To WormMail list. ~ 400 subscribers. (Recipients undisclosed)
In this issue:
- ParaBoss News-February 2015-incl. excerpt-Rad Nielsen
- Fat is back?
WormFaxNSW for January is on-line
WormFax is a summary of sheep WormTest results from around NSW.
More information and data: http://www.dpi.nsw.gov.au/aboutus/resources/periodicals/newsletters/wormfax
Also check out ParaBoss news (update on worms, flies and lice for February 2015).
Experts from various regions comment on what is happening worm-wise in their patch.
Below is an example: Rad Nielsen gives district-specific comments for the Armidale region:
“The generally good rain in January has stimulated worm activity in the north of the state. The VHR Laboratory has identified some very high worm egg counts over the past few weeks, mean worm egg counts (WECs) in the order of 3–4,000 eggs per gram of faeces (epg) being seen on a number of occasions. Interestingly, no worm symptoms had been identified by the graziers in several of these cases, despite mustering and close observation. This highlights the fact that sheep may carry high worm burdens of Haemonchus without necessarily expressing clinical signs. Worm monitoring allows this condition to be identified and appropriate drenching conducted before a “crash” occurs.
A number of clients have maintained their sheep in a low-worm status despite the favourable environmental conditions for worms. The key to their success in nearly all cases has been the adoption of rotational grazing, combined with varying degrees of co-grazing with cattle. A case in point is a Walcha district property that has a mob of 4,500 ewes which have not been drenched for worms since mid-September. Their most recent monitor (mid Feb) showed that they had a mean WEC of only 80 epg.
A recent submission highlighted the importance of establishing the nature of the worm infection you are dealing with and being aware of the limitations of the various drenches. Lambs treated with naphthalophos and levamisole continued to be showing illthrift (and a number dead) one week post treatment. A worm egg count was performed, which confirmed a significant Black Scour Worm infection (mean WEC of 800 epg). It is not uncommon for such a drench combination to be largely ineffective against scour worms.
Dr Rad Nielsen, Veterinary Health Research, Armidale”.
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Fat is back?
British nutritionist/researcher Zoë Harcombe and colleagues have just published a review which challenges the basis of dietary fat guidelines.
Harcombe et al, Evidence from randomised controlled trials did not support the introduction of dietary fat guidelines in 1977 and 1983: a systematic review and meta-analysis. http://openheart.bmj.com/content/2/1/e000196 .
However, various experts have challenged the findings. For example, see here: http://www.timeslive.co.za/thetimes/2015/02/11/we-ve-been-sold-a-big-fat-lie