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stand for Water Insoluble Nitrogen and Water Soluble Nitrogen , respectively . One way of increasing provision with no increased budget has been by making more use of internal expertise , however it has become clear that whilst doing this we also need to improve the presentation and group-work skills of internal tutors if quality is not to suffer . It is during this weaning and transition phase that feeder calves seem most susceptible to respiratory disease , commonly referred to as " shipping fever . In addition , paint surfaces received only minimal preparation , generally washing with water , before applying green CARC .