The nutritional requirements of animals were formerly known as Feeding Standard. Based on the animal's different species, sex, age, weight, purpose and level of production, experience accumulated in production practice, combined with the results of energy and substance metabolism tests and feeding experiments, scientifically stipulating that an animal should be given daily The amount of energy and various nutrients, this regulation is called the feed standard. The so-called "standard" word often gives an absolute concept. It is difficult to promote and apply in breeding practice. In order to make "standards" applicable, often adding a safety factor or specifying a range, it would lose the meaning of "standards". In recent years, there has been a tendency to change "standard" to "reguirement" to reflect the average demand of the group.
Due to the short history of artificial bear-cultivation, so far, there have been no special reports on the nutritional needs of bears at home and abroad, nor have they established a national unified "feed standard." Sichuan Institute of Veterinary Research, Jia Zhengyou, Li Shiwan, et al. (1987) used a three-year-old and three-drained gallbladder to take a digestive metabolism test. For bear-bearing lactation, growth bears, breeding bears, and bears The research on the amount of demand is a blank.
There are three kinds of bears in our country: namely, bears, brown bears and black bears. The largest number of bears in the country is black bears, which account for about 70-80%. The brown bears are the second and the bears are the least. Now represented by black bears, its nutritional needs are described as follows:
(I) Explanations on the preparation of requirements The method for determining the nutritional requirements of black bears is based on feeding test and digestive test result data, selecting and using representative data to calculate and sort, and to absorb domestic and foreign monogastric animal nutrition science. The advanced experience system is customized. Based on observations and experiments over the past few years, we have shown that black bears have many similarities with pigs in their selection and utilization of feed. However, the crude fiber content in black bear diets is lower than that in pigs. Crude protein is higher than pigs, poorer digestibility than pigs, and slower growth than pigs.
Tests have shown that raising the black bear according to the nutritional requirements we have prepared not only protects the bear's health, speeds up growth and normal reproduction, but also improves the survival rate and the production capacity of the bear. For example, Sichuan Province's Chinese herbal medicine company deer farms reared nearly 500 black bears of various ages and raised them according to the required amount of cultivation. The artificial breeding succeeded. The survival rate of bears reached 90% or more, and the weight in June was over 30 kilograms. The guts increase by about 20%.
This nutrient requirement is based on actual conditions and is based on actual conditions divided into bear suffering (before 6 months of age), rearing period, gestation period, lactation period, and the nutritional needs of adult bear black bears.
(b) Indicators of nutritional needs
1. Kinds of Nutrients Physiologically speaking, various types of nutrients required by various animals are the same, including energy, protein, various amino acids, various vitamins, and various mineral-requiring elements. There are more than 50 species in total.
From the practice of feeding, the types of nutrients needed vary depending on the type of bear, physiological stage, and the like. Based on current actual production conditions, we identified the types of nutrient requirements as: major items such as dry matter, digestive energy, crude protein, crude fat, crude fiber, calcium, phosphorus, and salt.
2, determine the indicators of the amount needed to feed a certain number of nutrients, the effect is from all aspects of performance, and each aspect of the performance is not the same. Therefore, it is necessary to clarify the indicators of the amount needed. According to the purpose of raising bears, its indicators are changes in weight and the amount of bile taken.
(c) Units of measurement for demand
1. The unit required daily for each head per head varies depending on the nutrient. If the energy is in kilojoules, milligrams, etc., use kilojoules, megajoules, crude protein, crude fat, minerals, etc.
2. Nutrient Concentration The percentage of nutrient content per kilogram of diet can be calculated according to the state of feeding (natural moisture), air-dried state or dry matter.
3. The ratio of energy to nutrients, for example, how many milligrams of iron per megajoule of digestive energy. The relationship between energy and protein is often expressed as the ratio of energy to protein (can be compared to the ratio).
Energy (kilojoules/kg diet)
Energy to protein ratio =────────────────
Crude protein (g/kg diet)
(D) The determination of the amount of need to determine the nutritional needs of bears is a combination of comprehensive and factorial and physiological effects, so that the need to determine the more accurate. To study the nutritional needs of bears, since bears are valuable protective animals, they cannot be compared to the carcass test, and only through feeding tests, balance tests, biological methods, etc., and refer to the nutritional needs of omnivorous animals. The standard.
Bear's nutrition needs from the physiological point of view can be divided into the need to maintain life and production of two parts. Production needs are divided into growing, breeding, taking bile and other needs.
The hydraulic lifting Massage Table is made of a high density rebound sponge. The leather is composed of durable PVC leather, high-grade hydraulic tattoo bed, beauty bed, nail tattoo multi-bed, detailed workmanship, hydraulic chair lift, which can be leveled to 180 degrees. The back and legs can be manually adjusted and rotated 360 degrees to meet various posture requirements.
feature:
1. Stylish, strong and technical sense
2. Low noise, long life regulator
3. Pillow can be removed
4. Available breathing hole
5. The backrest/pedal can be adjusted manually by 80 degrees, the height can be adjusted by the hydraulic pump from 60cm-85cm
6. Stable metal frame stabilizes the entire bed
7. Bed is divided into 3 pieces of sofa, more durable
8. The color of the leather can be changed
Hydraulic Lifting Massage Table
Hydraulic Lifting Massage Table,Hydraulic Massage Table,Folding Hydraulic Lifting Massage Table,Hydraulic Lifting Massage Bed
MING MEI ROYAL SPA FURNITURE , http://www.mingmeibeauty.com