Canadian researchers used 80 single-young yorkshire pigs (54.1+-2.9Kg) to test the effect of daily particle size on the prevalence and severity of gastric ulcer. These pigs were free to eat corn-wheat diets that were ground (particle size 578 + - 1.89 μm) for 25 weeks. Endoscopic examination of all pig ulcers was assessed to 0-3 grades, 0 = normal, 1 = parakeratosis, 2 = moderate ulcer, 3 = severe ulcer. In order to equally reflect each ulcer score, 48 pigs were selected and fed a 7-week diet for a second endoscopy, and then the severity of the ulcer was determined. After that, the pigs were fed a 3-week fine diet or a coarse diet (937+-2.19 μm), and then the endoscopic examination of the effect of the coarse diet on the severity of the ulcer.
Growth performance was monitored throughout the experiment. According to netizens, the feed intake and feed conversion rate were known. The severity of ulceration was accompanied by a decrease in mean daily weight gain linearity (P<0.05). When feeding a fine diet is a possible cause of ulcers, changing the diet from a fine particle to a coarse diet is a method of controlling gastric ulcer in a short period of time.
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