In vivo fat and muscle weight prediction for lambs from fat- and thin-tailed breeds by real-time ultrasonography

• Autorzy: Hajji H. , Atti N. , Hamouda M.B.
• Języki publikacji: EN

Abstrakty

EN

The aim of this study was to predict in vivo fat and muscle contents of lambs from a fat-tailed Barbarine and a thin-tailed Noire de Thibar (NT) breeds. The prediction was performed using body weight (BW), carcass weight (CW) and ultrasonic measurements. Ultrasonic measurements included subcutaneous fat thickness (FTh), longissimus dorsi muscle depth (MTh), muscle area (MAr) and circumference (MCir), taken on live animals and on carcasses using a real time ultrasound machine equipped with a 3.5 MHz linear probe. Dissected carcass muscle and fat tissues were weighted and then estimated by developing regression equations. BW was the most important estimator for carcass components for both types of breeds. For the fat-tailed breed, muscle content was better predicted by FTh and fat by MAr. The last with BW the latter explained 77 % of fat variation. For the thin-tailed breed BW and in vivo ultrasonic measurements explained 90 and 88 % of variation for fat and muscle contents, respectively. Rusing carcass ultrasonic measurements with CW mildly improved accuracy relative to BW and in vivo measurements.

• Wydawca: -
• Czasopismo: Animal Science Papers and Reports
• Rocznik: 2015
• Tom: 33
• Numer: 3
• Opis fizyczny: p.277-286,ref.

Twórcy

autor

Hajji H.

• INRA-Tunisie, Laboratoire de Productions Animales et Fourragcres, rue Hedi Karray, 2049 Ariana, Tunisia
• INAT-43 avenue Charles Nicoles, Tunis, Tunisia

autor

Atti N.

• INRA-Tunisie, Laboratoire de Productions Animales et Fourragcres, rue Hedi Karray, 2049 Ariana, Tunisia

autor

Hamouda M.B.

• Institution de la Recherche et de l’Enseignement Superieur Agricoles, 30 Rue Alain Savary, 1002 Tunis-Belvedcre, Tunisia

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