FLEXIBLE DUODENAL MONOCANNULA OF THE NATIONAL AGRICULTURAL AND FOOD CENTRE DESIGN FOR THE DETERMINATION OF INTESTINAL NUTRIENT DIGESTIBILITY IN CATTLE
DOI:
https://doi.org/10.36547/sjas.897Keywords:
flexible monocannula, duodenum, mobile bag method, cattle, IP protectionAbstract
Research in physiology of ruminant nutrition using the in sacco and mobile bag methods and developing and testing of a duodenal cannula of our own construction including our own surgical application in cattle, led to the intellectual property protection. The duodenal monocannula for determination of nutrient intestinal digestibility in cattle, designed by the National Agricultural and Food Centre (NPPC, Slovak Republic), has been registered by European Union intellectual property office, as a Registered Community Design. The innovativeness of the technical design of the "NPPC cannula" lies in the fact that the cannula is made of one piece of a straight tube with an inner diameter of 22 mm. The tube is smooth, with no additional extensions and glued parts. The operation does not require ligation of the bowel with an arterial prosthesis or a polyurethane felt. The dimensions of the cannula allow the use of the mobile bag method without any problems. The vinyl chloride emulsion was designed to polymerize at the lower temperature, than has been currently used in this procedure (130 °C), and the end used for fixation in the intestine could be shaped after immersion in warm water. During the growth of the animals, the tube length can be prolonged to adapt to the duodenal size. As a result, the life of cannulated animals can be extended without age limitation.
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Copyright (c) 2022 Matus Rajsky, Juraj Szakács, Zuzana Formelová, Zuzana Mlyneková
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