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Southern Wisconsin Cheesemakers' and Dairymen's Association / Proceedings of the tenth annual meeting of the Southern Wisconsin Cheesemakers' and Dairymen's Association held at Monroe, Wisconsin, Thurs. and Fri., January 27 and 28, 1910
(1910)

Hart, T. B.
Variations in the amount of casein in cows' milk and the operation of the casein test,   pp. 44-53 PDF (1.9 MB)


Page 46


TENTH ANNUAL CONVENTION
know whether or not animals producing a definitely related
percentage of casein, and with animals producing three to
five per cent of fat, whether that same relation holds
true. If it does not, then it would appear that here is
important work for breeders of dairy cows in the selection
and production of animals producing milk more fitted for
the butter or the cheese industry, as the case may be.
STUDIES OF THE UNIVERSITY HERD.
No attempt wvas made to follow the animal through
long periods of lactation. The only attempt made here was
to learn whether the variations of fat to casein in different
animals were of any significance and what might be ex-
pected any time an analysis was made.
Casein determinations were made by the Official Agri-
TABLE I.-Analvsis of milk of Universitv herd.
Breed   I  Name of Cow
_~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Percent   Per cent
of casein  calcu-
found      R 'ated
I         I Relation   _
Per cent   of lat  Relation
of fat    and    of casein
I  ~ ~    casein  and  far
Jersey ....... I Laura   .     I
I Double Time... i
Guernsey....
I Macella.
I Just in Time...
Sadie.
Jeweletta.....I
2.45
3.11
3.31
3.65
3.00
2.92
2.60
2.83
3.28
3.24
2.81
3.30
Cozie...........  3.5() 2  3.38
Floradora ...... |  2.77  3.30
Queen ...       | 3.09    3.02
Mollie .......,.| 3.12 1 3.08 I
Hannah .......    2.91  1 2.85
Conntess ...... l 2.60 1 2.94 l
Dorine ...      1 2.47 l 3.05 1
Muriel ...._..    2.98 1 3.31
Holstein.i.... J Alma ....      , 2.10  1 2.17,
I Joe .......     2.13 1 2.17
! Maggie....... L 2.50 1 2.27
Johanna ......   2.16   2.32 1
Maxie ......      1.83:  2.17
Marie.......-.. | 2.15  2.11 I
4.27 1 1.74:1 1 .57:1
4.83   1.55:1 1 .04:1
5.95   1.79:1  1 .55:1
5.85 1 1.60:1  1 .62:1
4.79 1 1.59:1 1 .62:1
6.02 l 2.06:1 1 .48:1
6.21   1.77:1  .56:1
6.01   2.16:1  .46:1
5.31 I 1.,1:1 I .58:1
5.46 I 1.75:1   .57:1
4.89 I 1.67:1 I .59:1
5.11 I 1.96:1 l .50:1
5.37   2.17:1 I .46:1
6.04   2.03:1 l .49:1
2.90   1.41:1  .70:1
3.19   1.49:1 1.66:1
3.44   1.37:1  .72:1
3.56   1.55:1 I .60:1
3.18   1.52:1 I .65:1
3.08 I 1.40:1 1 .70:1
Brown Swiss    Irma...........     66    2.61    4.29 i 1.61:1 1 .61:1
Merney ....... . 2.70     2.49    3.90    1.51:1   .70:1
Ayrshire. .. . Pricilla.....    2.56     2.34   3.61     1.41:1   70:1
Christina .       2.14    2.87   4.93     1.57:1    63:1
Adelaide   .      2.47    2.28    3.47    1.40:1   .71:1
Jeanette .        2.61    2.32    3.57    1.36:1  .73:1
, , * . , . . . .
46,
,                          ,     ,  . _  .


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