RAHWAY, NJ - These cattle are often described as “poor doers” because they just don’t gain weight even though they look bright and alert and have a good appetite “Poor doers” cost producers' money in poor weight gams and reduced feed efficiency, but do you know why they do so poorly’ Dr. Tim Jordan, a feedlot vetennanan/consultant in Canyon, TX, attributes “poor doer” syndrome to Ostertagia ostertagi, more commonly known as the brown stomach worm. “We see a couple of different conditions caused by Ostertagia in the feed yard,” he says. “The ‘poor doer’ condition is probably the more common of the two. We see it in cattle that have been on feed for 30 to 60 days. “This condition is not easily diagnosed,” he says, “because the infected cattle do not have worm eggs in the feces. Other than a few cattle having bottlejaw, they do not exhibit the symptoms usually associated with a heavy worm burden. When we do a serum analysis, we find high levels of pepsinogen.” A high level of pepsinogen usually indicates the presence of the fourth larval stage of Oster tagia. These immature worms are dormant in the glands of the abomasum, where their presence interfere with the glands that produce hydrochloric acid necessary to convert pepsinogen 2 more of milk 10' cra< Feed the whole ear with Bearcat 24RC roller mill. Now you can cut cobs and kernels into uniform feed with the Bearcat 24RC roller mill. Even husks are cut into small, bite-size pieces. The result: more nutritious, palatable feed. Six rugged, 20" knives and two cutterbars pre-cut the feed, which then passes through a sizing IUKASTEN - See Your Local Dealer Kasten Mfg. Corp.. Allenton. W 153002 (414)629-5511 ICKES FARM SUPPLY Osterburg, PA 814-276-3422 STRALEYFARM SUPPLY Dover, PA 717-292-2631 or 717-292-4443 into the digestive enzyme pepsin. This reduces the animal’s ability to properly digest feed and con sequently its ability to utilize feed tor bodily maintenance or weight gain. “The second type of Oster tagiasis we see is in calves that come to Texas in the spring or fall from the Southeast or Midwest,” Jordan says. “The calves just abruptly die. They’ll have clinical signs that lead us to believe they have respiratory problems, but they do not respond to treatment for this. When we perform a necropsy, we find Ostertagia and the damage done in the abomasum.” Jordan says the incidence of these conditions is very sporadic. “We see it occasionally throughout the year and in only one or two pens in a yard. In those pens, one to 10 percent of the animals may have the condition. We have found Ostertagiasis at varying degrees in all the yards for which we consult; in about 100 individual cattle.” Ostertagiasis is not confined to Texas. During post mortem examinations of cattle that died from Leptospirosis, Dr. David Hahn, Canton, Illinois, found dormat larvae in the abomasum. Like those in Texas, the Illinois cattle did not exhibit symptoms normally associated with Oster tagiasis-watery diarrhea being the most common. “We don’t diagnose Oster tagiasis in this area a lot,” Hahn tons GRUMELLI’S FARM SERVICE Quarryville, PA 717-786-7318 SHUEY SALES & SERVICE Ono, PA 717-865-4915 ‘Poor doers 9 may have parasites screen with 3 M" holes. Big 10" rollers crack and granulate the com into high-quality feed. Clearance of 3 A" between blades and screen means easy running for fuel efficiency. A smooth, hydraulic auger feeder keeps the corn moving. With a 70 hp tractor, you can pro duce up to 600 bushels per hour. Start getting more nutrients per acre now—with a Bearcat 24RC roller mill. Talk to your Kasten dealer. POWER PRO EQUIP. CO. Milroy, PA 717-677-6504 New Holland. PA 717-354-4241 says. “But if the cattle we posted had the problem, we could also expect others to be infected with the worms, since all the cattle came from the Southeast.” Regardless of where it is found, Ostertagiasis is a costly problem in the feedlot and often goes un noticed. Jordan says, “we don’t recognize the problem is there. We just think these animals are “poor doers” so we cull them.” “Until recently,” he continues, “we didn’t have what we would call a cost effective treatment which would get the animals to respond.” With the introduction of ‘lvomec’ R (ivermectin), Jordan feels he has a cost-effective drug if used at the proper time. ‘lvomec,’ the new parasiticide from MSD AGVET, is the only drug available which controls both the adult and the larval stages of Ostertagia at the recommended dose. ‘lvomec’ also controls other internal parasites such as stomach worms and lungworms, as well as many ex ternal parasites such as grubs, mites and lice. The animals Jordan has treated with ‘lvomec’ have responded favorably, but he does not feel it is profitable to keep animals that have already been on feed for 30 to 60 days. 'There is some healing of the abomasum,” he says, “but there is not enough compensatory gain to justify keeping them. They will not be ready to market for another 60 days. Every extra day knives provided drive ERNEST SHOVER FARM EQUIP. Carlisle, PA 717-249-2239 THE WARNER CO. 'TiryMtlM Ftmir" Troy, PA 717-297-2141 Lancaster Farming Saturday, November 2,1985-09 1 in the yard decreases your profit. ’ ’ Rather than waiting for problems to develop and treating at this late stage, Jordan recommends treating all cattle which have the potential to develop Ostertagiasis with ‘lvomec’ when they arrive at the feed yard. w orm;ng "ther anthelmintics Vermeer adds PELLA, lA. - A giant round hay baler that automatically distributes hay evenly across the full width of the bale is now being offered by Vermeer Manufac turing Co. The new Vermeer 605 J Baler utilizes a computerized monitoring system (VCS System III) that receives sensory data as the bale is being formed and then signals the weave pattern of the baler, the automatic twine tie, “near full” and “full bale” indicator lights and the automatic gate close indicator. As a result, a tractor operator can drive the entire length of a hay field straddling the win drows...without weaving the tractor and without worrying about hay formation, size of bale, start up, unloading, closing the gate or clearing the bale. “Essentially, what we have designed is a baler that thinks,” according to Lyle Borg, Vermeer vice-president in charge of marketing. “We’ve taken the worry and guesswork out of baling and replaced it with a system that’s designed to produce per fectly-formed solid, round bales everytime.” The Vermeer 605 J features a iSuperhopper Got Grain? Then get the trailer that is Timpte tough... the Super Hopper. It’s not only built to take it...it’s also built to cut fuel costs. The Super Hopper is lightweight and aerodynamically designed to reduce wind drag. When there’s grain to be hauled, Timpte does the haulin’ best and pulls a lot easier than the rest. M.H. EBY, INC. P.O. Box 127 Blue Ball, PA 17506 (717) 354 4971 will control the adult stage of Ostertagia, but will not affect the dormant larval stage. “Cattle which have the potential to develop Ostertagiasis are those from the Southeast that arrive in Texas in late-summer and early fall,” Jordan says. new hay baler positive drive chain-type kicker that rolls out the package of hay eliminating the need to back up the baler to drop a bale. Air cylinders on both sides of the unit offer an infinite range of pressure settings ensuring uniform density throughout the entire bale. The unit also comes equipped with Waltershield PTO, 4-ball twine box, rubber-mounted pickup tines, an instant-start feed opening and 6M>” wide/2-ply belts that twist to eliminate build up on the ends. The 5,075 lb. machine is built with heavy gauge unibody side panels, a split tail gate section that’s totally reinforced with formed steel channel, 3560 lb. rated axles, and 6-bolt-hubs/spindles. A #BO roller chain runs the mechanical drive; W sealed, radial ball bearings are built into all drive and idler rollers, the bottom drum, the starter roller and pick up pivot (IV4” on the pickup spider). A rugged lower drive knife handles all types of crops, including soybean residue or corn stalks. The 605 J is capable of producing a bale that weighs up to 2200 lbs.*, measuring 6 ft. wide, 5 ft. in diameter. READ LANCASTER FARMING FOR COMPLETE AND UP-TO-DATE MARKET REPORTS BUY A 1986 TIMPTE LIGHTWEIGHT GRAIN HOPPER NOW
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