Winter sow management methods
After entering the winter, the gradual decrease in temperature will have a great influence on the growth and breeding of sows. The rearing and management of sows during weaning to breeding determines the reproductive performance at later stages. The pig farms at this stage should strengthen their day-to-day management and pay attention to feed nutrition and disease prevention. This issue introduces a group of winter sow management methods for farmers' reference.
Breeding management
During the first 2 days after weaning, the sow-boar contact time should be controlled. After 3 days from the start of breeding to the day of breeding, the seizure boars were exposed for at least 20 minutes each day, and morning and evening were stimulated 2 times to induce estrus. When estrus sow is mated, the use of seducing boar mouth-to-mouth stimulation can promote the ovulation of sows and increase the fertility rate of gilts.
Every morning and afternoon, an estrus identification is performed. The inspection can be combined with the method of artificially checking the situation with the boar. When the sow is in heat, she often walks around in the circle, frequently urinates, nervousness, loss of appetite, decreased daily intake, and increased drinking water. The static reflection on the back of the sow is obvious. Both ears stand upright, and the back stands up. Crawling across each other and receiving a boar cross, its vulva red and swollen, vaginal mucus secretions, check the genitals with the thumb, there is a warm feeling and sticky sex.
At this time, breeding can be carried out. It should be carried out in the morning and at night. Each estrus should be accompanied by 2 or 3 times and the breeding interval should be 8 to 12 hours. In order to improve the conception rate and the number of litters, repeated breedings may be adopted. In the morning, the static reflection is found in the morning and once in the morning, once in the afternoon, and once in the afternoon, and once in the morning on the second day. In the afternoon, the static reflection is found in the afternoon on the same day. It will be planted once a day and once in the afternoon. The sperm motility must be 0.7 or more, 80 ml per head semen, and 3 billion sperms.
Disease prevention and control
Reproductive disorders have a significant impact on the number of piglets that can be fed to sows and are directly related to the benefits of the farm. Normal sows after weaning and raising 5 to 7 days can be normal heat, and the pregnancy rate after mating is high, up to 90%. Sow stillbirth abortion, estrus after mating, resulting in early abortion or not match; a litter production of more than 14, more than the normal standards, easy to cause piglets easy nutrient deficiency; a litter producing weak, mummy, stillbirth and deformity The total number of fetuses exceeds 1.5 on average, and it is generally recognized that sows suffer from reproductive disorders. It is recommended that they be carefully inspected and quarantined on weak ones.
There are many reasons for reproductive problems. One is viral infection, mainly pseudorabies, blue ear disease, and parvoviruses. Prevention of PRRS focuses on the domestication of gilts, and group swaps after 90 days. Pseudorabies is controlled by vaccines and sufficient immunity can be given.
The second problem is feed. Most of the early abortions are related to moldy feed, and should be checked from the source to prevent moldy feed and resolutely eliminate the use of moldy feeds to feed sows.
Third, due to stress, it is necessary to strengthen feeding management and reduce stress. Transmigration time should be set before the test, and it is strictly forbidden to switch to the group within one week after breeding. At this time, the transfer group will affect the implantation of the embryo, resulting in sympathy or reduced fertility rate. Sympathy or transfer to a group when pregnancy is confirmed.
In order to reduce unnecessary losses, the insemination and breeding sow should be cleaned up and eliminated in time: For sows that are still estrus-free after multiple rounds of mixing, hormone drugs are used for treatment. After 2 or 3 treatments are invalid, we recommend eliminating them. For sows that are still ineffective after weaning for more than 10 days after using feeds, swarms, or drug stimulation, they should be cleaned out; for those with mastitis, metritis, long-term estrus, repeated repeated infections, habitual abortion, etc. Pigs cleaned out. The method of clearing out the sow is to establish a sow card, the card goes with the pig, and the weaning date is marked on the card.
Culture environment
The pig house should be hygienically dry, suitable in temperature, good in air quality, reasonable in light, and free from snarls. Temperature is an important factor influencing aquaculture efficiency. The optimum growth temperature of sows is 18°C～23°C. However, the temperature in winter pig houses is generally lower than this range. Therefore, the pig house should be insulated. Doors and windows should be repaired to prevent air leakage. Conditional pig farms can use heating, infrared light bulbs and other heating, unconditional pig farms can be covered with plastic sheets, stoves and other insulation measures, so that the pigs to maintain a suitable ambient temperature. While strengthening the heat preservation measures of the pig house, we must also pay attention to strengthening the ventilation and prevent air pollution. To select ventilation when the temperature is high, ventilation should be generally selected from 10 am to 3 pm.
Sanitary hygiene is an important condition for ensuring good sows' body condition. Sweep the walkway and inner ring before feeding, and avoid flushing water onto the sow. Especially in the winter after the sudden drop in temperature to keep the pens dry, to minimize the number of red circles, sow feces to clean up 3 to 4 times a day, in order to reduce the ammonia content of pigs, feces cleaned up outside the house, the walkway inside The cement pavement outside the house should be cleaned at least once a day.
Feed adjustment
With the advent of winter, in order to achieve better aquaculture benefits, we must promptly adjust feed formulas and increase feed nutrition, with the emphasis on increasing energy feeds and increasing sow feed intake. Raise the proportion of corn in the feed (increase it to more than 60%) and add 1% vegetable oil to the condition.
Under normal conditions, the weaned sow needs 18% crude protein to supplement the lost weight during lactation, and the sow feed can continue to be used. Weaned sows are severely weight-loss and need to replenish their energy in order to restore physical fitness as soon as possible. At this time, lysine should be no less than 0.8%, no less than 225 mg/kg of biotin, and no less than 0.75% to 0.9% of total phosphorus. Not less than 0.5%. The feed must be fresh to prevent mold deterioration. Such as self-dosing, to supervise the quality of raw materials at any time, and the storage time can not exceed 2 weeks; such as feeding finished product pellets, we must supervise the quality of finished products in the process of transport whether it is caused by wet weather or poor storage conditions caused by mildew, and special Pay attention to the shelf life of the finished product. The feed exceeding the shelf life must not be used. The warehouse stacking code should be easily replaced with new ones. The amount of feed stored should not be too large, and the supply of fresh feed should be guaranteed.
Daily management
Sows need to properly control the feed supply in the first 3 days after weaning so that the sows can return to milk as soon as possible to reduce the incidence of sow mastitis. About 2 kg of fine material is given each day, and conditions permit to add 1 to 2 kg of green feed every day. According to the actual situation can be based on the needs of feeding, lactation during the lactation of poor sows, in the case of free eating causes sows to be over-fat, must be limited from the amount of feeding, so that as soon as possible to reach the middle of public opinion, as soon as possible estrus breeding; sows Lactating weight loss is serious, the need to increase the amount of feed, with short-term superior feeding method to make it as soon as possible to reach the middle of the public opinion, weaning sow to see slightly more prominent spine is appropriate to ensure adequate drinking water.
After 3 days of weaning, they can freely feed under normal conditions to achieve short-term excellent feeding. After the sows recover their body condition, they ovulate after estrus, and then enter the next breeding cycle after mating. However, the sows still have to be properly restricted to overweight and overweight. The sows are to supply supplements to reduce the losses caused by the abnormality of the sow and not the heat.
Batched sows that are polycultured after weaning can, to a certain extent, reduce the uneasiness caused by the sow mistress complex, and at the same time reduce the uncomfortable feeling of back pain, plus the interfering hormones between the weaned sows. It is relatively distracting and more conducive to heat. Should pay attention to reasonable grouping, grouping in groups with similar parity, body weight, and body condition, generally 4 to 6 heads per column, 15 to 20 heads per column, to ensure a minimum of 2 square meters of living space for each sow. The remaining pigs of the weaned sow after mating need to be combined and raised. When the temperature is low, they should be checked on a warm sunny day. After the screening, the remaining pigs should be rushed to the outdoor sports field and stocked for 1 to 2 hours. The big principle is to merge the loops. This way of changing venues can stimulate the estrus of weaned sows. Http://Content/c66abe6f-95ca-474e-afc0-61c2fe0f441f?cType=2
Metatron Hunter 4025:
Description and Field of Application
Purpose
The Metapathia-GR Hunter software can operate only with the telemetric nonlinear analysis data processing apparatus "Metatron" and its subsequent modifications. The telemetric nonlinear analysis data processing device is compatible with the IBM-type PCs and intended for studying reaction of a biological object to different types of the informational impact. "Metatron" allows correlating the measurement process with the process affecting it and performs the following.
Operations:
1) It measures J (0) which mirrors the change of the describing parameter, and the entropic potential relative to its ini- tial value;
2) It transforms continuous signal J (0) with the preset intervals of frequencies into a histogram (a row of numerical val-ues of scanned frequencies with serial numbers from 1.8 to 8.2 Hz.);
3) It sends the current W values to PC and displays the graph on the monitor simultaneously with its impact on the examinee.
4) It accumulates the W value in its memory unit, if observing the histogram is more convenient upon completion of the measurements;
5) It issues the scale-correlated commands required for regulating the effect on the examinee at testing;
6) It transmits the W values from the unit into PC memory upon completion of the measurements and saves them in unit memory of prior to the beginning of recording data of the next measurements.
Telemetric nonlinear analysis data processing apparatus "Metatron" (hereinafter "apparatus") can be used for non-linear analysis of biological structures and testing of biologically active supplements. The apparatus can also be used in research centers and scientific research facilities.
The apparatus is intended to register psychophysics changes in system and allows to:
- Get qualitative estimation of functional condition in a form of topical analysis.
- Control effectiveness and results of different ways of treatment.
- Analyze dynamics of functional condition changes over period of time.
- Determine initial nidus of functional breach.
- Estimate character of changes using expert systems.
- Estimate basic characteristics of bio-system homeostasis.
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