THE AGRICULTURAL NEWS. 



How Ticks 

 Reduce the Milk Yield 



An Important Matter for Owners of Dairy Herds 



CATTLC TICK 



Vhe following information is taken from Farmers' bulletin, A'o. 639, issued officicUy hy the Depi^rtment of Agriculture of the United States. 

 The actual amount of harm which ticks do to cattle is no longer a matter of mere conjecture. But the need of definite knowledge on ibis subject 

 led the Department to conduct some experiments on the effect of the lick on milk production and on the t-ody weights of dairy cattle. 



RESULTS OF EXPERIMENTS 



Forty cows were divided into 2 lots of 20. each of which was producing practically the same arr.runt of milk, and was given the same feed and 

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



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

 and in another by dipping. 



The main results of the experiment were as follows : 



1. Cows carrying licks did not hold up so well in milk flow as cows kept free from ticks (^id did not increase their flow of milk when the 



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



2. At the close of the experiment the cows lightly infested with ticks were producing 1£ less milk than the cows kept free from licks, 



practically \^ pints less per cow per day. 



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



one-half gallon less per head per day. 



4. During the experiment period of one of the tests, which included 20 cows, the heavily infested cows losl an average of 9.3 pounds m 

 I weight, while the tick free cows gained an average of 44.2 pounds, although bo:K ^vere fed alike. 



THE COST OF FEEPmc TICKS 



If a pen keeper or dairyman wllh 20 cows, each producing 8 quarts of milk a day, should let ''-^m become liyhtly infested wllh licks, ihe railk 

 production would be decreased to ihe extent of Ij quarts a day for each cow. 



At as law an estimate of 20 cents, a gallon or 5 cents, a quart, this would amount to 7>- ceTir*. c-r ^ 1,50 for the entire herd of 20 cows each day. 

 If tlie tick infestation were heavy the reduction in the milk yield would be 3.5 quarts a da) for e.ich cow, equ.il to 17 cents, in milk values. 

 This would amonnt to $ 3.40 a day for the herd of 20 cows. 



The following is an actual experience of a dairyman in a very heavily lick infested lerrilor\. which striking!; illustrates how heavy is the 

 cost of feeding ticks. 



Late io the season when his cows were covered with ticks, the calde were dipped and the tick' killed. One week after dipping the 42 com 

 is hii heni gave 10 gallons of milk more than l>efore dipping. This was an increase of 1 6.6 < and as the milk was bringing 35 cent*. • 

 gallon the coctr* 10 gallons were worth $ 3.50. 1-Ience, as a result of being freed from tick; h\ dipping, the same 42 cows, on the same fee^ 

 prodooed eiifa uSk rafiatat to increue the dairyman's profits by f3.50 per day, or $1277.50 per annum. 



w 



rr COSTS more to feed ticks than to kill them 



poB keepen mmI ertala ownen will work together the ticks can be eradicated. Complete eradication, and not merely siippr«iMa> 

 ik* aba <f CMiy Omar d( Gad*. Tlie dipping tank, or spraying machine, makes the .work easy, effective and practical. 



COOPER'S CATTLE TICK DIP 



Has received the official approval of the following Countries ; 



Union of South /ifrica, Northern Rhodesia, Brazil, Ba?utoland, 



■Nyasaland, Svxaziiand, Southern Rhodesia, Madagascar, 



British East Africa, German East Africa, Portuguese East Africa, 



Portuguese West Africa Egypt. Arget^tine Repiihlic, (jueensland, 



United States of America, i New South Wales. 



Northern Territory fif Aufstralia. 



Mamfacturers : WILLIAM COOPER 



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