C. Crowthkr 



139 



was ensured that each animal consumed almost exactly the same 

 amount of food. The foodstuffs used were wheat-bran, wheat-" sharps," 

 pea-meal and barley-meal. The pigs were weighed weekly and gave 

 the increases shown in Table I. At the outset difficulties were experi- 

 enced in getting the pigs accustomed to the separate feeding stalls and 

 to the rations provided. For these reasons the records of the first 

 three weeks are regarded as abnormal and excluded from the table. 



Table I. 



Group A 



No. 1 



No. 2 



No. 3 



No. 4 



No. 5 



Group B 



No. (i 



No. 7 



No. 1 



No. 9 



No. 10 



Initial Live-weight (July 21) 



lb. I lb. I lb. 

 26-5 29-0 29-5 



lb. 

 30-5 



lb. II lb. I lb. j lb. 

 2S-0 || 30-0 I (40-2)* I 30-6 



Increase, in lb.s. 



Average 

 increase 

 for week 



lb. I lb. 1 lb. 

 32-5 I 2S'0 I 29-4i:-2J 



3-6±-2t 



2-8±-2t 



5-l±-3t 



5-4dr-2 



6-0±-4 



5-2±-,2 



6-4±'2 



8-0± 



8-4± 



5-7± 



7-l± 



5-l± 



8-0± 

 10-G± 



4-6± 

 10-0± 



8-3± 



8-l± 

 10-6 ± 

 110±-6 



8-9±-6 



Final Live-weight (December 15) 

 1174-5 |180-8 |169-3 |188-7 il73-0 |, 188-3 \ 181-5 |185-2 IIOOO |177-5 il78-5±l-7 



Total incre.n.se in 21 weeks 

 1148-0 1151-8 1139-8 1158-2 |145-0 |11.58-3 l(141-3)t|154-7 11.33-5 1149-5 |148-8±1-9| 



Prob. error 

 of one pig 

 expressed 

 as per cent, 

 of average 

 increase 



% 



m 



16t 



20t 



15t 



13 



20 



11 



9 



7 

 11 



6 

 18 

 18 

 21 

 15 

 31 

 12 

 19 

 13 

 12 

 18 

 20 



3-7J 



Weight at end of 6th week (August 11). f Increase for 18 weeks (from August 11) 



J Average of 9 pigs. 



