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2,000 IU of Vitamin D per kg of food – best growth, bone strength, etc. (pig trial) – Dec 2022


Effects of 25(OH)VD3 on Growth Performance, Pork Quality and Calcium Deposit in Growing-Finishing Pigs

Animals (Basel) . 2022 Dec 26;13(1):86. doi: 10.3390/ani13010086.
Zeyu Zhang 1, Gang Zhang 1, Jindang Cao 2, Baoqin Qiu 2, Xiaoyu Qin 2, Jinbiao Zhao 1

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The study was conducted to evaluate the effects of 25(OH)VD3 with different inclusion levels of 0, 25, 50 and 75 µg/kg in the diet on growth performance, nutrient digestibility, bone properties and pork quality in growing-finishing pigs. The results showed that the average daily gain (p < 0.05) and body weight (p < 0.10) of pigs showed a trend of increasing quadratically as inclusion levels of 25(OH)VD3 increased.
Dietary supplementation of 50 µg/kg 25(OH)VD3 increased calcium digestibility compared with the 0 µg/kg group (p <; 0.05), and calcium and phosphorus digestibility increased quadratically as inclusion levels of 25(OH)VD3 increased (p < 0.05). Dietary supplementation of 50 µg/kg 25(OH)VD3 increased concentrations of polyunsaturated fatty acids, and decreased contents of saturated and monounsaturated fatty acids in the longissimus dorsi of pigs (p < 0.05).
The addition of 25, 50 and 75 µg/kg 25(OH)VD3 to the diet increased breaking strength and bone stiffness in the tibia compared with the 0 µg/kg group (p < 0.05). Dietary supplementation of 50 µg/kg 25(OH)VD3 improved the activities of superoxide dismutase (SOD) and catalase (CAT), and increased the messenger RNA (mRNA) expression of Cu/Zn SOD in the longissimus dorsi compared with the 0 µg/kg group (p < 0.05). Supplementing 50 µg/kg 25(OH)VD3 improved the mRNA expression of calcium-binding protein D9k (CaBP-D9k) and D28k (CaBP-D28K) in the liver compared with the 0 µg/kg 25(OH)D3 group (p < 0.05). In conclusion, a diet with an added dose of 50 µg/kg 25(OH)VD3 showed a greatest growth performance of growing-finishing pigs, and 25(OH)VD3 enhanced calcium deposition and antioxidant capacity in the longissimus dorsi, which may be associated with improved expression of calcium ion channel proteins.
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VitaminDWiki - Overview Veterinary and vitamin D contains

Veterinary category has 147 items

Animals need Vitamin D too

Pets as well

Farm Vets are paid when their "patients" are healthy,
   vs doctors who are paid only when "patients" become sick

_Cows are routinely given 30 IU per kilogram (which would be 10,000 IU for a 150 lb person)
Same information is available on Cattle need 66 IU of vitamin D per pound
The US RDA of vitamin D for cows is 13 IU per kilogram (which would be 4,300 IU for a 150 lb 'cow')
Virtually all US farmers who raise livestock use feed which is supplemented with vitamin D
Merick Vet Manual supplement if not have UV or sunlight


VitaminDWiki - Fatty acid chart

Fatty acids and Omega-3


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Attached files

ID Name Comment Uploaded Size Downloads
19082 Pig Tibia.jpg admin 09 Jan, 2023 18.06 Kb 136
19081 Pigs 2,000 IU per kg_CompressPdf.pdf admin 09 Jan, 2023 266.08 Kb 79