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Alimentary And Respiratory Tract Lesions In Eight Medically Fragile Holstein Cattle With Bovine Leukocyte Adhesion Deficiency (Blad), Mark R. Ackermann, M. E. Kehrli Jr., J. A. Laufer, L. T. Nutsz
Alimentary And Respiratory Tract Lesions In Eight Medically Fragile Holstein Cattle With Bovine Leukocyte Adhesion Deficiency (Blad), Mark R. Ackermann, M. E. Kehrli Jr., J. A. Laufer, L. T. Nutsz
Mark R. Ackermann
Lesions in the alimentary tract were studied in eight medically fragile Holstein cattle homozygous for the bovine leukocyte adhesion deficiency (BLAD) allele as determined by polymerase chain reaction and restriction endonuclease analysis. These cattle received institutional medical care but died or were euthanatized because of chronic debilitation associated with diarrhea (6/8) and pneumonia (4/8). The six cattle with diarrhea had acute (n = 3) or chronic (n = 3) intestinal ulcers, but the other two remained relatively healthy for 3 years and did not develop intestinal tract ulcers. Ulcerated areas were present in the small intestine in six animals, and …