122 HAKKIS ON THE PIG. 



that pigs No. 1, and No. 2 had no tendency to lay on fat, 

 and that they were increasing only in bone and muscle, 

 he thought it desirable to ascertain the amount of food 

 which each pig consumed; so, at the beginning of the 21st 

 week of the experiment, the pigs were put in separate 

 pens, and allowed, as before, all the food they would eat. 

 During the first week afterwards, 



Pig 1 ate 11 Ibs. meal. 

 " 2 " 12^ " " 

 " 3 " 25) " " 

 During the month the pigs ate and gained as follows : 



Pig 1 ate 48> Ibs. meal, and lost 1 Ib. 

 " 2 " 51K " " " gained 4 Ibs. 

 " 3" 100 " " " gained 19} Ibs. 



Pigs 1 and 2, together, ate precisely the same amount 

 of food as pig 3 alone. But in the one case, the 100 Ibs. 

 of corn gave 19'| 9 Ibs. of increase, and in the other only 

 3 Ibs. So much for a good appetite. 



CHAPTER 



LAWES AND GILBERT'S EXPERIMENTS IN PIG FEEDING. 



The most extensive experiments on fattening pigs are 

 those made by J. B. Lawes, Esq., and Dr. J. H. Gilbert, 

 at Rothamstead, near St. Albans, in England. These 

 gentlemen have, for many years, devoted themselves to 

 such investigations ; their experiments Avere conducted 

 with the greatest care, and in the most thorough manner, 

 and the results are worthy of entire confidence. Unfortu- 

 nately, as it seems to us, the experiments were confined 

 exclusively to pigs shut up to fatten ; and no particular 

 attention was given to the breed, or the previous history 

 of the pigs. The principal object of the experiments was 

 to ascertain the best kinds of food for fattening pigs, and 

 the best proportion of nitrogenous to non-nitrogenous food. 



