[Body and claw measurements and pressure distribution under the claws in calves of different cattle breeds].
In 58 female calves of the three breeds German Holstein (GH), German Brown (GB) and German Red (GR) the body weight and height were determined at the age of 79 to 188 days. At the right front limb and the left hind limb the following claw measurements were taken: dorsal border length, diagonal length, heel length and height, angle of the dorsal border and hardness of the claw horn. Furthermore, the punctual pressure under the medial and the lateral claw of the right front limb and the left hind limb were determined using an electronic measuring system. The GH calves weighing 136.8 kg were heavier than GB, which was the tallest breed with 106.2 cm height at the sacral bone. GR calves were the smallest (99.1 cm) and weighed 121.1 kg. The length of the diagonal and the angle of the dorsal border were smaller at the hind limb of all breeds which resulted in a smaller area of ground surface for the claw of this limb. The GR calves had the longest and flattest claws. The GB showed the highest pressures per cm2 at the front limb with 25.6 N/cm2 under both claws as well as at the hind limb with 26.7 N/cm2. The AR had the smallest pressure load with 20.8 N/cm2 at the front limb and 20.2 N/cm2 at the hind limb. The animals showed a larger relative weight load and area of ground surface on the medial claws of the front and hind limbs than on the lateral claws. The highest pressures were found underneath the rear part of the medial claw in all breeds. GB calves showed the highest average pressures (33.3 N/cm2 at the front limb) while GR calves had the lowest (26.3 N/cm2 at the hind limb). GR calves had the highest claw hardness at all measuring positions.
Institut für Tierzucht und Vererbungsforschung der Tierärztlichen Hochschule Hannover.
Christiane
C
Huth
Astrid
A
Russke
Birgit
B
Alsleben
Henning
H
Hamann
Ottmar
O
Distl
D000818:Animals; D001696:Biomechanical Phenomena; D001699:Biometry; D001835:Body Weight / Q000502:physiology; D001947:Breeding; D002417:Cattle / Q000033:anatomy & histology* / Q000235:genetics / Q000502:physiology*; D005260:Female; D006724:Hoof and Claw / Q000033:anatomy & histology* / Q000502:physiology*; D011312:Pressure