Calculated Energy Requirements

Puppy Energy Requirements

The equation used for puppy energy requirements in table 1 is based on current body weight and expected adult weight.

130 x W^0.75 x 3.2 x [e^(-0.87p) - 0.1]

Where:

p = W/Wm

W = actual body weight in kg

Wm = predicted mature adult weight in kg

e = base of natural log ~2.718

N.B. The table displays the columns in age in months, not current weight of the puppy. This is because the energy requirement data at a given age are calculated from the expected weight at that age – and this varies depending on the anticipated adult weight of the dog.

Table 1: Puppy Energy Requirements (kcal/day)
	Age in months
Expected adult weight in kg	1	2	3	4	5	6	9	12	15	18	21
1	56	97	123	137	140	141	adult	adult	adult	adult	adult
2	95	163	207	230	236	238	adult	adult	adult	adult	adult
3	129	221	281	311	320	322	adult	adult	adult	adult	adult
4	159	274	349	386	397	400	adult	adult	adult	adult	adult
5	188	324	412	457	469	473	adult	adult	adult	adult	adult
6	216	372	473	524	537	542	535	adult	adult	adult	adult
7	243	417	531	588	603	608	601	adult	adult	adult	adult
8	268	461	587	650	667	672	664	adult	adult	adult	adult
9	293	504	641	710	728	728	734	adult	adult	adult	adult
10	317	545	693	768	788	795	785	adult	adult	adult	adult
15	430	739	940	1040	1069	1077	1065	adult	adult	adult	adult
20	533	917	1166	1292	1326	1337	1321	adult	adult	adult	adult
25	532	1030	1349	1498	1551	1576	1575	1543	1516	adult	adult
30	610	1181	1547	1718	1778	1807	1806	1769	1738	adult	adult
35	685	1325	1737	1928	1996	2029	2027	1986	1951	adult	adult
40	757	1465	1919	2132	2206	2242	2241	2195	2157	adult	adult
45	744	1299	1836	2164	2341	2431	2455	2437	2385	2306	adult
50	805	1406	1987	2342	2533	2631	2657	2637	2581	2495	adult
55	865	1510	2134	2515	2721	2826	2854	2833	2772	2680	adult
60	923	1612	2278	2685	2904	3016	3047	3024	2959	2861	adult
65	980	1712	2419	2851	3084	3203	3236	3211	3142	3038	adult
70	1036	1810	2557	3014	3260	3386	3420	3395	3322	3211	adult

Adult Dog Energy Requirements

The calculations are based on

95 x W ^0.75

Where:

W = body weight in kg

Table 2: Adult Dog Energy Requirements (kcal/day)
Adult weight in kg	Energy Requirement in kcal/d
1	95
2	160
3	217
4	269
5	318
6	364
7	409
8	452
9	494
10	534
15	724
20	898
25	1062
30	1218
35	1367
40	1511
45	1651
50	1786
55	1919
60	2048
65	2175
70	2299

Kitten Energy Requirements

N.B. The energy requirements in table 3 are per kg body weight.

Table 3: Kitten Energy Requirements (kcal/kg BW/day)
Age in weeks	Energy Requirement in kcal/d
up to 8	218
8 to 12	178
12 to 16	143
16 to 24	108
24 to 32	92
32 to 40	83

Adult Cat Energy Requirements

The calculations are based on

77.6 W ^0.711

Where:

W = body weight in kg

Table 4: Adult Cat Energy Requirements (kcal/day)
Adult weight in kg	Energy Requirement in kcal/d
1	78
2	127
3	169
4	208
5	244
6	277
7	310
8	340
9	370
10	399

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