Abstract
Congenital heart disease (CHD) was reported in 4 necropsied calves referred to Mansoura veterinary teaching hospital during the period 2014-2016. The Four necropsied calves suffered from patent foramen ovale (PFO) (n=1), high ventricular septal defect (HVSD) (n=2)and persistent ductus arteriosus (PDA) (n=1). VSD was accompanied by valvular hematoma in 1 calf, hydropericardium, right ventricular hypertrophy and dextroposition of the aorta in another calf. Pasteurella multocida (P. multocida) was isolated from one lung lesion associated with VSD. Histopathological examination of different tissues from necropsied CHD affected calves was made. We concluded that extramedullary hematopoiesis in liver and lymphoid organs besides chronic interstitial nephritis were constant findings associated with CHD in calves.
Highlights
Congenital heart disease (CHD) in calves was uncommon being observed in only 0.17% of 50742 bovine hearts inspected in a slaughterhouse study (Van Nie, 1966)
Ventricular septal defect (VSD) in cattle has been identified in combination with multiple cardiac defects, such as dextroposition of the aorta (Belling 1961and 1962; Van Nie, 1966, Sandusky and Smith 1981; West, 1988; Penrith et al, 1994; Gavaghan et al, 2001), persistent ductus arteriosus (PDA) (Cordy and Ribelin, 1950; Sandusky and Smith 1981; West, 1988), patent foramen ovale (PFO) (West, 1988; Penrith et al, 1994; Schwarzwald et al, 2003), PDA (Belling 1961 and 1962), transposition of the great vessels (Sandusky and Smith 1981; West, 1988) and anomaly of the pulmonary (Belling 1961; Schwarzwald et al, 2003) or tricuspid valves (West, 1988)
I- Case history and clinical findings: A diagnosis of CHD was done in 4 calves based on a history of weakness, ill thrift, poor growth and respiratory disease that failed to respond to appropriate therapy
Summary
Congenital heart disease (CHD) in calves was uncommon being observed in only 0.17% of 50742 bovine hearts inspected in a slaughterhouse study (Van Nie, 1966). In this report we described histopathology of tissues in CHD affected calves and correlated our findings to bacteriological and immunohistochemical parameters
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