The agricultural subsector of animal production is part of a complex interdependent farming system.
Analysis of livestock production cannot be based solely on input and output, but must also take into consideration other farming activities.
The interaction between animal production and other subsectors can be complementary, as in the use of manure; or competitive, as in the allocation of land to crops or livestock grazing.
The farming system as a whole, and animal production in particular, is influenced by external factors (including government policy on rural development, livestock development programmes and marketing), which must be considered in any analysis or evaluation.
DEFINITION AND ANALYSIS OF PRODUCTION COSTS
The farming system is defined as the combination of all farm enterprises/subsystems, management and farmer objectives and the interaction between them.
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It is a decision-making and land-use unit, comprising the farming household and the crop and livestock systems, which transforms land, labour, management and capital into products that can be consumed or sold.
Enterprises/subsystems are defined as the different subdivisions of the farming system, each producing one kind of crop or livestock product.
In the case of family poultry, the products are poultry meat and eggs, with manure as a by-product. The harvesting of family poultry for home consumption and sale can be considered as the management of a standing resource for economic yield.
In this respect, the economic principles applying to the management of fauna, parklands, fisheries, wood and timber forests and rangelands are more appropriate than the economic concepts more commonly applied to the labour and capital-dependent livestock production and other commercial farming industries.
METHODS AND CRITERIA FOR COST CALCULATION
The cost of production can be seen from various angles.
The inputs may be external (NonFactor costs) or internal (Factor costs). Internal input is under the control of the farming household, and includes land, labour, management and capital.
The cash involved in production represents either Cash (Paid) Costs or Non-Cash (Calculated) Costs. Another way to categorize the costs is to distinguish Variable Costs from Fixed Costs. Variable costs rise and fall with the size of the output and the level of the operation.
Variable costs (for items such as feed, vaccine and casual labour) can be controlled to some extent and are not incurred when there is no production. Fixed costs (for items such as taxes, insurance, interest, and depreciation on buildings and equipment), are incurred whether or not there is any output.
The Opportunity Cost principle is applied in farm cost accounting. Opportunity costs can be defined as the “income that would have been generated if the production resource/input/factor were put to the next best alternative use”.
Many farm enterprises/subsystems yield more than one product. Poultry produce eggs, meat and manure. When calculating the cost-price per unit of production, the cash value of the by-products (sold externally or used as a substitute in another enterprise/subsystem of the farm), must be subtracted from the Total Gross Costs.
This will result in the Total Net Costs. For the cost-price per unit of production, the Total Net Costs must be divided by the total number of units of production.
The cost-price calculation model splits production costs into two categories: Paid Costs and Calculated Costs.
Paid costs involve actual payment in cash or kind for inputs or services used.
Calculated costs are determined using mathematical formulae, and include the following:
- depreciation on the poultry house and equipment;
- interest on cash in hand and personal capital used to construct the poultry house and purchase equipment, birds and feed;
- maintenance of the poultry house and equipment; and
- labour supplied by the farm family.
Calculated Costs include Opportunity Costs as related to the national economy: for example, unemployment (including hidden unemployment) and high rates of devaluation of the national currency.
These form a part of the socio-economic reality for the smallholder, and influence the Opportunity Cost of labour (reduced by high unemployment) and of capital (which tends to move towards zero when the rate of currency devaluation is higher than the interest rate).
By making use of locally available and renewable materials for poultry housing and equipment, family poultry producers minimize the introduction of external capital into their enterprise.
Large-scale poultry production cannot really be compared with smallholder family poultry, because smallholders often face such constraints as the absence of organized marketing systems and the lack of price rewards for produce quality and uniformity.
Therefore, the cost-price calculation for large-scale poultry production (and also that for free-range commercial poultry production) may not be applicable to smallholder family poultry systems without modifications.
Elson (1992) showed that for layers, production costs (per dozen eggs produced) increased with space allowance (stock density) per hen.
The minimum stock density allowed in the EC (under EEC Council directive 1988/66) is 22 birds/m2 (450 cm2 /bird).
The production cost for birds housed in laying cages at this density is used as a baseline. The percent increases in cost over this baseline (each with their associated management system) are:
- 5 percent for aviaries;
- 7–12 percent for percheries (tiered wire floor aviaries) at 20 birds/m2 ;
- 15 percent for cages at 20 birds/m2 (750 cm2 /bird);
- 21 percent for deep litter systems at 7 birds/m2 ;
- 30 percent for straw yards at 3 birds/m2 ;
- 35 percent for semi-intensive systems at 0.1 birds/m2 (1000 birds/ha);
- 50 percent for free-range systems at 0.04 birds/m2 (400 birds/ha).