Nutritional value of black dolphin

[alias] Dutch pig, Dutch rat, and guinea pig are called black dolphins because of their black body.

[Origin] the black dolphin is native to Peru in South America.

Mammalian herbivore

In ancient China, there was a habit of eating black dolphin beaver meat, and it was selected as a high-end wild vegetable into the Chinese famous recipe. Su Dongpo, a poet and gourmet in the Song Dynasty, regretted that he had not tasted the meat of the dolphin and beaver for the rest of his life, and wrote a poem saying, "he was captured in the warehouse, ashamed that he could not eat." The delicacy of the black dolphin beaver has its own "turtledove in the sky, dolphin beaver on the earth".

Nutritional value of black dolphin

Both medicine and food. Black dolphin meat is delicious and delicate, easy to digest and absorb, and the folk regard it as a "body-strengthening treasure" whose fur can be processed and used.

Black dolphin is a kind of multi-purpose herbivore. Its meat is delicate and delicious. It belongs to low-fat and low-cholesterol meat. It has strong game characteristics and is rich in protein. It also contains 17 kinds of amino acids, calcium, phosphorus, iron and other trace elements, and is rich in melanin and anticancer elements zinc and selenium. The content of trace element iron is three times that of soft-shelled turtle, which is the best tonic for women in childbirth and after surgery (its effect is far more than that of soft-shelled turtle and black chicken). Black dolphin meat is an ideal nutritional and nourishing health food. Nutrition experts say that black dolphins are beauty meat for women, bodybuilding meat for young people, nourishing meat for children and anti-aging meat for the elderly. Black dolphin meat has obvious dietotherapy effect on stomach disease, hypertension and coronary heart disease. in addition, zinc, selenium and other elements have anticancer effects. Therefore, it is an ideal natural nourishing health product, which has the effects of nourishing, nourishing and strengthening yang, and has a good regulating effect on malnutrition, anemia, insomnia, loss of appetite, fatigue and so on. Regular consumption can also effectively balance various nutrients needed in the body, promote normal secretion and metabolism in the body, and enhance immunity.

The breeding method of black dolphin

1. Breeding facilities

There are a variety of ways of raising black dolphins, which are generally adopted in accordance with local conditions: cage breeding, pond-type captive breeding, three-dimensional scale factory breeding.

① cage: where a small amount of breeding can be used in this way. The utility model has the advantages of being able to control reproduction, feed and keep clean and hygienic. The cage can be made of wood strips, bamboo chips and iron wire, with a scale of 60 cm × 50 cm × 40 cm.

② pool type captive breeding: suitable for bungalows and wide houses. The room is divided into a 0.5-1 square meter pool with bricks and planks, and some sawdust or hay had better be padded in the pool, which is conducive to keeping warm and absorbing moisture. At present, most of them are raised by this method.

③ three-dimensional factory feeding: its scale is large, relatively centralized, easy to manage, operate, raise a large number. Use brick or wood, iron bar to make 3-5 layers, the bottom is slightly inclined, so that feces flow out, easy to manage. There are small doors in the pool and cage. All kinds of feeding methods generally have a small density of 8-10 per square meter and a large density of 10-20.

2. Feeding and supply

The eating habits of black dolphins are very miscellaneous, and adequate nutrition is needed for normal growth, development and reproduction. As the black dolphin is a herbivore, the digestibility of crude fiber is high, such as long-term supply of green material or hay and other plants, the peeling phenomenon will occur, so the feeding supply should be refined, green materials should be properly matched.

① concentrate: corn meal, wheat bran, rice bran, etc., can also be fed to piglets.

② green material: fresh tender grass, such as oak grass, corn leaves, sugarcane leaves, leaves, green vegetables, peels, carrots, sweet potatoes and so on.

3. Feeding and management of black dolphins

Feeding and management is the key to black dolphin breeding, with emphasis on preventing feed from mildew and deterioration. When pellet feed is fed directly, you should put clean water for drinking, or mix feed, eat less and eat more, about 40 grams of adult diet, twice a day, to keep the trough clean and hygienic. After feeding the concentrate, fresh green material is added at the same time. The green material had better be cut and fed on the same day, and the daily intake of green material per adult is about 250 grams to prevent feeding of green material contaminated by pesticides.

The feeding room should be kept quiet, the feces should be cleaned every day, and the utensils should be scrubbed clean frequently. It is best to keep the room temperature at 18-25 ℃ and the relative humidity at 45-55%. Keep warm in winter. Prevent rodents and snakes from entering the breeding room to create a comfortable environment for black dolphins.

4. Black dolphin breeding

According to the preliminary observation, the female is about 45 days old, and the male is about 70 days old, but the first mating period of the female should be after 70 days to ensure the reproduction rate.

The time of maternal estrus lasts 1-18 hours. After mating, there are rubber-like embolism and secretory mixture at the vaginal orifice. According to whether this embolism is present or not, we can judge whether the black dolphin is successful or not. When raising in large groups, 2-3 mothers are often used to mate with one male, and do not put more than 2 males for mating at the same time, otherwise it will cause struggle and affect mating. In the course of breeding, if there is a close relative variant of the same generation, that is, the healthy bodies of male and female distant relatives should be replaced to improve the degree of purebred; if it is propagated as the original species, the method of one male and one female distant breeding can be adopted. The mother can breed after weaning, or put it into the male within half a day after giving birth, if it is successful, it can improve the reproduction rate.

During the gestation period of 56-68 days, the number of black dolphins was 1-6 and 3-15. The cubs began to feed 3-5 days after birth, and were weaned at about 15-20 days and raised separately.