-
How to polyculture mandarin fish for a high survival rate? Practical methods shared
Mandarin fish is a typical carnivorous fish that only eats live fish and live shrimp. Raising mandarin fish alone requires supporting the culture of forage fish, and the technical requirements are high. If mandarin fish are polycultured in adult fish ponds, the water body can be fully utilized and wild trash fish in the adult fish ponds can be cleared out. In recent years, some farmers have reported
-
How to Raise Koi and Black Carp Together? Practical Experience Shared
In order to fully tap the production potential of the water body, adult fish farming mostly adopts polyculture, dense stocking and rotational culture. If carp is polycultured in the same pond with black carp, because feed is easy to obtain, it grows both fast and well. The commonly used ratio is for every 1 kg of black carp fingerlings stocked, stock 2~4 carp with a total length of about 13 cm
-
How to save feed in yellow catfish farming? Practical tips shared
Currently, yellow catfish farming is fairly widespread and is a major farmed species for increasing income among fish farmers in many places. However, during the farming process, many farmers, in a one-sided pursuit of output, do not know how to save feed and continuously put too much feed and fertilizer into the aquaculture water, not
-
Four Practical Tips for Raising Wild Hares in Summer
1. Clever daily ration matching. In summer, wild hares should be fed a low-energy, high-protein complete feed, with a reasonable mix of concentrate, green concentrate, and roughage. Crude fiber should be controlled at 12%-14%, and green succulent feed with less moisture should be chosen as much as possible. Appropriately feed medicinal plant feeds such as plantain, sweet wormwood, purslane, garlic, chives
-
How to raise river crabs for high yields? Farming experience shared
The pond area for river crabs is preferably 10-30 mu, with a pond depth of 1.2-1.5 m, a slope of 1:(2-3), and a surrounding trench around the pond 2 m wide and 1.8-2.0 m deep. The coverage area of aquatic plants should account for 40-60% of the pond area. Suitable aquatic plants include Elodea, Vallisneria, and Hydrilla.
-
How to mix feed for hedgehog farming? Practical experience shared
1) Energy of the daily ration. Energy in feed and in the daily ration is a question that must be considered first in the process of raising hedgehogs, because the energy component is the nutrient with the highest content in feed, the largest requirement for hedgehogs, and an important role. Moreover, the three major substances in feed
-
How to deal with low reproductive rates in meat sheep? Practical solutions shared
Feeding fishmeal to meat sheep can improve the reproductive rate. Feed-grade fishmeal contains 90% dry matter, of which about 15% is ash, about 65% is crude protein (about 60% is digestible protein that can be directly used by animals), and about 7% is minerals such as crocodile [sic] and phosphorus. It is a good animal-based feed. In order to improve the breeding value of stud rams, further improve the efficiency of sheep artificial insemination, and explore ways to solve the source of protein feed, during the winter mating of 1972, at three mating points of the Heka Stud Sheep Farm, we trial-fed fishmeal to Xinjiang, Tsigai, Polwarth and crossbred rams bred on the farm, with good results. The feeding method is to sprinkle the fishmeal into the feed and mix it evenly. Fishmeal contains long-chain polyunsaturated fatty acids and is a good source of eicosapentaenoic acid and docosahexaenoic acid. Long-chain fatty acids have greater resistance to rumen bacteria. In addition to being rich in protein and more than 50% rumen-undegradable protein, which can increase milk yield and the protein percentage of cow's milk and sheep's milk, another important aspect of fishmeal is that it can inhibit the prostaglandin levels of cows and ewes. According to reports, 30 high-yielding ewes were fed diets with 0, 2.6, 5.2 and 7.8% fishmeal for a total of 42 days, and the results showed that inhibition of prostaglandins in ewes can improve embryo survival rate.</p><p></p><p>Supplementing more digestible undegradable protein in late pregnancy and early lactation can significantly increase peak milk yield and milk yield in the first 8 weeks of lactation. In most studies, milk composition increased somewhat, especially milk protein yield in early lactation. In addition, feeding more digestible undegradable protein may also increase appetite, and fishmeal is a good source of digestible undegradable protein.</p><p>Strengthen selection and mating</p><p>Selection of stud rams: select and breed rams from the offspring of ewes with high reproductive rates. They are required to have standard body shape and appearance, be robust, have well-developed testicles, and have obvious male characteristics, and through measures such as semen quality testing and progeny testing, discover and eliminate rams that do not meet the requirements.</p><p>Selection of ewes: select excellent individuals from the offspring of prolific ewes, and pay attention to their lactation and nursing performance. Prolific ewes can also be retained based on pedigree.</p><p>Use of prolific genes</p><p>Introducing prolific breeds and crossbreeding them with local breeds is the fastest, most effective and simplest method to improve the reproductive rate of meat sheep.</p><p>Control of breeding technology</p><p>Estrus control: 1. Early weaning of lambs is conducive to implementing the technology of two lambings per year. 2. Hormone treatment. First carry out early weaning of lambs, then treat ewes with progesterone for about 10 days, and after withdrawal inject them with gonadotropin (RMSG), which can induce estrus and ovulation. 3. Use the prostaglandin method. Several days after the end of estrus in ewes, infuse prostaglandin into the uterus or inject it intramuscularly, and the ewes will come into estrus 2 to 3 days after treatment.</p><p>Inducing twin and multiple births: 1. Supplementary feeding to stimulate estrus. Carry out supplementary feeding one month before mating to strengthen body condition and promote estrus. 2. Use twin-lamb stimulant or twinning agent. For the water-based product, inject 1 ml per sheep subcutaneously in the neck 5 weeks and 2 weeks before mating; for the oil-based product, inject 2 ml per sheep intramuscularly in the rump 2 weeks before mating.</p><p>Artificial insemination: adopt advanced insemination techniques to improve the conception rate.</p>
-
What problems are there with forage feeding in hare farming?
Hare is the collective name for animals under the genus Lepus and four species in the genera Caprolagus and Pronolagus. Hares are very agile, and the European hare can run at 72 km per hour. In the Arctic regions of North America, the snowshoe hare is relatively common, while in the south the California hare, ⟦4 <p>Hare is the collective name for animals under the genus Lepus and four species in the genera Caprolagus and Pronolagus. Hares are very agile, and the European hare can run at 72 km per hour. In the Arctic regions of North America, the snowshoe hare is relatively common, while in the south the California hare, prairie hare and other species are relatively common.</p><p></p><p>Hares feed on wild grasses, leaves and other plants. In captive breeding, feed sources are wide-ranging; all kinds of pasture grass, green vegetables, straw and so on can be used for feeding. Generally, green feed and succulent feed are given in the morning and at midday, and green feed plus a small amount of pelleted feed in the evening. </p><p>Wild green grass, most tree leaves and crop by-products are important sources of green feed for hares. According to the feeding characteristics of green feed, it can be divided into three major categories.</p><p>1. Staple category</p><p> 1) Tree leaves: mainly mulberry leaves, willow leaves, alder leaves, black locust leaves, redbud leaves, tree-of-heaven leaves, and white poplar leaves.</p><p> 2) Wild weeds: in summer and autumn there are grass-family green grasses such as brome, foxtail grass, Kentucky bluegrass, oats, barnyard grass, thatch grass and bamboo, as well as field weeds such as field wormwood, groundsel and water dropwort; in winter and spring there are shortawn foxtail, limpograss, thatch grass and wild oat grass, etc.</p><p> 3) Vegetable by-products: all kinds of melon leaves, bean leaves, carrot leaves, lettuce leaves, green vegetable leaves, Chinese cabbage leaves, etc.</p><p> 4) Crop by-products: sweet potato vines, corn leaves, sorghum leaves, broad bean leaves, peanut vines, pea vines.</p><p>2. Beneficial category</p><p>Hares do not like to eat these, but they can be eaten; the amount used should not be too much.</p><p> 1) Tree leaves: citrus leaves, cypress leaves, mulberry leaves and pine needles; they respectively have the effects of preventing colds, preventing diarrhea and clearing heat.</p><p> 2) Wild weeds</p><p>① Heat-clearing and detoxifying category: cactus, honeysuckle vine, houttuynia, dandelion, wild chrysanthemum, selfheal, reed bamboo leaves, water coptis, lysimachia, watermelon rind, misgurnus string, plantain; in addition, sweet wormwood also has the effect of preventing coccidiosis.</p><p>② Warming the middle and dispelling cold category: perilla, Mexican tea, shepherd's purse, ageratum, smilax glabra.</p><p>③ Sterilizing and strengthening the spleen category: mainly garlic, garlic sprouts, onion leaves, small onion leaves, Chinese chives, celery; they contain phytoncides and also have antidiarrheal and deworming effects.</p><p>3. Non-beneficial category</p><p>Tests and practice have shown that some green grasses and wild vegetables cannot be used to feed hares, so as to avoid poisoning and death.</p><p> 1) Under no circumstances should the following toxic green grasses and wild vegetables be fed: potato vines, tomato vines, larch, globeflower, Chinese pulsatilla, deciduous azalea, wild ginger, larkspur, castor bean, ragwort, monkshood, black henbane, white henbane, belladonna, water taro, harmel, datura flower, wild grape vine, langdu, etc.</p><p> 2) Some green grasses and green vegetables, when fed to rabbits at a certain stage of growth and development, can easily cause poisoning. For example: yellow and white flower grass, and osmanthus are toxic when in bud and flowering, and must not be fed to rabbits; buckwheat and wild rape are toxic when flowering, and must not be fed to rabbits; flax is toxic when the seeds and stems are mature, and must not be fed to rabbits; feeding potato sprouts to rabbits easily causes poisoning.</p><p> 3) For lactating female hares, after eating colchicum, wet forest grass anemone, medicinal hound's tongue, wood sorrel, wild onion, stinking chamomile, arcuate rock cress, reed, tansy and poison hemlock, the milk carries an unpleasant odor, and the young rabbits will be poisoned after nursing.</p><p> 4) Corn seedlings, sorghum seedlings, potato leaves (containing solanine), castor leaves (containing ricin), and second-growth sorghum seedlings that regrow after autumn also must not be fed to rabbits.</p><p>4. Unusable category</p><p> 1) Moldy and spoiled feed.</p><p> 2) Forage carrying mud, dust or sharp thorns.</p><p> 3) Vegetables, tree leaves and green grasses that have been sprayed with pesticides, while the efficacy period has not expired.</p><p>4) Feed carrying rainwater, dew or frost.</p><p>5) Feed contaminated by feces or urine.</p><p>6) Sprouted potatoes and sweet potatoes with black spot disease.</p><p>7) Legume feed that has not been steamed, boiled or roasted.</p><p>8) Large amounts of forage such as Swiss chard, spinach and Chinese milk vetch.</p>
-
What are the key points for winter breeding management of wild hares?
As people's living standards continue to rise, game meat is becoming more and more popular, but wild resources are far from meeting people's needs, so artificial breeding has become a fairly popular entrepreneurial project at present. It can both meet people's needs and let some
-
How to Save on Roughage Feed When Raising Cattle? Practical Methods Shared
1. Feed less but more often. If you feed all at once, cattle easily develop the bad habit of being picky about palatable forage, which causes feed waste. Feeding less but more often can save forage. 2. Feed long grass cut short. As the saying goes: "Cut grass three times into inch lengths, and even without grain they will gain fat." Feeding cattle forage after chopping it short saves about
条件筛选