What is weaning to service interval?

The weaning-to-first-service interval is defined as the days that pass from the weaning of a sow and the first service after this weaning. Its calculation is easy: for a group of sows, it consists in dividing the sum of the weaning-to-first-service intervals in this group of sows by the number of sows in the group. 19 сент. 2013 г. The weaning-to-service interval is a short but important period for the productivity of the sow. Supervising the factors that have an influence on the wean to service length, including feeding has shown to be highly correlated to success in the farrowing unit and subsequent lifetime reproductive productivity. The weaning-to-service interval is a short but important period for the productivity of the sow. Supervising the factors that have an influence on the wean to service length, including feeding has shown to be highly correlated to success in the farrowing unit and subsequent lifetime reproductive productivity.To lower wean-to-first-service interval, newly weaned sows should be exposed to a boar on Day 1 and bred when found in heat. Weaned sows should receive extra feed from weaning until breeding.The weaning-to-first service interval is a key driver for improving farrowing rate and increasing litter sizes in subsequent litters. Heat stress is one of the factors that is known to have a significant impact on weaning-to-first service intervals.



What is the time interval from weaning to service?

Wean to service intervalTarget # sows6 to 7 days*257 to 21 days2.522 to 30 days0.531 plus days0

What is weaning in pigs?

The stage that comes after lactation (after the weaning event), in which the piglets are taken away from their dam and normally proceed to eat only solid food (compound feed) and water. It normally lasts 7-8 weeks and the piglets can grow approximately 20-25 kg during this stage.

How long after weaning does a sow come into heat?

Weaning age.

Most sows weaned at 18+ days after farrowing should be in heat within 4-6 days after weaning, on average.

What is dry sow?

Dry sows: adult female pigs from weaning (separation from piglets) until farrowing. They are called ‘dry’ because they are not producing milk to suckle piglets. 3. Farrowing sows: adult female pigs from farrowing until weaning.

Why is it called farrowing?

To produce a litter of pigs. [Ultimately from Old English fearh, pig; see porko- in Indo-European roots.]

How do you bring a sow to heat?

Induction is a procedure used to advance estrus. Physical exposure using an intact or vasectomized boar provides the full range of stimuli. Hormonal injection in prepubertal gilts and sows with a combination also induces rapid follicle growth and estrus in 4 to 5 days.

What is weaning-to-service interval?

The weaning-to-service interval is a short but important period for the productivity of the sow. Supervising the factors that have an influence on the wean to service length, including feeding has shown to be highly correlated to success in the farrowing unit and subsequent lifetime reproductive productivity.

How to reduce WEAN-to-first service interval in weaning sows?

Suggestions for reducing wean-to-first service interval: Weaning age. As weaning age increases, days to cycle should decline. Feed intake. This may be the biggest factor affecting sows’ returns to heat. Water intake. Water is the forgotten nutrient. Parity of weaned sows.

What is WEAN-to-first service interval?

Wean-to-first service interval is a key driver for improving farrowing rate and increasing litter sizes of the subsequent litters. The sooner a weaned female returns to heat, the more fertile she is and the more eggs she will shed, thus improving litter size. Suggestions for reducing wean-to-first service interval:

When do weaning sows go into heat?

Chart 2 and Table 1 show some sows start cycling soon after weaning. Farms weaning at 18+ days will have 1-4% of weaned sows in heat by Day 3. These might be nurse sows, sows in good body condition, sows that have had pigs weaned early, or sows with older pigs.

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