Table 11 Impacts of livestock diseases at varying prevalence on GHGe from backyard poultry production at the population (100,000 hens) and flock level
Performance parameters | Baseline | High | Low | 10-hen flock |
|---|---|---|---|---|
Low pathogenicity avian influenza | ||||
 Disease prevalence in population (%) | 0 | 50 | 10 | 90 |
 Total annual poultry CW production (metric tonnes) | 1146 | 1104 | 1138 | 0.107 |
 Change compared to baseline population (%) | - | -3.7 | -0.7 | -6.7 |
 Total annual chickens sold (‘000 head) | 1819 | 1752 | 1806 | 0.170 |
 Change compared to baseline population (%) | - | -3.7 | -0.7 | -6.7 |
 GHGe per kg poultry meat CW (CO2eq) | 10.31 | 10.56 | 10.36 | 10.79 |
 Change compared to baseline population (%) | - | 0.25 | 0.05 | 0.48 |
 Total annual poultry population GHGe (metric tonnes CO2eq) | 11,821 | 11,658 | 11,786 | 1.154 |
 Change in annual population GHGe if poultry production maintained (tonnes CO2eq) | - | 454 | 88.1 | .084 |
High pathogenicity avian influenza | ||||
 Disease prevalence in population (%) | 0 | 70 | 30 | 100 |
 Total annual poultry CW production (metric tonnes) | 1146 | 587 | 886 | 0.040 |
 Change compared to baseline population (%) | - | -48.8 | -22.7 | -65.1 |
 Total annual chickens sold (‘000 head) | 1819 | 932 | 1406 | 0.063 |
 Change compared to baseline population (%) | - | -48.8 | -22.7 | -65.1 |
 GHGe per kg poultry meat CW (CO2eq) | 10.31 | 12.24 | 10.87 | 14.19 |
 Change compared to baseline population (%) | - | 18.7 | 5.4 | 37.6 |
 Total annual poultry population GHGe (metric tonnes CO2eq) | 11,821 | 6301 | 9204 | 0.452 |
 Change in annual population GHGe if poultry production maintained (tonnes CO2eq) | - | 11,255 | 3475 | 2208 |
Avian infectious bronchitis | ||||
 Disease prevalence in population (%) | 0 | 75 | 20 | 95 |
 Total annual poultry CW production (metric tonnes) | 1146 | 921 | 1085 | 0.086 |
 Change compared to baseline population (%) | - | -19.6 | -5.4 | -24.7 |
 Total annual chickens sold (‘000 head) | 1819 | 1462 | 1722 | 0.137 |
 Change compared to baseline population (%) | - | -19.6 | -5.4 | -24.7 |
 GHGe per kg poultry meat CW (CO2eq) | 10.31 | 12.05 | 10.69 | 12.71 |
 Change compared to baseline population (%) | - | 16.9 | 3.6 | 23.3 |
 Total annual poultry population GHGe (metric tonnes CO2eq) | 11,821 | 10,881 | 11,532 | 1.069 |
 Change in annual population GHGe if poultry production maintained (tonnes CO2eq) | - | 2890 | 670 | 0.388 |
Newcastle disease | ||||
 Disease prevalence in population (%) | 0 | 80 | 25 | 95 |
 Total annual poultry CW production (metric tonnes) | 1146 | 982 | 1095 | 0.095 |
 Change compared to baseline population (%) | - | -14.3 | -4.5 | -17.0 |
 Total annual chickens sold (‘000 head) | 1819 | 1559 | 1738 | 0.151 |
 Change compared to baseline population (%) | - | -14.3 | -4.5 | -17.0 |
 GHGe per kg poultry meat CW (CO2eq) | 10.31 | 10.97 | 10.45 | 11.18 |
 Change compared to baseline population (%) | - | 6.4 | 1.3 | 8.4 |
 Total annual poultry population GHGe (metric tonnes CO2eq) | 11,821 | 10,278 | 11,285 | 1.003 |
 Change in annual population GHGe if poultry production maintained (tonnes CO2eq) | - | 1971 | 556 | 0.242 |