Lütke-Dörhoff Michael, Schulz Jochen, Westendarp Heiner, Visscher Christian, Wilkens Mirja R
Institute for Animal Hygiene, Animal Welfare and Farm Animal Behaviour, University of Veterinary Medicine Hannover, Foundation, 30173 Hannover, Germany.
Faculty of Agricultural Sciences and Landscape Architecture, University of Applied Sciences Osnabrück, 49090 Osnabrück, Germany.
Animals (Basel). 2022 Jun 29;12(13):1678. doi: 10.3390/ani12131678.
To investigate the influence of two dietary sources of vitamin D on the vitamin D status, bone metabolism, welfare and birth progress of gestating and lactating sows, forty-nine multiparous sows were randomly assigned to one of two diets: “CON” (n = 25; 50 μg vitamin D3/kg feed) and “HYD” (n = 24; 50 μg 25-hydroxycholecalciferol/kg feed). The basal diets were protein- and phosphorus-reduced. The trial started on day 3 ante insemination of the sows and ended with weaning of the piglets on day 28 postpartum. Dietary supplementation of 25-hydroxycholecalciferol resulted in improved maternal vitamin D status (p < 0.001), fewer gait changes (p < 0.01) and longer standing time after feeding (day 5 ante partum; p < 0.05) compared to vitamin D3. However, the bone markers CrossLaps and osteocalcin were not affected. Overall, the present results suggest that sows fed 25-hydroxycholecalciferol instead of vitamin D3 showed improved locomotion and stance strength. However, this outcome is probably not related to altered bone metabolism. The underlying mechanisms must be investigated in further studies.
为研究两种维生素D膳食来源对妊娠和哺乳母猪维生素D状态、骨代谢、健康状况及分娩进程的影响，将49头经产母猪随机分为两种日粮组：“CON”组（n = 25；每千克饲料含50μg维生素D3）和“HYD”组（n = 24；每千克饲料含50μg 25-羟基胆钙化醇）。基础日粮降低了蛋白质和磷含量。试验从母猪配种前3天开始，至产后28天仔猪断奶结束。与维生素D3相比，日粮添加25-羟基胆钙化醇可改善母体维生素D状态（p < 0.001），减少步态变化（p < 0.01），并延长采食后站立时间（产前第5天；p < 0.05）。然而，骨标志物I型胶原交联C末端肽和骨钙素未受影响。总体而言，目前的结果表明，饲喂25-羟基胆钙化醇而非维生素D3的母猪运动能力和站立强度有所改善。然而，这一结果可能与骨代谢改变无关。其潜在机制必须在进一步研究中进行探究。
