18—Lancaster Farming. Saturday. January 10.1970 Dip After Milking To Prevent Udder Infections Chemically sanitizing cows’ leats immediately after milk ing is a promising way to re duce the incidence of udder in fections that cause mastitis A number of micio-organisms infect the udder, contributing to the general inflammation call ed mastitis Bacterial invasion likely begins with a beachhead Dipping teats in disinfectant at the openings of the teats, foi solution must be done after colonies of bacteua there are milking McDonald sanitized dangeiously close to the uddei's | teat cups before milking each mtei ioi Now, reseat ch at Belts- j ville, Md, and Ames, lowa, in dicate that the best time to ap- ply conti ol measuies is imme diately after milking, not be- foie, as is usually done At Beltsville ARS microbiologist W D Schultze selected, from cows in a regular milking barn, a group with laige skin populations ot staphylococcus bacteiia on their teats Immediately after these cows were milked, half of them had then teats dipped in a solu tion containing the disinfectant chloi hexidme at 2,000 parts pei million Thnty days of dipping leduc ed the aveiage staph level on teat ends from 84 points to 3 points on a scale wheie 100 lepiesents a heavy infection j Population scoies of cows with) untieated teats did not change in the same month To double-check, Schultze switched the use of the dip to • the othei cow gioup Dipping! Icwei ed the average skin popu-1 lalion scoie fiom 84 points to 4 points, while the scoie of the now-untieated cows lose from 3 to 57 points in 21 days As a du ect test, Schultze then isolated a smallei group of cows and deliberately exposed them by dipping "teat "cups of the miking machine in rinsing water laden with about 5 mil lion staphylococcus per milli liter One side of each uddei was dipped in the sanitizing solution after each milking, the othei side remained untieated Since each udder quaiter is an independent gland without dn ect connection to the other thiee, one quaiter can become mfected while the otheis le mam healthy Fourteen percent of the dip ped quaiteis became infected, while 41 percent of the unpro tected quarteis caught mastitis during a year’s lactation The dip used by Schultze con tained an agent to prevent chapping of the teat skin, a side effect that may become serious with lengthy dipping Schultze fust used tung oil, a drying agent incorporated in at least one commercial teat dip as a chapping pi eventive Some cows still suffered from extensive skin scaling and irritation He then tried lanolin, a soften ing agent often used in cosmetic lotions for humans This base prevented skin pioblems throughout the year in all but one test cow; but no dip with lanolin is commercially avail able, so far as Schultze knows At Ames Veterinarian J S McDonald exposed the teats of nonmfect ed dany cows for three weeks to teat cups dipped in milk contaminated with 2 million Stieptococcus aureus bactena pei milliliter Udder infection was pi evented by dipping teats in chloihexidme solution with in 30 minutes after milking with contaminated equipment McDonald then dipped teats dnectly in bacteual cultuies and continued dipping teat cups in contaminated milk foi an othei 3 weeks Dipping in the disinfectant still pi evented ud- der infection. Only when Mc- Donald added another stress overmilking for 4 minutes just before contaminating teats and teat cups did 1 percent of the uddei quarters become infected The tests were conducted at the National Animal Disease Labor atory. Farm Show SPECIALS FOR THE MONTH OF JANUARY C HYBRIDS. SAYS:;;; LET’S RUM A REAL tmiD CORN CONTEST! RIGHT ON YOUR OWN FARM: Experimental errors in large scale tests such as State yield tests are so large as to make the rest Its useless. But you can compare and choose the hybrids that give you the best performance right on your own faim.. and without nskmg a penny of your seed invest- ment, with the YW Yield Warranty Program. Get the details on this unusual offer that no other seed corn producer dares to make. ASK ABOUT OUR QUANTITY DISCOUNT AND THE YW TOP-YIELDERS FOR NARROW ROWS, HIGH POPULAiSOb AND HIGH FERTILITY fSX 362 95-105 days SX47 110 days to maturity to maturity I jtL Jv SX*2A 105-110 days SX 67 110-115 days m to maturity to maturity j SX 96 . 115 to 120 days to maturity 'W' SX 99 115 to 120 days to maturity SX 804 . 115 to 120 days to maturity ATT, YW HYBRIDS ARE YIELD WARRANTED AND ON TOP OF THIS EARLY ORDER DISCOUNTS UP TO J l,OO PER unit KILL RATS and MICE FAST with FERRET . . . the great new breakthrough in Rat and Mouse Control Fancy packaging and over- ers coast to coast Also by drawn claims are aimed at stockyards in Chicago, Omaha the public, but do not fool and Denver Come in,and let rats and mice To kill lats us explain how you can and mice you need the amaz- achieve perpetual control ing Ferret Rat and Mouse using Ferret Killer Rats find it nresis tible, steal the deadly little sack and carry it to then nest Ferret is used and ac- 1 1 claimed by fanners and feed- LET THEM STEAL THEIR OWN POISON SPECIAL 10% OFF EASTERN STATE DISTRIBUTING CO. Lititz, R. D. 2, Pa. 17543 cow, but contaminated toat ends Immediately after milking A half hour before the next milk ing, he dipped teats in disin fectant. yet 2 percent of the quarters became infected dur ing the 3-wcck trial Dipping really was the dif ference in preventing udder in fection. McDonald cured all ud der infections that had occurred during previous trials, then dip ped all teats before and after each milking for 3 weeks Teat cups were also dipped in infect ed milk. Without treatment, more than 9 peicent of the quarters of cows on trial be came infected. The dip tested by McDonald Weed Killers Many farmers and home gard eners have both seeds and chem ical weed killers to store for next year. I’d like to point out the clanger of keeping these weed killers near any seeds or bulbs, was unusual in that its chlor hexidinc strength was five times that of common commercial dips 10,000 ppm instead of 2,000 ppm McDonald strongly recommends the high strength At least one commercial dip with 10,000 ppm chlorhexidine is already maiketed, cost is about one-quaitcr cent per cow per milking Growers Fertilizer Solutions Get Top Yields At Low Cost. Here's proof right in Lancaster County. Paul S. Ebersole, Elizabethtown R. D. 1, got 190 bu. yield per acre with a Growers Fertilizer Solution cost of only $6 90 per acre. JANUARY SPECIAL 7% CASK DISCOUNT Quality Imported Baler Twine 9,000 ft (TS 325 lbs ) and 10,000 ft. (TS 290 lbs.) 40 lb. Bales JANUARY SPECIAL UP TO 50* OFF Per bale for quantity orders. TAKE ADVANTAGE OF THESE JANUARY SPECIALS NOW Bring this coupon to the Farm Show Booths Nos. 591 and 592 Section E or mail it directly to us. I want the January Special on: □ Griffith YW Seed Corn □ Ferret Rat Poison □ Growers Fertilizer Solution □ Quality Baler Twine Name Addiess My dealeis name is ° Some area dealei ships available % □ Check here if intei ested in becoming a dealer for o the above products ° SiSLSLSLSiSLSLJIJLSiSiJISJLSLSULSLJIJLSULSISLJLJULSLSLSJLS>JLSiSLSLSLSi£' because there may be enough fumes in the room to reduce or slop germination when planted. The herbicides should be kept in a separate room and the emul son form not allowed to freeze. All spray materials should b« stored in the original container if possible, in order to maintain identification and keep applica tion instructions. If any chemical is present without identifaction, it is best to throw it away rather than to take the chance of being the wrong one. I have known of improperly identified chemicals killing plants when they were in tended to stop insects or a di sease Be careful in using and stoung all chemicals. Phone Phone 626-8909
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