Clinical case: Gilts not coming into heat
Since 2017 the number of gilts coming into heat (with standing reflex) has gradually fallen to levels less than 50-60% of the gilts ready to be inseminated...
Causes of seasonal abortions
What can I do if the abortion rate is greater than 2% and the abortions are concentrated around a specific time of year? How can I combat seasonal abortions?
Carcass disposal management for swine producers, a practical review (part 1)
Pros and cons of the most used carcass disposal systems: burial, composting, incineration, and rendering. Impacts on environment and biosecurity.
Anestrus in multiparous sows
When multiparous sows are affected, not as many need to be culled as in the case of gilts (which we saw in the last article). Generally sows will eventually show signs of heat, but with a considerable delay compared to a normal heat.
Abortions in mainly first parity sows
Why are there more abortions occurring in first parity sows?
Anestrus in gilts
Lack of estrus in gilts is a common cause for culling, which increases the need for gilts and the cost of gilts. Let's take a look a what causes anestrus:
Non-infectious causes of irregular returns to estrus in sows
This article lists the main non-infectious causes that can lead to irregular returns to estrus.
Parvovirus evolution: implication of the new strains
Porcine Parvovirus was thought to be genetically stable, but now we know that it exists in a variety of forms, raising fresh questions about its control in sow herds.
Causes of regular returns to estrus: the sow
This article covers the main sow-related factors that can cause regular returns to estrus.
Porcine parvovirus is changing: Implications
Pork producers and veterinarians need to be aware that the porcine parvovirus (PPV) has been evolving into new strains.
Causes of regular returns to estrus: the seminal dose or boar
This article covers the main semen- or boar-related factors that can cause regular returns to estrus.
Tiny doses of virus can cause African swine fever
Biosecurity and prevention measures must take into account that as low as 5 units of ASF virus are enough to produce infection.
Practical guidelines for oral fluids collection
What are the most common mistakes when using oral fluid? How to make the most of this diagnostic technique.
When are the returns happening?
Total returns to estrus should not exceed 8%; if they do, we must ask ourselves when they occur.
Internal Biosecurity: McREBEL and beyond!!
In this series of articles about internal biosecurity we will review McRebel and other strategies that we perform to control the movement of pathogens within the farm as we complete our daily work
Does the rapid ASF test offer any advantages?
Will a faster diagnosis make a significant difference in the fight against African swine fever?
Should we be worried about PCV-3?
We are finding more evidence of the possible role PCV-3 plays in certain reproductive problems.
Assessment of truck cleaning and disinfection: Microbiological validation and ATP detection
This second article on the assessment of truck cleaning and disinfection describes how to carry out and evaluate the results of microbiological validation and adenosine triphosphate detection.
Low farrowing rate troubleshooter
Why is my farrowing rate less than ideal? Use this tool to discover the potential causes. Navigate using the flowchart or use the buttons within the text to access the different parts of the tool.
Are there sows returning to estrus?
If I see a farrowing rate less than 85%, the next question I should ask is, "Are there sows returning to estrus?"
PCV-2d, PCV-2b, PCV-2a. How important are the differences between genotypes for veterinarians?
Serious problems occurred much less frequently with genotype a than with genotype b. Why did the frequency of these genotypes change?
Causes of early returns to estrus
Why do my sows come into heat soon after service?
Causes of regular returns to estrus
Factors related to the semen dose, the boar, or the sow can cause regular returns to estrus.
Causes of irregular returns to estrus
There are several factors that can cause an abnormally long estrous cycle.
Irregular returns: infectious causes
This article lists the main infectious causes that can lead to irregular returns to estrus.
Are there abortions?
If my farrowing rate is less than 85% but my total returns to estrus are normal, the next step is to review abortions.
Are there a greater number of abortions happening in a certain parity?
The abortion rate among serviced sows should always be less than 2%. If it is greater, we must investigate at what point the abortions are occurring.
Abortions distributed evenly among all parities
If the abortion rate is higher than 2% and abortions are not concentrated around any particular group of sows, we should ask ourselves a few questions.
Assessment of cleaning and disinfection of pig transport vehicles: Visual inspection
What are the most important points to include when auditing the cleaning and disinfection of a truck that has transported pigs? In this article we focus on visual inspection.
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