The Transmission of Agglutinins of Bacillus Abortus from Cow to Calf in the Colostrum
نویسندگان
چکیده
The agglutinins towards Bacillus abortus found in the blood serum of new-born calves are obtained from the mother through the colostrum. Calves at birth, unfed, are without agglutinins. The problem of the production of agglutinins by the fetus in whose tissues Bacillus abortus has multiplied and which is subsequently expelled prematurely is not touched by these observations.
منابع مشابه
The Absorption of Specific Agglutinins in Homologous Serum Fed to Calves during the Early Hours of Life
The administration of cow serum by feeding may replace colostrum. The agglutinins towards Bacillus abortus in it are absorbed during the first hours of life in relatively large amounts when compared with those naturally appearing in ordinary milk. It seems probable that colostrum is the most efficient transporting agent of the antibodies. Experiments are under way to put these conclusions on a ...
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Some years ago, Theobald Smith and his associates (1) showed that passive immunity acquired by the new-born calf from colostrum is of prime importance in protection against infectious disease. At about the same time, Orcutt and Howe (2) observed that, after the ingestion of colostrum, agglutinins appear in the calf serum associated with a globulin which is precipitable at low concentrations of ...
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A comparison of the appearance of the agglutinins for Bacillus abortus in the blood of new-born calves with the first appearance of globulins in the same blood following the ingestion of colostrum indicates that the agglutinins are associated with the globulins. These observations are supported by the removal of the agglutinins from serum or colostrum with concentrations of sodium sulfate which...
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BACKGROUND: BACKGROUND: Enterotoxigenic Escherichia coli (ETEC) is the main causative agents of neonatal calf diarrhea. Passive transfer of antibodies that is derived from the dams of the calves through their colostrum plays an important role in disease prevention. OBJECTIVES: To determine the presence of natural specific antibodies against K99 antigen in dam’s serum and colostrum as well as in...
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ورودعنوان ژورنال:
- The Journal of Experimental Medicine
دوره 35 شماره
صفحات -
تاریخ انتشار 2003