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Pulmonary histopathologic findings, acid-base status, and absorption of colostral immunoglobulins in newborn calves.
1994
Lopez A. | Lofstedt J. | Bildfell R. | Horney B. | Burton S.
A study was conducted to investigate whether aspiration of amniotic fluid is associated with a deleterious effect on absorption of colostral immunoglobulins or on blood gas and acid-base values of healthy newborn calves. Fourteen calves purchased from commercial sources were transported to a research facility immediately after birth and fed colostrum with known concentrations of immunoglobulins. Blood samples for gas analyses were collected within 5 hours of birth, 24 hours later, and prior to euthanasia. Between 3 and 5 days of age, calves were euthanatized by an overdose of barbiturates. Eleven calves had evidence of bronchoaspiration of amniotic fluid, as determined by presence of meconium, squamous epithelium, or keratin in histologic sections of fixed lung or by cytologic analysis of bronchoalveolar lavage fluid. Blood gas tensions and pH were within reference ranges in 11 of 14 calves. Aspiration of amniotic fluid could not be linked to any specific changes in blood gas tensions, acid-base status, or absorption of colostral immunoglobulins. Presence of keratin and meconium in the lungs often was accompanied by mild exudative alveolitis and focal atelectasis. It was concluded that aspiration of small amounts of amniotic fluid with or without meconium is common in calves and is not associated with hypoxemia, respiratory acidosis, or failure of passive transfer.
Show more [+] Less [-]Pathological studies on exudative epidermitis in experimentally infected pigs-(1)-Macroscopical and histopathological observations.
1994
Oh K.S. | Lee C.S.
Study on the pathogenesis of canine herpesvirus infection-(1)-Histopathological and electron microscopical observation
1994
Seo, I.B. | Lim, C.H. (Seoul National University, Suwon (Korea Republic). College of Veterinary Medicine)
Effects of administration of Lactobacillus acidophilus-fermented milk on hematological values and histopathological changes of kidney in cadmium-treated rats
1994
Cho, Y.C. (Chungnam National University, Taejon (Korea Republic). College of Medicine) | Jun, M.H. | Chang, K.S. (Chungnam National University, Taejon (Korea Republic). College of Veterinary Medicine)
Histopathological and immunohistochemical studies on the intestinal lesions related to the infected age in spontaneous canine parvovirus enteritis
1994
Ku, J.L. | Seo, I.B. | Lim, C.H. (Seoul National University, Suwon (Korea Republic). College of Veterinary Medicine)
Porcine reproductive and respiratory syndrome virus: morphological, biochemical and serological characteristics of Quebec isolates associated with acute and chronic outbreaks of porcine reproductive and respiratory syndrome
1994
Mardassi, H. | Athanassious, R. | Mounir, S. | Dea, S.