Matthieu Lesnoff,
Renaud Lancelot,
Charles-Henri Moulin,
Samir Messad,
Xavier Juanès,
Christian Sahut
e.a.
Springer Netherlands
2014e druk, 2014
9789401790253
Calculation of Demographic Parameters in Tropical Livestock Herds
A discrete time approach with LASER animal-based monitoring data
Specificaties
Gebonden, 99 blz.
|
Engels
Springer Netherlands |
2014e druk, 2014
ISBN13: 9789401790253
Rubricering
Juridisch
:
Verwachte levertijd ongeveer 9 werkdagen
Samenvatting
Having indicators to assess the effect of zootechnical, sanitary, economic or political intervention or the impact of environmental risks makes it possible to draw up strategies for improving domestic animal populations. This handbook is a compilation of the main concepts relating to the definition and calculation of demographic rates for largely non-intensive tropical animal farms. It is intended to be educational, and should help students, technicians, engineers, researchers and development staff to understand the definitions and formulas encountered in the literature more clearly and make them more self-sufficient in terms of analyses.
Specificaties
ISBN13:9789401790253
Taal:Engels
Bindwijze:gebonden
Aantal pagina's:99
Uitgever:Springer Netherlands
Druk:2014
Inhoudsopgave
1. Introduction.- 1.1. Background and objectives.- 1.2. Animal-based monitoring.- 1.3. A selection of parameters.- 1.4. Organization of the handbook.- 2. Grouping demographic data.- 2.1. Cohort splitting.- 2.2. Pseudo-cohort splitting.- 3. Mortality and offtake rates.- 3.1. One type of removal.- 3.2. Case with two types of removal.- 3.3. Additional points.- 4. Other demographic rates.- 4.1. Reproduction rates.- 4.2. Synthetic rates.- 4.3. Global demographic rates.- 5. Package laserdemog.- 5.1. R software.- 5.2. Functions in laserdemog.- 5.3. Additional points.- 6. Numerical examples.- 6.1. Example 1 – Overall description.- 6.2. Example 2 – More on reproduction rates.- 6.3. Example 3 – Test of a treatment on mortality.- 7. Annexes.- 7.1. Rates p and h in survival analyses.- 7.2. R materials.- 7.3. Structure of tables generated by hsplit and vsplit.- 8. Bibliography.
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