Ultrasonographic appearance of exogenous isobutane gas in the mammary glands of dairy cows
Search for other papers by Steven S. Trostle in
Current site
Google Scholar
PubMed
Search for other papers by Robert T. O'Brien in
Current site
Google Scholar
PubMed
Search for other papers by Jenks Britt in
Current site
Google Scholar
PubMed
Search for other papers by Kenneth R. Waller in
Current site
Google Scholar
PubMed
Objective
To determine whether exogenous isobutane gas infused into the udders of dairy cattle could be detected ultrasonographically, and if so, what effects volume of gas infused and infusion pressure had on how long after infusion exogenous isobutane gas could be detected.
Design
Randomized block design.
Animals
8 Holstein cows 28 to 32 days after parturition.
Procedure
In each cow, 1 mammary gland was not treated and the other 3 received 1 of 3 treatments by means of intramammary infusion: low volume-high pressure, low volume-low pressure, and high volume-high pressure infusion of isobutane gas. Mammary glands were examined ultrasonographically 1 hour before and 1,3, 12, 24, 36, 48, 72, and 96 hours after treatment.
Results
After intramammary infusion of isobutane gas, bright echoes and associated acoustic shadows were seen ultrasonographically; echoes were no longer seen 72 hours after gas infusion. Percentages of mammary glands in which bright echoes were detected were not significantly different among the 3 treatment groups at any time during the study.
Conclusions and Clinical Relevance
Results suggest that exogenous isobutane gas infused into the mammary glands to enhance the appearance of the udder of show dairy cattle can be readily detected by ultrasonography. (J Am Vet Med Assoc 1999;215:366–368)
| All Time | Past Year | Past 30 Days | |
|---|---|---|---|
| Abstract Views | 0 | 0 | 0 |
| Full Text Views | 505 | 96 | 4 |
| PDF Downloads | 58 | 36 | 0 |
