title: Effect of hoof trimming before the dry period on productive performance in perinatal dairy cows.
abstract: To investigate the effect of hoof trimming before the dry period, the hooves of 10 cows (trimmed group) were trimmed at 79.6 +/- 8.6 days before parturition and the hooves of 52 cows were left untrimmed (control group). Blood biochemistry and hormone concentrations were investigated for 6 cows from each group. The daily milk yield after parturition in the trimmed group tended to be higher than that of the control group. Between 0 and 30 days after parturition, the levels of non-esterified fatty acids were significantly lower stet, and the plasma glucose and glucose disposal rates were significantly higher in the trimmed group. The plasma cortisol concentration was stable before and after parturition in the trimmed group. Hoof trimming before the dry period appears to reduce stress and maintain the nutritional conditions of perinatal dairy cows.
authors.affiliation: School of Veterinary Medicine, Kitasato University, Aomori, Japan. ando@vmas.kitasato-u.ac.jp
authors.forename: Takaaki
authors.initials: T
authors.lastname: Ando
authors.forename: Atsushi
authors.initials: A
authors.lastname: Annaka
authors.forename: Hiromichi
authors.initials: H
authors.lastname: Ohtsuka
authors.forename: Masayuki
authors.initials: M
authors.lastname: Kohiruimaki
authors.forename: Tomohito
authors.initials: T
authors.lastname: Hayashi
authors.forename: Yoshihisa
authors.initials: Y
authors.lastname: Hasegawa
authors.forename: Daisaku
authors.initials: D
authors.lastname: Watanabe
mesh_terms: D000822:Animal Husbandry; D000818:Animals; D001786:Blood Glucose / Q000502:physiology; D001823:Body Composition / Q000502:physiology; D001835:Body Weight / Q000502:physiology; D002417:Cattle; D005230:Fatty Acids, Nonesterified / Q000097:blood; D005260:Female; D006724:Hoof and Claw / Q000502:physiology*; D006854:Hydrocortisone / Q000097:blood; D007774:Lactation / Q000502:physiology*; D011247:Pregnancy; D013997:Time Factors
chemical_list: D001786:Blood Glucose; D005230:Fatty Acids, Nonesterified; D006854:Hydrocortisone