HEAL ▶▶▶TH
Keeping long tails is only pos- sible when SINS is not found at farm level.
Necrosis and long tails do not go well together
BY JUDITH WANINGE, FREELANCE JOURNALIST, BOERDERIJ T
he Netherlands is heading for a tail-docking ban by 2030. As a result, the pig farming industry must find a way to be able to keep pigs with long tails. That is a challenge, as research shows that some form of
necrosis is present on virtually all farms. Attention to mycotoxins
Pigs are sensitive to mycotoxins. A number of mycotoxins can be reduced to acceptable amounts through a toxin binder, and piglet feeds contain higher quality raw mate- rials and fewer mycotoxins. The most feared mycotoxin that is difficult to bind is deoxynivalenol (DON). It has been shown that DON is passed on in the womb and via the colostrum of the sow to newborn piglets that still have very vulnerable intestines. Although maximum val- ues for mycotoxins apply in Europe for animal feed, Mir- jam Lechner believes that these values are far too high for current genetics. For companies that purchase or grow raw materials themselves, it is wise to be critical of myco- toxins. Do not grow CCM year after year on the same plot, and watch out for fungal hot spots.
Keeping long tails is only possible on farms that do not suffer from (ear or tail) necrosis, a phenomenon also known as SINS. This conclusion can be drawn with knowledge that is currently available.
Blood flow problem Necrosis, a form of tissue loss, can result from a local blood flow problem as a result from a leaky gut that allows endotox- ins to enter the bloodstream and cause excessive inflammato- ry responses and circulatory disorders. “Various stress factors can be the cause of this leakage: heat stress, a nutritional transition, but also an infection by, for example, PIA [porcine intestinal adenomatosis – also known as ileitis]. Additional changes in the intestinal microbiome can also trigger active (tail)biting by pen mates,” says Rutger Jansen of animal health company Boehringer Ingelheim. “All factors together can cause the bucket to overflow.” It’s not only pigs that are sensitive to this; in horses, for exam- ple, intestinal problems can lead to laminitis. In cattle, claw problems can arise because of subclinical rumen acidosis, also known by the abbreviation SARA (sub acute ruminal acidosis), which releases endotoxins into the bloodstream.
German research Veterinarian and geneticist Professor Dr Gerald Reiner, head
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