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Colostral immunoglobulins and their absorption by newborn beef calves
| dc.creator | Vann, Rhonda Carol | |
| dc.date.accessioned | 2012-06-07T22:34:46Z | |
| dc.date.available | 2012-06-07T22:34:46Z | |
| dc.date.created | 1993 | |
| dc.date.issued | 1993 | |
| dc.identifier.uri | https://hdl.handle.net/1969.1/ETD-TAMU-1993-THESIS-V264 | |
| dc.description | Due to the character of the original source materials and the nature of batch digitization, quality control issues may be present in this document. Please report any quality issues you encounter to digital@library.tamu.edu, referencing the URI of the item. | en |
| dc.description | Includes bibliographical references. | en |
| dc.description.abstract | Brahman (B;n=20) and Angus (A;n=l 9) cows bred to B or A bulls to produce BxB (n=l 1), AxB (n=9), BxA(n=l 1) and AxA (n=8) calves were used to determine the oW of breed of service sire (Sire), breed of dam (Dam) and sex of calf (Sex) on concentrabons of Total lg, IgG, IgG,, IgG2' IgM and IgA in serum and colostrum. The Om were separated from their dam's prior to suckjing and blood samples collected M birth, 6,12, 24 and 48 h after birth. Cows were hand-milked under the influence of OXYTOCIN (30 IU i.v.) at 1 and 12 h after calving. Serum and colostrum samples were analyzed for IgG, IgG,, IgG2' IgM and IgA using single radial immunodiffusion (RID) W& Serum concentrations of Total Ig, IgG, IgG,, [gG2, and IgA were not affected by S,re, Dam, Sex or by any interaction. However. IgM concentrations at 12 h tended (P<.09) to be affected by Sire and were affected (P<.05) at 24 h by Dam. Efficiency of absorption at 6 and 12 h was not affected by Sire, Dam, Sex or any interaction. cows produced more (P<.001) colostrum of lower (P<.02) density than compared to A cows. Total Ig (P<.003), IgG (P<.008) and IgA (P<.006) cmntrabons were affected by interactions of Sire x Dam and Total lg (P<.02) and 0 (P<.008) were affected by Sex x Sire x Dam at 1 h. Concentrations of total Ig, IgG and IgA were higher in colostrum of cows producing crossbred calves. At 12 h, colostral IgG concentrations were affected by Sex x Dam (P<.004) and IgM and IgA concentrations were affected by Dam and IgG, concentrations were affected (P<.02) by Sex. Total Ig available at 1 and 12 h was affected by Dam (P<.001) and Sex x Dam (P<.05) at 1 h. Brahman cows had more (P<.0001) lg available at 1 and 12 h than A cows due to increased production of colostrum. Sire, Dam and Sex all influence colostral Ig in cattle. Cows producing crossbred bull calves had the highest concentrations of IgG and IgA in colostrum. Efficiency of absorption was similar for all ig classes and all breed combinations. | en |
| dc.format.medium | electronic | en |
| dc.format.mimetype | application/pdf | |
| dc.language.iso | en_US | |
| dc.publisher | Texas A&M University | |
| dc.rights | This thesis was part of a retrospective digitization project authorized by the Texas A&M University Libraries in 2008. Copyright remains vested with the author(s). It is the user's responsibility to secure permission from the copyright holder(s) for re-use of the work beyond the provision of Fair Use. | en |
| dc.subject | animal science. | en |
| dc.subject | Major animal science. | en |
| dc.title | Colostral immunoglobulins and their absorption by newborn beef calves | en |
| dc.type | Thesis | en |
| thesis.degree.discipline | animal science | en |
| thesis.degree.name | M.S. | en |
| thesis.degree.level | Masters | en |
| dc.type.genre | thesis | en |
| dc.type.material | text | en |
| dc.format.digitalOrigin | reformatted digital | en |
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