Effect of slaughter age on quail (Coturnix japonica) growth, meat quality, and feed efficiency in Puerto Rico

dc.contributor.advisor Domenech Pérez, Katherine I. Torres Burgos, Yahaira Ivette College of Agricultural Sciences en_US
dc.contributor.committee Sánchez Rodríguez, Héctor L.
dc.contributor.committee Casas Guernica, Américo
dc.contributor.committee Pagán Morales, Melvin
dc.contributor.department Department of Animal Science en_US
dc.contributor.representative Rúa De La Asunción, Armando J. 2021-06-06T17:46:06Z 2021-06-06T17:46:06Z 2021-05-12
dc.description.abstract This study evaluated the growth and economic efficiency of raising quail in Puerto Rico while considering changes in meat quality due to age and sex to identify an optimal slaughter age. Carcass yield and composition, breast meat color, pH, tenderness, cost, and feed efficiency were measured. A total of 135 Japanese quail (Coturnix japonica) were use in a 5x2 factorial, where the main effects of slaughter age (28, 35, 42, 49, or 56d), gender (male or female), and their interaction were tested. Greatest carcass yield (67.24%) was obtained at 35d of age for both sexes. Abdominal fat increased in both sexes beginning at 42d. Age was the most influential factor affecting meat quality, where greater variability and decreased tenderness occurred as age increased. Greatest feed efficiency also occurred at 35d of age, with a feeding cost of $0.2720/quail. Considering all variables and our production conditions, optimal slaughter age was 35d. en_US
dc.description.abstract El objetivo del estudio fue determinar la edad óptima de sacrificio de codornices en Puerto Rico considerando cambios en calidad de carne afectados por edad y sexo. Se evaluó el rendimiento, composición de canal, color, pH, terneza, costo y eficiencia alimenticia. Se utilizaron 135 codornices (Coturnix japonica) en un arreglo factorial 5x2, donde se evaluó el efecto de edad (28, 35, 42, 49 y 56d), sexo (hembra y macho) y su interacción. El mayor rendimiento (67.24%) fue a los 35d en ambos sexos. La grasa abdominal aumentó a partir de 42d. La edad fue el factor más influyente sobre la calidad, donde hubo mayor variabilidad y una disminución en terneza a medida aumentaba la edad. El punto de mayor eficiencia alimenticia ocurrió a los 35d representando un costo total de alimentación de $0.2720/codorniz. Según las variables evaluadas y nuestras condiciones de producción, la edad óptima de matanza fue de 35d. en_US
dc.description.graduationSemester Spring en_US
dc.description.graduationYear 2021 en_US
dc.language.iso en en_US
dc.rights Attribution-NonCommercial-ShareAlike 3.0 United States *
dc.rights.holder (c) 2021 Yahaira Ivette Torres Burgos en_US
dc.rights.uri *
dc.subject Japanese quail en_US
dc.subject Meat quality en_US
dc.subject Slaughter age en_US
dc.subject Growth en_US
dc.subject Yield en_US
dc.subject.lcsh Quails -- Puerto Rico en_US
dc.subject.lcsh Japanese quail -- Feeding and feed -- Puerto Rico en_US
dc.subject.lcsh Quail culture -- Puerto Rico en_US
dc.subject.lcsh Meat -- Quality en_US
dc.subject.lcsh Coturnix en_US
dc.title Effect of slaughter age on quail (Coturnix japonica) growth, meat quality, and feed efficiency in Puerto Rico en_US
dc.type Thesis en_US
dspace.entity.type Publication Animal Industry en_US M.S. en_US
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