Breeding techniques for fine boars
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When selecting boar species boars, they are usually around 4 months old. Eyes should look great, skins have thin luster, smooth coat color, strong physique, open forequarters, full hind legs, strong limbs, and strong hoof quality. The hoof cracks, the normal limbs, the testicle size, the male characteristics of the small boar. Suitable for the majority of rural breeding species are Duroc, Yorkshire, Landing, Pidou binary boar.
In addition, when purchasing boars, they should obtain the “Plant Breeding Certificateâ€, “Quarantine Certificateâ€, “Producing Boar Appearance Certificate†and the boar pedigree card, etc., and at the same time, understand the boar prevention situation. In order to reduce the stress of refueling, it is better to ask the seller for a feed for boars.
Feeding and managing boars
1. The body condition of fine boars is "not fat or thin," and it is necessary to pay attention to the nutrition of the feed, so as to keep it strong and strong and have a strong sexual desire throughout the year.
2. Feeding level and ration preparation: In order to save the cost, the feed supply method can be mainly supplemented with concentrated feed and high-quality green feed. Each kilogram diet of boar concentrate should contain crude protein of 14%-15%, digestive energy of about 3000 megacalories, and should contain sufficient trace elements such as calcium, phosphorus, salt and zinc, and rich in vitamins A, D, E and so on.
Farmers should also pay attention to the following points when preparing boar food:
1 The feed should not contain cotton aphid that hinders the development of the boar's libido and unqualified raw materials such as high-fluorine calcium hydrogen phosphate.
2 Feed raw materials should be fresh and it is forbidden to use boars and deteriorating raw materials to prepare boar feed.
3 It is best to prepare boar diets without fattening pig concentrates to avoid damage to boar gonads.
4 With the promotion of premixing technology in rural areas, farmers can purchase 4% premixed boar for the preparation of boars. Green materials suitable for use in rural boars include summer and autumn cool leeks, sweet potato vines, European chicory, grain pods, ryegrass in winter and spring, and cabbage.
3. Feeding method: In order to prevent the “grass-bellied belly†phenomenon, it is recommended to supply about 2 kg of high-quality fine material for boars and 3 kg of green material each day during the non-breeding period; it is advisable to feed more concentrates during the breeding period and feed less. Some green material, avoid feeding thin soup.
4. Appropriate exercise: Appropriate exercise can increase the metabolism of boars, increase their physical fitness and improve their semen quality. At the same time, proper exercise can also exercise the boar's limbs. Therefore, after purchasing a boar, in summer or in the evening, someone should be allowed to follow the boar in the morning to allow the boar to self-propel and winter at noon. At the same time, it is necessary to carefully adjust the way the boar crosses the river, crosses the bridge, and crosses the highway. During exercise, boars should be prevented from slipping and damaging their limbs and feet. Do not allow boars to eat into all kinds of dead animals and steal vegetables that have just been sprayed with pesticides to avoid poisoning.
5. Breeding boars on a single lap cannot be accompanied with sows kept in a pig house. Because of the smell and sound of the sow, it is easy to cause boar abnormal behavior.
Using good boars
1. The farmer raises the boar mainly uses the direct match, in order to prevent the body weight to cause the match to use the period not to be long, generally may begin to begin the match with 7-8 months old. However, for first-time boars, the weekly breeding should not exceed 4 days, and in order to meet the boar nutritional requirements, it is best to feed boars with 2 boiled eggs on the day of breeding.
2. Due to the uneven size of the sows kept by farmers, artificial breeding can be used to protect the boar. Smaller sow individuals can be bred using a breeding rack or by lifting the boar's forelegs manually. The sow individual's larger available topographical advantage is the sow's low potential, the boar's high standing position, or the way in which the boar's rear buttocks are held by humans. In addition, the penis of the boar should be inserted into the vagina manually during the breeding.
3. When each boar breeds, it should be slippery, prevent dead rats and dead animals.
Common problems and countermeasures
1. Hematuria. If boars are prematurely bred or the penis is damaged, stop the breeding immediately, intramuscular injection of anti-inflammatory drugs or VK3 and other hemostatic drugs, and maintain genital hygiene to prevent secondary infection.
2. Low sexual desire. Can be subcutaneously or intramuscularly injected with 30-50 mg of methyltestosterone.
3. Repeatedly not matched. It is best to check the boar semen to see if the boar is ill or if the feed is unfit.
Boar health care
1. Routine immunization against swine fever, streptococcus and Danqing Pneumococcal vaccine according to the local epidemic situation.
2. The Japanese encephalitis vaccine will be vaccinated one month before the arrival of mosquitoes and the parvovirus vaccine will be administered one month before the breeding of the reserve boar.
3. Each year, the parasites in the body of the boar are killed and subcutaneously injected with ivermectin.
4. Do a good job in pig house cleaning, summer heatstroke, winter cold, give the boar a comfortable living environment.
Laohekou City, Hubei Province Yongfeng Farm