From the data for New Zealand in Part I of the Synthesis and Assessment (S&A) report the following should be noted:
Enteric fermentation – CH₄
Tables 4.2 and 4.3

• There are small differences between the animal species population reported in the CRF and FAO statistical information
• IEFs for sheep are higher than IPCC default value

Table 4.4

• There are large inter-annual increases in the CH₄ emissions from dairy cattle (overall increase between 1990 and 2004: about 71%)

Table 4.5b

• There are inter-annual fluctuations in the IEF for dairy cattle (overall increase between 1990 and 2004: 10.5%)

CH₄ from manure management
Tables 4.6 and 4.7, and 4.10a

• The implied emission factors for dairy cattle, non-dairy cattle, and sheep are the among the lowest between reporting Parties and are lower than the IPCC default values
• Large reported increase of emissions between 1990 and 2004 (about 24%)

N₂O from manure management
Tables 4.8, 4.9 and 4.10b

• Large reported increase of emissions between 1990 and 2004 (about 67%)

N₂O from agricultural soils
Table 4.14

• For pasture, range, and paddock manure, the N₂O IEF value is half of the IPCC default value
• Most parameters (fractions) used to estimate N₂O emissions from agricultural soils correspond to the default IPCC values