Infectious diarrhoea in neonates of animals is one of the most common and economically important conditions encountered in the livestock industry. Faecal samples (n=210) from diarrhoeic neonatal goat-kids of different livestock sheds of ICAR-CIRG, Makhdoom, Mathura (U.P.), were aseptically collected, and immediately processed for isolation of bacterial pathogens and parasitic evaluation. A total of 178 isolates of E. coli from 210 samples were identified on the basis of cultural, morphological,

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... biochemical and molecular characteristics. Out of 178 E. coli isolates, 3.93 % (7/178) isolates were identified as STEC by PCR amplification of stx-1 and stx-2 gene. A total of 64 isolates of E. coli were sent to National Salmonella and Escherichia Centre, Central Research Institute, Kasauli for the serotyping. The common serogroups of E. coli responsible for neonatal diarrhoea in goat-kids were identified as O36, O26, O59, O29, O43, O91, O82, O9 and O171, out of which, 46.15% were O36, O26 and O59. Cryptosporidium spp. infection was detected in 46 samples out of 148 faecal samples by ZN staining and nested PCR.Based on cultural, morphological, biochemical and molecular characteristics,16 isolates of Salmonella spp. and 5 of Klebsiella spp. were identified from 210 fecal samples. The present study concluded that E. coli followed by Cryptosporidium spp. and Salmonella spp. were the prevalent infectious agents associated with neonatal diarrhoea in goat-kids.