228 



Journal of Agricultural Research 



Vol. XIX, No. s 



Table VI. — Grain required to prodiice 100 pounds gain in dry-lot pigs of test C, group 2, 



Jed Ii8 days 



[Average initial weight, 43.62 pounds; average final weight, 185.46 pounds] 



Litter. 



Pig No. 



Daily gain. 



Grain for 100 

 pounds gain. 



Variations from mean grain for 

 100 pounds gain. 



PB 



PB 



PB 



PB 



DJ 



DJ 



PY 



PY 



Mean grain for 100 

 pounds gain 



Pounds. 



Pounds. 

 420 



473 

 363 

 343 

 370 

 419 

 . 340 

 342 



Pounds. 

 +36. 82 

 + 89. 48 

 — 20. 66 

 -40. 24 

 -13-24 

 +35- 03 

 -43-96 

 -41. 78 



384. 09 



Per cent. 

 9- 586 

 23. 296 

 5-378 



10. 476 



3-447 

 9. 120 



11. 445 

 10. 877 



The degrees of variation from the group means classify thus : 



6 pigs show a variation from the mean of more than 10 per cent. 



3 pigs show a variation from the mean of between 5 and 10 per cent. 



4 pigs show a variation from the mean of less than 5 per cent. 



Table VII. — Grain required to produce lOO pounds gain in pasture-fed pigs of test C, 



group 3, fed yg days 



lAverage initial weight, 63. 6 pounds; average final weight, 147.3 pounds] 



Litter. 



PC 



PC 



PC 



PC 



DJ 



DJ 



DJ 



DJ 



DJ 



DJ 



DJ 



DJ 



PC 



PC 



PC 



PC 



Mean grain for 100 

 pounds gain 



Pig No. 



Daily gain. 



0.94 



I. 06 



1-15 

 I. 18 

 I. 06 



I. 09 



Grain for 100 

 potmds gain. 



Pounds. 

 309.78 



394- 50 

 321.42 



315-89 

 332.96 



396- 15 

 394- 40 

 327.81 



367- 91 

 335- 39 

 461.57 

 308.81 

 442.83 

 451- 73 

 309-93 

 362.25 



364. 96 



Variations from mean grain for 

 100 poiuids gain. 



Pounds. 



-55 

 + 29 



-43 

 -49 



-32 



+31 

 +29 



-37 

 + 2 

 -29 

 +96 

 -56 



+ 77 

 +86 



-55 



Per cent. 



15. 119 



8.093 



II. 931 



13-445 



8.768 



8.546 



8.066 



10. 170 



.808 



8. 102 



26. 471 



15-385 



21.336 



23-775 



15-079 



.742 



Note that both extremes are found in the same litter, DJ 10 and DJ 11. 

 Wide variations appear here, but because of the comparatively short 

 feeding period of 79 days and the low final average weight these results 

 can not be accepted on a par with those from the preceding groups. 

 Tabulating the results for group 3 on the basis of extent of variation 

 from the mean, we have: 



