Page 3 of articles about prolificacy

Factors for improving reproductive performance of sows and herd productivity in commercial breeding herds

We review critical factors associated with reproductive performance of female breeding pigs, their lifetime performance and herd productivity in commercial herds. The factors include both sow-level and herd-level factors.

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Press releases

Catering for hyperprolificacy

Hyperprolific sows often do not perform as well in Asia as they do elsewhere in the world and this one day conference, Performance2017, was convened to try to find why this was the case.

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Graph 3: Average number of stillborn piglets according to parity for litters of less than 13, between 13 and 16 or more than 16 Total Born piglets. Analysis of 93.896 farrowings from hyperprolific sows recorded from October 14 to September 16

Genetics-ReproductionArticle

Hyperprolific? Yes, but not so much

Sows with more than 16 piglets Total Born (TB) per litter have twice as many stillbirths (SB) as those with 13 to 16 TB litters, and three times more SB than sows farrowing litters smaller than 13 TB.

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Genetics-ReproductionAbstract

Using first and second parity number born alive information to estimate later reproductive performance in sows

Early parity number born alive classification effectively predicts later parity performance. Sows classified as high in both parity one and in parity two had larger litters in later parities.

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Genetics-ReproductionAbstract

Relationships between ovulation rate and embryonic and placental characteristics in multiparous sows at 35 days of pregnancy

A high avulation rate results in an moderate increase in the number of vital embryos at day 35 of pregnancy, but compromises development in the surviving embryonic/placental units, suggesting that the future growth and survival of the embryos might be further compromised.

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The milk supplement does not replace the dam's milk, but supplements it.

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ManagementArticle

Management interventions for large litters: Economic assessment

Milk supplementation shows much higher growth rates in the fattening stage, so its implementation would be interesting to regain body condition in animals with low birth weight.

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ManagementArticle

Foster sows, how to make them?

If we decide to use foster sows to wean the "extra" piglets farrowed by hyper-prolific sows, we must decide which system is best suited to our farm and our management conditions.

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Genetics-ReproductionAbstract

The use of oxytocin in liquid semen doses to reduce seasonal fluctuations in the reproductive performance of sows

On the basis of the presented results, it should be noted that the use of oxytocin into insemination doses improves the farrowing rate and other parameters of the reproductive performance of sows.

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ManagementArticle

Watch for the monitoring of farrowings

This watch has three circles: the blue one represents the hours, the green one the liveborn piglets, and the red one the stillborn piglets.

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ManagementArticle

At what age and weight should we inseminate our gilts?

20 years ago we inseminated gilts when too small, then we inseminated them when too heavy, and now we are returning to an intermediate weight.

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News

Evolution of the numerical productivity during the last decades

France has been, continuously, the country with the highest productivity in comparison with Spain and The Netherlands, reaching 28.70 weaned piglets per sow and year in 2013.

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