?:abstract
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Emphysematous abomasitis in a calf associated with over-feeding of milk substitute Although there was evidence of cryptosporidial infection and rotavirus was detected in caecal contents, the primary problem was considered to be over-feeding and subsequent acidosis with damage to the delicate abomasal mucosa and colonisation by gas-producing Sarcina ventriculi bacteria Subclinical infection by Y pseudo-tuberculosis is considered normal, and potentially common Subclinical infection by Y pseudotuberculosis in cattle is considered to be normal, and potentially common, although selective culture may be required to identify the organism in faeces samples due to overgrowth by commensal enteric bacteria Pathogens identified in neonatal bovine faecal samples in Northern Ireland, October to December 2019 Pathogen Number tested Number (%) positive Cryptosporidium species 193 72 (37 3) Rotavirus 199 64 (32 2) Coronavirus 201 5 (2 5) Escherichia coli K99 125 12 (9 6) Other enteric conditions Parasitic ova found in ruminant faeces samples submitted during the period are shown in Table 2 Table 2: Endoparasitic infections in ruminants in Northern Ireland, October to December 2019 Number of parasitic ova Total Negative + ++ +++ ++++ Per cent positive Liver fluke Bovine Ovine 742 169 703 148 35 9 4 9 0 1 0 2 5 1 12 4 Paramphistome Bovine Ovine 747 169 343 133 128 21 168 12 41 2 67 1 54 1 21 3 Coccidia Bovine Ovine 810 169 644 39 150 106 6 17 2 4 8 3 20 5 76 9 Total 500 epg 500 epg Per cent positive Strongyle worm egg count Bovine Ovine 808 169 780 124 28 45 3 5 26 6 + Low, ++ Moderate, +++ High, ++++ Very high 500 eggs per gram of faeces (epg) was considered of likely clinical significance Johne’s disease Examination for Mycobacterium avium subspecies paratuberculosis (MAP) was carried out on 430 bovine faecal samples by PCR
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