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Lethbridge Herald Newspaper Archives

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Lethbridge Herald, The (Newspaper) - December 17, 1974, Lethbridge, Alberta 4 THE LETHBRIDGE HERALD Tuesday, December 17, 1974 Research Station report: By DR. W. A. NELSON Entomologist Every winter some cat- lie die. many cows abort, and a few buils are rendered sterile all as a result of heavy infestations of short-nosed cattle lice. The cause of these symp- toms is the lack of enough red cells in the blood to maintain its normal ox- ygen content. As a result, the tissues become short of oxygen. This anemic condi- tion results from the feeding of short-nosed lice. Except during molting, the immature stages of the lice remain attached con- tinuously to the outer layer of the skin. The long, tuhe- like stylets of the mouth parts remain inserted into capillary blood vessels and blood is pumped continuously into the gut of the louse. Nutrients are removed from the blood as it passes through the gut and is ex- creted. The lice seem to remove much more blood from the host animal than they need. If numbers of lice reach a high level during winter, the red blood ceils are removed from the animal faster than the bone marrow can replace them. Anemia can develop within six months, although it may never develop at. all in resistant host animals. So, constant watch must be maintained over cattle in the fall. Animals that are visibly infested should be sprayed while daytime temperatures are above 40 degrees before winter sets in. Work at the Lethbridge Research Station has shown that prevention or cure of anemia depends on the effectiveness of the insecticide! treatment. All lice and their eggs must be killed. The entire body should be sprayed to pre- vent numbers of lice from reaching high levels in midwinter when treatment is difficult and less effec- tive. See your local district agriculturist for advice on the insecticides that should be used. fast Wishes for Christmas 1 delighted to have this opportunity j[ to send the season's best wishes j[ to you. Have a Merry Christmas. I I The Management and Staff of f MACLEOD FARM CENTRE New Holland Equipment i Fort Macleod 234-4428 328-1477 VANCOUVER (CP> Years ago in Europe. people killed flies by crumbling a certain mushroom into a bow! of milk and leaving the mixture out in the open. Flies died, the people thought, because they drank the poisoned milk. But not so, said exhibitors during a recent mushroom fair at the Centennial Museum here. What really happened was that hallucogenic toxin in the mushroom stunned the flies, causing them to fall into the milk and drown. Bill McLellan, assistant designer at the m us e m. said this particular both a neuro-toxin and a gastro-toxin. The latter you sick and the former makes you high. The possibility of poisoning must be considered by people interested in experimenting with the hal- lucogenic properties of mushrooms. But Mr. McLellan said "there's no trick, there's no old wives' tale" to show a person which mushrooms are edible, which ones are psychedelic and which ones are deadly. Geoff Stewart, museum curator of natural history, said the problem of people dying from eating poisonous mushrooms is not as serious in North America as in Europe. "Most people in North America seem to be afraid of eating mushrooms unless they know what they are he said. Mr. Stewart said of the 200 varieties collected around British Columbia for the fair, about 10 were easily recognizable as edible species. PRE-FINISHED PANELLING CHRISTMAS VALUES for the Interior Decorator now through Dec. 31. Add that extra finishing touch to your room or rooms with GLAS-TILE Quality Mirror Square Tiles Easy to Install Do-lt-Yourself Plain and Assorted Patterns INTRODUCTORY OFFER Z-BRICK 5% OFF REGULAR SELLING PRICES Spruce up your Bathroom or Kitchen CERAMIC GLAZED TILES 4Vj x 4Vz inch Tiles Color Co-ordinated to Match your Room Do-lt-Yourself, easy to install THE IDEAL PRODUCT FOR REMODELLING INDOORS OR OUTDOORS! Living Rooms Siding Family Rooms Fireplaces Basement Rooms Fireplaces Dens Fireplaces INEXPENSIVE, MAINTENANCE-FREE PANELS FOR BUILDING LUXURIOUS INTERIORS. BUILD IT YOURSELF! INTRODUCTORY OFFER 5% OFF REGULAR SELLING PRICES! OFF NOW 0 OFF REGULAR SELLING PRICES! Plus many accessories to finish the job. Nails Panel Adhesive Vinyl Mouldings 5% REGULAR SELLING PRICES PLUS MANY IN-STORE SPECIALS FOR THE HOLIDAY SEASON! 3131- 2nd AVE. NORTH I LETHBRIDGE, ALBERTA Phone 328-5531 Jack McDonald, Manager i ;