62 



BULLETIN 1090, U. S. DEPARTMENT OF AGRICULTURE. 



Table 12. — The average birth weight of all young born {dead or alive) in the different 



inbred families. 



[The average in litters of each size and the index (see Table 9), 1906 to 1910 and 1911 to 1915.] 







Size of litter, 1906-1910. 









Size of litter 



, 1911- 



1915. 







Fam- 















Index. 















In- 



ily. 



























dex. 





1 



2 



3 



4 







6 





1 



2 



3 



4 



5 



6 







Per 



Per 



Per 



Per 



Per 



Per 





Per 



Per 



Per 



Per 



Per 



Per 







c't. 



c't. 



c't. 



c't. 



c't. 



c't. 





c't. 



c't. 



c't. 



c't. 



c't. 



c't. 





1 



99.1 

 108.1 



78.7 

 86.3 



72.1 

 79.1 



59.5 

 71.1 



72.5 

 63.6 



"58." 7 



74.3 

 82.6 



103.9 

 97.8 



89.9 

 82.9 



65.9 

 67.1 









76.3 



2.... 



59.4 



60.5 





73.4 



3.... 



111.4 



91.7 



79.5 



70.8 



67.1 



57.6 



84.6 



104.5 



88.7 



73.1 



67.0 



49.5 



27.8 



79.7 



7.... 



100.9 



91.3 



78.5 



67.0 



67.1 



58.7 



82.3 



103.5 



90.5 



78.6 



69.0 



59.8 



56.7 



82.7 



9.... 



107.6 



99.7 



82.2 



76.0 



65.0 



64.5 



88.8 



107.6 



94.2 



79.3 



75.3 



64.5 



55.5 



85.5 



11.... 



105.7 



90.6 



81.0 



74.6 



63.2 



57.2 



85.1 



108.6 



95.3 



83.5 



67.7 



59.2 



59.5 



86.4 



13.... 



107.7 



101.2 



83.0 



76.0 



71.1 



64.1 



89.5 



113.5 



96.5 



82.7 



71.7 



64.0 



61.2 



87.7 



14 



100.8 

 122.8 

 105.7 



88.5 

 90.5 

 86.4 



80.9 

 83.0 

 74.1 



69.0 

 68.4 

 68.6 



67.8 

 40.5 

 63.2 



66.2 

 "55." i" 



82.8 

 86.3 

 79.9 



103.7 



"ioi."6" 



93.3 

 94.5 



88.1 



74.3 

 91.2 

 72.3 



69.1 







81.9 



15 









17.... 



62.4 



53.8 



59.5 



77.9 



18 



112.4 



95.3 



85.0 



71.0 



69.9 



56.2 



88.0 



110.1 



95.3 



83.2 



70.7 



69.0 



47.0 



87.0 



19.... 



110.1 



85.5 



78.7 



75.9 



68.9 





83.3 



112.8 



97.1 



80.6 



65.4 



71.3 



62.8 



85.5 



20.... 



109.5 



85.3 



77.6 



72.5 



62.0 



59.5 



82.1 



102.3 



94.0 



78.0 



69.5 



62.8 





83.5 



21 



112.0 



96.7 



82.2 



76.2 



60.5 





88.3 



96.1 



87.8 



75.8 



65.4 



57.5 





79.4 



23.... 



103.6 



96.6 



83.0 



73.4 



67.7 



64.5 



87.2 



105.3 



91.2 



78.8 



64.0 



58.5 





82.2 



24.... 



103.8 



89.2 



77.8 



67.2 



62.9 



59.8 



81.7 



100.1 



81.6 



71.1 



62.2 



59.0 





75.4 



31.... 



111.9 



95.3 



82.3 



69.3 



61.3 



52.8 



86.6 



107.0 



91.9 



74.4 



67.5 



59.5 



54.5 



81.5 



32.... 



105.0 



90.0 



75.8 



68.9 



57.5 



50.6 



81.6 



103.1 



85.5 



74.8 



62.1 



56.8 



47.8 



78.3 



34.... 



94.5 



93.3 



86.9 



83.3 



65.0 





88.9 



96.5 



91.6 



81.3 



73.0 



58.5 





84.3 



35.... 



104.5 



90.1 



76.0 



69.0 



59.2 



55.1 



81.7 



97.6 



94.8 



81.0 



70.0 



63.8 



54.3 



84.6 



36.... 



107.4 



88.9 



77.9 



70.2 



63.2 



55.5 



82.6 



105. 3 



91.2 



74.1 



63.0 



62.1 



53.4 



80.1 



38.... 



107.2 



91.1 



81.5 



71.0 



63.2 



57.0 



84.9 



118.5 



98.4 



81.9 



69.6 



62.2 



63.7 



88.1 



39.... 



95.4 



83.9 



74.1 



65.6 



48.5 



44.5 



77.5 



96.9 



83.8 



74.8 



63.5 



53.5 





77.5 



Table 13. — The average birth weight of young raised to 33 days in the different inbred 



families. 



[The average in Utters of each size and the index (see Table 9), 1906 to 1910 and 1911 to 1915.] 



Fam- 



Size of Utter, 1906-1910. 



Index 



Size of Utter, 1911-1915. 



Index 



ily. 



1 



2 



3 



4 



5 



6 



1 



2 



3 



4 



■ : 6 



1 



Gram?. 

 104.5 

 110.7 

 121.2 

 106.5 

 110.9 

 114.5 

 119.0 

 112.2 

 124.5 

 107.1 

 112.0 

 113.5 

 110.7 

 118.9 

 112.0 

 105.4 

 113.3 

 107.7 



84.5 

 107.8 

 107.4 

 107.6 



97.8 



Grams. 

 88.9 

 93.2 

 97.4 

 95.5 



101.6 

 95.6 



105.4 

 90.0 

 90.7 

 87.3 

 97.7 

 92.5 

 89.4 

 97.3 

 96.6 

 91.5 

 96.5 

 93.0 

 95.7 

 89.9 

 91.7 

 93.4 

 88.3 



Grams 

 74.8 

 81.2 

 82.4 

 81.3 

 85.9 

 83.0 

 86.3 

 83.7 

 85.7 

 76.3 

 87.1 

 83.4 

 83.1 

 84.1 

 86.3 

 79.3 

 84.2 

 78.3 

 89.1 

 78.7 

 82.3 

 82.4 

 75.7 



Grams. 

 65.9 

 73.9 

 72.1 

 71.1 

 78.9 

 77.8 

 77.9 

 72.8 

 69.0 

 69.9 

 74.0 

 75.7 

 78.7 

 77.5 

 74.8 

 70.7 

 71.1 

 70.3 

 83.1 

 73.3 

 72.3 

 76.1 

 72.0 



Grams 

 72. 5 

 64.8 

 71.7 

 68.8 

 66.9 

 67.9 

 73.5 

 71.0 



Grams. 



"ho. 7 



61.5 

 63.3 

 73.1 

 63.7 

 64.5 

 79.5 



80.2 

 86.3 

 88.7 

 86.0 

 91.7 

 88.9 

 93.6 

 86.3 

 87.7 

 81.4 

 90.1 

 87.6 

 86.9 

 90.2 

 89.7 

 83.9 

 88.2 

 84.1 

 89.4 

 83.9 

 85.6 

 87.0 

 81.0 



Grms. 

 112.0 

 102.1 

 114.5 

 109.2 

 120.1 

 117.1 

 119.2 

 105.5 



"ids." 6' 



112.6 

 120.5 



105.5 

 98.3 

 109.3 

 100.7 

 110.5 

 106.7 

 102.2 

 107.0 

 108.7 

 124.5 

 96.7 



Grms. 

 95.1 

 83.4 

 96.8 

 92.8 

 98.1 

 99.3 



102.0 

 96.1 



114.5 

 89.6 

 97.1 

 99.2 

 93.9 

 88.1 

 94.0 

 83.3 

 95.3 

 88.5 

 94.7 

 97.0 

 92.6 

 99.7 

 85.7 



Grms. 

 69.5 

 70.3 

 77.9 

 81.8 

 83.8 

 86.8 

 85.7 

 79.7 

 84.5 

 74.3 

 86.6 

 83.6 

 79.6 

 75.8 

 80.0 

 75.5 

 78.7 

 77.0 

 84.9 

 82.1 

 76.0 

 83.9 

 76.9 



Grms. 



Grms. Grms. 



81.1 



2.... 



3-.-. 



7 .... 



9.... 

 11 .... 

 13.... 

 14 



61.1 

 75.5 

 71.9 

 76.9 

 74.3 

 73.7 

 74.5 



64.5 

 74.5 

 64.8 

 67.8 

 72.4 

 71.9 



57.8 

 62.0 

 57.8 

 63.2 



75.6 

 86.8 

 85.9 

 90.3 

 91.1 

 91.5 

 86.2 



15 







17.-.. 



18 



64.7 

 72.8 

 70.7 

 63.3 

 67.8 

 69.9 

 65.8 

 66.3 

 59.5 

 70.3 

 61.9 

 65.3 

 66.6 



65.5 



57.8 



"64*5" 



"68*8" 

 60.8 

 64.5 

 53.7 



'"58*5* 

 60.1 

 61.2 



65.9 

 74.0 

 74.7 

 69.8 

 66.1 

 65.7 

 66.2 

 68.9 

 67.1 

 78.4 

 72.2 

 66.9 

 75.3 

 66.2 



67.8 

 77.8 

 81.4 

 65.5 

 44.5 

 63.5 

 57.4 

 61.3 

 60.5 

 59.5 

 65.8 

 63.3 

 74.5 

 56.7 



61.2 



80.1 

 89.8 



19.... 

 20 ... . 

 21... 

 23.... 

 24 ... . 

 31.... 

 32.... 

 34 ... . 

 35 ... . 

 36.... 

 38 ... . 

 39 



66.2 



"58*0 



"61.' 8" 

 66.7 

 64.5 



90.2 

 84.5 

 79.8 

 84.3 

 78.5 

 84.9 

 81.4 

 87.6 

 87.1 

 82.4 

 91.0 

 79.4 











