Energy intake is the most critical factor in determining piglet survival during the first 3 days of life. Large litters are susceptible to higher mortality because of lower birth weight and increased competition over teats.
In the case of prolonged farrowings, it may be beneficial to massage the abdomen of the sow.
Problems during the farrowing process may have negative consequences for the further development of the piglets.
When piglets are born with yellow-greenish mucus (meconium) (see piglet on the right) and faecal particles on their skin (see piglet on the left), this is a sign of a prolonged farrowing process.
Phagocytes at work:
• A phagocyte attacks a bacterium and destroys it
• Important information required for the animal to express the appropriate immunological response is collected by the phagocyte
• The correct active immune response is induced
Phagocyte = a macrophage attacks bacteria
In hyperprolific sows with the potential to produce large litters, gestation length will typically last for 3 months, 3 weeks and 3 to 5 days. The more foetuses present, the less room there is for adhesion of the placenta of each individual pig to the uterine wall. To facilitate maximal embryonic development, it is important that the sow is optimally nourished prior to insemination. Also it is important to recognise and minimise stress factors such as fluctuations in environmental temperature, social stress such as fighting and exposure to toxins and infections e.g. PRRS. In hyperprolific sows particularly, these factors have significant negative impact on the forthcoming gestation.
Boehringer Ingelheim Vetmedica Inc., has selected four recipients of its annual Advancement in Porcine Reproductive and Respiratory Syndrome (PRRS) Research Awards.
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