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PRINT: ISSN 2221-1896
ONLINE : ISSN 2223-0343
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Using ultrasound for the estimation of
carcass characteristics in
crossbreed (Bos taurus
/ Bos indicus)
bulls
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Julio Cesar Vinay Vadillo1, Benjamín
Alfredo Piña Cárdenas1, Gwendolyne Peraza-Mercado2
and y Jorge Hernández Bautista3 |
1Campo Experimental La Posta. Instituto
Nacional de Investigaciones Forestales, Agrícolas y Pecuarias,
Km 22.5 Carretera Federal Veracruz- Córdoba.
Paso del Toro, Medellín .Veracruz. México CP. 94277;
2Universidad Autónoma de Ciudad Juárez,
Departamento de Ciencias Químico Biológicas. Av. Plutarco Elías Calles
No. 1210, FOVISSSTE Chamizal, Ciudad Juárez, Chihuahua, México, C.P.
31210; 3Escuela de Medicina Veterinaria y Zootecnia.
Universidad Autónoma Benito Juárez de Oaxaca. Av. Universidad s/n,
Ciudad Universitaria. Oaxaca, Oaxaca.
México. CP. 68120.
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Abstract |
The objective of this research was to
determine the
rib
eye area (REA)
and back fat thickness
(BFT) between the 12th and
13th rib, using
real-time ultrasound for
estimating the yield of total meat produced
(YTMP), total meat
produced (TMP), yield grade
(YG), adjusted yield grade
(AYG) and
commercial cuts (CC)
in a dual-purpose
grazing bulls in the tropic to
obtain an equation to
estimate the hot carcass
weight (HCW). Thirty-seven
crossbred
Holstein/Zebu (Ho/Z)
and Brown Swiss/Zebu
(BS/Z) bulls were subjected
to ultrasound images
prior to slaughter at the time when their
weight was between 300 and
500 kg. Mean
REA and
BFT were 76.02
cm2 and
3.6 mm respectively in
comparison to 77.38 cm2 (REA)
and 4.0 mm (BFT) in
the ultrasound. The
TMP estimated by ultrasound
scan did not differ between
genotypes and at different slaughter weights.
YTMP was better (P<0.05)
for animals over 450 kg.
The YG
value was close to
1.0 with 52-54%
of CC
without significant effect on
genetic group and
slaughter weight. AYG
values of 2 and
50-52% of
CC was obtained. With the
developed prediction
equation HCW (kg)
= -
338 + 2.48
carcass length
+2.30 carcass
width + 2.79 leg depth)
r2 =
0.92 and
the goodness of fit test was
assessed with
χ2 without
significant difference (P>0.05).
The results indicated that ultrasound image may
give an estimate of
rib eye area (UREA) and
back fat thickness (UBFT).
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Keywords:
Rib eye area; back
fat thickness; total meat produced; yield grade |
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To cite this article:
Julio Cesar Vinay Vadillo,
Benjamín Alfredo Piña Cárdenas, Gwendolyne Peraza-Mercado and Jorge
Hernández Bautista,
2014.
Using
ultrasound for the estimation of carcass characteristics in crossbreed (Bos
Taurus / Bos indicus) bulls.
Res.
Opin.
Anim. Vet. Sci., 4(12): 639-643. |
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