title: A data envelope analysis to assess factors affecting technical and economic efficiency of individual broiler breeder hens.
abstract: This study evaluated the effect of feed allocation and energetic efficiency on technical and economic efficiency of broiler breeder hens using the data envelope analysis methodology and quantified the effect of variables affecting technical efficiency. A total of 288 Ross 708 pullets were placed in individual cages at 16 wk of age and assigned to 1 of 4 feed allocation groups. Three of them had feed allocated on a group basis with divergent BW targets: standard, high (standard x 1.1), and low (standard x 0.9). The fourth group had feed allocated on an individual bird basis following the standard BW target. Birds were classified in 3 energetic efficiency categories: low, average, and high, based on estimated maintenance requirements. Technical efficiency considered saleable chicks as output and cumulative ME intake and time as inputs. Economic efficiency of feed allocation treatments was analyzed under different cost scenarios. Birds with low feed allocation exhibited a lower technical efficiency (69.4%) than standard (72.1%), which reflected a reduced egg production rate. Feed allocation of the high treatment could have been reduced by 10% with the same chick production as the standard treatment. The low treatment exhibited reduced economic efficiency at greater capital costs, whereas high had reduced economic efficiency at greater feed costs. The average energetic efficiency hens had a lower technical efficiency in the low compared with the standard feed allocation. A 1% increment in estimated maintenance requirement changed technical efficiency by -0.23%, whereas a 1% increment in ME intake had a -0.47% effect. The negative relationship between technical efficiency and ME intake was counterbalanced by a positive correlation of ME intake and egg production. The negative relationship of technical efficiency and maintenance requirements was synergized by a negative correlation of hen maintenance and egg production. Economic efficiency methodologies are effective tools to assess the economic effect of selection and flock management programs because biological, allocative, and economic factors can be independently analyzed.
authors.affiliation: Faculty of Agricultural, Life and Environmental Sciences, University of Alberta, Edmonton, Canada T6G 2P5.
authors.forename: L F
authors.initials: LF
authors.lastname: Romero
authors.forename: M J
authors.initials: MJ
authors.lastname: Zuidhof
authors.forename: S R
authors.initials: SR
authors.lastname: Jeffrey
authors.forename: A
authors.initials: A
authors.lastname: Naeima
authors.forename: R A
authors.initials: RA
authors.lastname: Renema
authors.forename: F E
authors.initials: FE
authors.lastname: Robinson
mesh_terms: D000821:Animal Feed / Q000191:economics; D000818:Animals; D002645:Chickens / Q000254:growth & development / Q000502:physiology*; D004526:Efficiency; D004531:Eggs / Q000191:economics; D005260:Female; D010058:Oviposition; D012098:Reproduction; D012741:Sexual Maturation / Q000502:physiology