. The affected chickens were mainly characterized by decreased appetite, mental atrophy, crouching, fluffy feathers, emaciation, pale comb and beard
- Next
What specific medicine does the treatment of goose aspergillosis have?
1. On May 22,1998, a goose farmer bought 1000 goslings each and fed them in an outdoor plastic shed to feed the hybrid rice purchased in the grain depot. On June 18 and 19, more than 40 geese in the two flocks developed cough and were treated with oxytetracycline powder, Baiyanqing and other drugs, which did not improve, and spread to more than 100 geese. Serious cases even showed open mouth breathing, a few runny nose, head shaking, and about 30 faces in the flock were swollen. Erythromycin and Livestock and Poultry Chuankang were used again on the 21st.
Related
- On the eggshell is a badge full of pride. British Poultry Egg Market and Consumer observation
- British study: 72% of Britons are willing to buy native eggs raised by insects
- Guidelines for friendly egg production revised the increase of space in chicken sheds can not be forced to change feathers and lay eggs.
- Risk of delay in customs clearance Australia suspends lobster exports to China
- Pig semen-the Vector of virus Transmission (4)
- Pig semen-the Vector of virus Transmission (3)
- Five common causes of difficult control of classical swine fever in clinic and their countermeasures
- Foot-and-mouth disease is the most effective way to prevent it!
- PED is the number one killer of piglets and has to be guarded against in autumn and winter.
- What is "yellow fat pig"? Have you ever heard the pig collector talk about "yellow fat pig"?