CATDOLL : Usage of CATDOLL:doubt

1. Usage of doubt

doubt: doubt, disbelief

doubt about is followed by a word or phrase. Here, doubt can be a verb or a noun. For example: Now I doubt about the meaning of love. There is no doubt about my love.

doubt that is followed by a sentence to express doubt about something that has happened or will happen, such as: I doubt that he marries my daughter for money.

I doubt he married my daughter for money.

doubt if/whether is followed by a sentence to express doubt about whether something will happen or exist

Now I doubt if there true love lives.

Try to compare

I doubt if she will change her mind.

I doubt that she will change her mind. means I'm afraid she won't change her mind.

2. How to use traditional methods to catch crucian carp?

Characteristics and fishing techniques of crucian carp

Characteristics of Crucian Carp and Fishing Techniques

When it comes to fishing, crucian carp is indispensable. If you want to catch crucian carp in natural waters, you must understand their characteristics and master certain fishing skills.

1. Characteristics of crucian carp

Crucian carp, belonging to the genus Carp of the family Cyprinidae, was called ridge and carp in ancient times. It is called Xitou in the south, crucian carp in the north, and crucian carp melon seeds in the south. It can be found in almost all waters across the country. The most prominent characteristics of crucian carp are summarized as follows:

(I) Strong adaptability and high reproduction rate. Crucian carp is resistant to cold and heat, low oxygen and pollution. It can survive in waters that other fish find difficult to adapt to. The best growth period is when the water temperature is 15-25℃. It can still eat when the temperature is below 10℃ and above 30℃. Crucian carp can lay eggs the next year. The number of eggs in a large crucian carp can reach 100,000, and the number of eggs in a small crucian carp can be around 1,000. From spring to autumn, as long as the climate and water temperature are suitable, they will continue to spawn.

(2) They love grass and like to be sociable. Because there is abundant bait, sufficient oxygen and good concealment around water grass, weeds and cattails and reeds are the places where crucian carp like to play, forage and hide in groups. Each group of crucian carp is about the same size and has a certain regionality. They are gentle and timid, afraid of being disturbed. At the slightest sign of trouble, they will immediately dive into deep water or grass to hide. "If you don't fish in the grass, you will mostly run around aimlessly" is a fishing proverb that has been passed down based on the characteristic of crucian carp's love of grass.

(3) Diverse diet. They eat everything from insects to algae, from meat to vegetarian bait. Their diet also changes with the seasons and water temperature. Generally speaking, when the weather is cold and the water temperature is low, they like to eat meat baits such as bloodworms and earthworms; when the weather is hot and the water temperature is high, they like to eat vegetarian baits such as various doughs. Based on the above characteristics of crucian carp, the seasonality of other fish anorexia periods is very obvious, but crucian carp can be fished all year round, but the catch rate varies.

2. Fishing skills

A fishing proverb says: "There are three tricks to fishing crucian carp: a soft rod, thin line and a small hook." As long as the fishing gear used in natural waters has these three points, you can catch crucian carp.

(1) The fishing group combination should be sensitive. It is important to match the float, sinker and hook appropriately.

(II) Watch the float. Generally speaking, when crucian carp eat, they lower their heads and lift their tails, suck in and spit out, repeating this 2-3 times. When they feel that the bait is to their taste and there is no foreign matter, they raise their heads and swim away with the bait. The float is reflected in the slight movement up and down, up and down, and then the float slowly rises, which is often called the floating movement. Because crucian carp are of different sizes and the water environment is different, there are roughly five types of floating phenomena on the float after they bite the hook: small floating movement, large floating movement, trembling floating, muffled floating and drifting floating. Most of the small floating movement that is fast and low is small crucian carp, and the large floating movement that is slow, steady and high is large crucian carp. These two are the basic and main floating phenomena after crucian carp eats and swallows bait. Other floating phenomena such as trembling floating, muffled floating and drifting floating are not common, but they are not absent. If you do not pay attention to these three rare floating phenomena at all times, you will often lose the opportunity to catch a large crucian carp.

(III) Lifting the rod. Lifting the rod is a key link in determining the rate of catching fish. It seems easy and simple, but it is highly technical. The key is to grasp the timing of "not too early or too late" on the basis of accurate observation of the float. The timing of "not too early or too late" is only about 0.1 to 0.2 seconds. It will not work if the rod is lifted too early or too late. If it is too early, the crucian carp has just held the bait in its lips; if it is too late, the fish has already spit out the hook or is about to spit out the hook. At this time, if you lift the rod, you will either lift it empty or hang a piece of meat or the mouth ring in the fish's mouth. What is particularly bad is that the fish will be unhooked in the nest or the fish will be lifted up to the surface and fall back into the nest, which will scare away other fish in the nest and cause no fish to come to the nest for a long time. The correct time to lift the rod should be the moment when the crucian carp has swallowed the bait hook into its mouth and has not spit it out. The float is moving from fast to slow and almost stops. Lift the rod immediately, and the rate of catching fish will be high. Otherwise, there will be more failures than successes. In addition, it should be noted that: if the rod tip is hard, the rod should be lifted slightly; if the rod tip is soft, the rod should be lifted slightly. When using meat bait earthworms, it is better to lift the rod later; when using vegetarian bait pasta, it is better to lift the rod earlier. In winter and early spring, it is better to lift the rod earlier; after entering April and May, it can be lifted later. When using soft brain line or long brain line, the rod should be lifted earlier; when using hard brain line or short brain line, the rod should be lifted later. ... In short, lifting the rod seems simple, but how to grasp the degree and timing in actual fishing is very knowledgeable. If you are careless and don't care, it will result in "the crucian carp bites the hook frequently, but not many fish are caught".

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3. How to eliminate internal and external parasites of cattle?

1. Prevention and control of parasitic diseases in cattle

(1) Elimination of Fasciola

1) Nitrochlorophenol (Bayer 9015): This drug is available in three types: powder, tablets, and injections. The first two drugs can be administered orally or put in feed. The dosage for administration is based on the weight of the fattening cattle (3-4 mg per 1000 g), and the dosage for injection is 0.5-1 mg (per kilogram of body weight). Injection is convenient and accurate for deworming. In case of poisoning, inject glucose solution, or take the cattle to a cool place and spray them with cool water.

2) Carbon tetrachloride: Inject 3-5 ml per 100 kg body weight. Mix carbon tetrachloride and an equal amount of liquid paraffin, and inject deep into the muscle. In case of poisoning, inject 5% calcium chloride intravenously, 80-100 ml at a time.

(2) Strongyloides can be eliminated by using thiabendazole, 8 mg per kg body weight, dissolved in water and administered orally; or a 5% injection solution can be prepared with sterile saline and injected intramuscularly.

(3) Expulsion of tapeworms: ① Use 40-60 mg of dichlorophen thiocarb per kilogram of body weight and mix it in the feed (mix evenly); ② Use 60-70 mg of chloranil per kilogram of body weight and place the medicine at the root of the cow's tongue, and let the cow swallow it by itself.

(4) Eradication of Theileria: ① Bernier, 3.5-7.0 mg per kg body weight, prepared into a 7% solution, injected intramuscularly for 3 consecutive days; ② Acapulin, 1 mg per kg body weight, prepared into a 1%-2% solution with normal saline, injected subcutaneously; ③ Flavin, 3-4 mg per kg body weight, prepared into a 0.5%-1% solution with normal saline, injected intravenously; ④ Imidazole dipropionate, 3 mg per kg body weight for prevention, injected subcutaneously; 1.2 mg per kg body weight for treatment.

(5) Elimination of cattle hide fly maggots ① Fenthion, 7-10 mg per kg body weight, intramuscular injection; or 2% concentration liquid, 100 ml for 200-400 kg; 125 ml for more than 400 kg, sprinkle on the skin of the entire back of the cattle from the shoulder to the base of the tail. Atropine can be used for detoxification in case of poisoning. It is better to use the medicine in September every year. ② Trichlorfon, prepare a 2% concentration liquid and apply it to the back skin of the cattle. It is best to apply it for 3-5 minutes and use it once every 25-30 days; prepare a 10%-15% trichlorfon solution, 0.1-0.2 ml per kg body weight, intramuscular injection. ③ Fly killer, the active period of cattle hide fly maggots is from April to June every year. During this time, fly killer is sprayed on the back skin of cattle, and sprayed once every 5-6 days. ④ Coumaphos, 4 mg per kilogram of body weight, prepared into 15% acetone solution, injected intramuscularly into the buttocks of cattle.

2. Prevention and treatment of external parasites in cattle

(1) Scabies

① Medicinal bath or shower: Use lindane emulsifiable concentrate, chlordimeform or new miticides on the market to prepare a liquid for medicated bath or shower. ② Subcutaneous injection: Use ivermectin, 200 micrograms per kilogram of body weight.

(2) Ixodes

Tick ​​killers include dichlorvos (1% concentration) and coumaphos solution (0.05% concentration), which can be sprayed on the skin of cattle or rubbed and brushed on the cattle body.

3. Precautions for deworming

① Newly purchased cattle must be dewormed 10 to 15 days after entering the fattening farm; ② Detoxification drugs must be prepared before deworming; ③ When deworming a large group, a small group experiment should be carried out to prevent poisoning of a large group of cattle; ④ Within 2 to 5 hours after deworming, there must be a dedicated person on duty to observe the cattle. Once poisoning is found, detoxification should be carried out immediately; ⑤ Cow dung after deworming should be piled up and fermented before it can be used as farm fertilizer; ⑥ Before using the anthelmintic, you must carefully read the instructions for use of the anthelmintic and use the medicine according to the instructions.