LAL CHAND DHARMANI AND JIWAN DAS CHOPRA
161
the mixture was extracted with peroxide-free ether three times. The combined ether extracts were
first washed twice with water, dried through anhydrous sodium sulphate and the ether evaporated
in an atmosphere of nitrogen. The residue was taken up in chloroform and made to a suitable volume
for colour comparison in Lovibond Tintometer.
Carotene. The carotene in green fodders was estimated by Ferguson and Bishop's method
[1936]. The finely chopped material was hydrolysed with 20 per cent aqueous potash and the caro-
tene and xanthophyll were extracted by means of ethyl ether. From this solution the pigments
were taken up with petroleum ether from which the xanthophyll was washed out with methyl alcohol.
The carotene was then determined tintometerically.
RESULTS
The vitamin-A value was determined once a week in a composite sample of the morning and
evening milk.
The data for Moore blue units per 100 c.c. of milk are shown in Table IV, while Table V gives
the percentage of fat in milk. The fat percentage varied between 6.1 and 10.5 and the Moore blue
units between 150 to 335. The average of the whole lactation is given in Table VI.
TABLE IV
Moore blue units per 100 c.c. of milk
Date
4th November . . .
12th November . . .
19th November . .
26th November . .
3rd December
....
10th December . . .
17th December . .
5th January
....
13th January
....
20th January
....
26th January
....
3rd February
....
10th February
17th February
25th February
3rd March
....
11th March
....
24th March
. . . .
1st April
....
8th April . . .
28th April . . .
5th
May
12th May . . .
19th May .
.
.
.
26th May . . .
9th June
. . . .
16th June
....
23rd June
. . .
1st July
l5th
July
....
22nd July
.
.
.
29th July
. . . .
Buffaloes
Group A
1
162
175
175
175
188
200
175
188
188
175
163
175
188
175
163
200
200
188
200
213
200
175
200
200
213
175
150
163
188
213
175
188
2
150
163
163
213
250
250
238
225
213
163
163
163
175
188
200
213
225
313
200
213
225
225
238
250
238
200
225
263
. .
325
300
336
3
150
175
163
183
175
250
213
213
250
188
188
163
163
163
175
200
200
213
213
200
150
188
200
213
225
213
200
225
238
238
250
260
4
175
168
175
203
175
188
188
225
175
200
175
190
188
188
213
213
200
200
213
213
. .
250
200
213
225
225
275
263
275
275
263
275
Group B
5
188
138
150
183
150
175
175
175
188
188
150
175
188
175
188
200
188
188
175
188
. .
175
188
200
213
233
215
275
238
288
288
288
6
188
166
155
175
175
163
188
175
175
175
200
163
175
175
188
175
188
188
175
175
175
188
188
213
200
238
163
200
250
263
275
225
7
183
138
163
150
163
163
200
183
188
150
138
150
175
175
188
163
175
162
188
188
175
. .
200
200
200
213
188
175
213
250
238
238
8
225
158
163
212
250
163
200
188
175
175
238
200
225
163
200
213
213
200
213
222
250
238
238
225
188
200
163
225
225
225
225
Group C
9
213
200
163
175
175
175
188
188
175
175
188
168
. .
. .
. .
. .
. .
. .
. .
. .
. .. .
. .
. .
. .
. .
. .
. .
. .
. .
. .
. .
. .
10
200
163
175
163
163
. .
. .
. .
. .
. .
. .
. .
. .
. .
. .
. .. .
. .
. .
. .
. .
. .
. .
. .
. .
. .
. .
. .
. .
. .
. .
. .
. .
11
275
188
175
188
175
175
175
188
163
188
175
175
168
175
175
175
188
175
188
188
188
188
200
188
200
200
188
213
250
. .
263
. .
12
163
175
175
200
188
238
225
225
175
225
188
200
213
188
163
175
188
175
188
200
225
250
188
200
263
225
213
300
. .
300
300
275