Agricultural Chemistry. — Pig Feeding. 491 

 Table XIII. 



(Experiments with Pigs. — Series III) 



Showing the Average weeklij Consumption of Food and Increase in Weight per Head, during 

 each Period, and during the total Period of the Experimer t. 



Pen, 

 Nos.j &c. 



Eescription and average quantities of Food consumed, 

 per Pig, per Week (lbs.)- 



Avera<,'e Weekly Increase in Live Wei;^ht 

 (lbs.) per Pi{^ during each Period, and 

 tlie total Period of the Experiment. 



Limited Foods. 



Ad Libitum Foods. 



1st 

 1 4 Days'. 



2nd 

 Period, 

 14 Days. 



3rd 

 14 Days. 



4th 

 Period, 

 14 Days. 



Average 

 of 



8 Weeks 



Pen 



i 

 2 



3 



Pi-s 

 4 



4 

 4 



5 



14 lbs. cod-fish. 

 14 lbs. cod-fish . 



None . . 



[47 lbs. of mixture of branl 

 ) and Indian meal (equal > 

 1 parts). J 

 4,5j lbs. Indian meal . 

 r 47 lbs. of mixture of bran \ 

 1 and Indian meal (equal ( 

 J parts), and 7 2 lbs. cod- / 

 [ fish. ) 



7-87 

 9*50 



1 



1 



10-25 



12- 00 



13- 00 



9-75 



10-62 

 13-25 



7'50 



9-87 

 12-87 



8-25 



10-09 

 12-15 



8-94 



4 

 5 



7 lbs. cod-fish . 

 7 lbs. cod-fish . 



r49 lbs. of mixture of 2 1 

 < parts barley meal and/ 

 [ 1 part bran. j 

 57^ lbs. barley meal . 



1 



|11*25 

 17-25 



9-62 

 12-25 



5-62 

 11-25 



11-12 

 6-25 



9-40 

 11-75 



From these Tables we learn the fact that the pigs consumed, 

 on an average, about 60 lbs. of corn per head per week — or nearly 

 9 lbs. per head per day ; and that where the quality of the food 

 was good, they yielded from 10 lbs. to 12 lbs. of increase in live 

 W' eight per head per week — or about 1^ lb. per head per day. 



The amounts of food consumed per week, as given in these 

 Tables (XI., XII., XIII.) are, it will be remembered, the 

 averages of the whole period calculated per head; and those of 

 the average weekly increase produced are also calculated per 

 head : but the latter is given for each separate period, as well as 

 for the total period. In the Tables which next follow, however 

 (XIV., XV., XVI.), we have the weekly consumption of food 

 per 100 lbs. live weight of animal, instead of per head ; and calcu- 

 lated for each period of the experiment separately, instead of only 

 for the total period. We have now, too, instead of the rate of 

 increase y^er head during each separate period, the amount of in- 

 crease obtained for each 100 lbs. of food consumed. In these 

 Tables, therefore, we have the rate of consumption and of in- 

 crease, during the successive periods of the experiment — each 

 calculated to a uniform standard. And, it will be seen, that the 

 results as thus arranged, clearly bring to view the influence of the 

 progress of the animal, both upon the rate of consumption of food, 

 and upon its productiveness — as already briefly alluded to, when 

 commenting upon the results of Pen 12 of the First Series of ex- 

 periments. We shall call attention to these Tables somewhat in 

 detail. 



