The effect of bedding amount on gas emissions from manure during storage
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Kuupäev
2017
Kättesaadav alates
Autorid
Šimon, J.
Vegricht, J.
Bradna, J.
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
One of the major agricultural pollutants of environment is manure from livestock. We
focused on dairy cows kept in the barns with straw bedding commonly used in the Czech
Republic. We tested the hypothesis that the amount of bedding used daily relative to the number
and size of animals kept has a significant effect on the emissions of gases from manure stored in
a manure pile. In the experiment, a group of 10 dairy cows of Holstein and Czech Red Pied breed
was housed in a stable bedded with various amounts of wheat straw (4–10 kg/livestock unit per
day). The manure was removed from the stable after 48 h and mixed was stored in cubic
containers with drain floor allowing measurement of manure leachate release. For 50 days we
measured weight, volume, weight of manure leachate and manure temperature. Decreasing stored
manure weight can be attributed to release of manure leachate and emissions of gases, primarily
water vapor, as a result of microbial activity and increased temperature in the manure during
storage. Using the calculated model, we found that daily production of emissions of water vapor
and other gases was related to bedding amount in a statistically significant manner (P < 0.001).
The cumulative amount of gas emissions grew rapidly in all treatments. Also total amount of
emissions was related to bedding amount in a statistically significant manner (P = 0.004). We
also found the relationship between internal manure temperature and the logarithm of the amount
of emissions produced to be statistically significant (P < 0.001).
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Märksõnad
dairy cows, manure storage, bedding amount, gas emissions, articles