A PIG-BREEDING SUBJECT.

Dominion, Volume 3, Issue 928, 22 September 1910, Page 8

A PIG-BREEDING SUBJECT.

'■■-y: : [ :; ;; :> ; .THE;SIZE;pf.;LITTERS.;. :, ; 'mianj' writing :to ''the 3 : -0■ :: ■"Breeders' ißazette" ;bn the subject ,of. i'/;:;": .the'size.-of-litters,;.says:—-.::-.'-' ■-•;.; : ;'''/ ••: ■j',;;-','.' ~''lt has'long been hold, by practical S: ! ;>'"- bfoeders .that the. size of: litters is a f-':-/.;.-;. character -transmitted from /parent to : -\yndbubte'dly.-.tbis'. ; is true to y. ■:;'-..ascertain'estent,;but-the olcUime preX's, :v v;j^dic© ; against'•' buyilig .breeding'; animals ..'of;;-';lfom.smaUi.littersJhas .'b'eifiii /bveresti- ;;,:;; V/ mated. .' It seems-that, from .the:stand-.." -;';.;■'... poiiit'.of prolificacy :the effect: of. -her.e'Hi • .' ■'■'."•ty'-:^is' not,'of 'i material consequenc(i : ;in H" :;,; ■ Sowsi,from' £ji/. V'BTiiall; ... 7 'i:;.'. duce,: > small ■ litters nor.. is. there . any ;~; >■;.'.•; certainty' that ■ sows-'from large-litters; :v,i jS will',produce large.' littersiy In - tabulatSR?; I ;-ing ; ;the■'-,-, 200 : animals: ,/;^ : ;-:'we,yiaTe found'that: there- is. a : eorrela-v-.'f-";3H J tiop, hetweeiivthe': size of-:fche: litter of: and' : bf : ::l;he; : offspring, ■ : biit' ■> ..this/correlation ..even under, the inost : .';'y;': : 'h extreme bases..of .variatibn'amouhtedjto. \j -'■'-. butehalf a pig■ per. litter.. 'The' average I'.y -.'.': y'ar'iatibn : for -JaliUtfers-was-much. less. : tiffir- /which, trace';bact:'k" ,; ttieir /."/ : i' rp.edgree te' : small..litters' i:?-/ ''-'character; ahd," they:, should: be, S;/i;-/r Heredity/is;of ///x'/Zhr^er/thai^/the :i:pork:; ; ;producef/ -vj;:/■; This-is, shownAhy/ the:, facte that '.tho;;jrcK w':/.'; ./;:,Mcacy''bf7'Pola'nd-Chm only ;7.49■ pigs'-rjer/'litter l-.'i period: of "twenty :-ycars,/while ;/'/.'//iih/the^;case-;of^ j the ; ;PurW j/: ; ?;//. variation/has'mb't = been /sufficient 1 to.; :be' !t///; viapßrwjable;: ; /;This/ may!: be/du^;;to : ;//":v/ 4 ;s/./;V'i' i ,3iot laid :s.tress..uppn:pix3lificacy. -since the : ': ; ;/-:'-'breed/non' over pigs; per ;/;/ : ;/v; litter/ : ■' From.' the/i standpoint; of;' ■■:. the }//' j/7>- breedbi', I whose /-■//>/; 'tain AbreedJ "it/is SS- to;/discrirhiTiate3>agaiiist'/animals'- ;.'-/•.;/,;,': small litl'ers, .butiforsthe 'porlc /-,//;duceriv who'.p'rbmiscubusly.'/seleets. his, ;/;?■£;/ breeding;animals from '■j;'V. : ;:S/;/ : ' tergdity./y Oftratimes v vhoaTS'fromv small ': /caiinot ) be/ sold /wlieu'ireally :■ siicli, i;j;-:/ ''l^W^^generjJJj/'.prdyo.'quitoys^isfacr^ /;:;// /'/'JThe/importaht^^acWrs'^wM v J..:' /.--. the'. farmer; has ;tb/ obntend ■ are/regular-: :/'.--'.. ■'',;,ity-'=bfvfee^;BupplyV-.sys^mat^ :/// //jahdlmoper .feed;:'/Their^apphcatibn'is': /.v'.u.;'/:merejy./.'a::m and; !>://-.:> -judgment; /.One;bf/th'e/cbmmbn^sbiirces^ :/.'/;■;/-'of\:$foUble/is.'high^on^itipn^ /'/■//:-. irig^time/./'This^hm i/; '&■■'■_. :/of :_'; the''; geheratiye;/organs;, /,/ It/is.:fbr yh 'ii. './thislireasohvthat' sows/generally/pfbduCe;; ;///// Zpigs/lacking;in : 's //'.//: /or/^rliaps/thoy/may; hot''-.breed 'at : ,all.". results : aie'obtained .when'thet4'/'/ ;ahimal /is; in; a; strorig/;;yigorousj //and' /'.//.;.-;-;gai^^cbnditio^:-: : ;'' : /ExerciseV is; import-.; .;/J'/;.i;.> ait:';;/Confinement :.weakens /thevability/ ■/:/■/;/of l : anayfr'fe^ /^///•^Zweak^co'n&tiohT^ ; :results -in/small/.weak/pigsv'and; '/;-.;;.-/Bmall litters;/:•Tp/'p^r^uce/yigorpusl'lit-!, ///./.ters/both'/the nialb/and;^female/shipuld, ;S-/:/ ';..;. i«ceiye; : plenty of^«xercise/pnbirJ.:Wrthej '0:V/vy:'/tinie1l;bf,, bfe^i^;:///*"-:;;///;/.v/;/5/'::; ;i^p/ Ws£ ' /-S.'JBrobd; sows \ f ed; ; &. ;<»ra7dietVare ; shy : ; In:the; : cbrhbelt\such ; a/diet" :%/:'/ IbasiiJiminished/tbe'fecundityJbf/swine: ;|/:;.',://by sows/top'; fat^^Erom^ :«/;://'thej/steiidpoin^ L :Me][mbre S5/%:v^an v :selecti6)rV!'/;:v/ft