Bullfrog [English name]

[Local name] Noisy frog, edible frog.

Ranidae (Rani DAE) animals, scientific name bullfrog. This solitary aquatic frog, named after its loud sound, resembles Niu Jiao, hence the name bullfrog, which is the largest frog in North America. Originated in several eastern States of the United States, and later spread to western States and other countries. Other large frogs are also called bullfrogs, such as the box-headed frog (R. adspersa or Pyxicephalas adspersa) in Africa, the tiger frog (R. tigrina) in India and the Ranidae in South America. Bullfrog has a green or brown body, a white to yellow abdomen and black stripes on its limbs. The body length is about 20 cm (8 inches) and the hind limbs are 25 cm (10 inch). Adults weigh more than 0.5 kg (1 lb). Often live in or near still water. Breeding in spring, eggs are laid in water. Tadpoles are green-brown with black spots. Tadpole stage duration 1? 6? 53 years, depending on climatic conditions. Many bullfrogs can be eaten or used as experimental materials.

Bullfrog originated in the Rocky Mountains of North America. 1959 was domesticated in China, and 1986 was reared in large quantities in south-central China. The main varieties are: swamp green bullfrog, western bullfrog, Indonesian bullfrog, African bullfrog, African bullfrog and so on.

First, the shape of the bullfrog:

Bullfrogs are big and strong. Adult frogs are 20 cm long and weigh 1 kg. The back is green-brown, with dark brown markings, and the abdomen is gray. This male frog has a yellow throat and rough skin.

B, the breeding value of bullfrog:

Bullfrog is a world-famous meat frog, especially its legs are very popular in the international market. In addition to human consumption, bullfrog skin can also be tanned, and the processed leather can be dyed into exquisite leather shoes, handbags and gloves.

Morphological characteristics editing This section is the same as the general frog, but the individual is larger. The female frog is 20 cm long and the male frog 18 cm, and the largest individual can reach more than 2 kg. The head is wide and flat. Mouth position, nose sharp and round. The exophthalmos of the eyeball is divided into upper and lower parts, and the lower eyelid has a wrinkled instantaneous membrane to close the eyeball. The back is slightly rough and has fine leather edges. The limbs are stout, the forelimbs are short and webbed. Male individuals have an obvious gray tumor-like process on the inside of the first toe. The hind limbs are long and big, and the toes are webbed. Skin color changes with the living environment, usually green-brown on the back and limbs, with dark brown stripes on the back; The head and mouth are bright green; The ventral surface is white; The color below the larynx varies from male to female. Most females are white, gray or dark gray, and males are golden yellow. The song is very loud. It is named after Niu Jiao.

Origin and season editing This paragraph originated in North America. From 65438 to 0959, it was introduced into China inland from Cuba and Japan. At present, China mainly relies on aquaculture production, which is produced all over the country, mainly in Hunan, Jiangxi, Xinjiang, Sichuan, Hubei and other places. Commercial frogs are mainly in autumn and winter.

The bullfrog in this section has fast growth, delicious taste, rich nutrition and high protein content, so it is a very valuable food. It can also be exported to earn foreign exchange. Its skin can also be tanned, and it can be used as medicine when it is dirty. Bullfrog grows fast and its meat is tender and delicious. It is a high-grade nutritious food with low fat and high protein. Frog skin can be used to make high-grade leather, and its turf is thin, soft and tough, which is the material for making high-grade wallets. Excellent raw materials for belts, ties, shoes, musical instruments and surgical lines. Frog viscera can be used as medicine, and frog oil can be used to make advanced lubricating oil.

This bullfrog is nutritious and delicious. Every 100g frog meat contains protein 19.9g and fat 0.3g .. It is a nutritious food with high protein, low fat and low cholesterol, which is deeply loved by people.

Bullfrogs also have nourishing and detoxifying effects. People with poor digestive function or hyperacidity and weak constitution can be used to nourish the body. Bullfrog can promote human vitality and energy, nourish yin and strengthen yang, and has the effects of nourishing heart, calming nerves and invigorating qi, which is beneficial to the rehabilitation of patients.

The viscera and offal of bullfrog are rich in protein, which produces compound amino acids after hydrolysis. Among them, arginine and lysine are high in content, which is a good food additive and tonic. Hydrolyzed compound amino acids are used in medicine and cosmetics industry after separation and purification. The endocrine system of bullfrog secretes a variety of hormones, which can be used in medicine, industrial production and scientific research after extraction. For example, pituitary hormones are used as artificial oxytocin in fish and amphibians, which is beneficial to artificial reproduction. The stomach gland, intestinal gland and pancreas of bullfrog are rich in digestive glands, especially the glands that hydrolyze protein, which can be extracted and utilized. The bile of bullfrog is extracted and processed for medicinal purposes. Frog skin can be used as an excellent raw material for making surgical lines. Oviductus Ranae can be used to make high-grade lubricating oil.