Zobrazeno 1 - 5
of 5
pro vyhledávání: '"Donald G. Waldhalm"'
Publikováno v:
Veterinary Microbiology. 7:493-498
The efficacy of a bacterin prepared from Chlamydia psittaci grown in mouse L-cells was compared to a similar bacterin prepared from C. psittaci grown in chicken embryos (CE). Both bacterins significantly reduced (P less than 0.03) incidence of aborti
Publikováno v:
Theriogenology. 11:441-444
The virulence in pregnant ewes of a single strain of Chlamydia psittaci was tested after the following treatments: (a) 110 serial passages in chicken embryos (CE) incubated at 37 C, and (b) 7 CE passages at 37 C followed by 10 CE passages at 40 C. Ne
Publikováno v:
Theriogenology. 12(2)
Cows fed 0.37 Kg crude protein per day for four months before calving showed no decrease in colostral IgG, IgA, or IgM from cows fed a normal ration. Similarly, no difference in serum immunoglobulin concentration was detected in their calves. Cows in
Publikováno v:
Theriogenology. 12(2)
Beef cows fed 0.37 Kg crude protein/day during the last four months of pregnancy had significantly shortened gestation (274 days vs. 282 days) and decreased weight gain (25 Kg vs. 66 Kg) compared to control cows fed 0.96 Kg crude protein/day. Calf mo
Publikováno v:
Avian Diseases. 21:452
An epizootic of unknown etiology resulting in the death of about 500 sea gulls (Larus californicus and Larus delawarensis) in 24 hr occurred on an irrigation reservoir in southwestern Idaho in April 1975. Salmonella spp. were isolated from necropsy s