title: The effects of one-time hoof trimming on blood biochemical composition, milk yield, and milk composition in dairy cows.
abstract: Although not scientifically proven, hoof trimming has been empirically shown to increase milk yields in healthy dairy cows. In this study, we examined the effect of one-time hoof trimming on blood biochemical composition, milk yield, and milk composition in healthy dairy cows. Eleven cows in the mid to late lactation period that were clinically fit and without hoof disease were subjected to hoof trimming, and metabolic profile tests and dairy herd improving tests were performed before and three weeks after the hoof trimming. The metabolic profiles showed changes in albumin, blood urea nitrogen, ammonia, glucose, and beta-hydroxybutyric acid as a result of the hoof trimming. This was indicated by the fact that the cows began to intake more roughage after hoof trimming than prior to hoof trimming, and rumen fermentation became stable. There was no change in milk yield after trimming. However, the milk fat and milk protein compositions were significantly increased after trimming.
authors.affiliation: United Graduate School of Veterinary Sciences, Gifu University, Gifu 501-1193, Japan.
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Nishimori
authors.forename: Keiji
authors.initials: K
authors.lastname: Okada
authors.forename: Kentarou
authors.initials: K
authors.lastname: Ikuta
authors.forename: Osamu
authors.initials: O
authors.lastname: Aoki
authors.forename: Takeo
authors.initials: T
authors.lastname: Sakai
authors.forename: Jun
authors.initials: J
authors.lastname: Yasuda
mesh_terms: D000822:Animal Husbandry; D000818:Animals; D001774:Blood Chemical Analysis / Q000662:veterinary; D002417:Cattle / Q000097:blood / Q000378:metabolism* / Q000601:surgery*; D005260:Female; D006724:Hoof and Claw / Q000601:surgery*; D007774:Lactation; D008892:Milk / Q000737:chemistry / Q000378:metabolism*; D008894:Milk Proteins / Q000378:metabolism
chemical_list: D008894:Milk Proteins