VSE knjižnice (vzajemna bibliografsko-kataložna baza podatkov COBIB.SI)
  • Heat tolerance in Mashona beef cows in semi-arid rangelands: does con-formation matter? [Elektronski vir]
    Matope, Alphonce ...
    High temperatures and frequent heat waves raise concerns about heat stress in cattle in grass-based systems, especially in arid and semiarid areas. This study analysed the relationship between ... conformation traits and physiological pa-rameters associated with heat stress in Mashona cattle. A total of 200 records from fifty cows were used to study the relation-ships between seven conformation traits and physiological pa-rameters associated with heat stress. Body conformation traits were categorised into three principal components related to body capacity (body depth, flank circumference, chest girth), frame size (stature and body length), and loose skin fold (navel height and dewlap size). As the size of abdominopelvic and tho-racic cavities increased, respiratory rate, heart rate, and rectal temperature decreased significantly, while blood triiodothyro-nine concentration increased. Cattle with deeper bodies, larger flanks, and larger chest girths had significantly lower heart rate, respiratory rate, and rectal temperature but higher blood tri-iodothyronine concentration than cattle with shallower bod-ies, smaller flanks, and smaller chest girths. Respiratory rate increased with increasing frame size. Large-framed cattle had significantly higher respiratory rate and lower blood thyroxine concentration. Small-framed cattle with larger chest girth, larg-er dewlap, and navel farther from the ground surface are better adapted to higher ambient temperatures.
    Vir: Acta agriculturae Slovenica [Elektronski vir]. - ISSN 1854-1941 (Vol. 119, No. 1, 2023, 11 str.)
    Vrsta gradiva - e-članek
    Leto - 2023
    Jezik - angleški
    COBISS.SI-ID - 154876419

    Povezava(-e):

    https://journals.uni-lj.si/aas/article/view/13630/12000
    Digitalna knjižnica Slovenije - dLib.si
    DOI

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