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Lethbridge Herald Newspaper Archives

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Lethbridge Herald, The (Newspaper) - November 14, 1972, Lethbridge, Alberta Tutiday, November 14, 1972 THE LETHM1DGE HERALD 3 DBS scare may hold litle validity Recent concern shown by Ca- nadian beef producers over the suspension of diethylstilbestrol (DBS) may be greater than the case deserves. This conclusion seems clear according to results of work at the Agriculture Canada Re- search Station at Melfort, Sask. DES is a sex hormone that Is used as an ear implant or as a teed additive to increase the rate of gain in cattle. Canada has suspended its use as either a feed additive or implant, while the United States has banned its use as a feed addi- tive, effective Jan. 1, 1973. "Canadian cattlemen are particularly bothered by the fact that the use of DES in the U.S. is banned in feed ac- cording to Dr. Stan Beacom, director of the Melfort station. "They feel this difference gives the U.S. feedlot operator an advantage over his Canadi- an competitor." INCREASE GAIN It is generally conceded that DES implants will increase the rate of gain in cattle by 10 to 15 per cent and result in'more efficient feed use. Implanted cattle also tend to produce more lean meat and less fat than non- Implanted animals fed to the same weight. "The new beef grading sys- tem in Canada places a prem- ium on the leaner carcass, making potential gains on mar- ket returns from DES implant use even greater than they were said Dr. Beacom. However, all is not lost, as be sees it. "In all the talk about ttiis in the farm press and elsewhere, no one has mentioned that there is a product available now on the Canadian market that can take the place of ho eaid. "Tliere is a second product which is licensed in the U.S. and is now being considered for approval in Canada by the health protection branch of the federal department of national health ard welfare." Both products have been carefully tested in feedlot trials at the Melfort Research Station. "The product now available to Canada contains two natural hormones, progesterone and es- tradiol, and is sold under the name Synovex Dr. Beacom explained. Another product for implant- ing finishing heifers is called Synovex H. Regulations stipulate that cattle must be implanted at least 60 days prior to slaughter. Most of the response occurs during this period, UCENSING7 The product under eonsidera- fion for licensing in Canada is Ralgro, made from an extract of corn mold. "The active ingredient, zcran- d, is not a said Dr. Beacom- "This means that Ralgro does not produce the side effect'! that may accompany the use of DES or Synovex during the first day or so in the feedlot. "Tliis product can be used for both steers and heifers. U.S. research suggests that response from Ralgro in terms of im- proved rate of gain and feed efficincy is about the same as that from DES, although the results are a bit more vari- able." When Ralgro was licensed in the U.S. a few years ago, re- searchers at the Melfort sta- tion quickly realized that a re- placement might be required for DES in view of its increas- ingly adverse publicity. BTAUT TEST As n result, they used a feed- lot tost in the early summer of 1971 to compare the effects of DES, Ralgro and Synovex S implants. Cost at (he implants was about 35 cents for 36 milli- grams of DES, 75 cents for 36 milligrams of Ralgro and for Synovex S, per crossbred Cbarolais-Angus steer used in the test. "The response to implant treatment was said Dr. Beacom. "Starting at weights of about pounds, the steers were fed for 166 days with average gams of 2.70, 3.40, 3.20 and 3.14 for the controls (no DES, Ralgro and Synovex steers respectively. "Dressing percentages aver- aged 55.9, 56.6, 56.5 and 56.8 respectively, with carcass weights averaging 599, 670, 651 and 649 pounds, respectively." No feed efficiency data were available; however, Dr. Bea- com made a "conservative es- timate based on the fact that faster-gaining cattle require less feed per pound of gain than slower-gaining cattle, that the 26, 19 and 16 per cent increases in rate of gain due to DES, RAL- gro and Synovex, respectively, would have been accompanied by at least an eight to 10 per cent saving in the amount of feed per pound of gain. "We estimate that a 10 per cent saving In feed costs would amount to about eight dollars per steer. "In addition, we have calcu- lated that if all the cattle in our test had been fed to the same market weight about pounds there would have been- a savUg of and 28 days of feeding with DES, Ralgro and Synovex, re- spectively, over the 194 days required for non-implanted cat- tle to reach the same weight. "Any way you took at it, the coat of any of the implant treatments was repaid several times over in this test." A second experiment Is In progress here, using a high en- ergy concentrate of equal parts of wheat and barley. After 98 days from the time of implant- ing in the summer of 1972, av- erage daily gains are 3.75, 3.80, 3.76 and 4.16 pounds for the con- trol, DES, Ralgro and Synovex steers, respectively. "This is the first time at Melfort that no response is showing from DES said Dr. Beacoin. "Perhaps this Is because of the very high rate of gain which may be close to the animal's potential He emphasized that the sus- pension of DES in Canada will not be as serious for beef pro- ducers as iodciated in quarters. Now you can own Plymouth's Happy Little Car 5 What's a Cricket? Plymouth's happly little car. It's a roomy 4-door sedan with 14 cubic feet of luggaga space in the trunk. Power front disc brakes. And the 4 cylinder engine can turn it on for highway cruising and still give you excellent economy. Then there's Cricket's rack and pinion steering, used on most high perform- ance and sports cars. Makes turning and parking a cinch. Remember too. Cricket has the same care in en- gineering found in all Chrysler-Plymouth cars. ONLY 4 1972 CRICKETS LEFT! Stock No. 3281 Fan torn Mist Metallic auto- matic, white side walls, twin carbs, block heater, bucket seats. Stock No. 3297 Polar white, automatic bucket teats. Stock No. 3294 Sunset Metallic, white walls, twin carbs, 4 speed, bucket seats. _ Stock No. 3298 Aztec Gold Metallic, auto- matic, bucket seats. Full New Car Warranty Immediate Delivery 7th St. and 1 Ave. S. Ph. 327-1591 ;