Generally speaking, pond culture, box culture and free-range culture are more common. Feeding ponds can be made of bricks, stones and cement, or they can be used.
Wood board, plastic board, etc. Generally 60 cm long, 40 cm wide and 35 cm high, there is clean straw at the bottom of the pool.
Or sawdust. The breeding grounds are cleaned 2 to 3 times a week. Shanghai Jianong Agriculture and Animal Husbandry Science and Technology Service Co., Ltd. through practice,
It is considered that cage culture is effective. Cage culture does not require frequent replacement of padding and cleaning, which not only saves a lot of padding and labor, but also
Cages are easy to keep clean and dry. The cage is made of galvanized wire mesh, and the mesh is 16 iron 1.2cm× 2.4cm.
The screen is suitable.
2. Stocking density. Black dolphins like to live in groups and can mate with 1 females. According to the size of the cage, determine the stocking amount.
Generally, the length and width are 100 cm× 50 cm, and 1 male and 4 females can be put; 80 cm ×50 cm can hold 1 male and 3 females; 60 cm
×50 cm can put 1 male 2 female; 45cm× 35cm can hold 1 male and 1 female. Ponds and boxes should be properly diluted.
Put it on.
3. Feeding management: Black dolphins like to eat green bristlegrass, absinthe, water bamboo leaves, wheat seedlings, heart-saving grass, reed leaves and alfalfa.
Weeds and vegetables such as Chinese cabbage leaves, lettuce, sweet potato vines and watermelon peel. Generally, it is fed once every morning and once every night.
Each serving is about per meal 150g. In order to meet the nutritional needs of its breeding period, a small amount of wheat, grain and corn can be supplemented.
Flour and other concentrate, the daily consumption is 25g/piece. There is plenty of green feed, and generally no water is needed.
Black dolphins like to be clean and dry, and the discarded particles should be cleaned and disinfected regularly. Do a good job in indoor environmental sanitation at ordinary times. Don't feed rotten green
Material and moldy food. Put an end to rodent pollution of feed. Sun protection in summer and warmth in winter. Wire cage culture
Yes, in sub-zero weather, the bottom of the cage should be covered with appropriate amount of straw to keep warm, especially in cages with young dolphins.
4. Reproduction. The male and female identification of black dolphins is similar to that of rabbits. Press perineum with your hand to see if there is penis or vulva.
The shapes of men and women can be confirmed. Black dolphins mature early. Female dolphins are born 35 to 45 days, and male dolphins have sexual characteristics in 70 days.
Performance. The sexual cycle of female dolphins is 16 days, and the pregnancy is about 68 days. Generally 3-5 litters and 6-9 litters, with an annual output of 4.
Five children. After the black dolphins are paired and stocked, there is generally no need for manual management. They will mate, have children and live on their own.
Yes, nurse. Male and female dolphins in the same cage will never harm the cubs of other female dolphins. Most female dolphins are in heat at night.
Between 5 am and 5 am, the duration of estrus is 1- 18 hours, with an average of 9 hours. After female mating, vaginal opening
There is a kind of embolism similar to gelatin, that is, vaginal suppository, which can be concluded that mating is successful. It is forbidden to put two males in the same room when raising in groups.
Dolphins, so as not to cause female fights and affect reproduction.
After the calf is born, it can walk and suck milk, run after a few hours and eat grass for two to three days. one
From the fifth day after birth, young babies can eat feed and suck at the same time. The lactation period of young dolphins in summer and winter is generally 15 days.
The season is 20 days. A well-developed dolphin can weigh about 200 grams at the end of lactation.