376 



NUTRITION OF FARM ANIMALS 



and of Just l on lambs have been included in the table which 

 follows. 



In those cases in which the experiments were made by the method 

 of comparative slaughter tests, the composition of the control animals 

 gives an approximate measure of the initial protein content of the 

 body. When no control animal was analyzed the initial protein con- 

 tent has been estimated as well as possible from the live weight. 

 Since this was the case in the majority of the experiments it seems 

 desirable also to compute the gain of protein per 1000 live weight. 

 Except in the case of very young or very fat animals, the results are 

 likely to correspond substantially with those computed in the other 

 way, while they have the advantage of being expressed in the manner 

 usually adopted for formulating feeding requirements. 



TABLE 80. RATE OF GAIN OF PROTEIN 



AVERAGE AGE 

 Days 



DAILY GAIN OF PROTEIN 



Per 100 Body 

 Protein 



Per looo Live 

 Weight 



Cattle 



Soxhlet 8 



Soxhlet 15 



Soxhlet 18 



Soxhlet 21 



Fingerling 21 



Soxhlet 32 



De Vries Jzn 37 



De Vries Jzn 38 



Neumann 40 



Neumann 45 



De Vries Jzn 45 



Fingerling 47 



De Vries Jzn 50 



Neumann 50 



Neumann ..." 54 



Neumann 57 



Neumann 62 



De Vries Jzn 63 



De Vries Jzn 64 



De Vries Jzn 65 



Fingerling 68 



Neumann 69 



De Vries Jzn 74 



2-347 

 2.076 

 1.644 

 1.722 

 1.974 

 1.693 



'1-335 

 1.246 



1-795 

 1.449 

 1.272 

 1.248 

 0.880 

 1.082 

 1.026 

 1.320 



0-939 

 0.678 



0.655 



1.020 



0.948 



1.062 



0.713 



3-994 

 3-552 

 2.803 

 3.024 

 3-085 

 2-755 

 2.276 

 2.124 



2-945 

 2.419 

 2.169 

 2.161 

 1.500 

 1.844 



2.284 

 1.611 

 1.209 

 1.209 

 1.723 

 1.719 

 1.823 

 1.271 



1 Landw. Vers. Stat., 69 (1908), 393, results of periods 3, 5, 7 and 9. 



