Show Records Useful e in in Cow COVI T Testing exult All MI Improvement in D Dairy allY Herds Must lust Come From F om Feeding and C Culling Prepared l by the United Jolted d Sl Stones t x D Dr or of Agriculture p Tho flin rIC dairy herd Improvement ement asso ns o association records s are a gold mine of ot ful useful ful Information use use- Their purpose Is two fod f fold to to d-to to test teat est the tle two two- cows and to pro prove tIe the sires says J T C MCDowell ell Do ot of the I bureau of dairy Industry United States Department of or Agriculture Foam a study ot or these records he 1 tIlls finds the cows having lug an am aver aver- Ige butterfat t pro production of pounds t year ear mat make ma- ma maan an average Income over o cost O t of feed teed of 1 14 I those producing 00 pounds per year car return 55 33 jj over cost of or feed feet The next pounds In Increase crease CIMe In production per cow raises the Income Inome over o cost of ot feed to 00 G the tho next neat to and the next to 1 iS Briefly stated as ns butterfat pro pro- elI production increased from pounds to toOd Wit OU Od pounds per cow the lie Income over cost of feed advanced all from 14 ell to toliS liS or as tat butterfat production In- In Increased increased In Increased creased five n times the tho Income over cost of feed fele Increased thirteen times Evidently E It pays to keep good cows Source S of Improvement All 1 dalr herd dairy herd Improvement he sn says s 's must come couie through culling cullins f feeding and ond breeding Through the dairy dalty herd improvement ement association records the dairyman Is enabled to cull out his low v producers to feed reed the remainder according to known productIon production tion Ion and to breed intelligently When the lie production records of from 11 the e to ten unselected daughters ot of a She Ire Iro are compared with the pro production records of their dams the breeding value of tile the sire Is indicated It If the daughters records record are unsatisfactory factory the sire Is condemned A dairy ry cow Is condemned by her tier own record So 0 far the association records record have hUfe proved pro about al out COO dairy bulls Of these e euly ul uly third one brought big gains In the heeds he ds In which they were used and third one actually lowered the pro pro- production production average a of ot their herds Only one oue bull In six was alive at the time he was proved Some way should be found by Ly which all nil well-bred well dairy bulls can be he kept alive all until tine the rec- rec records rec rec- records records of their daughters prove pro their value alue Then by oy means of ot a cooper cooper- cooperative co e bull association or similar organ orgon organ all meritorious proved pro hulls bulls should hould be kept keIt In extensive use as ns long longas longas longas as they live e 01 or are fit It for service senko Proving Meritorious Sires Tine The The proving pro of meritorious dairy aIr sires In large numbers Is one of the great problems before Lefore our dairymen tolla today When farmers have hn e the prop proper er appreciation of the value of or the proved pro bull we shall be able to prove hundreds of dairy sires Ires each year ear In our association work Judging from the re results obtained from rom the bulls nl- nl nl remly proved plo third one o of the hulls bulls proved pro In the future will be highly meritorIous From Ft-cm the extensive e use of these bulls our dairy herds will inn inn- Im Improve m wove prove rapidly and average a production of f milk and aud butterfat per cow will reach higher levels than ever eHr before |