A combination of calcium hydroxide and sodium hydrosulphate controls pathogens causing environmental mastitis in recycled manure solids  

作　　者：Selladurai Praveen Mukund A.Kataktalware Priyanka Meena Maharajan Lavanya Priyanka Patoliya Sakthivel Jeyakumar Menon Rekha Ravindra Mamta Chauhan K.P.Ramesha G.Letha Devi John P.Kastelic Arindam Dhali 

机构地区：[1]Livestock Production Management,Dairy Production Section,Southern Regional Station,ICAR-National Dairy Research Institute,Adugodi,Bengaluru,Karnataka 560030,India [2]ICAR-National Institute of Animal Nutrition and Physiology,Adugodi,Bengaluru,Karnataka 560030,India [3]Faculty of Veterinary Medicine,University of Calgary,AB T2N 4Z6,Canada

出　　处：《Bioresources and Bioprocessing》2024年第1期1257-1268,共12页生物资源与生物加工(英文)

摘　　要：Recycled manure solids(RMS)are dried cow dung processed using a manure dewatering machine and subsequently sun-dried to~20%moisture.Benefits of RMS include abundant availability,low cost,and eco-friendliness,but its use as bedding material for cows is hindered by a moisture content that promotes microbial growth.This in vitro study evaluated impacts of calcium hydroxide(CH;5 and 7.5%)and sodium hydrosulphate(SHS;6 and 8%),independently and in combinations,at various depths of RMS,on physicochemical and microbial properties.The CH-treated groups had increased pH and reduced moisture on Day 0.Incorporating 7.5%CH+6%SHS at 15-20 cm,and 7.5%CH+8%SHS at all depths,effectively suppressed Escherichia coli and Klebsiella spp.Furthermore,a combination of 7.5%CH+8%SHS at 20 cm inhibited coliform growth,whereas 7.5%CH with 6%SHS inhibited Streptococcus spp.In conclusion,a combination of 7.5%CH with either 6 or 8%SHS at a depth of 15 cm in RMS was particularly effective in controlling environmental mastitis-causing pathogens,specifically E.coli and Klebsiella spp.

关 键 词：Conditioner combination Depth Properties Manure bedding Microbial biomass 

分 类 号：TB3[一般工业技术—材料科学与工程]