Review/Oorsig Volume 23, Issue 01 - Page 24

Oorsig/Review do you need to feed? But the story that these products KILL parasites is not true! Just my humble opinion! JB – 12 Feb 2014 There is a firm belief, also in the wildlife industry, that aloes, especially Aloe excelasa, control/ kill worms and that antelope that eat these aloes have fewer ticks. Again, merely observations, no concrete proof. One aspect of aloes is that they are extremely 'hungry feeders', and in the wild they grow in places where the mineral content is high, i.e. on fertile soil. I have often wondered if they do not absorb large quantities of these minerals and if this is not the reason why animals eat aloes, especially where there is not a 'brak' where they can lick. Diatoms are unicellular organisms, related to the algae, and they have an outer cell wall that is composed almost exclusively of silicon. So, what their nutritional value is escapes me, especially stuff that is fed to animals, diatomaceous earth, that is completely dehydrated fossilized remains of these algae. Some of the older ruralvets may remember using diatomaceous earth as filter material in their swimming pool filters.....for what it is worth. GV - 13 Mar 2017 Dear veterinary colleagues I read all the comments that Faffa sent on from RuralVet, Dr Strydom and Dr Snyman. Some very brief background: I laid charges against companies that marketed diatomaceous earth as endectocides and ectoparasiticides without the required registration as such. Izak Maritz eventually registered his silicified plankton as an animal feed supplement with a V registration. I have no problem with that, but the moment they claim parasiticide characteristics I will nail them again. About three other people also got the stick after I laid charges and withdrew their products. The Eko Waterkripdosering is right out of Star Wars: it cures any disease and all parasites on all live vertebrates. I bought myself some of this wonder remedy and ate a tablet. I can assure you I have no parasites left after I ate it, but I also had no parasites before I ate it! Does it work? No one knows because the manufacturer cannot name the esteemed veterinarian who was the consultant. Yet the MCC gladly accepted an application for it to be registered as a complimentary medicine under Act 101/1965 which prompted the manufacturer to use that reference number as a registration number. I laid charges against the 24 manufacturer FOUR times and the case is now the NPA. Nothing more I can or want to do. What we need to do is sit back and relax and let these folks sell their snake spit to farmers – once there is a really good outbreak of parasites, the farmers will understand the value of registered anthelmintics and ectoparasiticides. Let them threaten us with legal action if we speak out, because we do not contravene any act, we merely affirm Act No. 36 of 1947. Best wishes. Dr Gerhard H Verdoorn: Director GRIFFON POISON INFORMATION CENTRE (not a veterinarian! but working with the veterinary industry) JvR – 27 Jun 2017 In my experience (Jo’burg zoo and game farming in the Karoo) the anthelmintic problem in non- domestic species under stress can best be managed with nutrition. NN - 28 June 2017 I see that back in 2010 there was talk of efficacy trials of diatoms for internal parasites, still no new publications? I realise that there is publication bias against negative results i.e. if a trial of a proposed new treatment yields significant results the trial is thought to be more "sexy" and is more likely to see the light of day, but I don't see much on either side. Fernandez, M. I.; Woodward, B. W.; Stromberg, B. E. (1998). "Effect of diatomaceous earth as an anthelmintic treatment on internal parasites and feedlot performance of beef steers". Animal Science. 66 (3): 635–641. Anecdotal evidence is the lowest form of evidence but still counts for something in a vacuum. Any anecdotes of failure of diatomaceous earth to control internal parasites? The reason for my interest is that I have game farmers (or rather beef farmers with game in small camps) who are requesting in-feed anthelminthics. I think I would do less harm by selling them a placebo, but would rather sell something that helped (obviously in combination with advice regarding stocking densities etc). Given that we want to rely less on anthelminthics, and given the dearth of reliable evidence, am I a charlatan to sell diatomaceous earth in this scenario? JB – 28 Jun 2017 Neil, there are many articles on the web that deal with diatomaceous earth or diatomite, most of which indicate that it has no effect on the worms, and that one has to be careful of the other minerals that are incorporated in the silicon skeletons,