Laying hen production responses to least cost rations formulated with stochastic programming or linear programming with a margin of safety

An experiment with 480 DeKalb DK laying hens was conducted to study the effect of rations formulated with stochastic programming (STCH) or linear programming with a margin of safety (LPMS) over 12, 28-d periods. Rations were formulated to guarantee the requirement of methionine and lysine greater th...

Full description

Saved in:
Bibliographic Details
Published in:Poultry science 1994-08, Vol.73 (8), p.1290-1295
Main Authors: Cravener, T.L, Roush, W.B, D'Alfonso, T.H
Format: Article
Language:English
Subjects:
ALIMENTACION DE LOS ANIMALES
ALIMENTATION DES ANIMAUX
Animals
BESOIN NUTRITIONNEL
CALCIO
CALCIUM
CASCARA DE HUEVO
Chickens - physiology
COQUILLE D'OEUF
Cost-Benefit Analysis
COSTOS DE PRODUCCION
COUT DE PRODUCTION
EFFICACITE ALIMENTAIRE
EFICIENCIA DE CONVERSION DEL PIENSO
Eggs - standards
Female
FEMELLE
Food, Formulated
FORMULACIONES
FORMULATION
FOSFORO
HEMBRA
HUEVOS
LISINA
LYSINE
METHIONINE
METIONINA
MODELE MATHEMATIQUE
MODELOS MATEMATICOS
MORTALIDAD
MORTALITE
NECESIDADES DE NUTRIENTES
OEUF
Oviposition - physiology
PERFORMANCE DE PONTE
PESO
PHOSPHORE
POIDS
POLLO
POULET
PROGRAMACION LINEAL
PROGRAMMATION LINEAIRE
Programming, Linear
RENDIMIENTO EN LA POSTURA
Stochastic Processes
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An experiment with 480 DeKalb DK laying hens was conducted to study the effect of rations formulated with stochastic programming (STCH) or linear programming with a margin of safety (LPMS) over 12, 28-d periods. Rations were formulated to guarantee the requirement of methionine and lysine greater than or equal to 69%, in all rations, and Ca and P greater than or equal to either 69 or 90%. The four rations were: LPMS69 with Ca and P greater than or equal to 69%, LPMS90 with Ca and P greater than or equal to 90%, STCH69 with Ca and P greater than or equal to 69%, and STCH90 with Ca and P greater than or equal to 90%. Rations formulated with STCH were lower in cost than LPMS rations for respective probability levels. Costs per metric ton for LPMS69, LPMS90, STCH69, and STCH90 were $155.70, $157.71, $155.00, and $156.30, respectively. Compared to STCH rations, LPMS rations were overformulated in nutrients. There was no difference (P 0.05) in performance for hen-housed egg production, hen-day egg production, feed per dozen eggs, mortality, egg weight, or eggshell percentage
ISSN:0032-5791
1525-3171
DOI:10.3382/ps.0731290