Table 2.
Retroviral detection, presence of encephalitis and clincal disease conditions in 16 Holstein cows from a herd with endemic bovine immunodeficiency virus infection
| Animal number | BIV |
BLV | Encephalitisa (viral-type) | Disease problems (primary and opportunistic) | |
|---|---|---|---|---|---|
| Tb | Ec | E | |||
| 1 | + | + | + | + | Postpartum calcium therapy, metritis, mastitis, subcutaneous abscesses (E. coli) |
| 2 | − | + | + | + | Abscess—1 foot; abscessed mammary lymph node (S. bovis) |
| 3 | − | + | + | + | Teat laceration, mastitis with abscessation (S. bovis) |
| 4 | − | + | + | + | Left displaced abomasum, chronic mastitis with abscessation and fibrosis (S. uberis) |
| 5 | − | − | + | + | Nocardial mastitis (2 quarters), mammary LN (Corynebacterium spp.), focal interdigital ulceration |
| 6 | + | − | + | + | Prepartum LDA surgery, mastitis, myositis and multiple subcutaneous abscesses, abscess caudal to stifle (Actinomyces pyogenes), hepatic distomiasis, NC-BVDVd |
| 7 | + | + | + | + | Myositis and abscess, arthritis and tendonitis (S. Agalactiae), NC-BVDV |
| 8 | − | + | − | + | Uterine rupture and peritonitis (S. agalactiae), hepatic abscesses, subcutaneous seroma on lateral abdomen, hepatic distomiasis, NC-BVDV |
| 9 | + | − | − | + | Metritis, mastitis with abscessation (S. agalactiae), hepatic distomiasis, NC-BVDV |
| 10 | + | + | + | + | Mastitis with abscessation (beta-hemolytic Streptococcus spp), septicemia, hepatic distomiasis |
| 11 | + | − | −e | (+/−) | Mastitis (no bacterial isolate), ovarian cyst, erosions of soles, liver (Salmonella sp. Isolated) |
| 12 | + | + | + | + | Agalactia, erosions of sole and pododermatitis—4 feet, hepatic distomiasis, C-BVDV |
| 13 | + | NT | −e | + | Periarticular cellulitis, tendonitis and abscesses deep at right stifle, hepatic distomiasis |
| 14 | + | + | −e | + | Myositis and stifle abscess (beta-hemolytic Streptococcus sp.), generalized Demodex infestation, hepatic distomiasis |
| 15 | + | + | + | + | Lymphosarcoma, multiple organs, (uterus), interdigital dermatitis and separation of hoof wall, 1 foot, abortion, positive Chlamydia antibody |
| 16 | + | + | + | + | Hygroma, myositis, mastitis, erosions of soles with abscess—2 feet, rumenitis (E. coli isolated from liver), hepatic distomiasis |
a
Histologic evaluation.
b
Detection of BIV provirus in tissue.
c
ELISA serum antibody detection.
d
NC-BVDV, C-BVDV: Non-cytopathic, cytopathic bovine viral diarrhea virus; NT: not tested.
e
Previously tested positive for BLV.