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How to select breeding nutria? Sharing breeding experience
Generally, adult nutria from 6-7 months to 3 years of age are selected. Selection work should be carried out year-round, and it is best to conduct quality evaluation of the breeding stock from late November to mid-January. Selection is based on body size, body weight, body condition, fur quality, color, reproductive capacity, progeny quality, and other factors.
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Sharing Experience on Spring Safety Management of Goslings
People often say: Spring geese are easy to raise, but spring goslings are hard to brood. In large-scale production, the mortality rate of goslings from 0 days to 21 days of age is relatively high, among which mortality caused by harsh environmental conditions and unscientific management accounts for more than 60% of the total deaths of goslings. Environmental factors causing gosling deaths such as
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Experience Sharing on Placing Fish-Rearing Cages in Flat-Bottomed Rivers
In flat-bottomed rivers with a water depth of more than 2.5 m and little year-round variation in water level, fish farming with cages works very well. 1) Generally speaking, a height of 50 cm between the cage bottom and the riverbed is sufficient. Leaving a gap between the cage bottom and the riverbed facilitates water flow, which first adds oxygen and second serves to exchange water ⟦4 <p>In flat-bottomed rivers with a water depth of more than 2.5 m and little year-round variation in water level, fish farming with cages works very well. </p><p></p><p>1) Generally speaking, a height of 50 cm between the cage bottom and the riverbed is sufficient. Leaving a gap between the cage bottom and the riverbed facilitates water flow, which first adds oxygen and second serves to exchange water and improve water quality. The height of the cage body can be 2.5-3 m. After this depth is immersed in water, 50 cm of netting is left above the water surface to prevent jumping fish from escaping. It is best to cover the top with netting to prevent birds from stealing and eating the fish. </p><p>2) It must be noted that the cage should be placed in a sunny spot, a place with a gentle flow speed, or a place with backflow. As far as the whole river channel is concerned, backflow areas are often places where fish gather; backflow areas have gentle flow speeds and abundant feed, making them very suitable for fish growth. </p><p>3) If the river channel is not deep, moso bamboo can be driven in as stakes, the cage tied with ropes, and marker lines indicating the cage's draught depth marked on the stakes, making it easy to adjust in time and stabilize the cage depth. Use slip knots for the ropes to make it easy to raise and lower the cage body. </p><p>4) For this fixed-type cage, tie straight strip-like objects along the top and bottom ropes of the cage body; for example, thin bamboo poles can be used for the top and bottom ropes, and iron bars can also be used for the bottom rope, stretching the entire cage flat and straight, avoiding folding of the netting in the water and reducing capacity. Install rings at the four corners of the cage. When in use, fit the rings at the four corners onto the bamboo stakes, and the formed cage will be firmly tied to the bamboo stakes and ready for farming. The rings can also be tied to the bamboo stakes, four on the top and four on the bottom, using pull ropes to control the entire cage body, following the rise and fall of the water level, and adjusting the draught depth of the cage body in time. In places with gentle flowing water, feed is most abundant. When the cage body is flat and straight, the fish are most comfortable. </p>
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Experience in Overwintering and Breedstock Preservation for Rice Field Eel Farming
Practice has proved that doing a good job of overwintering and breedstock preservation for rice field eels can ensure a bumper harvest in the coming year. Harvesting rice field eels: In artificial farming of rice field eels, harvesting and pond clearing must be done before overwintering. Harvesting methods include: 1. Use several bamboo eel traps, place pig liver, earthworms and other bait inside, set them around or at the bottom of the pond, place them at night and collect them in the morning, and about 80% or more can be harvested.
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Sharing Experience on Spring Breeding of Hares, Worth a Reference for Breeders
In spring, as temperatures rise, the fertilization rate of hares is relatively high; spring is also the peak growing season for wild grasses and forage grasses. Therefore, mastering the spring breeding of hares is the key to improving the economic benefits of hare farming. The technical key points are introduced as follows. 1. Select good breeding rabbits. Choose
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How is artificial insemination done in beef cattle? Farmers share their experience
Timely and accurately depositing a certain amount of high-quality semen into the appropriate part of the reproductive tract of a cow in estrus is extremely important for improving the conception rate of cows. 1. Preparation before insemination: The vulva and perineum of the cow to be bred should be washed with warm water and disinfected; at the same time, prepare the insemination equipment and semen. The insemination gun should be disinfected, the plastic sleeve of the gun is for single use, and the semen must undergo a motility check and meet the insemination standard before it can be used.
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Sharing Experience and Tips for Winter Farming of Wild Ducks
There are relatively many species of wild ducks, and the main one currently domesticated is the American mallard. Mallard meat is tender, delicious and flavorful, and relatively low in fat, making it a traditional nourishing food and wild-game delicacy. This kind of wild duck grows quickly. At 70 days of age, the average body weight can reach 1.2 kg, and at 5
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How to Raise Golden Pheasants? Practical Breeding Experience Shared
Although the golden pheasant has the word "pheasant" in its name, it does not belong to the pheasant family; it is very different from the ordinary chickens we usually see. The golden pheasant is actually a species of bird, with extremely beautiful feathers and a very precious breed, but
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Sharing Experience in Building a Stone Frog Breeding Farm
Many people nowadays are fairly optimistic about stone frog breeding, and the price of stone frogs on the market is quite good, so it has a certain profit prospect. Before breeding stone frogs, the first thing to do is certainly to build a stone frog breeding farm, and the construction of a stone frog breeding farm also has
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Sharing Experience in Northern River Crab Farming Management
The scientific name of the river crab is Chinese mitten crab (Eriocheir sinensis). Its flesh is delicious and nutritious, and it has certain medicinal value. Domestic market demand is large, economic returns are considerable, and farming prospects are broad. But we all know that the weather in the north in winter is much colder than in the south, so
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