September 08, 2006 Dr. Buddy's Blog
When is the right time to deworm cattle in 2006? (Click on the outlined boxes for the photos....sorry, don't know why they aren't showing in thumbnail!) (Update 12-09-06, Photo of day after arrival home at the ranch is posted below in the body of this blog, note the bull, JWest's McCluskey, opposite the fence that is right at one month older than all 5 ET calves, and obviously raised very well by his dam DFTX Snowflake. Always ensure that Recipient Dams are Healthy and will be fed well by your ET program provider.)
"Short grass is commonly thought of causing wormy cattle by the cattle grazing down where the worms are, but that thought is a misunderstanding. The reason that producers think that way is because the cows look wormy, when actually the cows' poor body and hair coat conditions are related to malnutrition from low intake of roughages on short grass pastures. When short grass is caused from dry conditions due to lack of rain and from overgrazing the slow growth of grass, the worms are not down there in the soil; the larvae have died from the dryness, and also from the heat in the summer.
When stomach worm eggs are passed in cattle manure, the eggs hatch in the manure. The larvae must be washed from the manure by rains. The larvae can only crawl (swim) up the grass blades while the grass is wet from rain or dew. As the grass dries, the larvae go back down to find moisture. As cattle graze dry grass, they don't ingest larvae. After weeks of dry weather, larvae die, and without grass mats for cover, all the larvae die, and the pastures become free of contamination. . ."
The images you see above (may have to click on a little box, they're not wanting to load properly, but if you click on the outlined box they will load!) are of extremely dirty, barren, over grazed conditions at an ET Facility in Athens, Texas in early fall last year, one can only imagine the level of filth that continued to accumulate around them, it's a pretty good guess that no one there understands, or wishes to work at, the concept of dragging a pasture after rotation. These calves came home underweight, sickly, and have yet to thrive and grow like their peers, and one heifer is permanently blinded by pinkeye in one eye. This would be an example of conditions that Require worming and medication, quite regularly. A well run cattle operation, whether Grass or Grain based, should never reach this level of living conditions for any Seedstock cattle, much less Embryo Transfer calves. Actually, I wish to never see these conditions in any cattle operation.
" . .While pastures are contaminated with larvae, it may be cost effective to worm if the cattle have become exposed to enough larvae during 3 6 weeks of continuous rains with soil temperatures of 55 85 degrees when the larvae are active. If these conditions occur in the spring on some pastures; the timing to worm the cattle is following 3 6 weeks of continuous rain. If the rains come on contaminated pastures, that would make deworming cattle in May but not all pastures are contaminated because of the drought and good management practices. With rains in a cold April,..........." Follow the link above to read the rest of this blog!
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