THESIS ON THE DAILY YIELD OF uae e. bee eons H. E, VAN NORMAN RSH ir - ao: or - J At’ OCT) 727 ws os a ~ ao, CO TG INPLUE Oo > 7 4 au CAUS @ Tne prosress or Seltentivie Aerieulture in the Unit. d Siatus nas been very rayid during tre last twenty vears, The estadlishiuent of exTeriment stations ana the Tuoctiecation of their Sulletins hes a.d is bringing the yractical ian and the theorctical, scient fie ian to a bettor understanding of their relation; of the yart vachn must play in the others ficld cf labor, science nas boos defined as "the truth.” The scientific man or wmetrod, the’ must. © the truthful man or ucthed, Thev are sevcking for bmabv rules and lows. .av ve estavlis’ ed ti at vill always held true v der tre shHi.e concitions, and therecy be reliful to the avuraee worker, the wen who has noithor tliie nor trainings to deduct the law, Lut could use it ts adcvantesc, if estavlisned vrile this is true, tnere is yrovavly mo sranen or investigation ts warrant so fou "lavs" or vositive ascsurtions SS alonm thea line of intluenee of Teed on tre treduetion er miih and Wattor, The Doodur cf steers, Rosca, ce tise lnvors wecer eh more exyeet ccrciticns tran the milk ere butter preeveer, Trwre ig naen less incivicvel verieclilitys in tre tence:cy t: tren there is in the :rocuction -f wilh cna putter, The hos is aa ; ad ‘ ™ A . 4 7 : a * * v «4 dois cn ae x . - “ "eye ory = - ec ceonetitutice tat the Couder av coloct veo Tens of ten or tventy + ~ nN ,~ ~4 - sc a ~ On. 7 eG” qe: 44 a: 4 oye ‘ ‘ “r , “f “o- ‘ vom a 4 ar a . 4", y < ~] 5 ve > » -t, Loa ’ Cu OLA Le ® ee Uy ve Olé, Ly onl LO we ee Ly ak ba Cee! Cla Gillie CxXe CU, 2%, Pp . . - - | ee - ta. . a. ion” 1 ft. . . - os £4. ‘ a d ’ : : set . ro yoy 7 pry Fey ’ 2 TT ON ~_SOOmM. ~~ yr ote “ SS a ei eth WEL ok bi. EL bokeh Lee, eo a wih ro ALLL uN hwo wee lLuay re vill feve ia Vrireoraty incresevite, vite: vill ve rest rin in fonuine (2) a2 conelusicn as to their relative value as fat rrocucers, Kot sc the feeder of dairy cows: he nas a wore intricate rroblein., In an averase sized nerd it is selcom that anv two covs will cat the sone awournt cf fooa, cat it with the sane avi }— or ba ck 4 4 or vVield @ unifroria ejieunt cf uwilk for tne [sod consumed, One nas a voracious aryetitic, cnotrer dainty one; one, a rhlemnatic tevpeoraue:nt whieh is seldom $3 clar.ed or a-ncyed, while the nest is startled anc worricd vy everv unusual noise cr occurence, In fact the iciosynerasics of the cow often seul, te neutralize the effeet of Peed, There “cs been a parked improvenent in methocs of exrerimentation, The errroxiofttion «cf the evurn has siven ;laece to the exactness of the abecck test, tus eivne the cov credit for all the butter sne vyuts in the milk, instead of only tat anount vnieh man is aple to eect out of it by wmeous tf enurn,cte her exreriments not vet v mut this exactness in the results or feedi: re w UG been aitaineca and at rresent seems a long vay in the future, teantiiiec, the onslaught amainst the wall of wyvstery and wicertainty continucs, Here ic therc a crack is wade whien ssoner or later will result in an ening encvling us to sce the Knowledge lying bevond this scoominely lmpoenetrable wall, With the nore of deepening souec one of thesc cracks, if only an imrerceytinle amount, the observations whieh are here reeordemn, vere ade, 4 True aniwals selected frou the ccsllere nerd as tne casis of this stucy vere as follovsi- Alcea oc, Clls A.G.C.C, Rorn Jan,1g, 1°°2. Droyred her Inst ealft tov 03 SOS, a (3 ) e ee ‘ ony OP v om 7? oO. _ ~ ° ° 7 oy rN oO Collese Fouwtje, 2862 H.PLHB. @orn Arr. ls ,ile@ci. Calved tlav 3s, BOS Cara, 8295 R.P.C.T, Born July 27,128°5, Calved Deve,d0, lous, 3 Aica TI and Cara were fed turee tines 2 day and Collere Hourtie Xe ~ ” - wee vr... = ° 4a ann-- y aaé¢ 1e (Celiesee Mouvtie) was turned out . ~~ aoe .. ‘ s a -* ~ — “° at v - ear “ wv" Sal « ~ Nt Prem avout 10 A>. to 2.20 Pol.3 on storniv cave she was only out lows ) ay ." os“ 2. ~ * . AT. . ° evr eve ~ aN -_ ‘ 4 4 Sy - a 4. . ~~ 5 1. Oneveth to crink, The other two vere turnee out at tie saie tiie, but -- . -- . . vA. 7 7 ao > & a ay : ¢ -: “ - = e- a were rut in tee steovle and fed ct nion anc if a v-leasant cay, turned ou e « . -y 4. a & e or * ope =. - ~e . _ -~ . e 5 ° - . Murine tie Lirst six weehs thev were Ted 2 ,ractieceally constant 4 ~ ~ - ou @ ~ oN tg -_~ - ~ = e ration as Pcllovwsi- Siloare, HOY, Roots, Crain, A . 2 re ° i) af at er tt AN1ca [I oOo tL: Ucas, 400" 6 1o- 15 yra- ov ; ‘ + . , om jf Collece MWourvtie., 2 feeds, 50-5 15-5 9,5 con hath) 10% ~ an : a oS Gene cs ixed ° 5 c t! 7, ~ J — oF Tre srain threusnout tre yoriod was the follovize cor 72 4 OPTUS by weleuti- l part Oilnmeal, « parte Corn weal, GS rarts Rra., and 4 3 . - CO ~ ee- . 4 _ ~ . . . Syn rast -. : ayer , + ae . oo? Tre erfort was iwoce te feed as reerlyvy a eonstent dquritity «a: rossi. Je and nav COxternal O1nGcitisne as “1ifoma as vracticacle tat pyue 62 aia nave Cxrcerna CONGLITICNS aS UhLLOTa as la aCLICar Cy, vlad -“~ ® € «. + a 7 + -~ va + ” . * - * . & ote oo d. in *. . ™ < eon the variation in milk ane fst vlelde cue to that cause iisnt ve Glinu- + vy * a - . rynt , 8 “7 - a . -’ ; - 3 Trines 1, 8, and & reresont orarhiealiv the musaber of davs that Collesg Feuwtage, ide II, eva Cara rasvectively, hed iilkod sines calv- e ay n -—~“ oe c. _ ‘ en ? . 7 7” a “| —~ R ewe ins at tie close cf the _ericd of ovsorvation.(Ver.e4,1°°7) Line 4 shows the yortic:n cf the yericd of lactation covered by tvis ovsurvation., Line 7. wats = ~ , -_ Oo + + 4 - a st, A 3 > 27, ; 5 is the muner of .ouncs of ary ivatter couswacd waen cay by Co o SY Houwtje, Line 6 is tre same Por Aica TI, Tine 7 shows the daily tion in Care's milk yield, Tine 8 snovs Cara's consume tion of a Line 9 snovs 7 it 1 0 Ly vv TT ul " " ? wt A 1 na I I ; I. 1 ne 1 1 " w uw LT c At ul ! W hy v ly " ul Ww Ht w W tl uw Cars ; wt LS tt w 1 It it iL HY W a O 1 ~ QO EQ A out vele " Hewator aruik by Collese Mount Hoyo on i! i" tt " Aice II. 1. _ x 4. a rn am” i 7, 3 - . sytem, a--- 4 Tovie I gives the viele cf Pav, the Gry iwavtor consiumed, a = 4 5 «2 vu 4 Ne. .@ cailyv variation of inilk vield of College Hounrtie, t . 4 ie rounds cf dry watter to wake round of Fat, by weekly periods durine the ry ae i a7 ‘7 y ne on™ re yy Sn . re o7 nw” were ver 5 ys can “ eo; last SOvVvey Woeenis Wwaer tue L@Qrd WoOS vv OLieied Gac oa It is netiersle tinat the rouncs cf crv waiter per vound of 3 . ~e WT, - +- 4 “ mets, a7.) an : a“ AAS a | a) - reasonavly constant tyurouesnout the porioc, Tor Aida TI enc Collere T wv - ears ; : . 4 os, 5 .s x ’', 7 ~ +8 rN . ~ qo - Hounrteve, while Cora reauired cn inerecsinglyv loree ai.ount of f eee - e 4. es € a ~ yA 7 y- ’ s+ : 4. Ty re ~ ~ 7, . ae "5 ope -_° «~ “~ Teck over wav of tre rreeedine, For the week ondine “iareh 10 . . . 2 . . af «= os , o = - ae ... - - . Te e. recuiro ¢ tcarlyv ce - incre cr dry wa ter yer sound cf fat then fo -* “ye 77 . ~ eps - yt 4* BY os 4 - + . - 7. mM S~ yy s se . -*> -? weeks vreeeding, or even te suceedines weels.The falline of7 in 3 -7 -. 7 AHA a a7. . . 7 . a 23a. Re ms ~~ .. -. ‘ —~ a yield oF Vet, wiser t be cvuareoa te the evoanse cP iitlkers, Tut a : ; w~ ~~ = an 47. - @ 7 eee _° . 4 920. .- - s 4. ~ ~~». to lines 27 a°a 11 0. tie @eort, suovws wnst the conswtTtion of + s~ | f* n-aA 4%. - .n ae a i 4. 8, ra = am an | mr . +6 co +4 * 4 [TH PEeLOove tee acreanse nena Viele eL LA’ 2il.S Sill. eEets vite cy p—2 mQ () co iy CS and - } “- c w -—4 §—4- ~~ +? ‘@) “1 — 4 m5 C2 c) 3 ? -—~ c on 03 C c+ © c wid } 4 09 ry i) to a » ’ oN fie c+ j (3 m ry is _ ( Cll a -- _ Te, eTeice than te the cuanee cf milkers, Aida IT, WGA GNalng. Fat, Dry vtatter, Dry Vaiter to 1 ‘Pat rebv.10o, 8.02 196 .ise cit .46 "17 8.54 198 .80 25 .SO N24 3,54 193.80 35.01 ve 1 NI Oy e a) oO 2 b> e C7 dN) CN e £9 pI RY Hy ~} 7 Oo I OD D w ~J N bs e Oo Nw rf to oS ‘4 Oo SS Oo C7 }Y Oo ( e@ 2) WN bo o) oe }— NN "617 4.08 302.60 £9.66 "234 “18 197.635 47 74 “ar, 3S 4,30 205.785 47 .S3 "10 44095 155.03 “65 (08 "17 436 205 .56 47 95 "4 4.455 206.335 “7 7 Cara, r uv e ! oY jp NI © e © &) a O e oO (9 =) CO) WN 232 p—! ~J Oy O 20.75 "24 8.14 170.08 20,03" Tavle I cara, ree Ve Na ° le Veour encine, Fat, Dr a¢ weil e 3 Individu in O ry and cecal accordingly, The ndividualityv, a a< - - - $ a - a % chliy four days in thirteen work all three covs rhnetkher saie influcnces On other daxs, two cows snow an increas But it is not the seme two, Eouvtije inerease one pound each while Way = LO ua II and Cares yrevious cevs'ylelac, while inereece two suececdinme devs wrile GEaVS, miiblh three, yleld.qf rrow all y py Flee Ps We ™~ - yield ty Aide UT t oc 5 +5 m9 cr. ~ "Fr 57 AF ~~ ri LM anew, CM tiie ish. ality , but yielcs an Il acc Cara fall cfLF the wore than the yre vViela by eaern of the three, Tut on Foo loth tnere is prectical v no vartatisc:, on Jar.g Aica II falls off, Cara hol¢cs ner own, and Collere Houvtde shows the lest marked ineronee (2 Giwy cay in Pour welts. Preoi Vliis e1ert vo eam t eorveluace wheat tee scusc invluences yl.ieh ers the cecre Gea wilh wielis nteoeet te See rosvit on the fat, ver ern the stretemernt we weceo cre proevec thet the fat is less variseio than tre milly on den lf, Ceres eic Collesee Vouwtie sive icere wilh, Caren less Pet one Gollese Fouwtt7e tie ecio, tert cules Cie the precacing, wh La Nice ctives Loos wilh cuco were Pai, vhrcuemovi wre verive there is this ceometent evicetcu ef lack cP veriatvion ove te @ sencral rele, an influ- mee ravine a sinilay ePrect on ali tyeree covs, The werhed umifvormityv it: the viel vy GCotilese Houyrtje nav Le enarce- feristic «vv te cow anc wey Aliso Le ovr to te Pact that, it is lote in rer yericec of lactation one thet ner viela is ratiecr a winimui ote, TOQla tT the cows snow a@uv variation. wnien wisht reasonably ve laid to tne ehaivee oF nmilhers on linren oc, Tt is wnfrortimate toat a ona se Vrouw threes to ty: Teeds a cav was wece with Core and Aida TI on “aren lith as it adas a very cisturbins Factcr tc the rroklon, tee cause cf the iarkea rise anc decline in Cora's vielc veetweon liar, © ond 14th, Consulting tre weather reeorgs Rovt by Dr .Nedzie's Gaerartyient, we rind the ccladust weathor of the reriodg of this ex verinent was fron the ' : woad toe the a7th cf Jahueary, when at no time did tre thernouetor resister above 1% desrecs and tvo days it aida net so avove Pive, The ininiiaus aurineg this time varied Frou -1 on tne 27tn to 17 on tn 2étn,. The Tat yield tis.e, wv none of tyre > a Tyg: . 7 VOL Cit wi ent WC d v 4. u 7 ner hienest wilk cqown clos ZOTO iwarn, . Lp . srydtee +". alc ae Lo ne bd ¥l:Q0 raw Wing or waria, br oa tne foll "ys y “~ + Prevene 4 rr LO ~ Ail and accuracy TAA + vy ” “yy ) Lica ed bv cther thines tran “ones aivterentliv to Sti, ne AD all o) OWS Wag on Jan gectnr, but 7 rise of soise 15 aes 1. Ve anther a om ~~ ™ . i Ovul Wnen tec food covcs stouwacn, yr iO bre y Slog Cd . a ww iS () KS ~ *@QY7 4 - - a. 3 jad © u Cr \ ’ i os . ~ VW Olone th 2 . 4 4 ae i. > . ~™ oy : yt Ne V2.8 40aGNe OLnSer,. we ici) 5 « COWS ° ¥ influcnes mA yTw vu SCech. GLO exerted 3 . u 1 oll « oN ENT eS a Qe de WD any iwiusual varia- A ay ‘ Chm a) “rane pe ce Lia CS C Gay, WL ith the SCVeCT wr re @. Char ercury co 2 tisse the covs vere outc a 44 L. 46° a ys 1t oT TEM WWOoa owing out of ¢9) > o> * 7 4 “\ ¢w Prerenitlvy on succeocdings PS oN aualitv, sic ovantity to no arparent enuse temperature, A 1 -_ Climinatins diam +- is still left for CJaua 8 It vr a “~ © UCR nov t its 7 J or now cuienly cy a/ crovle ytele inicrestinge dcote, ia a’ a. as ry re 7. ae _ ig i