Abstract
Large animal models allow for collection of substantial amounts of biological material. However, the collection of larger volumes (>100 ml) of blood from pigs can be a challenge: (i) the peripheral veins are not suitable for collection of high numbers of standard blood tubes as the veins tend to collapse; and (ii) the alternative option of cannulating deeper veins mandates surgical exposure of the vessels and often the need for heparinization, which is undesirable for some blood analysis. During an immunization trial in 40 pigs, we assessed the femoral and saphenous arteries as practical vessels for collecting 250 ml of blood from each pig in standard collection tubes without heparinization. Blood collected from the saphenous artery by a standard butterfly needle proved particularly useful and 250 ml blood could be collected successfully in 24 of 25 pigs by this approach.
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