To investigate the greenhouse gases emissions from the animal feeding and waste management of livestock and poultry, methane and nitrous oxide emissions were estimated from the local measurement and the IPCC guidelines during 1990 to 2010 in Taiwan. Hog is the major livestock and follows by goat and cattle; while chicken is the major poultry and follows by duck and geese. Methane emission from enteric fermentation of livestock was 30.8 Gg in 1990, increased to 39.2 Gg in 1996, and then decreased gradually to 29.9 Gg in 2010. Methane emission from the waste management was 48.5 Gg in 1990, reached the peak value of 60.7 Gg in 1996, and then declined to 35.9 Gg in 2010. In the case of poultry, methane emission from enteric fermentation and waste management was 15.7 to 22.7 ton, and 4.5 to 6.8 Gg, respectively. Nitrous oxide emission from waste management of livestock was 0.78 ton in 1990, increased to 0.86 ton in 1996, and then decreased to 0.53 ton in 2010. Nitrous oxide emission from waste management of poultry was higher than those of livestock. It was 1.11 ton in 1990, increased to 1.71 ton in 2006, and then decreased to 1.53 ton in 2010. There is an urgent need to reduce methane emission from enteric fermentation and recover methane from anaerobic waste treatment for energy in livestock and poultry feeding in Taiwan.
為探討畜產養殖、家畜和家禽廢棄物處理時溫室氣體排放情形,以本土實地測定值和IPCC準則推估1990年至2010年臺灣畜產養殖時甲烷和氧化亞氮排放量。豬為主要家畜,其次為羊和牛。而雞則為主要的家禽,其次為鴨和鵝。1990年家畜腸內發酵排放甲烷30.8 Gg,1996年增加至39.2 Gg,而後逐漸減少至2010年之29.9 Gg。家畜廢棄物處理時1990年排放甲烷48.5 Gg,1996年增加至60.7 Gg,而後逐漸減少至2010年之35.9 Gg。在家禽方面,腸內發酵和廢棄物處理時分別排放甲烷15.7-22.7公噸和4.5-6.8Gg。家畜廢棄物處理時1990年排放氧化亞氮0.78公噸,1996年增加至0.86公噸,而後逐漸減少至2010年之0.53公噸。家禽廢棄物處理時氧化亞氮排放高於家畜。1990年排放氧化亞氮1.11公噸,2006年增加至1.71公噸,而後逐渐減少至2010年之1.53公噸。因而臺灣急需設法降低家畜和家禽養殖時,腸內發酵溫室氣體排放,同時設法回收廢棄物厭氣處理時甲烷排放,以供能源使用。