CATDOLL : CATDOLL: High-yield and efficient pig breeding technology?

1. High-yield and efficient pig breeding technology?

1. Optimize the pig herd structure

When purchasing pig breeds, pigs with strong antibodies that have been approved and tested for production should be used as the main breeds to optimize the pig herd structure. In addition, in optimizing the pig herd structure, the important role of training and guidance should be highly valued to ensure the comprehensive development of the farm. On this basis, the pig breeding breeds should be continuously updated to give full play to the breed advantages and further enhance the efficiency of production work.

2. Improve the breeding environment

When selecting a site, the farm needs to be kept at a distance from hospitals, schools, etc. to prevent the discharge of wastewater. At the same time, the impact of pollutant emissions on the farm should be avoided as much as possible. 2. Effective reduction of breeding pollution. In the process of pig breeding, a large amount of toxic and harmful gases will be formed inside the farm, and there will also be a lot of dust and noise. The reason is that the farm does not handle pig manure reasonably, resulting in varying degrees of impact on the gas, water and soil in the farm.

3. Reasonable purchase and storage of raw materials

The raw materials should be purchased reasonably to ensure that the raw materials are nutritious. To promote the healthy development of breeding, the key is to establish and improve the production mechanism and further improve the safety level of pig breeding. In this process, it is necessary to maintain the nutrition of raw materials reasonably. Since there are many types of raw materials and the site differences are obvious, in order to ensure the quality and safety of raw material purchase and storage, it is necessary to increase the control efforts. In addition, the preservation quality of feed raw materials should also be strictly controlled. Take corn as an example. Corn is an important component of pig breeding raw materials. During the preservation process, it is necessary to avoid insect bites to ensure the integrity of the raw materials.

4. Achieve fine feeding management

Real-time monitoring of the indoor environment through sensors and cameras, and optimization of pig breeding management through ventilation and other means. Finally, dynamic control of inputs should be implemented, especially drinking water, and additives in water should be strictly tested to ensure that specific requirements are met. In addition, the quality of feed raw materials should be guaranteed to avoid mildew as much as possible.

2. Introduction to cold water fish farming varieties and economic fish?

The species of cold water fish culture are salmon, trout and sturgeon. Their original living environment is mountain streams and rivers. The water quality in natural waters is good and the water temperature is low.

When choosing water sources for cold-water fish farming, spring water and fresh river water should be selected, and the water temperature should be between 10 and 18 degrees Celsius. Farms that use warmer river water as their water source can add some groundwater to lower the water temperature in summer.

Sturgeon replenishes qi and nourishes deficiency, promotes blood circulation and relieves stranguria

3. Which fish species are suitable for breeding under the pig model?

It is feasible for some omnivorous crucian carp, carp, etc., and increasing the plankton content by fertilizing the water with manure can help the growth of silver carp and bighead carp. Basically, it can be used, but it should not be used for fish with higher water quality requirements, such as rainbow trout and mandarin fish.

It is best to use it to fertilize the water after cleaning the pond. During the breeding period, try to control it to avoid deteriorating the water quality.

4. How to breed silkworms to achieve high yield

1. Prepare a suitable breeding box. First, spread a layer of bran or bran stalks on the bottom, and then spread a layer of fine sand.

2. Sprinkle the seeds on the fine sand, making sure to spread them evenly to avoid being too dense or too sparse.

3. Prepare suitable feed, which can be protein-rich foods such as egg yolks, tofu dregs, etc.

4. Place the feed next to the seeds and let the silkworms eat it on their own.

5. Change the feed regularly, or decide the replacement time based on the growth of the silkworms.

6. Monitor temperature and humidity to maintain a suitable growth environment.

5. What are the fish species in Tibet?

According to statistics, there are 73 species (including subspecies) of endemic fish in Tibet, belonging to 3 orders, 5 families and 22 genera. They are mainly composed of 3 major groups: the subfamily of schizothoracinae of the Cyprinidae family of the Cypriniformes order, the genus of plateau loach of the family of thrush, and the family of siluriformes order.

6. What are the species of fish in Minjiang River?

The most common fish in Minjiang River are crucian carp and carp, in addition there are some yellow croaker, grass carp, soft-shelled turtle, silver carp and bighead carp.

Minjiang River is a major river in Dangchang. Minjiang River is clear, fine-sanded, and less polluted. It has been famous for its abundance of fresh fish since ancient times. Among them, Jiangtuan (literally long-nosed abalone) is the best freshwater river fish. Jiangtuan has no scales, few thorns, a round body, tender and plump meat, and is best steamed. Jiangtuan is often selected as a dish for state banquets. For ordinary tourists to taste this best fish, they need both money and luck.

7. What are the fish species in Guijiang River?

Guijiang River, also known as Fujiang River and Fujiang River, is recorded in history as "Fujiang River, connected to Lishui River in the upper reaches and reaching Wuzhou in the lower reaches", starting from the confluence of three rivers at the northern end of Pingle County.

The Guijiang River includes the products of the Lijiang River, Lijiang River, Chajiang River and the lower reaches of the Xijiang River, with hundreds of fish species. In addition to the four major carps, the most famous fish species in the Pingle section of the Guijiang River include more than 50 rare fish species such as black grass carp, black carp, sweet-scented osmanthus fish, sword bone fish, hair bone fish, horsetail bone, water bone, flower eel, sand turtle, mud turtle, yellow horn, bamboo fish, pug fish, and rapids stone fish.

8. Fish breeding techniques?

1.

Stocking time selection: Fish should be released on sunny days when the temperature is not too low. Generally, the temperature should be between 2℃ and 5℃. At this stage, the fish scales are tight and the activity is small. It is not easy to injure the fish during fishing, transportation and stocking operations, which can reduce the morbidity and mortality of fish. It is easy to frostbite the fish on rainy days with low temperature or snowy, frozen and windy weather; when the temperature is too high, the fish scales are loose and the activity is large, which is easy to injure the fish during operation.

2.

Stocking of fish: Before stocking the fish, check whether the drugs have lost their effectiveness after pond cleaning. In early spring, the water temperature is low and the toxicity disappears slowly. Water should be taken in advance and test fish should be released. According to the stocking plan, individual size, density, and matching species and specifications, the fish that can be released at one time should not be released in batches, so that the fish can adapt to the environment, start eating early, and promote growth. At the same time, [Gold Iodine] should be used for drug disinfection when stocking fish.

3.

Feeding at the right time When the water temperature rises to 810℃, fish begin to eat, and the amount of food intake gradually increases with the increase of water temperature, so they should be fed in time. Feed once a day or every other day, and choose to feed at noon on a sunny day; as the water temperature continues to rise, the number of feedings can be increased to twice, that is, feeding once in the morning and once in the afternoon. Feeding should adhere to the principle of four determinations (timing, quality, positioning, and quantity), and the specific daily feeding amount should be flexibly controlled according to the weather, water temperature, and the feeding situation of fish. For grass carp weighing more than 1 jin, it is recommended to feed Da Beinong high-grade expanded feed 8103 in the early stage of feeding; for small grass carp mode, it is recommended to feed Da Beinong microecological juvenile fish special feed [Intestinal Liver Health], and the feeding rate is controlled at about 0.5%1%. This product is rich in nutrients and probiotics, which can quickly repair the fish intestines, restore the physique, and improve immunity.

Four,

Add organic fertilizer to improve the fertility of the water body. Sanyingshuiwang organic biological fertilizer has a long-lasting fertilizer effect. Yizaoyuan promotes algae growth and quickly fertilizes the water. After the fish pond is cleaned, frozen, and disinfected in winter, the fertility of the water body is low. As the saying goes, raising fish starts with raising water, so fertilizing the pond water is particularly important. In spring, it is best to apply organic fertilizer. It is recommended to use biological fertilizers rich in various trace elements [Sanyingshuiwang] or Yizaoyuan, which are rich in trace elements. The specific amount of fertilizer and frequency should be determined according to the quality of pond water and fertilizer.

The general principle is: early spring, large amount and few times, late spring, small amount and many times. Make the pool water green (including blue-green, yellow-green and bean green) or brown (including yellow-brown, reddish brown and tea-brown), the water transparency is moderate, maintained at about 30 cm, the water temperature is low in early spring, it should be controlled at 20-30 cm, the temperature is high in late spring, it should be controlled at 25-35 cm, the water quality should be kept rich, active, tender and refreshing.

9. How to achieve high yield in field snail farming? What are the six keys to high yield in field snail farming?

1. Pond construction

To breed snails, you need to build a breeding pond, ensure the water quality is clean, and then plant some aquatic plants at the bottom of the pond, which is an important food for snails. The pond must be equipped with water inlets and outlets to ensure timely replacement of water quality, and then build a feed feeder to increase the feed supply for the snails.

2. Release of snails

The time for releasing snails is generally in the hot season. They like environments with strong light and can easily eat reasonably according to changes in the environment. The density of release should be controlled, not exceeding 2,000 per acre, to allow the snails to reproduce naturally.

3. Feed supply

The key to snail farming is feed supply. Under stable water quality, reasonable feeding should be carried out. Feed should be fed once in the morning and evening every day. Feeds such as miscellaneous fish meat, shellfish meat or shrimp meat can be fed. The quality must be guaranteed, otherwise it will cause poor growth of snails. The more snails eat, the more times they should be fed. You can also use shrimp, fish and other shellfish to mix them to improve the quality of snails.

4. Daily management

When breeding field snails, care must be taken to prevent the snails from escaping, and timely supplementary feeding should be provided every day. During the breeding process, feed residues should be cleaned regularly to ensure the water quality is clean. New water should be replaced regularly and in time to improve the water quality, and the water should be disinfected with lime water until the breeding environment of the field snails is controlled to a good level and the yield of the field snails is increased.

10. How to choose high-yielding dairy cows based on breed?

In recent years, dairy cattle breeding in my country has developed rapidly. Many corporate and individual farmers have invested in cattle breeding. Then how to buy high-quality and high-yield dairy cows has become a key issue. The following is about the selection of dairy cows.

According to the 1985 national professional standard "High-yield Dairy Cow Feeding Management Specifications" ZBB43002.85, high-yield dairy cows refer to herds and individual dairy cows with a milk production of more than 6,000 kg and a milk fat rate of 3.4% (or equivalent milk fat) in a lactation period of 305 days. According to statistics of 695,154 registered fine breed cattle in my country in 1994, the average milk production was 7,500 kg. In the same year, among the Holstein registered cattle in the United States, there were 256,945 cows with milk production records, with an average milk production of 8,730 kg and a milk fat rate of 3.66%. It can be seen that the milk production level of high-yield dairy cows in different eras and different countries is different. How to choose high-yield dairy cows? It is recommended to select from the following aspects.

1. According to the breed of dairy cows

The current dairy cow breeds in the world mainly include Holstein (also known as black and white), Jersey, Guernsey, Ayrshire and Swiss brown. More than 95% of the dairy cow breeds raised in my country are Chinese Holstein (Chinese black and white), in addition to Xinjiang brown, Sanhe and grassland red. Holstein is a large-bodied dairy cow with the highest milk production. There are many herds with an annual production of more than 10,000 kilograms. The highest herd in my country has reached 8,773.2 kilograms. The highest individual milk production cow in the United States, Reed, has produced 30,833 kilograms of milk in 365 days, with a milk fat rate of 3.3%. Therefore, in order to obtain high milk production, Holstein should be selected first. In areas with poor breeding conditions, other breeds can also be selected.

2. According to milk production performance

Measuring the milk production and milk fat rate of cows (some also measure milk protein rate) is the most important basis for selecting high-yielding cows. For each dairy cow, producers should measure the milk production once a month and have the milk collection unit analyze the milk fat rate once. The interval between the two measurements should not be less than 26 days and not longer than 35 days. Under normal circumstances, dairy cows calve once a year and stop milking for 2 months before giving birth. Therefore, the milk production time of one lactation period is stipulated to be 305 days, and it can also be 365 days for high-yielding cows. From a genetic point of view, milk production and milk fat rate are negatively correlated. The higher the milk production, the lower the milk fat rate. Therefore, in addition to milk production, milk fat rate should be paid more attention to when selecting high-yielding cows. Bulls with low milk fat rate should never be selected for breeding. Secondly, there is another characteristic of selecting high-yield cows. After giving birth, the peak of milk production occurs later than that of low-yield cows (generally 56-70 days after giving birth for high-yield cows and 20-30 days after giving birth for low-yield cows), and the peak period lasts longer (about 100 days); after the peak period, the decline in milk production of high-yield cows is slower than that of low-yield cows; at the end of lactation, low-yield cows generally stop producing milk automatically, while high-yield cows continue to produce milk. If you want to buy a dairy cow, the buyer must check the milk production record of the cow you want to buy or observe the actual milk production on site.

3. Based on body shape and appearance

The quality of a cow's body shape and appearance is closely related to its milk production performance. Practice has repeatedly proved that selecting a good body shape and appearance, especially good udders and limbs and hooves, is very important for improving milk production performance. The body shape of a normal high-yielding cow must have the following characteristics: tall physique, large mid-body volume, obvious milk-producing body shape, firmly attached udders, strong limbs and hooves, and moderate nipple size. To be more specific, the requirements are: 1) Weight and size: American Holstein adult bulls weigh 1,100 kg and are 160 cm tall, while adult cows are 650 kg and 140 cm respectively; the height of adult Holstein cows in northern my country is 136 cm, and that in the south is 130 cm. 2) The overall shape is a triangle, that is, from the front, with the tibia as the vertex, two straight lines are drawn downward along the shoulders on both sides. The two straight lines become wider as they go down, forming a triangle; from the side, the hindquarters are deep, the forequarters are shallow, and the back line and the belly line extend forward and intersect to form a triangle; from the top down, the forequarters are narrow, the hindquarters are wide, and the two lateral lines intersect in front to form a triangle. 3) Udder, it is the most important functional body shape feature. The base of the udder should extend forward and backward, and be well attached. The four udder areas are symmetrical, and the hind udder area is high and wide. The teats are vertically columnar and the spacing is symmetrical. 4) Limbs and hooves, especially the hind limbs are more important. The cow's reproductive organs and udders are in the hindquarters, which requires strong hind limbs. In short, any dairy cow with a tall body, obvious milk characteristics, and well-developed digestive, reproductive, and lactation organs must be able to eat, drink, and produce more milk.

4. According to the genealogical lineage

The contents include: dairy cow breed, cow number, date of birth, birth weight, adult body size, weight, appearance score, grade, and milk production performance of cows in each parity. The pedigree should also include the weight, appearance score, grade of the parents and grandparents, the milk production, fat content, grade of the cows, and the diseases, quarantine, reproduction, and health of the cows. It is important to select high-yield dairy cows based on the above information and it should not be ignored. If you buy dairy cows, you must take epidemic prevention measures to avoid human diseases, especially tuberculosis, infectious abortion, leptospirosis, trichomoniasis, and mastitis.

5. According to age and parity

Age and parity have a great impact on milk production. In general, the age of first mating is 16-18 months, and the body weight should reach 70% of that of adult cows. The milk production of first-parity cows and second-parity cows is 15%-20% lower than that of cows with more than three parities; the milk production of cows with three to five parities increases with each parity, and the milk production decreases with each parity after six to seven parities. According to research, the milk fat rate and milk protein rate decrease slightly with the increase of the age and parity of dairy cows. Therefore, in order to make dairy cows or dairy cows more productive, producers must pay attention to the selection of age and parity. Most people believe that for a high-yielding herd of cows, if the average parity is four, the reasonable parity structure is: 1-3 parities account for 49%, 4-6 parities account for 33%, and 7 parities and above account for 18%.

The above are some common methods for selecting high-yielding dairy cows. You can use them in the process of purchasing dairy cows.