2. Ask for an essay about raising pigs.
Hybrid pigs cannot be used as breeding pigs. Hybrid pigs are big, healthy and grow fast, but they can't be used as breeding pigs. Because of its extremely unstable genetic performance, when it is used as a breeding pig, its offspring will have serious character separation, such as lower feed reward, slower growth rate and weakened disease resistance.
Granular feed cannot be mixed with water. Some pig farmers like to mix granular feed with water to cook porridge for pigs, which is unscientific. After adding water to pellet feed, the nutritional components will be destroyed and the nutritional value will be reduced. The correct way is to feed dry food before drinking water.
Sleeping after eating cannot be said that pigs have certain living habits, that is, eating, exercising and resting. Especially piglets under 40 kg should have some time to play around noon every day. Sleeping after eating may be due to the addition of sedatives (such as chlorpromazine) in the feed, which destroys the normal physiological function of pigs and makes them sleep under anesthesia. Sedatives can reduce blood pressure, body temperature and heartbeat, and affect the normal metabolism of pigs. If these drugs remain in pigs, they will do harm to human body.
Strong feed flavor does not mean good quality. Some pig farmers often judge the quality of feed by its smell, which is wrong. For example, there is an additive called ammonia fishy smell on the market now, which will appear fishy smell when added to feed, reminding pig farmers to be aware of this.
Black manure does not mean good feed quality, but depends on feed conversion rate. The color of feces is usually determined by the composition of feed intake and the digestion and absorption ability of pigs. Some pig farmers think that the feed with black manure is good, but the feed with yellow manure is not good. Some feed manufacturers cater to the psychology of pig farmers. Adding copper sulfate and other substances that have no effect on the growth and development of pigs makes the feces black, but it increases the cost of feed and the burden of pig farmers, and has no obvious effect on promoting growth.
Pigskin is red and shiny, which can't explain the quality of feed. Some pig farmers think that the pig skin is red and the feed is good. The skin color and the brightness of the pig's fur are determined by the content of nutrients in the feed, mainly protein, fat and vitamins. Some feed production enterprises increase the content of selenium and copper in feed, which makes the skin of pigs turn red, but there are still a lot of selenium and copper left in pork. Eating this kind of pork will do serious harm to human body.
Biting a pig's tail does not mean malnutrition. Pigs will have pica if they don't get the necessary nutrients for a long time, such as salt and protein, or if they lack some vitamins and trace elements. However, the feed produced by regular manufacturers will not be seriously short of these substances, and there will be no phenomenon of eating differently. The reasons for biting the tail are: the density of pigs is too high, the environment of piggery is bad, the light intensity is high, and some nutrients are lacking. Tail-biting pigs are mostly between 10kg-40k g, especially about 20 kg pigs, suckling pigs or pigs over 40 kg are rare. Pigs weighing 10 kg ~40 kg are in the frolic period. The only attack weapon of a pig is its mouth. At first, they bit their tails for fun. Biting blood has become a hobby of pigs in the same row. Most pigs lick or arch their tails out of curiosity, which is one of the important reasons for biting their tails. In this case, the injured pigs should be isolated and the newborn pigs should be cut off.
3. The composition sentence describing pig raising in rural areas is "Yuanyuan, why don't you go home and have a look?" Dad asked me again. I am still an old saying: "No, never!" "This reminds me of something I did in my hometown before: the place where we slept was on a dry thatch, and there were no mosquito nets. Mosquitoes bite insects at night, which keeps me awake all night; There are piles of cow dung in front of the door, which are smelly and dirty. I don't know what my feet will look like when I step on them. The muddy road is full of puddles. If you accidentally step into a puddle, your whole foot will sink, and finally you can pull it out, but your shoes will stay in the mire ... Dad seems to see my mind and say to me, "My hometown is not what it used to be." "I thought to myself: Is this true? So I followed my grandfather back to my hometown by car.
Came to my hometown, ah! How beautiful! Is this my vertigo? I rubbed my eyes, didn't I? The original bumpy road has now become a flat asphalt road, with flowers and trees planted on both sides of the road, bees singing, butterflies flying, and tall buildings rising from the ground. My father and I came to my uncle's house. Wow, my uncle's house has also changed. The walls are painted as white as snow, as if they were made of powder and Daiyu, as if they were wrapped in white. The furniture is also brand-new, engraved with dragon and phoenix patterns. The house is very good. It's convenient and quick to switch to gas stoves ... I feel like I'm in a fairyland on earth. My uncle took me into a room and opened a piece of cloth. Ah, this is exactly what I am familiar with-a computer. My uncle skillfully operates the computer, as if talking about the piano. My sister has a computer, too. She plays computer very well. The old social concept of son preference is gone forever now. I can't believe that the quality of my hometown people has improved. After lunch, I took a leisurely walk and saw that those farmers in the distance no longer cultivated land with oxen, but with various tractors. The sound of plowing is like praising the changes in my hometown.
People in my hometown have changed, the land has changed, the transportation is convenient, there is a telephone, and so on. But what caused these changes? I was puzzled when two women were talking and laughing. One said, "I'm still * * *, and I'm not patriarchal. I just found out now that girls are so great! " "My daughter, too ..." I suddenly realized that this is the credit of * * *! I think: if we talk about the future, it will definitely get better here!
A pleasant change
4. Introduce how to write a composition for aquaculture majors. There are ripples in the fish pond from time to time. It turned out that some small fish jumped out of the water as if welcoming you.
There are several people catching all the fish by the fish pond and moving them. In front of the fish pond are two rows of pig houses with more than 10 thousand pigs.
The first row of the pigsty is full of big pigs. Every pig is fat, lying on the ground and sleeping late, unwilling to get up. The second row is full of piglets. Some piglets are just born, and before their eyes are opened, they are sucking milk sweetly on their mothers' stomachs. Some people have just learned to stand and walk trembling; Some pigs quickly learned to be independent, and many learned to be independent, but they were timid. In case someone comes, they will run to the corner with a bang and squeeze into a small "pig mountain" They will look back at you from time to time with curiosity and fear, and then bury their heads in the "pig mountain" and want to drill a hole to hide in it.
I hope you have a chance to go there and see lively little fish and cute little pigs.
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Original publisher: 365 papers
After careful analysis and repeated thinking, I think that with the rapid development of China's national economy, people's material life and consumption level are improving day by day, and people's concept of diet and health is also obviously improved, especially the vision of green food is broader. In short, people will have a greater and more urgent demand for healthy and high-quality food. The reason why I developed this special breeding industry is because according to my observation for many years, although the family breeding of wild boar has gradually taken shape in recent years, it has just started, and the number can be said to be very small, which is far from large-scale development. Moreover, according to my observation, the farm can be integrated with the original ecology of nature. The natural environmental conditions of the West Park can be said to be unique and have broad prospects. In order to firmly grasp this new development opportunity, I am determined to work hard on the entrepreneurial road of aquaculture with a hundredfold effort. Now I will report the plan and details of establishing a wild boar farm as follows: 1. Investment scale and budget (1) Infrastructure investment 1 .50,0001.The total length of tap water project is 65438. 2. Build three reservoirs (50 cubic meters of water, 20 cubic meters of water, 10 cubic meters of water) at a cost of 30,000 yuan; 3. Erecting 500m high-voltage transmission lines, with a cost of 20,000 yuan; 4. Set up a transformer with a cost of 6.5438+0.5 million yuan; 5.3 thousand yuan to set up lighting circuits on the farm; 6. Construction of a 500-meter highway from Dali Road to the farm at a cost of10.5 million yuan; (2) Investment in fixed assets 1, construction of pigsty 1, covering an area of 400 square meters, with a cost of 1.5 million yuan; 2. Construction of septic tanks 1 unit, with an area of 100 square meter and a cost of10.4 million yuan; 3. Build two feed storage warehouses and crusher processing rooms, covering an area.
Step 6 visit a pig farm
Today, the school held an activity and let us visit Rongshan pig farm.
The school bus bumped on the rugged mountain road, and suddenly an unpleasant smell came to the nose. I looked out and stood a sign in the distance. The car is getting closer and closer, the words on the signboard are getting bigger and bigger, and the pungent smell is getting stronger and stronger. In a blink of an eye, I have reached my destination. The vague small print on the brand has now become a big bronze word with golden light-Rongshan Pig Farm. I came to the birthplace of this smell, and Xiao Pang took the lead in joking. "You really have to bring a bucket of oxygen bottles, or you will really be smoked to death!" "You see, Jin Shuai's nose is almost smoked off, haha ..." At this moment, a young man wearing a white coat and a pair of short-sighted glasses came in the distance. "Is he a pig farmer?" I can't help wondering. "Students, this is Uncle Xiao Wang, the technician of the pig farm." "Hello, Uncle Wang!" We shouted with one voice. "Hello, classmates. Today I will be your tour guide and visit our pig farm together."
Under the guidance of Uncle Wang, we walked into the pig farm and saw a fat pig. Several workers are still bathing the pigs. Uncle Wang also told us a lot about raising pigs and the benefits of pig farms, but I was really not interested in raising pigs, so I didn't listen carefully. "Students, this is our biogas station." Uncle Wang looked proud, and we came to the spirit. Because pig farms produce a lot of pig manure every day, if pig manure is poured into rivers, it will seriously pollute the environment. Therefore, pig farms have invested a lot of money to build biogas stations. Pouring pig manure into the acidification tank every day, the pig manure will slowly decompose in the acidification tank, and the gas discharged after decomposition is biogas. Biogas can be burned instead of gas, which is not only safe but also pollution-free.
Before he left, Uncle Wang also let us drink Longjing tea that he specially burned for us with biogas. "ah! It smells good, thanks to pig manure. " Xiao pang is joking again. ...
7. Composition of living habits of pigs (scientific name: Susscrofa domestica), mammals, Artiodactyla, pigs and omnivores.
Pigs generally refer to domestic animals. The pig is the end of the zodiac, also known as the sea system.
Pig breeding in China has a history of at least 5600-6080 years. Pigs have short fat limbs, docile temperament, strong adaptability, easy feeding and rapid reproduction, with black, white, sauce red or black and white flowers.
Pigs can be bred 5- 12 months after birth, and the gestation period is about 4 months. The average life span of pigs is 20 years.
One feeds on domestic fat animals, cute when I was a child, scary when I grew up, big nose, big ears, eating more and growing fast. In fact, pigs have necks, but they are a little short (I wonder if anyone thinks pigs have no necks like me). It seems that some people always think it's stupid, but it's actually a misunderstanding. In fact, the pig is a very clever animal, seemingly simple and honest, but actually a little short-tempered.
Now there are piglets as full-time pets. They are really cute, but they still don't have the courage to have one. People always think that pigs are stupid. This is really a great injustice! Recently, through long-term observation and research on the living habits of pigs, it has been proved that pigs are kind, docile and intelligent animals. It is neither as obedient as cattle and horses, nor as overbearing and fierce as goats; Neither ungrateful like a cat, nor flattering like a dog.
In many ways, dogs are not as clever as pigs! After training, pigs can not only master various skills and movements like dogs, but also have shorter training time than dogs. Some specially trained pigs can dance, drum and swim; Some will push the car straight; Some clever pigs can also be "pigs and dogs"; Some people can even sniff out mines buried in the soil with their noses.
Pigs can also be guards like dogs. In the United States, some farmers use pigs to defend the land of the manor, and also bite strangers who have strayed into the manor.
Another farmer raised two pigs to guard the pond instead of people in order to prevent cattle from being bitten by snakes when drinking water by the pond, and achieved good results. Pigs can not only prevent snakes, but also like to eat them.
Scientists have proved through experiments that it is scientific to raise pigs to prevent snakes, because pig fat is thick, which can neutralize snake venom and prevent snake venom from entering blood vessels. The sense of smell of pigs is also very developed.
In some parts of France, an expensive edible fungus black truffle grows underground. Local farmers regard pigs as powerful assistants for harvesting black truffles.
Pigs can smell black truffles growing 25-30 cm underground from 6 meters away. Although dogs can also undertake this job, it is much more difficult to train dogs than pigs, and they have to be searched every day. If they are separated by a few days, they will forget.
In this respect, pigs are much more capable than dogs. Even if it only searches once a week, it won't forget the skills it has learned. Besides, the pig is still a player on the sports field! A few years ago, at the national farm exhibition held in the United States, a unique pig race was held.