Some Notes on Livestock Production among Negev Bedouin Tribes

Inconsistencies in the estimated phosphorus requirements of growing pigs have come to light in recent years due to environmental constraints being imposed on the livestock production sector. Values of a net requirement estimated by the ARC (1981) extend from 4.6 g/day for 25kg liveweight to 5.2 g/day for 45kg pigs, but current literature suggesting that the actual requirement may be lower (eg Jongbloed and Everts, 1991) calls for a revision of previous recommendations.Around two thirds of the total phosphorus in cereals exists in the form of insoluble phytates which must be degraded before the phosphorus can be absorbed in the intestine. Under experimental conditions, the use of phytase in pig diets has demonstrated consistent improvements in phosphorus digestibility. The enzyme hydrolyses phytate by stepwise removal of orthophosphates, which become available for absorption in the gut. Although quantification of phytase/phosphorus substitution is as yet undetermined, digestibility results so far indicate that if used correctly the enzyme could largely replace inorganic phosphates, particularly in regions where soil phosphate levels are of concern.

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Estimating the Impact of Decoupled Payments on Farm Production in Northern Ireland: An Instrumental Variable Fixed Effect Approach

Sustainability ◽

10.3390/su12083222 ◽

2020 ◽

Vol 12 (8) ◽

pp. 3222

Author(s):

Kehinde Oluseyi Olagunju ◽

Myles Patton ◽

Siyi Feng

Keyword(s):

Northern Ireland ◽

Agricultural Policy ◽

Instrumental Variable ◽

Fixed Effect Model ◽

Livestock Production ◽

Fixed Effect ◽

Agricultural Subsidies ◽

Decoupled Payments ◽

Current Production ◽

The Impact

The production stimulating impact of agricultural subsidies has been a well-debated topic in agricultural policy analysis for some decades. In light of the EU reform of the Common Agricultural Policy (CAP) in year 2005 in which agricultural subsidies were decoupled from current production decisions and the modification to this payment in 2015, this study investigates the impact of decoupled payments under these two reforms on livestock production in Northern Ireland. The study uses a farm-level panel dataset covering 2008–2016 period and employs an instrumental variable fixed effect model to control for relevant sources of endogeneity bias. According to the empirical results, the production impacts of decoupled payments were positive and significant but with differential impacts across livestock production sectors, suggesting that decoupled payments still maintain a significant effect on agricultural production and provide an indication of the supply response to changes in decoupled payments.

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Towards Sustainable Livestock Production: Estimation of Methane Emissions and Dietary Interventions for Mitigation

Sustainability ◽

10.3390/su13116081 ◽

2021 ◽

Vol 13 (11) ◽

pp. 6081

Author(s):

Pragna Prathap ◽

Surinder Singh Chauhan ◽

Brian J. Leury ◽

Jeremy James Cottrell ◽

Frank Rowland Dunshea

Keyword(s):

Management Strategies ◽

Livestock Production ◽

Mitigation Strategy ◽

Feed Additive ◽

Feeding Strategies ◽

Dietary Interventions ◽

Economic Implications ◽

Ch4 Emissions ◽

Limiting Step ◽

Routine Basis

The increasing need for sustainable livestock production demands more research in the field of greenhouse gas (GHG), particularly methane (CH4), measurement and mitigation. Dietary interventions, management, and biotechnological strategies to reduce the environmental impacts and economic implications of enteric CH4 emissions are needed. While the use of biotechnological interventions and management strategies can be challenging on a routine basis, feed additive supplementation appears to be the most researched, developed, and ready to use strategy to mitigate enteric CH4 emissions. This paper discusses various recently developed feeding strategies to reduce enteric CH4 emissions in livestock. Additionally, the manuscript reviews various technologies developed for CH4 estimation since the accurate and reliable estimation of CH4 emissions can be a limiting step in the development and adoption of any mitigation strategy.

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