International Livestock Centre for Africa
Addis Ababa, Ethiopia
December 1990
ILCA
The international Livestock Centre for Africa (ILCA) was established by the Consultative Group on International Agricultural Research (CGIAR) in 1974. ILCA is an autonomous, non-profit-making research, training and information centre with a mandate to improve livestock production throughout sub-Saharan Africa. It is supported by a number of CGIAR members including countries, development banks, international organisations and foundations.
ILCA conducts its own research programme, works closely with national agricultural research systems (NARS) in collaborative research projects and seeks to develop the research capacities of NARS by providing specialised training programmes and a range of information services.
ILCA Working Paper series
The ILCA Working Paper series comprise informally reviewed data analyses, case studies, systems studies and reference materials dealing with livestock production in sub-Saharan Africa.
ILCA Working Paper are distributed to a limited number of the Centre's general audience concerned with the particular subject discussed, with the aim of informing interested readers about past and on-going research and to stimulate discussion. They are not rigorously edited, and thus do not meet the standard of official ILCA publications. The views expressed in ILCA Working Papers do not necessarily reflect those of ILCA.
Comments on this paper are invited, and should be addressed to the (senior) author.
Correct citation: ILCA (International Livestock Centre for Africa). 1990. Livestock systems research manual. Working Paper 1, Vol. 2. ILCA, Addis Ababa, Ethiopia. pp. 125.
ISBN: 92-9053-174-0
This electronic document has been scanned using optical character recognition (OCR) software and careful manual recorrection. Even if the quality of digitalisation is high, the FAO declines all responsibility for any discrepancies that may exist between the present document and its original printed version.
References
Part A: Definitions and concepts
Part B: Problems confronted
Part C: Justifying the need for on-farm trials
Part D: Choosing the technology to test: The screening process
References
Section 2 - Module 2: Design, implementation, monitoring and evaluation of livestock on-farm trials
Part A: The role of on-station research
Part B: On-farm trials
Part D: Evaluation and re-design
Appendix 1: On-farm feeding trials: Additional considerations
Appendix 2: On-farm animal health trials: Additional considerations
References
Section 2 - Module 3: Analysing data from on-farm trials
Part A: Statistical analysis of on-farm trials
The paired t-test
Analysis of variance (ANOVA)
One-way analysis of variance
Analysis of variance for a randomised block design
Detailed treatment comparisons
Quantitative treatments
Presentation of results
ANOVA and factorial experiments
Unbalanced dataPart B: Financial analysis of on-farm trials
Definitions
Gross margins
Gross margin table
Partial budgets
Whole-farm budgeting
Cash-flow budgeting
Financial analysis of long-term projects
The net present value criterion
Benefit: Cost analysis
Internal rate of return
Other considerations in cash-flow analysis