title: Effects of biotin supplementation on serum biotin levels and physical properties of samples of solar horn of Holstein cows.
abstract: Effects of dietary biotin supplementation on serum biotin levels and physical properties of sole horn of 40 Holstein cows were evaluated. The mean serum biotin level in biotin-supplemented cows after 10 mo of biotin supplementation (1163.2 +/- 76.2 pg/mL) was significantly higher (P = 0.007) than that in control cows (382.0 +/- 76.2 pg/mL). The sole horn of biotin-supplemented cows was significantly harder (P = 0.026) and had a significantly lower moisture content (P = 0.021) than that of control cows. No morphologic differences in horn tubules or intertubular horn were found between the biotin-supplemented and control cows. The total lipid content of sole horn was significantly higher (P = 0.030) in the biotin-supplemented cows than in the control cows. These results suggest that dietary biotin supplementation causes increases in serum biotin levels and changes in physical properties and fat content of sole horn.
authors.affiliation: Department of Animal Health, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido 0698501, Japan. higuchi@rakuno.ac.jp
authors.forename: H
authors.initials: H
authors.lastname: Higuchi
authors.forename: T
authors.initials: T
authors.lastname: Maeda
authors.forename: M
authors.initials: M
authors.lastname: Nakamura
authors.forename: A
authors.initials: A
authors.lastname: Kuwano
authors.forename: K
authors.initials: K
authors.lastname: Kawai
authors.forename: M
authors.initials: M
authors.lastname: Kasamatsu
authors.forename: H
authors.initials: H
authors.lastname: Nagahata
mesh_terms: D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D001710:Biotin / Q000008:administration & dosage* / Q000097:blood*; D002417:Cattle; D002418:Cattle Diseases / Q000517:prevention & control*; D019587:Dietary Supplements; D005260:Female; D005534:Foot Diseases / Q000517:prevention & control / Q000662:veterinary*; D006724:Hoof and Claw / Q000187:drug effects* / Q000378:metabolism / Q000502:physiology; D008055:Lipids / Q000032:analysis; D011897:Random Allocation
chemical_list: D008055:Lipids; D001710:Biotin