16—Lancaster Farming, Friday, June 27, 1958 ppr m- DALE R. WALDO (left) and William P. formation gathered from these tests will Flatt. USDA dain husbandmen, check give dairy scientists facts oh why a cow equipment used to measure the amount of uses more energy to maintain her body on gas a cow exhales Bag on other side of pasture than in a barn, and the extent of cow collects gas samples for analysis. In- this energy expenditure (USDA Photo) Insulin Injection Test Still Gives Promise of Dwarfism Detection ‘ Insulin injections are st'll giv od of detecting beef animals that i g piomise of providing a meth pioduce dwarf offspring ’ sajs Go M§lss”€[mimmrs .•. YOU'LL DO A LOT MORE FARMING WITH YOUR TRACTOR DOLLARS # Power .♦ , (official test on gasoline) 2 Working Weights «• , • with TRACTION BOOSTER system Speeds Implement Size , . . Fuel More crop-spanning clearance, and low utility-type conven ience .. more driving comfort and more health-guarding features than vouve seen in any tractor. See us right away, vve want to arrange a free on-your-farm demonstration TRAC 1 lON BOOSTER is an Allis Chalmers trademark ALUS-CHAUMRS <*g> SAI£S AND SERVICE L. H. Brubaker Lancaster, Pa. Mann & Grumelli Farm Serv. Quarryvil]e. Pa. Sna\elys Farm Service New Holland, Pa IV. G. Myers & Son Rhecms, Pa y'ciV'Jv.-. -> - t $ - D-14 Tractor D-17 Tractor 35 65 belt hp, 54 43 belt hp, 32 19 drawbar hp, 48.14 drawbar hp. Up to 6400 pounds Up to 7500 pounds l-4/5 to 14-2/5 mph plus Power Director plus Power Director 3 plows, 10 ft. tandem discs 4 and 5 plows _ , ~ Gasoline, LP fuel. Gasoline, IP fuel d , ese| Nissley Farm Service Washington Boro, Pa. R. S. Weaver Stevens, Pa. L. H. Brubaker Lititz, Pa. John F Lasley, University of Missouri animal husbandryman who developed the test “However, still further study is needed before the limitation of the test under a wide variety ef conditions is fully known ” “Since the test was first de \ eloped some two years ago, itb been used to test approximately 1,800 beef animals of various breeds, ages and sex in different parts of the country under vari ous climatic conditions,” he con tinues „ “DURING THIS work some errors have been made in pre dicting whether or not an animal is a carrier or non-carrier of the guilty of producing dwarf calves,” Lasley says “And, too, 10 to 15 per cent of the cattle don’t give a clear-cut response to the insulin treatment ” However, he notes that in most cases where test conditions were carefully controlled and great care taken to conduct the insulin test properly, results have been highly satisfactory. In describing the way the test is conducted, Lasley says an in sulin injection is used to put the animal to be tested under stress. Then with the aid of three blood samples one taken prior to an injection and two following the animal’s reaction to the stress producing insulin can be traced by white blood cell counts TESTING OF known earners of the dwarf-producing gene and pedigree-clean animals has shown that the white blood cell count rises much higher and at a more rapid rate in a clean animal than it does in the earner animal According to the animal breed ing specialist, several factors are now known to affect the accuar racy of the test to detect carrier animals The first and probably the most important, is the human enor involved in making blood cell counts A second important factor that seems to affect the results of the test is the stressing of animals be fore the test is made Lasley says that no animal should be tested unless it is quite and has been for seveial houis before being tested. QUICK CHANGES in weather from warm to cold or intense heat over a period of days are suspected of interfernng with* #■ * I i ■N X s, the response io insulin. “Possible means of increasing the accuracy of the test by learn mg more about factors which in fluence the response of individual animals to insulin, by improving the technique of making cell counts, and by adding to the means of distinction between pedigree-clean and carrier am mals are currently being studied,” he says. According to Lasley, additional studies show that differences in blood sugar levels of pedigree clean carnei and dwarf cattle are greater as the size of the insulin dosage is increased When a heavy insulin dose was used in the Mis soun woik, blood sugar differ ences between the three groups of animals were considerable WHEN A LIGHTER dose of in sulm was used, no definite dif fcience was noted in the blood sugar levels of pedigree-clean and earner animals as both groups showed essentially the same le actions to the reduced dosage, he continues. However, the dwarf SAFEST - SUREST - MOST ECONOMICALWAY TO CONTROL RESISTANT FLIES SAFE D-300 Bombs can be used safely where food and milk products are processed and handled D-300 does not harm, warm-blooded animals It is U S. D A. approved contains no inflammable sol vents leaves no messy resi due. ECONOMICAL One D-300 Bomb will treat an average 40-cow barn about fifty times. One bomb is equiva lent to 10-12 gallons of ordi nary fly spray Makes sanita tion easy and cheap. No spray guns or machines to clean and repair. SEE YOUR LOCAL DEALER Bareville Martin’s Hardware Bird-in-Hand Kauffmans Fruit Farm Blue Ball J. B. Zimmerman Denver Denver Supply Co East Earl D. W Hoover Elizabethtown Elizabethtown Farmers Supply Florin Hess Bros. P. L ROHRER & BRO., INC. SMOKETOWN, PA. cattle used in the testing still showed considerable reaction e\en though the amount of in sulin used had been lowered con siderably, Research work has shown that the removal of the pituitary gland fiom small laboratory animals has made them more sensitive to insulin treatments, Lasley says. And, current research results in dicate that dwarfs, and the car riers to a lesser extent, may be deficient in one or more of the pituitary hormones or that the hormones may be present, but are unable to function properly. May Milk Production Down 1 Per Cent Milk production in May, esti mated by the Crop Reporting Board at 12,889 million pounds, v/as 1 per cent less than in May 1957, but 4 per cent above the 1947-56 average for the month. For the first 5 months of this year, production totaled 54 4 bil lion pounds, slightly more than Jor the same months of 1957. Powered Aerosol Especially id For The Dairy Industry sccticide that’s amazing)/ effective, safe, eas/ to use, fast and clean. Kills ie resistant ones, and other insects that lair/ farm. Ask to see it demonstrated. IN)A SMELTING CO., WEST NORFOLK, VA. FAST AND CONVENIENT D-300 Bombs have extremely fast knock-down and kill particularly important at the critical milking time, when you want your barn fly-free. ASK FOR FREE DEMONSTRATION Lethalaire Bantam A Hi- Powered Aerosol For Household Use. Kills Flies, Mosquitoes, Wasps and Many Other Insects. Non—lnflammable and Non-Toxic— Safe to Use Where Food is Processed or Handled. FOR COMPLETE DETAILS Kirkwood J Fred Whiteside Lancaster Landis Bros,, Manheim Pk. Lincoln Galen’s Hardware Manheim N G. Hershey New Holland Earl Sauder Quarry ville A L. Herr & Bro, West Willow West Willow Farmers Assn Ph. Lane. EX 2-2659
Significant historical Pennsylvania newspapers