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UDDER MORPHOLOGY TRAITS OF ISTRIAN SHEEP

Zvonimir Prpić ; Zavod za specijalno stočarstvo, Agronomski fakultet Sveučilišta u Zagrebu, Hrvatska
Vesna Pavić ; Zavod za specijalno stočarstvo, Agronomski fakultet Sveučilišta u Zagrebu, Hrvatska
Boro Mioč ; Zavod za specijalno stočarstvo, Agronomski fakultet Sveučilišta u Zagrebu, Hrvatska
Ivan Vnučec ; Zavod za specijalno stočarstvo, Agronomski fakultet Sveučilišta u Zagrebu, Hrvatska
Velimir Sušić ; Zavod za stočarstvo, Veterinarski fakultet Sveučilišta u Zagrebu, Hrvatska

Sažetak

The aim of this study was to determine the udder morphology of Istrian sheep using objective measurements and subjective evaluation. For that purpose, udder morphology traits of 196 autochthonous Istrian sheep, during the fourth month of lactation period, on five family farms in Istria were investigated. All investigated animals had symmetrical udders with no visible signs of clinical mastitis. Measurements of morphological traits and subjective evaluation of udder type and teat position were taken immediately before the evening milking. The average udder depth (distance between abdominal wall and the udder floor) was 16.9 cm; udder width 14.6 cm; udder circumference (measured on the widest part of udder) 39.6 cm; right cistern height (distance between the right teat base and the udder floor) 2.3 cm while the udder cleft (distance between the end of medial suspensory ligament and the udder floor) was 2.63 cm. Also, the average right teat length (3.1 cm) and width (1.8 cm) was determined at the medium point of the teats. The average right teat angle (rear view, measured in degrees from vertical) was 57.8º and distance between the ends of teats was 17.1 cm. The average score for right teat position (lateral view, scored with 1 = turned backwards, 2 = vertical position, 3 = a little forward, 4 = forward, and 5 = much forward) was 3.16, however 62% and about 25% of animals were scored with values 3 and 4, respectively. As with cattle, cistern height, teat position and angle, and size of teats are related to aptitude of the udder for mechanical milking. For that reason, it would be justified to modify future sheep breeding programs in order to genetically improve the morphology traits of the udder.

Ključne riječi

Istrian sheep; udder morphology; milk production; milking

Hrčak ID:

24133

URI

https://hrcak.srce.hr/24133

Datum izdavanja:

15.1.2008.

Podaci na drugim jezicima: hrvatski

Posjeta: 1.564 *