Emissions of carbon dioxide and methane from dairy cattle manure

Abstract

There is an increasing interest in reducing production and emissions of greenhouse gases to combat global warming. Greenhouse gases can be produced through animal production operations. One of the major sources of greenhouse gases emitted from the animal farming is dairy cattle barns. This study measured the CH4 and CO2 emissions from dairy cattle manure decomposition trapped inside the static chambers through anaerobic digestion process by bacteria and at regular intervals by focusing on animal age and manure storage method. Samples were analyzed using gas chromatography for the estimation of CH4 and CO2 emissions. Four Friesian cows were used representing two stages of cow age (3 and 10 years old) and 1 kg of fresh manure samples were collected (feces and mixture of feces with urine). It was found that CH4 and CO2 emissions produced by cattle at the age of 3 years were higher than age of 10 years. In addition, gases emitted from fresh slurry feces were higher than liquid manure for both ages (3 and 10 years). This is due to the fact that the organic matter degradation in the feces and amount of fresh slurry feces is twice the amount of fresh slurry feces used in the liquid manure, as well as the organic matter in the manure mass for the age of 3 years is higher than for the age of 10 years. The findings from this study can provide information for improving manure management practices in animal farms.

Interaction of Filth Flies and Epigeal Arthropods with Soil Nitrogen and Gas Emissions in Grazing Systems under a Legacy of Low Fertilization

“…Other researchers have also found a positive correlation between insect activity on cattle manure and CO 2 emissions [22,66], and between higher soil temperatures and CO 2 emissions during the summer season [9]. laboratory conditions (units were transformed from percentages into g per kg of dry manure considering manure moisture of 85%) [63].…”

“…The cumulative CO 2 emitted during the 16-day sampling period (cumulative CO 2 ) was between 0.1 and 136.5 g CO 2 •kg −1 manure. Hanafiah et al found cumulative CO 2 emissions between 30.5 and 50.9 g CO 2 •kg −1 manure after 8 days of sampling under laboratory conditions (units were transformed from percentages into g per kg of dry manure considering manure moisture of 85%) [63].…”

Türkiye’de Buğday Üretiminde Kullanılan Gübrelerin Karbon Ayak İzine Etkisi

“…Ayrıca, NH3 ve N2O gibi sera gazı emisyonlarına neden olan bileşiklerin oluşuna neden olmaktadır (Taban ve Turan 2012 ). Doğal gübrelerin yaşam döngüsü incelendiğinde hem metan hem CO2 açığa çıkardıkları bilinmektedir (Hanafiah 2021). Sentetik gübreler ise hem üretimleri sırasında, hem de azotlu gübrelerde bulunan azotun, gübre toprağa atıldıktan sonra havaya karışması sebebiyle sera gazlarına sebep olmaktadır.…”