THE AGRICULTURAL NEWS. 



How Ticks ' <i 



Reduce the Milk Yield '^^ h 



An Important Matter for Owners of Dairy Herds 



CATTLE TICK 



V)m following Information h laken from Farwen' SuUelin. No. 639, isaueJ officially hy the "Deparlment of Agriculture of the Uniled Slates. 



The aclusl anwunl of harm which ticks do to cattle is no longer a mailer of mere conjecture. But tKc need of definite knowledge on this subject 

 led lb* Deparlmeot to conduct iome ezpclimenis on the effect of the tick on milk production and on the body tveighls of dairy cattle. 



RESULTS OF EXPERIMENTS 



Forty cows were divided into 2 loU of 20. each of which was producing practirally the same amount o( milk, and was given the same feed and 

 care for an average of 152 days, during (he season most favourable to the development of ticks. 



One of the lots in each experiment was allowed to become infested with licks, while another was kept free from them— in one case by spraying 

 and in another by dippisg. 



The main results of tlie experiment were as follows : 



1. Cows carrying licks did Dol hold up so well in milk flow as cows kept free from licks, and did not increase their flow of milk when -the 



feed was increased, as did the lick-free cows. 



2. At the close of the experiment the cows lightly infested with ticks were producing 18';;r less milk than the cous kepi free from licks, 



practically IJ pints less per cow per day. 



3. Al the end of the experiments the cows heavily infested with ticks were producing 42.4')i less milk than the lick free cows, or nearly 



one-half gallon less per head per day. 



4. During ihe experiment period of one of the tests, which included 20 cows, the heavily infested cov.s lost an avera-^e of 9.3 poundt in 



weight, while the tick free cowi gained an average of 44.2 pounds, although both were fed alike. 



THE COST OF FEEDING TICKS 



If a pen keeper or dairyman with 20 cows, each producing 8 quaris of milk a day, should let them become lightly infested wilh ticks, the milk 

 productior. would be decreased lo the extent of 1 1 quarts a day for each cow. 



Al as low an estimate of 20 cents, a gallon or 5 cents, a quart, this would amount lo 71 cents, or f 1 .50 for the entire herd of 20 cows each day. 

 II the tick infestation were heavy the reduction in the milk yield would be 3.5 quarts a day for each cow, equal to 17 cents, in milk values. 

 This would amount lo f 3.40 a day for the herd of 20 cows. 



The follovong ii an actual experience of a dairyman in a very heavily tick infested territory, which strikingly illustrates how heavy is the 

 coat of feeding ticks. 



Laie in the teasoo when hu cows were covered with ticks, the cattle were dipped and the licks killed. One week afler dipping the 42 cowi 

 ia bit herd gare 10 gallonj of milk more than before dipping. This was an increase of 16.6'" and as the milk was bringing 35 cenli. a 

 gallon the extra 10 galiooi w«r« wortli $ 3.50. Hence, as a result of being freed from ticks by dipping, the same 42 cows, on the same feeli 

 proiatai atn aik ntbamt ta iacfCMC the dairyman's profits by $3.50 per day, or ^1277.50 per annum. 



IT COSTS MORE TO FEED TICKS THAN TO KILL THEM 



D fm W»*imi m4 mMM •hmti wCQ work together ihe ticb can be eradicated. Complete eradication, and not mereij lappnMiMl, imtii h| 

 4h ifai of Wy OWMT if OMlk TIm flipping tank, or spraying machine, makes the work easy, effective and practical. 



COOPER'S CATTLE TICK DIP WEST INDIAN AGENTS . 



Ha, reeeior J the official approval of the following CourttH^II 9T.KITT5I 3. L. Horstord & Co. ANTIOUA : llennoil. I»r, ,oo * Cfc 



JAA1AICA: I). MeoderaoD & Co., klnK.«(uii. 

 llolon of South Africa, Northern Khodesla, Bratll,~ BasutolaiM, iikenada: Tbomson, liankcv A Cu. 



Njfl.aUnd, Swaziland. Soulhern Rhodesia. Mad«;-nacar. , "^''^^ir^f^A^lX^f W. N°Twrna." N°"^^^^^^ 



Bflllab East Africa, German East Africa, Portuguese East Alrfct, TRINIDAD: T. Qedde. arnnt. I'ort o« Apain. 



IIPITISH OUIANA: Sandbach, Parker & Co. 



Porlojuese West Africa, Egypt, Argentine Republic, Queensland, bt VINCBNT: Corea & Co., KloKsiown. ni-;vi.S; j*. n. ntnidnc. 



tni.cd Stales of America, New Sou.b Wal», „oNT5bK: w'Tu.iXn w^ VoAUMCA: iloi". t;.'A:r;:mr.,oo. 



-^ Northern Territory of AuMralia. St. LUCIA: Damartf 5on5 & Co., C«.»tricg. 



Manufacturers : WILLIAM COOPER & NEPHEWS, Berkhamsted, England. 



BRANCHES : Toronto, Chicajo, Sydney, Melbourae, Auckland, Boenot Aire», Mo»l« Video, FWta Ktaat, Ea.1 London, Odeisa. 



