Abstract
Background: A limited number of studies in non-dairy sheep breeds have investigated the assessment of udder morphology on a linear scale. The aim of this study was to use the linear scoring approach to determine the morphological udder traits of non-dairy Norduz ewes. Methods: Udder traits were measured once in mid-lactation (approximately 90 days) for each ewe before the milking. Udder measurements included the following traits: udder width, udder circumference, udder length, udder depth, teat diameter, teat length, the distance between two teats and teat height from the ground. Linear scoring was done after the udder measurements were taken. Result: Linear udder scores for teat placement, udder depth, the degree of separation of two halves and the degree of udder suspension were found as 4.10, 6.88, 3.15 and 7.54, respectively. Measurements related to udder size were positively and significantly correlated with each other. As a result, the 9-point linear scale utilized in this study was found to be appropriate for evaluating the udder shape of Norduz ewes. However, it would be beneficial to develop an uncomplicated, easy and practical linear scale that accurately evaluates udder morphology for non-dairy breeds.
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