Resumo

MONTAGNA, F.; SCRIPNIC, E.  e  FORABOSCO, F.. Intensification of production, low emission pathways and sustainable strategies for backyard, layer and broiler chickens. S. Afr. j. anim. sci. [online]. 2019, vol.49, n.3, pp.534-545. ISSN 2221-4062.  http://dx.doi.org/10.4314/sajas.v49i3.14.

Meat and eggs produced by chickens represent an important economic resource in many economies. In future, global greenhouse gas (GHG) emissions produced by chickens will increase due to greater food demand. This study analyses the GHG emissions of chickens and identifies sustainable policy strategies for production intensification and GHG reduction. It advances beyond previous studies by combining GHG reduction and improving meat and egg production rather than reporting mitigation options only, and can thus provide low-emission pathways. The contemporaneous intensification of chicken production and GHG emission reduction are feasible for broiler, layer and backyard chickens in Moldova. For farmers, this important goal can be achieved by using feeds of good quality and high digestibility. An efficient utilization of feeds for backyard chickens (by a dietary replacement of 10% dry matter (DM) intake of fresh grass with 10% DM intake of barley) had the effect of reducing the total emissions to 78179, 79682 and 81238 tons of carbon dioxide-equivalent/year (t CO₂-eq/year), increasing meat production to 2376, 2422 and 2469 t carcass weight/year and increasing egg production (in shell) to 47846, 48793, and 49741 t eggs/year with an increase of chickens of 2%, 6% and 10% per year, respectively. Policymakers can do a great deal to support the abatement of chicken emissions by developing long-term strategies, and regulations that are aimed towards mitigation targets and technologies. To effectively maximize emission reduction and increase production, however, policymakers must overcome the existing national barriers.

Palavras-chave : feed; greenhouse gas; manure; mitigation; policy.

        · texto em Inglês     · Inglês ( pdf )