Here's an introduction to the management points of the reserve boar
First, feed and feeding amount
1, feed for boar special materials, if the field boar can be used less lactating sow material instead, the feed protein content of 17-18%, digestible energy in the 3200-3300 kcal / kg, the season can be appropriate to increase the temperature The content of amino acid and VE-VC was increased to improve boar's anti-stress ability and semen quality.
2. The amount of feeding should be between 2-3 kg. Please ensure that the drinking water is clean. The sensation is controlled by 1 point (based on the 5-point scale) of sows of the same age.
Second, the temperature
The optimal temperature for boar management is 15°C, suitable temperature is 15-20°C, relative humidity is 60-80%, testis temperature of boar should be 2~3°C lower than body temperature, if testicular temperature rises under high temperature It will lead to degeneration of the reproductive epithelium, impeded synthesis of androgens, impaired spermatozoa, reduced spermatogenesis and decreased semen quality; if the temperature exceeds 30°C, the semen quality of the boar will take 6-8 weeks to recover, thus It is necessary for the pigs to cool down during the summer and control the room temperature within 30°C.
Boar cooling measures
Since temperature has a great influence on the quality of boar semen, it is recommended to take effective cooling measures:
(1) Since the boar in the positioning column of the boar has a small space, it can use air-conditioning to cool down, and the cooling effect is obvious;
(2) The boars may have more boars or may be used in large farms to reduce the temperature. The circulating water must use groundwater to ensure that the room temperature is about 28 degrees;
(3) Some open boar buildings can use ceiling fan + spray, or build a 25cm high pool outside the boar, cover the outside with a shade net, so that the boar can lie in the pool cooling
Third, isolation and adaptation
Isolation and adaptation procedures are a necessary measure for pig farms to maintain their health, and they are increasingly accepted by everyone. This is particularly important when a negative-pig is introduced into a blue-ear disease-positive farm. Otherwise boars may occur. Azoospermia, dead sperm, thin semen.
1, isolated
The time of isolation in actual operation should not be less than 2 weeks, and 4 weeks is appropriate. If the original farm is positive for PRRS, it should be isolated for more than 8 weeks. After the isolation period is over, if the pig is normal, it will enter the adaptation period and it will continue until breeding.
2. Adaptation
1) Purpose: To make new breeder pigs adapt to the microbial environment of the original herd;
To balance the original pig population with the new breeder pigs in the microbiological environment;
2) Measures
1 Contact with the new boar in the first week of piglet feces;
2 In the second week, fresh boars (cutaways), birth clothing, and mummified ingredients in the delivery room are fed to the new boar;
3 In the third week, 30-40 kg of growing pigs should be placed next to the new boar at a ratio of 1:5-10.
4 Before the fourth week of acclimation until breeding, the eliminated male and female pigs will be placed adjacent to the new boar at a ratio of 1:20 (to prevent new boar injuries);
5 If serious adverse reactions occur, contact should be stopped immediately.
Fourth, immunity
Vaccine is one of the important measures to ensure the health of pigs. After the isolation period is completed, the type of vaccine injection may not be the same in every field, mainly based on the local epidemic situation and the geographical location of the farm, the strength of biological safety, and the herd The health condition decides.
1, swine fever: At least once before breeding;
2. Foot-and-Mouth Disease: once every 3-4 months;
3. JE: Although the maternal antibody of JE can last 150 days, the Boar testicles often appear in actual production. It is recommended that the Jise be injected as soon as possible after the boar arrives.
4. Pseudorabies: Two injections during the adaptation period;
5, parvovirus: 180 days of age, 210 days of injection twice;
6, blue ear disease: according to the actual situation to decide;
7. Pant: If the original farm is gasping for pneumonia, the pneumoconiosis-negative pig will be vaccinated 3-7 days after arrival and will be strengthened after 3 weeks.
Fifth, breeding intensity
1. Stage of 7-9 months of training: Collect sperm once a week;
2. Early breeding period 10-12 months: 1.5 sperm extractions per week;
3, mature more than 12 months of age: weekly sperm 2 times. Even if not every week must also be refined once (discard). In order to maintain the vitality of testicular sperm.
VI. Boar training
When the age of the reserve boar reaches 6-7 months, training can be started. Generally speaking, as long as the boars with a proper method are under 10 months old, more than 90% of the boars can be tuned successfully. Some people in the production think that boars are difficult to tune up. It is because of lack of patience. It does not talk to the boar, or there may be problems with the placement of sperm collection stations:
1. The boars should be raised in a single column, not polyculture, to prevent mutual climbing;
2, If the boar training age is too late, there will be the pay;
3. If the design is unreasonable and the counterfeit livestock are in the next room, the boar cannot see the process of other boars harvesting;
4. If the collection column is too large, it will distract the boar.
Method of tuning
1) Do not start training immediately after the boar is transferred to the GTC, and let it be familiar with the environment for 3-5 days before starting the training.
2) If it is an old farm, the new boar should be kept beside the fake Taiwanese and allowed to observe the process of picking other boars; if it is a new field, first adjust the boar that has strong sexual desire and is vulnerable to attack. After the success, they were kept in remote places, and the untrained boars were placed next to the fake table animals, allowing them to observe the process of picking other boars because the boar's pleasant expression after seeing the sperm boars was easy to imitate. Some do not climb at all without tuning;
3) Do not put anything around the counterfeit livestock so as not to distract the boar and try to keep the boar focused on the counterfeit livestock;
4) First, pick a good boar. The secretions left by the boar should not be cleaned. The pig's sense of smell is very sensitive, and the smell of the pig on the fake table animal will form a strong olfactory stimulus to the boar. Especially boar urine;
5) Adjust the height of the fake livestock. After the new boar enters the harvesting column, let it move for a few minutes. Use a wet towel (with boar secretions better) to lure the boar close to the fake table. Keep in touch with the boars and pat the counterfeit livestock by hand to focus their attention on the counterfeit livestock. If the boar bite the pseudo-tablet with his mouth, gently stroke his head and nose with his hand. During the whole process, he must continue to talk to the boar and say something praise. Then the boar may have to climb. If the boar does not panic after climbing, use the thighs to stop the hips from sliding down. After the boar has been twitched a few times, pull the penis with his left or right hand to pull out the penis (new Employees may use their eyes to look at the boar's penis at this time, making it difficult to grasp it, let alone using the right hand to operate on the right side, and the end of the penis after the boar has completely shot. After the boar comes down, you can stroke it, say something of praise, and drive it out after 1-2 minutes of activity;
6) If the new boar does not cross the counter at the first time, do not try to correct it. Beating the boar will only have the opposite effect, as long as the semen can be produced to produce a pleasant feeling. If it is only a little bit off, you can use the elbows to push it closer to the exact position.
7) When a new boar starts to adjust, he is generally afraid of people. It is very important to talk to the boar and let him feel trust in you. Otherwise, the tune cannot be successful. At this time, be patient. Do not cross the boar. And angry with the boar or hit it. Every boar training time is 15-20 minutes. If it is unsuccessful, wait for the next time. Because it is not interested in fake Taiwan animals, it will not only waste time, but may also affect the next training session.
8) Once the training is successful, it will be continuously refined in the next 3 days to consolidate its habits.
If the above method does not work, you can try the following method:
1 Adjust the height of the fake livestock: Use two railings to control the boar behind the counterfeit livestock. The boar can't go. People are tempting the boar on the side, and individual boars can be tuned successfully;
2 Spread the skin of a fat pig on the counterfeit livestock and sprinkle the urine or secretions of the boars to stimulate the boar visually and olfactoryly;
3 Take a piglet and beat it on the counterfeit livestock to make a call and individual boars will climb;
4 Choose a sow with particularly good hair and place it next to the harvesting column. Use pheromones to stimulate the boar so that it will increase its libido and induce it to climb.
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