How should breeding pigs be culled? Master these standards and methods
How should breeding pigs be culled?
(Agricultural Wealth Network) How should breeding pigs be culled?
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If a sow's empty period is too long, the cost of the empty period is very high; for the loss calculation, see "Looking at Pig Production from the Economic Evaluation of Sows" on page 6 of this issue. From this it can be seen that each day a sow remains empty is equivalent to a loss of 11 yuan in income.
This also shows the importance of improving sow reproductive performance and increasing economic benefits by reducing the number of empty days.
Normal pig farm: sows produce 2.2 litters per year, with more than 10 live piglets per litter, and each boar should be guaranteed to service 20-30 sows. If a pig farm does not reach the above indicators, it is very likely that quite a few ineffective boars and sows are being kept.
Ineffective boars and sows mainly include the following: sows that do not come into estrus for a long time; sows that return to estrus repeatedly after repeated matings; sows with habitual abortion; sows that are kept in the gestation barn but do not show return to estrus;
sows with small litter size or poor lactation performance; boars that cannot be used due to limb and hoof disease; boars used at a very low frequency; boars with poor semen quality and low conception rate after mating, etc.
Keeping these boars and sows wastes manpower, wastes feed, wastes pens, and so on, so they should be culled in a timely manner.
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If a sow's empty period is too long, the cost of the empty period is very high; for the loss calculation, see "Looking at Pig Production from the Economic Evaluation of Sows" on page 6 of this issue. From this it can be seen that each day a sow remains empty is equivalent to a loss of 11 yuan in income.
This also shows the importance of improving sow reproductive performance and increasing economic benefits by reducing the number of empty days.
Normal pig farm: sows produce 2.2 litters per year, with more than 10 live piglets per litter, and each boar should be guaranteed to service 20-30 sows. If a pig farm does not reach the above indicators, it is very likely that quite a few ineffective boars and sows are being kept.
Ineffective boars and sows mainly include the following: sows that do not come into estrus for a long time; sows that return to estrus repeatedly after repeated matings; sows with habitual abortion; sows that are kept in the gestation barn but do not show return to estrus;
sows with small litter size or poor lactation performance; boars that cannot be used due to limb and hoof disease; boars used at a very low frequency; boars with poor semen quality and low conception rate after mating, etc.
Keeping these boars and sows wastes manpower, wastes feed, wastes pens, and so on, so they should be culled in a timely manner.