104 POULTRY PllODUCTION 



Iiinis were used, never less than ten montlis (if aire and from 

 that np to fourteen months. Stewart and Atwood, on the 

 other hand, refer to their pullets as early hatched. I'he 

 three-year-old hens, they state, were st'leeted on the liasis of 

 vi,i;-or. It is ([uite e\-ideiit that there is need for more exteii- 

 5\\Q records from all the breeds than is now availahlc. 



7"able XXII — WioiiiHTKD Mew Reproht-i tive Iniuces vok Mm.es of 

 iSi'EriFiEi) Ages Mated with 1'"e\e\ees ok all A<-,es. (Peaki.'s Data.) 



Ages. Weif^hted mean RI. 



Male = 1 iiialcil with VV of all ascs . , 12.S(jS 



M.ale = 2 ii.alc.l wilh t"* of all ages . . 10 214 



Male = 3 uialril wilh V? of all ages ... 'J Ii2.'> 



Table XXIII. — Weighted Mean Reproductive Indices for Females of 

 Specified Ages Mated with Males of all Ages. (Pfarl's Data.) 



Ages. \\'fighteil iiu-an ];[. 



Female = 1 niale'd uUh ' ' of all ages 12.7li.') 



Female = 2 niared with ^•^' of all ages .... ll.ofio 



Female. = .3 iiialed with ■''c' of all ages . 11.4.5.5 



Table XXIV. — Weighted Mean Kepuoductive Indke.s for Matixgs of 

 IxuivinuALS of the SpE'Tfiei) Combined Ages. (1'eaiil's Data. J 



CornI»incd ages of mated Number Weighted mean 



individuals when mated. of cases. RI. 



Two years . ..... 79() 13.0S3 



Three years )9(j J 1.121 



Four years 113 11.119 



Five years ....... 12' 7.4.5,S 



Six years , . . , 3 15.GC7 



A record of the age of a, fowl may easily he indicated hy 

 toe-marking each generation as it comes along in eases where 

 pedigree records are not kei>t. Pjy punching a diiferent 

 comliination of holes in the wehs of the feet each year a 

 convenient ;ind iiei-m.aiieut nieans of estalilishiug the age of 

 any indi\'idual in the ihick is furnished. 



luihridiuil ]'tiriati(iii In Aiiiimi} I'rml iictiini . -()\)\H-vmi\\\- 

 reports the iudi\-iiliial yearly records of production gi\-cn in 



1 'Die rases ao.' ( uu frw tn L'i\r Irllalile rejlllls after a ci iIi, I lin,., | a^'r ,,f f,,ur 

 >'ears. 



- Marjhuid Bulletin No. 157. 



