Abstract:In beef cattle production,calf diarrhea is a gastrointestinal disease with dyspepsia and diarrhea as the main symptoms.Lactating calves are more prone to diarrhea,accounting for about 80% of the incidence rate of calves.Bacillus subtilis and Lactobacillus acidophilus in the complex feed of residue can promote the proliferation and growth of beneficial bacteria in the intestine,effectively prevent calf diarrhea,and improve calf survival rate.Twenty 70 day pregnant Western hybrid cows were selected from the second animal husbandry farm of Gansu Wuwei Dingle Animal Husbandry Co.,Ltd.The defecation status of pregnant cows,lactating cows,and calves was measured and observed;The comprehensive diarrhea rate and fecal score of calves within 15 days of birth and within 90 to 120 days of age.The application of residue composite feed can reduce the diarrhea rate of 0-15 d old calves by 5.3%,weaned calves by 2.3%,reduce gastrointestinal diseases in calves,improve feed digestibility,and effectively prevent calf diarrhea.Feeding pregnant cattle with a complex feed of dregs can effectively prevent calf diarrhea and improve calf survival rate.
