TAILIEUCHUNG - Báo cáo khoa học: "Lameness and Claw Lesions of the Norwegian Red Dairy Cattle Housed in Free Stalls in Relation to Environment, Parity and Stage of Lactation"

Tuyển tập các báo cáo nghiên cứu về bệnh thú y được đăng trên tạp chí y học General Psychiatry cung cấp cho các bạn kiến thức về ngành y đề tài: Lameness and Claw Lesions of the Norwegian Red Dairy Cattle Housed in Free Stalls in Relation to Environment, Parity and Stage of Lactation. | Acta vet. scand. 2005 46 203-217. Lameness and Claw Lesions of the Norwegian Red Dairy Cattle Housed in Free Stalls in Relation to Environment Parity and Stage of Lactation By . Sogstad1 T. Fjeldaas1 and O. 0sterảs1 2 Norwegian School of Veterinary Science . Box 8146 Dep. 0033 Oslo Norway 2TINE Norwegian Dairies . Box 58 1431 Ẳs Norway. Sogstad ẢM Fjeldaas T Osterâs O Lameness and claw lesions of the Norwegian red dairy cattle housed in free stalls in relation to environment parity and stage of lactation. Acta vet. scand. 2005 46 203-217. - Approximately 88 of Norwegian dairy cattle are housed in tie stalls. Free stall housing for all dairy cattle will be implemented within 20 years. This means that the majority of existing stalls will be rebuilt in the near future. Fifty-seven free stall herds of the Norwegian Red breed were randomly selected and 1547 cows and 403 heifers were trimmed by 13 claw trimmers during the late winter and spring of 2002. The claw trimmers had been taught diagnosing and recording of claw lesions. Environment management- and feeding routines were also recorded. Fifty-three herds had concrete slatted alleys while 4 had solid concrete. Thirty-five herds had concrete as a stall base while 17 had rubber mats 2 had wood and 3 had deep litter straw beds. The prevalence of lameness was in hind claws. Models for lameness and claw lesions were designed to estimate the influence of different risk factors and to account for the cluster effects within herd and claw trimmer. Detected risk factors for lameness were parity three and above and narrow cubicles for heel horn erosions lactation stage around 5-7 months after calving and solid concrete alleys for haemorrhages of the white line lactation stage around 3-5 months after calving and solid concrete alleys for haemorrhages of the sole parity one lactation stage around 57 months after calving and short cubicles for white line fissures slatted concrete alleys for asymmetrical claws parities

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