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Titolo:
AN EVALUATION OF THE USE OF ULTRASOUND SCANNING TO PREDICT CARCASS TRAITS IN STEERS GRAIN FED FOR THE JAPANESE MARKET
Autore:
BAUD S; WADE CM; GODDARD ME;
Indirizzi:
UNIV QUEENSLAND,SCH VET SCI,DIV FARM ANIM STUDIES ST LUCIA QLD 4072 AUSTRALIA UNIV QUEENSLAND,SCH VET SCI,DIV FARM ANIM STUDIES ST LUCIA QLD 4072 AUSTRALIA BAUD & ASSOCIATES PTY LTD MT TAYLOR VIC 3875 AUSTRALIA UNIV NEW ENGLAND,ANIM GENET & BREEDING UNIT ARMIDALE NSW 2351 AUSTRALIA
Titolo Testata:
Australian Journal of Agricultural Research
fascicolo: 1, volume: 49, anno: 1998,
pagine: 147 - 152
SICI:
0004-9409(1998)49:1<147:AEOTUO>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
LIVE ANIMAL MEASUREMENT; GENETIC-PARAMETERS; BEEF-CATTLE; HEREFORD BULLS; GROWTH;
Keywords:
BEEF CATTLE; LONGISSIMUS; FAT THICKNESS; SELECTION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
13
Recensione:
Indirizzi per estratti:
Citazione:
S. Baud et al., "AN EVALUATION OF THE USE OF ULTRASOUND SCANNING TO PREDICT CARCASS TRAITS IN STEERS GRAIN FED FOR THE JAPANESE MARKET", Australian Journal of Agricultural Research, 49(1), 1998, pp. 147-152

Abstract

The value of live-animal ultrasound scanning was assessed for steers grain-fed according to Japanese market specifications. Ultrasound scanning of the live animal for rump fat depth at the P8 site and for longissimus muscle area at feedlot entry did not accurately predict the ranking of individual steers on subcutaneous fat depth and longissimus muscle area measured on the carcass at slaughter. When scanning was performed at the time of feedlot exit, up to 9 months later, the prediction of post-slaughter subcutaneous fat depth using scanned measurementsmade at the P8 site was of higher precision. Ultrasonic scanning to determine longissimus muscle area on feedlot exit was no better as a predictor of carcass longissimus muscle area than was that scanned at feedlot entry. The low correlations were probably due to differences in the sites of the scan (12th/13th rib interface) and longissimus muscle-area measurement (10th/11th rib interface) and to measurement errors in both the ultrasonic scan and the direct carcass measurements. Ultrasonic scan measurements may have been affected by interference from deep fat cover on the steers. Genetic correlations were high but imprecisely estimated. Correlations between live-animal scanned measurements and the corresponding carcass measurements were high for steers from the same vendor property. Heritability estimates for the scanned measurements were in agreement with those from other studies.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/09/20 alle ore 17:13:36