Naslov
Relationship between morphological and milkability traits and udder health in dairy cows

Autori
Bobić, Tina ; Šperanda, Marcela ; Gantner, Vesna

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, ostalo

Izvornik
Proceedings of the First DairyCare Conference 2014 / Knight, C. H. - Kopenhagen : DairyCare COST Action FA1308, 2014, 37-37

ISBN
978-0-9930176-0-5

Skup
Health and Welfare of Dairy Animals

Mjesto i datum
Kopenhagen, Danska, 22.08.2014. - 23.08.2014

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Udder morphology ; Milkability ; Ultrasound ; Udder health

Sažetak
Morphological appearance of udder and teats are important link in milkability research (milk flow rate, milk flow curve appearance) and udder health. Teat canal dimension is in correlation with maximal milk flow. Teats canals are the first line of defense, so any injury and changes in teat tissues or teat orifice, increase risk of grate amount of microorganism breakthrough, consequently risk of mastitis occurrence. The aim of the investigation was determinate the morphological differences on teat tissue between Holstein and Simmental breeds and find out the relationship between udder health indicators (somatic cell counts logarithmically transformed ; LSSC) and milkability. The investigation was carried out on 60 dairy cows Simmental (S) and Holstein (H) breeds from the first to the third lactation. The milk flow rate measurement was done with electronic mobile milk flow meter Lactocorder. Morphological teats characteristics (teat canal length, teat wall thickness and teat cistern width) were measured by ultrasound machine (Tringa Linear Vet, Netherland). Significantly thinner teat wall (P<0.0001), wider teat cistern (P<0.01) and shorter teat canal (P<0.01) had Holstein cows. They also had faster maximal milk flow and higher milk amount per milking. Significantly higher positive correlation was determined in teat canal length and teat wall thickness (r=0.371 S ; r=0.447 H), and negative correlation between teat wall thickness and teat cistern width (r=-0.699 S ; r=-0.707 H). Cows with faster maximal (≥ 4.5 kg/min) and average milk flow (≥ 3.60 kg/min) had significantly (P<0.05) higher LSSC. Significant, but weak correlation was determined between LSSC and maximal milk flow (r=0.108 S ; r=0.143 H). Total amount of milk was in relationship (P<0.05) with teat cistern width (r=0.299) in Holstein cows, but not in Simmental cows (r=0.244). We can conclude that milkability and morphology of cows’ udder are in relation with udders health. Further investigation can direct to find out is udder health more influenced by genetic or environmental and/or management factors.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

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