ZAL R. KOTHAVALLA AND A. J. LAZARUS 53
and free from udder and other organic trouble. (ii) The animals in the experimental group were
taken to the calving shed about a month before they were due to calve and in addition to the daily
grooming and brushing, etc., the udders were massaged three to four times a day. (iii) When the
udders began to fill out with milk, which occurred usually about 10 to 15 days before calving, the
milk was drawn. The maximum quantity of milk thus obtained never exceeded 6.5 lb. the usual
average being 4.7 lb. per day. (iv) Four days after calving, the animals were removed to the
milking byre and milked twice a day during the whole lactation. (v) The control animals were
treated in a similar manner except that their udders were not worked up, nor was any attempt
made to draw off milk before calving. (vi) Particulars regarding milk yields of the lactations
before and during the experiment and the birth-weight of calves in respect of both the control and
experimental cows, etc. are given in Table I. One of the cows in the experimental group died after
completing one lactation before further observations could be made. A few animals had to be
disposed of during the third year of the experiment for various reasons. (vii) A record of the increase
in the monthly weight of some of the calves during the first period of experiment was kept and the
figures obtained are shown in Table III. The calves of the experimental animals were fed on the
milk drawn from the respective dams. No separate colostrum was fed to them as it was the inten-
tion to observe incidentally the effect of the preparturient treatment on the offspring.
TABLE I
Premilking of Sindhi cows
Serial No.
1 . . . .
2 . . . .
3 . . . .
4 . . . .
5 . . . .
6 . . . .
7 . . . .
8 . . . .
9 . . . .
10 . . . .
11 . . . .
12 . . . .
Average
1 . . . .
2 . . . .
3 . . . .
4 . . . .
5 . . . .
6 . . . .
7 . . . .
8 . . . .
9 . . . .
10 . . . .
11 . . . .
12 . . . .
Average
No. of
animals
236
248
249
251
253
256
258
259
263
270
277
279
—
233
238
247
252
255
257
265
269
271
275
278
282
—
No. of
lactations
the animal
was in at
the start
of the
experi-
ment.
3
3
3
3
3
2
2
2
2
2
2
2
—
4
3
3
3
2
2
2
2
2
2
2
2
—
Lactation
milk
yield
previous
to the start
of the
experiment
in lb.
2,089
2,602
3,700
2,776
6,443
5,519
1,117
2,340
5,695
4,704
2,784
2,872
3,554
3,394
3,769
3,443
4,100
3,847
4,466
3,848
4,639
2,027
759
4,052
4,301
3,554
Lactation milk yield duering
the experimental period in
lb.
1,277
Control
died after completing
one lactation)
5,862
6,589
3,777
5,119
4,235
3,664
2,524
2,436
6,441
4,896
3,090
—
6,379
6,167
4,127
5,857
4,426
4,294
2,489
4,231
5,092
1,688
3,142
—
6,127
4,676
4,402
6,493
5,061
—
2,056
3,222
4,740
—
3,542
—
Exeperimental
2,611
5,357
3,776
4,123
3,924
3,955
4,805
5,121
3,597
5,482
5,629
4,424
—
3,520
4,755
3,337
4,845
4,097
4,574
1,615
2,670
3,315
3,228
3,141
4,257
—
—
4,969
1,967
3,578
819
3,464
4,473
4,657
3,139
3,889
4,897
—
—
Average
milk
yield
during
the ex-
perimental
period
in lb.
1,277
6,961
5,811
4,102
5,823
4,574
3,979
2,356
3,298
5,424
3,292
3,260
4,105
3,066
5,027
3,027
4,139
2,947
3,998
3,631
4,119
3,350
4,150
4,556
4,340
3,862
Sex and birth weights of calves
born during the experimental
period in lb.
F. 38
F. 54
F. 42
M. 49
F. 55
M. 48
M. 45
M. 50
M. 49
M. 40
F. 50
M. 40
Male: 47.0
F. 43
M. 54
M. 47
F. 34
M. 46
M. 50
F. 45
M. 50
M. 65
F. 60
M. 50
M. 52
Male:52.1
—
M. 55
F. 50
F. 46
F. 55
F. 40
M. 37
F. 40
F. 40
M. 49
F. 45
M. 52
Female:
F. 50
F. 45
F. 45
F. 40
F. 42
F. 40
—
M. 48
M. 60
F. 50
M. 59
M. 55
Female:
—
M. 47
M. 45
F. 50
M. 52
F. 40
F. 40
F. 40
F. 38
M 45
M. 49
44.9
—
F. 54
F. 38
F. 37
F. 38
F. 46
—
M. 55
M. 47
M. 41
M. 55
—
44.2