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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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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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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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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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Sharing Spring Breeding Experience in Toad Farming
When you start farming toads, you can catch adult toads from the wild around Qingming each year to keep as breeding toads. After they emerge from hibernation each spring, the breeding toads call frequently and males and females begin amplexus behavior. At this time, male and female toads should be paired promptly in a ratio of 1:2-3 and moved into
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What to do about coughing and wheezing in weaned piglets? Experience sharing on traditional Chinese medicine prevention and treatment in pig farming
Coughing and wheezing in piglets from 10 days after weaning to 30 kg body weight is usually associated in Western veterinary medicine with porcine postweaning multisystemic wasting syndrome (i.e. circovirus) infection, with an incidence rate ranging from 20 percent to 45 percent; the mortality rate of affected piglets is generally 30 percent, and can reach as high as 80 percent, with body temperature of 40.5°C to 41.5°C. Piglets show rough and disheveled coat, affected pigs have diarrhea combined with respiratory symptoms and neurological symptoms, severe emaciation, and death from exhaustion. This disease poses a very great threat to the pig farming industry. It is most severe in the three seasons of spring, autumn and winter. In traditional Chinese veterinary medicine theory, this disease belongs to warm disease symptoms; the cause is external contraction of wind pathogen invading the lung, and cold, summerheat, dryness, warmth and the like can all combine with it. The main site of the lesions is in the lung. In traditional Chinese veterinary medicine theory, lung qi governs respiration and opens into the nose, externally corresponding to the skin and hair, and governs the opening and closing of the interstices. When lung qi is sufficient, the opening and closing of the skin and interstices is normal, and external pathogens are not easily able to invade; otherwise the pig body is plagued by disease. Using Qingfei Zhike San combined with Maxing Shigan San with modifications, this formula can pungent-cool diffuse and vent, clear the lung and calm wheezing, clear and purge lung heat, and resolve phlegm and stop coughing. Add it to piglet feed as a powder at 0.6 percent, continuously for 2 to 3 weeks. In Western veterinary medicine theory, this formula is believed to have fairly strong antibacterial and inhibitory effects on Actinomyces pleuris, Staphylococcus aureus and Pneumococcus; this formula also has effects such as anti-influenza virus action, and also has obvious antipyretic and anti-inflammatory effects, and can improve the immune function within the animal body.
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Sharing Experience and Key Points on Raising Peafowl in Spring
In spring, as temperatures rise and daylight hours increase, the activity level of blue peafowl flocks increases and their metabolism becomes vigorous. This is the season when blue peafowl lay the most eggs, and also the best season for hatching, brooding, and raising new blue peafowl flocks. At this time, feeding management should be strengthened by
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