Influence of barn climate, body postures and milk yield on the respiration rate of dairy cows
Article
Article Title | Influence of barn climate, body postures and milk yield |
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ERA Journal ID | 44606 |
Article Category | Article |
Authors | Pinto, Severino (Author), Hoffmann, Gundula (Author), Ammon, Christian (Author), Amon, Barbara (Author), Heuwieser, Wolfgang (Author), Halachmi, Ilan (Author), Banhazi, Thomas (Author) and Amon, Thomas (Author) |
Journal Title | Annals of Animal Science |
Journal Citation | 19 (2), pp. 469-481 |
Number of Pages | 13 |
Year | 2019 |
Place of Publication | Poland |
ISSN | 1642-3402 |
Digital Object Identifier (DOI) | https://doi.org/10.2478/aoas-2019-0006 |
Web Address (URL) | https://www.sciendo.com/article/10.2478/aoas-2019-0006 |
Abstract | The main objective of this study was to identify the influences of different climatic conditions and cow-related factors on the respiration rate (RR) of lactating dairy cows. Measurements were performed on 84 lactating Holstein Friesian dairy cows (first to eighth lactation) in Brandenburg, Germany. The RR was measured hourly or twice a day with up to three randomly chosen measurement days per week between 0700 h and 1500 h (GMT + 0100 h) by counting right thoracoabdominal movements of the cows. Simultaneously with RR measurements, cow body postures (standing vs. lying) were documented. Cows’ milk yield and days in milk were recorded daily. The ambient temperature and relative humidity of the barn were recorded every 5 min to calculate the current temperature-humidity index (THI). The data were analyzed for interactions between THI and cow-related factors (body postures and daily milk yield) on RR using a repeated measurement linear mixed model. There was a significant effect of the interaction between current THI category and body postures on RR. The RRs of cows in lying posture in the THI < 68, 68 ≤ THI < 72 and |
Keywords | dairy cow, heat stress, temperature-humidity index, cow-related factors, naturally ventilated barn |
ANZSRC Field of Research 2020 | 300302. Animal management |
Byline Affiliations | Leibniz Institute for Agricultural Engineering and Bioeconomy, Germany |
Free University of Berlin, Germany | |
Civil Engineering and Surveying | |
School of Civil Engineering and Surveying | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q552z/influence-of-barn-climate-body-postures-and-milk-yield-on-the-respiration-rate-of-dairy-cows
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