MAl^lTAL OF CATTLE-FEEDIlSrG. 



459 



relatively large amount of fodder consumed hj the pig, it 

 becomes plain that both the nntritive effect and tlie cost of 

 the feeding may vary greatly, and that consequently the 

 feeding standards for pigs mnst be still more general in 

 their nature than those for other animals. 



Nutritive Ratio. — All experiments on pigs agree in 

 showing that with young animals a narrow nutritive ratio 

 produces the most rapid gain with the least expenditure of 

 fodder, while as the animals grow older the bobt results, 

 both as to rapidity of gain and quality of product, are 

 generally obtained by using a somewhat wider ratio. 



Of the numerous experiments illustrating this, the fol- 

 lowing by Lehmann^' may servo as an example. The 

 feeding-stuffs used were skimmed milk, peas, oats, barley, 

 rye bran, and potatoes. Six animals were divided into 

 three lots of two each : Lot I. received in each period a 

 fodder having a nutritive ratio of about 1:4; Lot IL one 

 having a nutritive ratio of about 1:6; and Lot IlL one 

 having a ratio of 1 : 8. The following table contains the 

 principal results of the experiments : 



Period I. — 13 Days (Age : 08-81 Days). 





Pek Bay and Head. 



Nutr, 



ratio 



1. 



To Produce a Gain of 100 Poxjkds. 



Lot. 



Average 



live 

 weight. 



Lbs 



Gain. 

 Lb. 



Dry 

 matter 



of 

 fodder. 



Lbs 



j Dry 

 matter. 

 Lbb. 



1 



Protein. 



Lbs. 



Carbby- 



drates. 



Lbs. 



Fat. 

 Lbs. 



I... 



11.. 

 III.. 



46.8 

 44 6 

 44 6 



85 

 76 

 0.59 



3 33 

 3 31 

 3.35 



3 93 

 13 



8 37 



301.95 

 333 8") 

 436 59 



59.10 



44 95 



45 10 



310 13 

 2m 73 

 356.40 



9.01 

 6.81 

 6.71 



* Wolff **Ernahruiig der Landw. Nutzfchiere," p. 466. 



