A network simulation model of large herringbone and parallel milking parlors

A network simulation model of herringbone and parallel milking parlors was built. Parlor performance was predicted based on the number of cows milked per hour and the amount of milk harvested per shift. Modeled parlors operated using a task-oriented milking routine. The simulation also modeled milki...

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Bibliographic Details
Published in:Journal of dairy science 1996-11, Vol.79 (11), p.1960-1971
Main Authors: Thomas, C.V. (Michigan State University Extension, Sandusky.), DeLorenzo, M.A, Bray, D.R
Format: Article
Language:English
Subjects:
Animal productions
Animals
APLICACIONES DEL ORDENADOR
APPLICATION DES ORDINATEURS
Biological and medical sciences
Cattle
CHOIX DE LA DATE
Computer Simulation
Dairying - methods
ELECCION DE LA EPOCA
ELEMENT DE MATERIEL
ELEMENTOS DE MAQUINARIA
EXPLOITATION LAITIERE
Female
Fundamental and applied biological sciences. Psychology
GRANJAS LECHERAS
Lactation
MACHINE A TRAIRE
MAQUINAS DE ORDENO
METHODE STATISTIQUE
METODOS ESTADISTICOS
MODELE DE SIMULATION
MODELOS DE SIMULACION
Models, Theoretical
ORDENO
SALAS DE ORDENO
SALLE DE TRAITE
SIMULACION
SIMULATION
Terrestrial animal productions
TRAITE
Vertebrates
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Summary:A network simulation model of herringbone and parallel milking parlors was built. Parlor performance was predicted based on the number of cows milked per hour and the amount of milk harvested per shift. Modeled parlors operated using a task-oriented milking routine. The simulation also modeled milking personnel, milking system vacuum pressure and pulsation ratio, and milk yield per cow per milking. The probability distributions of the model components that were used for validation were fitted from data collected from four dairies with the following parlors: double-16 herringbone, double-20 herringbone, double-35 parallel, and double-40 parallel. All fitted distributions were continuous, nonnegative, and skewed to the right. The mean number of cows milked per hour (simulated and observed, respectively) was double-16 herringbone, 164.8 and 164.6; double-20 herringbone, 207.6 and 206.6; double-35 parallel, 319.2 and 320.2; and double-40 parallel, 361.6 and 362.5. Mean milk yields harvested per shift were double-16 herringbone, 9020 and 9030 kg; double-20 herringbone, 14,800 and 14,746 kg; double-35 parallel, 20,900 and 20,945 kg; and double-40 parallel, 27,100 and 26,974 kg, for simulated and observed yields, respectively. Differences between simulated and observed means for either variable were not significant
ISSN:0022-0302
1525-3198
DOI:10.3168/jds.S0022-0302(96)76567-0