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PubMedDate not supplied

Lesions of right heart failure and ascites in broiler chickens.

A naturally occurring cardiomyopathy in broiler chickens from a single Ontario farm was studied in order to define the morphologic changes. Gross and histologic features of affected birds were compared with those in age-matched control penmates. Body weight and weight and volume of individual cardiac chambers were measured. Histologic sections of 18 different tissues were examined, and lesions observed were scored subjectively. Affected birds were stunted and had marked right ventricular dilation and hypertrophy, atrial hypertrophy, ascites, pulmonary congestion and edema, and hepatic capsular fibrosis. Microscopic changes in the heart of affected birds were mild and did not suggest a specific cause of heart failure. Lungs had marked hypertrophy of parabronchial smooth muscle and collapse and apparent loss of associated air capillaries. Other histologic changes observed were thought to be the result of passive congestion of viscera caused by right heart failure and chronic debility. Although the specific etiology of this condition could not be determined, it was felt that this syndrome was unlikely to have been the result of any of the commonly recognized causes of congestive heart failure and ascites in broilers.

Altitude↗
PubMed1988

The effect of certain topical medications on healing of cutaneous wounds in the common garter snake (Thamnophis sirtalis).

The effects of four topical medications on the rate and character of healing of cutaneous wounds were studied in six common garter snakes (Thamnophis sirtalis) held at an ambient temperature of 30 degrees C. Two sets of five 6 to 8 mm round excisional wounds, four test and one control site in each set, were created on the dorsolateral body wall of each snake. Wounds were examined daily and treated for ten days, then the snakes were killed and sections of all wounds were examined by light microscopy. Composite scores, derived by ranking each treatment group in relation to the control group (control score = 0) for each of 22 characteristics associated with wound healing, were used to compare the overall effects of each treatment. Statistical comparisons were made between groups for 20 characteristics. Wounds treated with a polyurethane film merited a score of +12 and had significantly more advanced healing than untreated controls for three characteristics. Wounds treated with an ointment containing scarlet red scored +6 but healing was not significantly greater than controls. Wounds treated with an antibacterial spray powder and an antibacterial ointment healed more slowly than controls and had scores of -6 and -12 respectively.

Administration, Topical↗
PubMed1987

[Epizootiology, prevention and control of salmonellosis in swine].

Microbiologic studies were carried out in 1981-1985 with a total of 25,561 samples--12,878 were cadavers and viscera, 574 were fetuses, 6,208 were swabs of rectal samples. 844 were feces, 4,096 were washings, 493--feed samples, etc. A number of prophylaxis and control programmes were tested under productional conditions with the use of drugs and vaccinations with a live and a killed autovaccine. Salmonella organisms were isolated as follows: 9.05% from cadavers, 2.5% from fecal samples, 1.35% from rectal swabs, 1.2% from washings from the environment, 0.6% from feed samples--all belonging to 19 serologic types. Greatest importance was shown to have S. cholerae suis, which was epizootically specific for swine, however, the part played by var. america also grew as compared to var. kunzendorf. With the exception of several sporadic cases all other serologic types of Salmonellae were isolated from carriers, rectal and fecal samples, and others. In the event of swine salmonellosis under productional conditions better results were obtained with the use of drugs. Both morbidity and mortality rate dropped twice as low with animals treated with a live vaccine once, and with a killed autovaccine four times. Suggested is a prophylactic and control program, following a definite pattern in dealing with swine salmonellosis in enzootic foci, with the use of complex measures.

Animals↗