scholarly journals Resource use and environmental impacts from Australian chicken meat production

2017 ◽  
Vol 140 ◽  
pp. 675-684 ◽  
Author(s):  
S.G. Wiedemann ◽  
E.J. McGahan ◽  
C.M. Murphy
Keyword(s):  
Environmental Impacts ◽  
Resource Use ◽  
Chicken Meat ◽  
Meat Production

scholarly journals Progress towards reduced-crude protein diets for broiler chickens and sustainable chicken-meat production

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Sonia Yun Liu ◽  
Shemil P. Macelline ◽  
Peter V. Chrystal ◽  
Peter H. Selle
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Broiler Chickens ◽  
Crude Protein ◽  
Plasma Concentrations ◽  
Essential Amino Acids ◽  
Chicken Meat ◽  
Meat Production ◽  
Accurate Identification ◽  
Reduced Crude Protein

AbstractThe prime purpose of this review is to explore the pathways whereby progress towards reduced-crude protein (CP) diets and sustainable chicken-meat production may be best achieved. Reduced-CP broiler diets have the potential to attenuate environmental pollution from nitrogen and ammonia emissions; moreover, they have the capacity to diminish the global chicken-meat industry’s dependence on soybean meal to tangible extents. The variable impacts of reduced-CP broiler diets on apparent amino acid digestibility coefficients are addressed. The more accurate identification of amino acid requirements for broiler chickens offered reduced-CP diets is essential as this would diminish amino acid imbalances and the deamination of surplus amino acids. Deamination of amino acids increases the synthesis and excretion of uric acid for which there is a requirement for glycine, this emphasises the value of so-called “non-essential” amino acids. Starch digestive dynamics and their possible impact of glucose on pancreatic secretions of insulin are discussed, although the functions of insulin in avian species require clarification. Maize is probably a superior feed grain to wheat as the basis of reduced-CP diets; if so, the identification of the underlying reasons for this difference should be instructive. Moderating increases in starch concentrations and condensing dietary starch:protein ratios in reduced-CP diets may prove to be advantageous as expanding ratios appear to be aligned to inferior broiler performance. Threonine is specifically examined because elevated free threonine plasma concentrations in birds offered reduced-CP diets may be indicative of compromised performance. If progress in these directions can be realised, then the prospects of reduced-CP diets contributing to sustainable chicken-meat production are promising.

Addressing the shortfalls of sorghum as a feed grain for chicken-meat production

2021 ◽  
pp. 1-13
Author(s):  
Peter H. Selle ◽  
Robert J Hughes ◽  
Ian D. Godwin ◽  
Ali Khoddami ◽  
Peter V. Chrystal ◽  
...  
Keyword(s):  
Chicken Meat ◽  
Meat Production

Current issues and controversies in assessing the environmental impacts of livestock production.

2021 ◽  
Vol 16 (044) ◽  
Author(s):  
Judith L. Capper
Keyword(s):  
Environmental Impacts ◽  
Resource Use ◽  
Management Practices ◽  
Ghg Emissions ◽  
Livestock Production ◽  
Environmental Indicators ◽  
Environment Impact ◽  
Trade Offs ◽  
Specific Practice ◽  
Over Time

Abstract The environment impact of livestock production is one of the most significant issues within agriculture. Global concerns over climate change, resource use, pollution and other environment indicators means that producers must implement practices and systems to reduce environmental impacts, yet this may only be achieved through assessments that allow impacts to be quantified, benchmarked and improved over time. Although environmental indicators are widely accepted, the metrics by which these are assessed continue to evolve over time as assessment objectives gain clarity and focus, and as the science relating to controversial topics (e.g. global warming or carbon sequestration) becomes more refined. however, significant negative trade-offs may occur between different metrics and denominators such that a specific practice or system may appear to have greater or lesser impacts, depending on assessment methodology. A number of tools and models have been developed to empower producers in quantifying environmental impacts, which will be increasingly important is satisfying future consumers' hunger for information as well as food. These tools must be supplied in tandem with information as to the potential consequences of changing management practices and systems. At present however, tools available are based on differing methodologies, are often opaque in their background calculations and do not necessarily account for all the factors that influence environmental impacts from livestock. There is a clear need for robust tools that can be used as standards for assessing environmental impacts from the global livestock industry and that go beyond GHG emissions to produce a more rounded holistic assessment.

Understanding the resource-use and environmental impacts of bioethanol production in China based on a MRIO-based hybrid LCA model

Energy ◽  
2020 ◽  
Vol 203 ◽  
pp. 117877 ◽  
Author(s):  
Changbo Wang ◽  
Arunima Malik ◽  
Yafei Wang ◽  
Yuan Chang ◽  
Mingyue Pang ◽  
...  
Keyword(s):  
Environmental Impacts ◽  
Resource Use ◽  
Bioethanol Production ◽  
Hybrid Lca

scholarly journals Life Cycle Performance of Various Energy Sources Used in the Czech Republic

Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5833
Author(s):  
Markéta Šerešová ◽  
Jiří Štefanica ◽  
Monika Vitvarová ◽  
Kristina Zakuciová ◽  
Petr Wolf ◽  
...  
Keyword(s):  
Czech Republic ◽  
Life Cycle ◽  
Environmental Impacts ◽  
Resource Use ◽  
Power Plants ◽  
Cycle Performance ◽  
Energy Sources ◽  
Black Coal ◽  
The Czech Republic ◽  
The Impact

As both the human population and living standards grow, so does the worldwide electricity demand. However, the power sector is also one of the biggest environmental polluters. Therefore, options are currently being sought aimed at reducing environmental impacts, one of the potential tools for which concerns the use of life cycle assessment. This study, therefore, focuses on the most commonly used nonrenewable (black coal, lignite, natural gas and nuclear) and renewable sources (wind, hydro and photovoltaic) in the Czech Republic in terms of their construction, operation, and decommissioning periods. Environmental impacts are assessed via the use of selected impact categories by way of product environmental footprint methodology. The results highlight the potential environmental impacts associated with electricity generation for each of the primary energy sources. Black coal and lignite power plants were found to contribute most to the global warming, resource use, energy carriers and respiratory inorganics categories. On the other hand, the impact on water depletion and resource use, mineral and metals categories were found to be most significantly affected by the production of electricity from photovoltaic power plants. Finally, it is proposed that the results be employed to design scenarios for the future energy mix.

Environmental impacts of combined milk and meat production in Norway according to a life cycle assessment with expanded system boundaries

2013 ◽  
Vol 155 (2-3) ◽  
pp. 384-396 ◽  
Author(s):  
Anne-Grete Roer ◽  
Astrid Johansen ◽  
Anne Kjersti Bakken ◽  
Kristin Daugstad ◽  
Gustav Fystro ◽  
...  
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Environmental Impacts ◽  
Meat Production ◽  
System Boundaries

scholarly journals Influence of YEA-SACC 1026 Probiotic on Meat Quality in Chicken Broilers

2017 ◽  
Vol 74 (1) ◽  
pp. 64
Author(s):  
Ionel TOADER ◽  
Aurel ȘARA ◽  
Mihai BENTEA ◽  
Mirela CADAR
Keyword(s):  
Chemical Composition ◽  
Meat Quality ◽  
Experimental Period ◽  
Chicken Meat ◽  
Meat Production ◽  
Human Consumption ◽  
Important Criterion

The use of probiotics, as fodder supplement for chickens, could stimulate meat quality that is a very important criterion especially for human consumption markets. The study had in view the effects of powdery YEA-SACC 1026 probiotic on meat quality in chicken broilers. There were studied 75 meat chickens of Ross-308 hybrid grouped on three lots of 25 capita/lot during an experimental period of 42 days. In the mixed fodder of experimental lots was added powdery YEA-SACC 1026 probiotic in proportion of 0.1% in lot L1(E) and in proportion of 0.25% in lot L2(E). In the experiment end, were effected control slaughtering of 5 chickens per each lot, to establish the meat quality by trenching and meat chemical composition. After YEA-SACC 1026 probiotic administration, as fodder supplement, the chicken meat quality was improved by increasing the weight of superior quality meat in carcass. The obtained results confirm the favourable effects of probiotics on chicken meat production and its quality

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