Abstract
The objective of this study was to determine Holstein Cattle body measurements using digital imaging DIPM methods. The ratios were calculated by dividing each measurement by another and the relationship between the ratios and the output characteristics were evaluated. For this reason, the body measurements of the 198 heads of Holstein cattle breed dairy cows were calculated by the Set Object Video System (SOVS) process. The ratios were calculated by dividing each body measurement to another then the relationship between these ratios and the characteristics including the daily average milk yield (DAMY), the number of inseminations per calving (NIPC), the age at insemination (AFI) and the age at first calving (AFC) were evaluated. The relationship between DAMY, NIPC, AFI, AFC and body measurements were; withers height (WH), back height (BH), rump height (RH), pin bone height (PBH) ), chest depth (CD), body length (BL), trunk length (TL), body area (BA) and body perimeter (BP) was low, negative and not statistical significantly (p>0.05). The highest R2 measured for DAMY by WH (0.389 (p
Highlights
Morpohological characteristics of domestic animals are one of the main subjects of animal breeding and one of the most explored by animal scientists
Morphological traits of dairy cattle were used as direct selection criteria for predicting type characteristics and longevity and indirect selection criteria as early herd life (Yavuz and Kaygisiz, 2015; Mimaryan and Yener, 2000)
Average milk yield was used as milk production parameters and the number of insemination per calving, age at first insemination, and age at first calving as fertility parameters in the study
Summary
Morpohological characteristics of domestic animals are one of the main subjects of animal breeding and one of the most explored by animal scientists. Phenotypic characteristics are utilized as important selection criteria in animal breeding. Various measurement, such as body height, BH, WH, BL, and CD are important morphological features of the animal body that are utilized to evaluate the individual identity, structural capacities, the relationship to the fertility levels, morphological type assessment and in particular, the identification of breeds and breeds of characters. Holstein cattle, are known to have improved over several years in terms of udder or dairy characteristics and to demonstrate morphological differences as compared to other yieldoriented genotypes. Differences in the shape and morphological characteristics of livestock genotypes that were systematically improved over many years in milk or meat yield were observed. Body structures play an important role in the longevity of the individual
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