The selection of boars generally requires squinty eyes, rare coats with thin luster, strong physique, wide open body, wide hind legs, strong limbs, firm footed mass, uniform testicle size, symmetrical symmetry, and obvious male characteristics. Currently used varieties are Changbai, Yorkshire and Duroc. Purchased boars should be purchased in specialized breeding farms without epidemics, and must obtain certificates such as "Plant Breeding Certificate," "Quarantine Certificate," "Pig Swine Appellation Certificate," and purchase invoices.
Keeping good boars
What is more, the general requirement for boars is “not to be fat or thin.†When raising boars, they must pay attention to their nutritional status, keep them healthy and strong all year round, and have a strong sexual desire.
Boar fat, libido will weaken or even no sexual desire, resulting in decreased ability to breed. This situation is mostly due to a single feed, too much energy feed, and insufficient feed for protein, minerals, and vitamins. Energy feeds should be reduced in time, protein feeds and green succulent feeds should be added and exercise must be enhanced. Boars are thin, with reduced precision, and poor semen quality, resulting in low conception rates for sows. This situation is mostly caused by malnutrition or excessive breeding. Feeds should be adjusted to enhance nutrition and reduce the number of matings so that they can resume their physical fitness.
The boar diet should be mainly concentrated material, limited feeding, appropriate amount of green feed, less feed high energy feed, to prevent breeding pigs fat. But you can't feed too much roughage, so as not to stretch the belly and prevent mating. The composition of the diet should be kept more than 3 kinds, and the protein content should not be lower than 16%. Animal feeds such as silkworm cocoons and fishmeal should be properly fed, beans, cakes and big wheat are good feeds for feeding boars, high Energy feeds such as corn and rice bran should not be fed in large quantities. In the season of breeding, small fish or eggs should also be properly fed to improve semen quality.
Appropriate exercise can increase the metabolism of boars, promote appetite, enhance physical fitness and improve semen quality. Always comb the skin to keep the skin clean and have a preventive effect on the skin.
Use good boar
Breeding can be divided into natural mating and artificial insemination. Artificial insemination is an advanced breeding technology widely promoted at present. It can overcome the contradiction that male and female pigs that can't be overcome can not be directly mated due to disparities in size, so that far apart male and female pigs can be bred in time to prevent diseases, especially The spread of reproductive tract diseases can also extend the useful life of male boars. When breeding, attention should be paid to the following issues: 1. Suitable age and weight for starting breeding are generally required to be used when boars are aged from 10 months to 12 months of age and have a weight of 80 kg to 100 kg. Farmers raising boars should use this method of communication and should not be used prematurely, and should not be over-used. 2. All serious sows that have the same or different shortcomings, as well as unhealthy sows and sows, cannot mate with one another. 3. Old male and female pigs should not be mated with each Other. Because of their weakened viability, physiological functions decline. If they are allocated to each other, they will not only have fewer litters, but also will have difficulty in getting good offspring. 4. Avoid inbreeding. Generally, male and female pigs that have no or at least no blood relationship within four generations are selected for mating. If the inbreds are mated, they often produce offspring with poor constitution, weak disease resistance and slow growth, and even produce congenital varieties of degradation. 5. The best breeding time is 2 hours before and after feeding in the morning. After walking or strenuous exercise for a long time, they should rest after half an hour of rest; after the breeding, they should take a rest for half an hour and then drive away; before and after mating, it is necessary to prevent bathing or rain. 6. Ensure that you are driving safely on the way. Prevent fall injuries, in particular to prevent damage to the hooves; prevent theft of vegetables and various dead animals that have just been sprayed with pesticides.
Do a good job of preventing and controlling diseases
First of all, we must do a good job of two vaccination spring and autumn, and pay attention to check the quality of the vaccine, pay attention to the replacement of injection needles. Keep the pens clean and sanitize the inside and outside of the pig bar regularly. Always observe the health status of breeding pigs and find the disease. Consult a veterinarian early on.
The selection of boars generally requires squinty eyes, rare coats with thin luster, strong physique, wide open body, wide hind legs, strong limbs, firm footed mass, uniform testicle size, symmetrical symmetry, and obvious male characteristics. Currently used varieties are Changbai, Yorkshire and Duroc. Purchased boars should be purchased in specialized breeding farms without epidemics, and must obtain certificates such as "Plant Breeding Certificate," "Quarantine Certificate," "Pig Swine Appellation Certificate," and purchase invoices.
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