Nutirents requirement for growth

NUTIRENTS REQUIREMENT FOR GROWTH

  • Nutrient requirements for growing calves may be divided into 2 phases.

a. Pre-ruminant growth period

  • The nutrients required for pre-ruminant growth have been reported by Ranjhan (1972) and were adopted by ICAR (1998).
  • i.e. before the rumen is anatomically and physiologically developed.

b. Post-ruminant growth period

  • Vast data was available on growing zebu cattle, buffaloes and crossbred animals on different planes of nutrition from which nutrient requirements pertaining to protein and energy have been calculated. For minerals and vitamins, the requirements have been derived from NRC (1988) for a specific growth rate. The requirements have been given for growth rates of 550 and 600 g per day.

Calves

Nutrient requirements of preruminant cattle and buffalo calves (ICAR, 1998)

Age
(days)
B.wt
(kg)
Daily
Gain (g)
DCP
(g)
TDN
(kg)
ME
(Mcal)
Ca
(g)
P
(g)
Vit. A
100IU
Vit. D
IU
0-15
25
200
80
0.40
1.5
2.5
1.5
1.5
200
16-30
30
300
90
0.50
1.7
3.0
2.0
1.5
250
31-60
40
300
125
0.80
2.4
3.5
2.5
1.7
250
61-90
50
350
150
1.00
3.6
4.0
3.8
2.0
300

Nutrient requirements for growing calves (cattle) (ICAR, 1998)
ie. after the rumen has been developed.
(kg)
B.wt
Growth
rate (g)
DM
(kg)
DCP
(g)
TDN
(kg)
ME
(Mcal)
Ca
(g)
P
(g)
Carotene
(mg)
Vit.A
100IU
70
550
600
2.1
2.3
255
260
1.4
1.5
5.0
5.4
8
8
6
6
7
7
3
3
80
550
600
2.4
2.5
260
270
1.5
1.6
5.4
5.8
9
9
7
7
7
8
3
3
100
550
600
2.8
3.0
270
280
2.1
2.2
7.6
7.9
10
10
8
8
10
10
3
3
120
550
600
3.2
3.7
280
290
2.3
2.4
8.3
8.6
14
14
11
11
11
11
4
4
140
550
600
3.7
4.2
290
300
2.5
2.6
9.0
9.4
14
14
11
11
16
16
6
6
160
550
600
4.2
4.7
300
320
2.7
2.8
9.7
10.1
15
15
12
12
16
16
6
6
180
550
600
4.7
5.2
310
320
2.9
3.0
10.4
10.8
15
15
12
12
18
18
8
8
200
550
600
5.2
5.7
320
330
3.1
3.2
11.2
11.5
16
16
13
13
22
22
9
9
220
550
600
5.7
6.2
330
340
3.3
3.4
11.9
12.2
18
18
14
14
24
24
10
10
240
550
600
6.2
6.7
340
350
3.5
3.6
12.6
13.0
20
20
16
16
28
28
12
12
260
550
600
6.7
7.2
350
360
3.7
3.8
13.3
13.7
20
20
16
16
30
30
13
13
Last modified: Wednesday, 4 April 2012, 5:27 AM