Acknowledgement
The authors thank Sharma Suchitra, Arife Sener-Aydemir, Annegret Lucke, Melanie Wild, Manfred Hollmann and Thomas Enzinger (Institute of Animal Nutrition and Functional Plant Compounds), Lukas Schwarz (University Clinic of Swine) as well as Sylvia Posseth and Tamara Strini (VetFarm) from the University of Veterinary Medicine Vienna for excellent assistance with the animals, sampling and laboratory analysis.
References
- Skiba G, Sobol M, Raj S. Femur morphometry, densitometry, geometry and mechanical properties in young pigs fed a diet free of inorganic phosphorus and supplemented with phytase. Arch Anim Nutr 2017;71:81-92. https://doi.org/10.1080/1745039X.2016.1250542
- Dersjant-Li Y, Awati A, Schulze H, Partridge G. Phytase in non-ruminant animal nutrition: a critical review on phytase activities in the gastrointestinal tract and influencing factors. J Sci Food Agric 2015;95:878-96. https://doi.org/10.1002/jsfa.6998
- Miller HM, Slade RD, Taylor AE. High dietary inclusion levels of phytase in grower-finisher pigs. J Anim Sci 2016; 94:121-4. https://doi.org/10.2527/jas.2015-9784
- Gonzalez-Vega JC, Stein HH. Calcium digestibility and metabolism in pigs. Asian-Australas J Anim Sci 2014;27:1-9. https://doi.org/10.5713/ajas.2014.r.01
- Votterl JC, Klinsoda J, Hennig-Pauka I, Verhovsek D, MetzlerZebeli BU. Evaluation of serum parameters to predict the dietary intake of calcium and available phosphorus in growing pigs. Transl Anim Sci 2021;5:txab095. https://doi.org/10.1093/tas/txab059
- Gerlinger C, Oster M, Borgelt L, et al. Physiological and transcriptional responses in weaned piglets fed diets with varying phosphorus and calcium levels. Nutrients 2019;11:436. https://doi.org/10.3390/nu11020436
- Breves G, Kock J, Schroder B. Transport of nutrients and electrolytes across the intestinal wall in pigs. Livest Sci 2007; 109:4-13. https://doi.org/10.1016/j.livsci.2007.01.021
- Kiela PR, Hishan FK. Physiology of intestinal absorption and secretion. Best Pract Res Clin Gastroenterol 2016;30:145-59. https://doi.org/10.1016/j.bpg.2016.02.007
- Taylor JG, Bushinsky DA. Calcium and phosphorus homeostasis. Blood Purif 2009;27:387-94. https://doi.org/10.1159/000209740
- Klinsoda J, Votterl J, Zebeli Q, Metzler-Zebeli BU. Alterations of the viable ileal microbiota of the gut mucosa-lymph node axis in pigs fed phytase and lactic acid-treated cereals. Appl Environ Microbiol 2020;86:e02128-19. https://doi.org/10.1128/AEM.02128-19
- Metzler-Zebeli BU, Klinsoda J, Votterl JC, Verhovsek D. Maturational changes alter effects of dietary phytase supplementation on the fecal microbiome in fattening pigs. Microorganisms 2020;8:1073. https://doi.org/10.3390/microorganisms8071073
- Schneider S, Brunlehner EM, Schaffler M, et al. Feed calculation for pigs, 22. Auflag. Bayerische Landesanstalt fur Landwirtschaft(LfL); 2019.
- Committee on Nutrient Requirements of Swine, National Research Council. Nutrient requirements of swine. 11th ed. Washington, DC, USA: National Academy Press; 2012
- Votterl JC, Klinsoda J, Zebeli Q, Hennig-Pauka I, Kandler W, Metzler-Zebeli BU. Dietary phytase and lactic acid-treated cereal grains differently affected calcium and phosphorus homeostasis from intestinal uptake to systemic metabolism in a pig model. Nutrients 2020;12:1542. https://doi.org/10.3390/nu12051542
- Hegde S, Lin YM, Golovko G, et al. Microbiota dysbiosis and its pathophysiological significance in bowel obstruction. Sci Rep 2018;8:13044. https://doi.org/10.1038/s41598-018-31033-0
- Olsen KM, Gould SA, Walk CL, Serao NVL, Hansen SL, Patience JF. Evaluating phosphorus release by phytase in diets fed to growing pigs that are not deficient in phosphorus. J Anim Sci 2019;97:327-37. https://doi.org/10.1093/jas/sky402
- Sulabo RC, Jones CK, Tokach MD, et al. Factors affecting storage stability of various commercial phytase sources. J Anim Sci 2011;89:4262-71. https://doi.org/10.2527/jas.2011-3948
- Carbonare LD, Giannini S. Bone microarchitecture as an important determinant of bone strength. J Endocrinol Invest 2004;27:99-105. https://doi.org/10.1007/bf03350919
- Rupp T, Butscheidt S, Vettorazzi E, et al. High FGF23 levels are associated with impaired trabecular bone microarchitecture in patients with osteoporosis. Osteoporos Int 2019;30:1655-62. https://doi.org/10.1007/s00198-019-04996-7
- Metzler-Zebeli BU, Ertl R, Klein D, Zebeli Q. Explorative study of metabolic adaptations to various dietary calcium intakes and cereal sources on serum metabolome and hepatic gene expression in juvenile pigs. Metabolomics 2015;11:545-58. https://doi.org/10.1007/s11306-014-0714-2
- Zemel MB. Role of calcium and dairy products in energy partitioning and weight management. Am J Clin Nutr 2004; 79:907S-12S. https://doi.org/10.1093/ajcn/79.5.907s
- Malagutti L, Colombini S, Pirondini M, Crovetto GM, Rapetti L, Galassi G. Effects of phytase on growth and slaughter performance, digestibility and nitrogen and mineral balance in heavy pigs. Ital J Anim Sci 2012;11:e70. https://doi.org/10.4081/ijas.2012.e70
- Van den Broeke A, Aluwe M, Kress K, et al. Effect of dietary energy level in finishing phase on performance, carcass and meat quality in immunocastrates and barrows in comparison with gilts and entire male pigs. Animal 2022;16:100437. https://doi.org/10.1016/j.animal.2021.100437
- Erben RG. Update on FGF23 and Klotho signaling. Mol Cell Endocrinol 2016;432:56-65. https://doi.org/10.1016/j.mce.2016.05.008
- Slifer ZM, Blikslager AT. The integral role of tight junction proteins in the repair of injured intestinal epithelium. Int J Mol Sci 2020;21:972. https://doi.org/10.3390/ijms21030972
- Wongdee K, Rodrat M, Teerapornpuntakit J, Krishnamra N, Charoenphandhu N. Factors inhibiting intestinal calcium absorption: hormones and luminal factors that prevent excessive calcium uptake. J Physiol Sci 2019;69:683-96. https://doi.org/10.1007/s12576-019-00688-3
- Fujita H, Sugimoto K, Inatomi S, et al. Tight junction proteins Claudin-2 and -12 are critical for Vitamin D-dependent Ca2+ absorption between enterocytes. Mol Biol Cell 2008;19:1912-21. https://doi.org/10.1091/mbc.e07-09-0973
- Lee B, Moon KM, Kim CY. Tight junction in the intestinal epithelium: Its association with diseases and regulation by phytochemicals. J Immunol Res 2018;2018:2645465. https://doi.org/10.1155/2018/2645465