How to prevent piglet diarrhea? Increasing feed nutrition is key (4)
Preventing piglet diarrhea by increasing feed nutrition (4)
Zinc promotes the rapid regeneration of taste bud cells in the tongue mucosa, enhances appetite, inhibits certain harmful bacteria in the intestinal tract, and prolongs the retention time of food in the digestive tract. Therefore, adding high levels of zinc to the diet of weaned piglets has a significant effect on preventing piglet diarrhea. A trial by Kansas State University in the United States (1992) added high levels of zinc to piglet diets, adding 3100 mg/kg of zinc oxide per kilogram of feed, and completely controlled diarrhea.
Ning Kangjian et al. (1995) added 0.2, 0.25 and 0.3% zinc sulfate to a basal diet respectively, preparing three kinds of high-zinc diets. The results showed that the diarrhea rate of piglets was significantly reduced. Scientists in Denmark found through experiments that adding a certain amount of zinc oxide to feed can reduce diarrhea in weaned piglets. The amount of zinc oxide added to feed is 1000-2500 mg/kg. After feeding this zinc-containing feed to weaned piglets for 2 weeks, the number of piglets with diarrhea and the severity of diarrhea both decreased significantly. Zhai Sijian et al. (2000) showed that adding 2000 mg of zinc per kilogram of diet had a clear effect on improving the production performance of weaned piglets and reducing diarrhea. At the same time, a diet using both high zinc and acidifiers had a synergistic effect on preventing and controlling diarrhea in weaned piglets. Zhang Xiaoqiang et al. (2002) reported that a high-zinc diet can promote piglet appetite and reduce the occurrence of diarrhea.
Gluhovic (1995) added 3000 mg/kg of zinc oxide to the diet and fed 42 weaned piglets weighing 10 kg for 37 d, finding that the experimental group had no diarrhea, while the control group had a diarrhea rate of 25% and a mortality rate of 8%. Homll (1989) added 2400 mg/kg of zinc (zinc oxide) to the daily diet, significantly reducing piglet diarrhea. Zhou Wenyin et al. (1996) added 2000 mg/kg of zinc to the diet of weaned piglets; the incidence of diarrhea in the experimental group was 66.7% lower than that in the control group. Wu Yong et al. (1999) concluded from research that adding a high dose of zinc to the daily diet of weaned piglets can very significantly reduce piglet diarrhea. Zheng Jiamao et al. (2002) also obtained similar results.
Zhang Heliang et al. (2000) found in experiments that high zinc (2000 mg/kg) reduced the diarrhea rate of weaned piglets by 70.56%. Chen Yanzhen et al. (2001) reported that adding 2000, 2500, 3000 and 3500 mg/kg of zinc oxide to piglet diets reduced the frequency of piglet diarrhea by 22.3, 37.2, 33.53 and 51.5% respectively, which was consistent with the results of Wang Yong et al. (2002). Wang Minqi et al. (2003) found in research that zinc oxide and zinc sulfate reduced the number of Escherichia coli in feces by 50.38% (P<0.01)、48.50%(P<0.01)，腹泻频率则分别降低了96.88%(P<0.01)和68.75%(P <0.01)。