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. 2021 Aug 18;8:707741. doi: 10.3389/fvets.2021.707741

Table 3.

Daily energy and vitamin D3 intake from kitten pet food, safe upper limit for vitamin D3, nutritional maximum for vitamin D, and the percentage difference for each cat.

Case 1 Case 2 Case 3 Case 4 Case 5 Mean ±SD*
Body weight (kg) 0.85 2.35 3.20 4.00 3.10 2.70 ± 1.06
Daily energy requirements (kcal ME/day)a 180 280 292 253 213 243 ± 41.3
Daily energy intake from KPF (% of daily energy requirements)b 38 49 47 109 97 68 ± 28.9
vitamin D3 intake (IU/cat) from KPFc 18,823 37,647 37,647 75,293 56,470 45,176 ± 19,196
SUL for vitamin D3 (IU/cat; NRC, 2006)d 1,218 3,719 4,781 1,924 1,622 2,653 ± 1,365
Δ% between vitamin D3 intake (KPF) and SUL 1,445 912 687 3,813 3,382
Nutritional maximum for vitamin D (IU/cat; FEDIAF, 2020)e 1,355 2,092 2,187 1,899 1,601 1,827 ± 310
Δ% between vitamin D3 intake (KPF) and the FEDIAF nutritional maximum for vitamin D 1,289 1,699 1,621 3,866 3,428
*

Data are expressed as the mean value ± SD; KPF, kitten pet food.

a

Daily metabolizable energy requirement calculated by the NRC equations proposed for growth kittens after weaning (cases 1, 2, and 3) and adult cats at maintenance (cases 4 and 5).

b

KPF energy density: 98 kcal/100 g as fed.

c

Based on measured KPF vitamin D3 content IU/100 g = 27,300.

d

SUL = safe upper limit (IU vitamin D3/cat).

e

Established on the nutritional maximum for vitamin D (D2 + D3) recommended by FEDIAF = 7,500 IU/1,000 kcal ME.