Show HEEL FLIES ARE CAUSE OF LOSSES most important insect problem for cattle owners prepared by tho united stated nent ot agriculture control of cattle grubs or heel files Is one of the most important inflect problems ft ath which owners of cattle of all classes have to deal say the authors of a bulletin issued by the united states department of agrical ture the cattle grubs or as they are otherwise known warbles or wolves cause losses estimated at from to annually the bulletin traces the life history and habits of the insect and explains methods of control the adult form of the insect the heel fly Is rarely seen although its presence cattle and causes them to make frantic efforts to escape why this Is so Is not clear tor the insect has no mouth for biting and it lays its eggs on the hair of the animal without causing pain two varieties are known the common cattle grub and the northern cattle grub the common grub Is found over most of the united states the northern grub Is the more persistent and annoying in its attacks on cattle and Is found only rarely in the southern states where infestations commonly die out without treatment it Is most prevalent in the northeastern states the cover page of farmers bulletin F Is something of a departure from the usual federal publications five small drawings caricature the efforts of a cow to escape from a buzzing heel fly the injury to the cattle comes through their frantic running caused by the flies and through the parasitic action of the grubs which result in les healthy and thrifty condition of the cattle and in lessened milk or beet production serious injury to the value of the hides Is also caused from the holes cut by the grubs the bulletin gives information as to methods of control extraction of the grubs by hand or with forceps or killing them by applying insecticides it has been found that fairly local control Is possible the flies apparently parent ly do not migrate great als the authors however believe that because of the serious damage the insects do it may eventually be come necessary to carry on a system of general eradication either nation wide or over large areas until such a campaign develops they advise each owner to control the insects affecting his own animals farmers bulletin 1500 P cattle daubs drubs or heel riles with suggestions for their control by F C bishopp G W laake and IL W wells of the bureau of entomology has just ben published for free distribution A copy may be obtained by writing to the united states department of agrical ture washington D 0 crossbred pigs often excel the pure bleds crossbred pigs very often excel purebreds in vigor and ability to make rapid and economical gains it la usually not advisable to use these for breeding purposes since their offspring frequently lack uniformity in ape one should certainly not mate crossbred bows sows with a crossbred boar it these bows sows are used for breeding purposes better results should be expected if a good poland china or duroc Is used than if a boar of some other breed Is used M doubt you will secure good results by mating them with a poland china oar nl we are inclined to believe that pure bred bows sows will prove more satisfactory tor breeding purposes than the crossbred bows sows 11 II J gram llcy of nebraska satisfactory bleeders breeders Bre eders product of ton litter some feeders are inclined to feel that feeding for ton litters in market production may be all right but that capacity feeding will not prove satis factory for the production of breed ing stock the latter la not true of hogs lf the stretchy type are used and the high kinds of feed are fed type of hog and kinds of feed rather than amounts will deter mine whether they will develop satis factory or otherwise some of the best breeding hogs ever produced were products of ton litters and practically every purebred association in the country Is operating cooperating co in the devel of plans for special alon for hogs which have made ton alf or very similar records favor vaccination while the last serious out breiL ot cholera occurred in 1926 proper precautions should not be neglected athla summer plowing under old hog lots prevents the spread of the germs which be lurking in the refuse around the lot the ground should be planted to some crop tor a season before placing hogs on it again hog houses should be cleaned out and thor hughly disinfected dis by spraying with a standard disinfectant solution at leant talca each year |