Prediction of breeding values for tenderness of market animals form measurements on bulls

Data were tenderness measures on steaks from 237 bulls (Group II) slaughtered after producing freezable semen and on 1,431 related steers and heifers (market animals, Group I) from Angus, Hereford, Pinzgauer, Brahman, and Sahiwal crosses from the Germ Plasm Evaluation project at the U.S. Meat Animal...

Full description

Saved in:
Bibliographic Details
Published in:Journal of animal science 1996-11, Vol.74 (11)
Main Authors: Barkhouse, K.L. (Kellogg's Science and Technology Center, Battle Creek, MI.), Van Vleck, L.D, Cundiff, L.V, Koohmaraie, M, Lunstra, D.D, Crouse, J.D
Format: Article
Language:English
Subjects:
BOEUF
BOVIN DE BOUCHERIE
BUEY
CALIDAD
CARNE DE RES
CORRELACION GENETICA
CORRELATION GENETIQUE
CRITERE DE SELECTION
CRITERIOS DE SELECCION
FENOTIPOS
FIBRAS MUSCULARES
FIBRE MUSCULAIRE
GANADO DE CARNE
GENISSE
HEREDABILIDAD
HERITABILITE
METHODE STATISTIQUE
METODOS ESTADISTICOS
NOVILLA
PHENOTYPE
QUALITE
RESISTANCE MECANIQUE
RESISTENCIA MECANICA
TAUREAU
TENDRETE
TERNURA
TORO
VALEUR GENETIQUE
VALOR GENETICO
VIANDE BOVINE
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Data were tenderness measures on steaks from 237 bulls (Group II) slaughtered after producing freezable semen and on 1,431 related steers and heifers (market animals, Group I) from Angus, Hereford, Pinzgauer, Brahman, and Sahiwal crosses from the Germ Plasm Evaluation project at the U.S. Meat Animal Research Center. Tenderness was assessed through Warner-Bratzler Shear Force (SF), taste panel tenderness (TPT), marbling score (MS), and myofibrillar fragmentation index (MFI). For all traits, as fraction Bos indicus inheritance increased, implied tenderness decreased. Heritability estimates were generally not significantly different from zero. Genetic correlations generally indicated favorable associations among the traits. The range in predicted breeding values of bulls for market animal tenderness was small and from -.34 to 0.32 kg for market animal shear force. Because of low estimates of heritability for SF or TPT, results from this experiment indicate the selection based on tenderness of steaks sampled from intact or late castrate males slaughtered following collection of freezable quality semen would not be very effective in improving average tenderness of steaks from steers or heifer progeny. If a mean of heritability estimates reported in the literature of 0.27 for shear value was assumed for market steer and heifer progeny instead of 0.02 as found in the present study then selection based on estimates of shear force in young bulls would be relatively more effective in improving shear force of market progeny
ISSN:0021-8812
1525-3163