Sow high-tech measures
Core Tip: Sow productivity is the key to determining the economic benefits of pig farms. Therefore, how to improve the productivity of sows has become an important research topic for the majority of livestock workers. The following measures are the author's practical experience, which are summarized below for reference.
Sow farm productivity is the key determinant of economic efficiency, so how to improve the productivity of sows has become an important research topic in the majority of animal husbandry workers, the following measures are the author's practical experience, are summarized below for reference.
First, the ideal age structure
The sow herd with ideal age structure is: 1-2 female sows account for 30%-35% of the total production sow herd, 3-7 female sows account for 55%-60%, and 8 or more female sows account for 5%- 10%, the specific sow ratio of each farm should be determined according to the actual situation of the economy and environment of the field.
How to ensure the formation of the ideal sow population? Generally take the "abandonment and subsistence", that is, to eliminate the sows with low production performance, such as: sows that fail three times, and three consecutive estruss after weaning are not estrus Sows with poor maternality, low litter size, severe obstetric diseases, and sows that are seriously ill and unable to produce normally; “complementing excellentâ€, supplementing the appearance on the basis of eliminating bad sows, conforming to breed characteristics and body type Beautiful, strong limbs, effective nipples 6 pairs or more, the vulva is slightly down, there is no genetic defect, the estrus has passed 2 times of gilts.
Second, good feeding management
1. The gilts are free to eat and drink in the early stage. When entering the breeding house, they will limit their food every day. The wet materials will be fed twice a day, and the total amount will be 80% of the food limit, while ensuring sufficient and clean drinking water.
2, pregnant sow
A, breeding
Pre-term food: generally 2 kg per day, fed once in the morning and afternoon, and often fed green fodder.
B, management
a, pay attention to the fetus, can not violently drive or beat pregnant sows; b, can be raised in small groups in the early stage of pregnancy, later need to raise a single column, often flush the pig body, especially to keep the vulva and nipple clean; c, to ensure that the pig The nutritional supply, the amount of exercise in the middle and late pregnancy, stop exercising a few days before the birth.
3. Lactating sows
A, breeding
Feeding at the beginning of the postpartum period, feeding less on the day of delivery, ensuring adequate drinking water, feeding a small amount of bran syrup, so as to avoid constipation of the sow, starting from the first day of childbirth, to increase the amount of 1 kg per day until it increases to 8 kg, and thereafter maintain This amount is up to the peak of lactation, about 21 days after delivery. Throughout the lactation period, it is required to add baking soda to the feed of the sow to prevent the piglet from being white, and to reduce the pre-weaning work of the lactating sow to prevent mastitis.
B, management
a. Prepare the delivery room 5 to 10 days before the sow's prenatal period. Wash the pig body, especially the pig's breast and pussy before birth; b, protect the nipple and breast, if there is damage, timely treatment; c, do a good job in pig fostering To ensure that each sow has no more than 10 heads.
Third, higher breeding efficiency
1. Reasonable use of boars
Generally, adult boars are used 3-4 times/week, and young boars are 2-3 times/week to ensure that pigs have sufficient nutrient supply and give pigs 2 hours of outdoor exercise every day. Regular inspection of boar semen every half month is guaranteed. The vigor used in breeding is above 0. 7 and the density is more than 200 million per ml. The breeding method is mainly based on artificial insemination, supplemented by the original.
2, timely breeding
The first-time sows are usually bred at the third estrus, and on the last day of estrus, when observing the estrus sows from redness to reddish, and there is still a small amount of fluid outflow.
3. Sows
Weaning should be done early to ensure that the sows after weaning have sufficient exercise, adequate nutrition, aphrodisiac supplements, and neighboring boars to stimulate estrus. For sows with estrus, timely breeding should be carried out. When observing sows, the males are red and swollen, emotionally disturbed, and there are other pigs crawling in the same column and the hands are pressed against the pig's waist.
4, pregnancy identification and rehabilitation test
The sows need to conduct a routine pregnancy test about 30 days after breeding to identify the pseudo-pregnant sows for treatment. At the same time, the breeder must carefully observe the vulva and behavioral performance of the sows, especially after 21 days of breeding. And sows in two episodes, such as 42-day-old, in order to detect recurrent sows in time for reassortment.
Diamond Saw Blades,Diamond Cutting Saw Blade,Diamond Tile Saw Blades
Diamond Saw Blades Co., Ltd. , http://www.nssawblade.com