22 
The Bulletin 
The mineral intake will fluctuate with the kinds of minerals given 
in addition to the dry mash and the grain mixtures. By a study of the 
table of average analyses we note that milk contains quite a quantity of 
phosphorus, calcium, sodium, and potassium. The intake of sour skim 
milk, if given what they will consume, amounts to much in the way 
of mineral elements. Thus in the first period 58 per cent of the potas¬ 
sium, 63 per cent sodium, 6 per cent calcium, .0045 per cent magne¬ 
sium*, 42 per cent sulphur, 68 per cent chlorine, 26 per cent phosphorus, 
and 2 per cent iron* was furnished by the sour skim milk. 
In the second period 52 per cent of the potassium, 67 per cent sodium, 
27 per cent calcium, 3 per cent magnesium, 39 per cent sulphur, 64 per 
cent chlorine, 28 per cent phosphorus, and 64 per cent iron was furnished 
by the sour skim milk. 
In the third period 42 per cent of the potassium, 60 per cent sodium, 
13 per cent calcium, 1 per cent magnesium, 31 per cent sulphur, 53 per 
cent chlorine, 22 per cent phosphorus, and 9 per cent iron was fur¬ 
nished by the milk. 
In the fourth period 41 per cent of the potassium, 57 per cent sodium, 
10 per cent calcium, 1 per cent magnesium, 30 per cent sulphur, 45 per 
cent chlorine, 16 per cent phosphorus, and 17 per cent of the iron was 
furnished by the skim milk. 
In the fifth period 40 per cent of the potassium, 68 per cent sodium, 
18 per cent calcium, 1 per cent magnesium, 28 per cent sulphur, 52 per 
cent chlorine, 22 per cent phosphorus, and 14 per cent iron was fur¬ 
nished by the skim milk. 
In the sixth period 35 per cent of the potassium, 66 per cent sodium, 
15 per cent calcium, 1 per cent magnesium, 26 per cent sulphur, 45 per 
cent chlorine, 20 per cent phosphorus, and 9 per cent iron was furnished 
by the sour skim milk. 
In the seventh period 41 per cent of the potassium, 73 per cent sodium, 
17 per cent calcium, 1 per cent magnesium, 32 per cent sulphur, 52 per 
cent chlorine, 26 per cent phosphorus, and 9 per cent iron was supplied 
by the sour skim milk. 
In the eighth period 40 per cent of the potassium, 70 per cent sodium, 
25 p'er cent calcium, 2 per cent magnesium, 32 per cent sulphur, 51 per 
cent chlorine, 24 per cent phosphorus, and 63 per cent iron was sup¬ 
plied by the sour skim milk. 
Considering the total mineral nutrients that would have been sup¬ 
plied by the feed ingested, leaving out the milk, there would have been 
ample furnished in the first, second, third, fourth, fifth, sixth, seventh, 
and eighth periods. 
*It must be remembered that all the mineral elements in the grit are not liberated for use in the same 
penod in which it is consumed, since the grit will not all be ground for several weeks. 
