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The Rural Voice, 2004-04, Page 35individually fed with a trough for each sow. Sows from each group are fed in groups once a day. Ad libitum liquid feeding provide hygienic feeding conditions with no food waste because too much feed isn't put into the trough at a time, Pedersen said. The farmer also doesn't have to worry about regulating the feeding curve. The disadvantage for weaners is there is no opportunity for reduced feed rations in case of diarrhea (Denmark uses no growth promotants). Among the grower- finisher pigs the problem with ad libitum feeding is pigs eat too much leading to low lean meat percentage and poor feed conversion ratios, which is why this system isn't used a lot for growing-finishing operations in Denmark. Restricted feeding, on the other hand, has the largest advantage for growing and finishing pigs, The feed ration for each pen can be controlled in this system and consumption can be reduced toward the end of the growing period. It's also easy to observe pigs and see if some needs special attention and treatment. Amajor difference between Danish and Ontario liquid feeding production is that the Danes use wheat and barley, which they can grow themselves, not the corn that's most common in Ontario. They import soybean meal for protein and feed fish meal for weaners, but not to grower-finisher pigs because the fish meal could taint the meat. Main by-products are whey and a yeast, like brewers yeast, that comes from the production of insulin. Much of the performance benefit of liquid feeding comes from fermenting the feed, Pedersen said. While there will always be some fermenting if the pipeline or tank is not cleaned out completely, a full fermentation system that lets the feed ferment in heated water at least 24 hours before feeding benefits the pig by the creation of lactic acid. In Denmark, lactic acid is typically added to dry feed at a rate of .2-2.0 per cent, creating 2-8 million lactic acid bacteria per gram of dry feed. But fully fermented liquid feed has a billion lactic acid per gram and a low pH of 4.0. "You produce your own lactic acid by fermenting," Pedersen T.S. Fabrication WALTON, ON (FAX 519-887-9011) Dealer Enquiries Welcome 1-800-265-9682 LH �i�/ TS Fabrications Custom fabricators of post pounders, dump trailers and all types of manure spreading equipment Manure tankers from 650 to 6800 Gal. Solid manure spreaders from 3 to 30 Ton Walton Equipment Rentals Phone 1 (519) 887-9319 42822 Blyth Rd RR al WALTON, ON NOK 120 Fax: 1 (519) 887-9011 E -mad Address gsutclrtle8ahotmad com JOSKIN TORNADO JOSKIN COBRA K -TWO DUMP TRAILER KUBOTA 3T TRAILER POST POUNDER BOMFORD BOMFORD LOG SPLITTER Cell: 1 (519) 524-0375 2004 PRICE LIST Vertical Beaters Manure Spreader 15T 11500L Vac Tanker High Speck Auto Fill. Flotation Tires Vertical Beaters Manure Spreader 8T 20 Tonne 32 CB Meters Flotation Tires Excavator Rubber Tracks, 3 Buckets (12-, 24", 48") Deck Over Trailer 18' Beavertail 4.5T GVWR 3PH Hydraulic c/w Tiailer HedgefVerge Cutter Arm Type 3PH Grass/Brush Cutter Front/Rear Mount 3 PH Mobile Log Splitter c/w Engine PD S350 S220 S250 S250 5200 S80 S175 5175 S175 550 PW S1750 S1100 51250 51000 5850 S300 5800 S875 S875 S250 APRIL 2004 3'