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Effect of evaporative cooling and altitude on dairy cows milk efficiency in lowlands

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12220%2F19%3A43899764" target="_blank" >RIV/60076658:12220/19:43899764 - isvavai.cz</a>

  • Result on the web

    <a href="https://link.springer.com/content/pdf/10.1007%2Fs00484-019-01828-5.pdf" target="_blank" >https://link.springer.com/content/pdf/10.1007%2Fs00484-019-01828-5.pdf</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1007/s00484-019-01828-5" target="_blank" >10.1007/s00484-019-01828-5</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Effect of evaporative cooling and altitude on dairy cows milk efficiency in lowlands

  • Original language description

    The objective of this current work was to determinate the effect of high temperatures on milk production of dairy cows in southern Slovakia in the year 2015. The hypotheses that milk production is influenced by the altitude and cooling were tested. Production data included 227,500 test-day records belonging to 34 Holstein breed herds situated in lowlands, 115 to 150 m above sea level (ASL) and kept in free-stall housing. Dairy farms were classified into groups based on cooling system. The first group of cows (19 herds) was cooled evaporative (foggers) and forced ventilation, and the second group (15 herds) was using cooled only forced ventilation (automatically controlled fans in housing and feeding areas). During the period from May to September, 36 summer and 22 tropical days were recorded, 37 days had a mean thermal humidity index value above 72.0, and on 34 days we recorded mean values above 78.0. The highest milk yields were recorded at the altitude 1 (115 m ASL) (9219.0 kg year−1 ;10327.0 kg year−1) and the lowest at the altitude 2 (126 m ASL) (7598.7 kg year−1; 8470.21 kg year−1) (P &lt; 0.001). Dairy cows cooled evaporative milked significantly more milk than cows cooled only with forced air flow (9650.4 kg vs. 8528.0 kg; P &lt; 0.001). Fat and protein production differed also significantly (364.0 kg vs. 329.5 kg, P &lt; 0.001; 312.2 kg vs. 279.7 kg, P &lt; 0.001). It can be concluded that not only heat stress but also location farm above sea level can affect milk production. Evaporative cooling associated with increased air velocity is the appropriate protection against high temperatures.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    40201 - Animal and dairy science; (Animal biotechnology to be 4.4)

Result continuities

  • Project

    <a href="/en/project/QK1910438" target="_blank" >QK1910438: Reduction the use of antibiotics by environmentally-friendly prebiotic and probiotic feed additives in the nutrition of calves</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2019

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    International Journal of Biometeorology

  • ISSN

    0020-7128

  • e-ISSN

  • Volume of the periodical

    64

  • Issue of the periodical within the volume

    listopad

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    12

  • Pages from-to

    "433–444"

  • UT code for WoS article

    000498005200001

  • EID of the result in the Scopus database

    2-s2.0-85075376386