The relationship of ultrasound measurements taken from two different anatomical regions to carcass traits and chemical composition of the carcass in Karayaka lambs
This study was undertaken to determine the relationship between carcass traits and chemical compositions. Using ultrasound scanning from two different anatomic regions, the study involved estimating carcass traits and chemical composition in male Karayaka lambs. Measurements were taken of skin thickness, subcutaneous fat thickness, muscle depth, muscle width, and muscle area between the 12th and 13th thoracic vertebrae (12- 3T) and 3rd and 4th lumbar vertebrae (3-4L) using real-time ultrasound in 15 six-month-old lambs. The lambs were slaughtered after the ultrasound measurements, and then their warm and cold carcass weights; dressing percentage; bone, meat, and fat amounts; and chemical composition in terms of crude protein, fat, dry matter, and ash ratios were determined. The subcutaneous fat thickness measured with ultrasound from both locations had a high correlation with live weight, warm and cold carcass weight, carcass bone (P < 0.01), and carcass meat (P < 0.05) weights. The adjusted R2 in the regression equation determined to estimate carcass traits using ultrasound yielded values of 50%-94% at 12-13T and 49%-83% at 3-4L (P < 0.05). As a result, it was determined that carcass traits were related to ultrasound measurements and that it is possible to predict carcass traits using live weight and ultrasonic skin thickness, muscle width, and muscle area.
___
- Morris ST. Economics of sheep production. Small Ruminant
Res 2009; 86: 59-62.
- Grill L, Ringdorfer F, Baumung R, Fuerst-Waltl B. Evaluation
of ultrasound scanning to predict carcass composition of
Austrian meat sheep. Small Ruminant Res 2015; 123: 260-268.
- Yılmaz O, Sezenler T, Alarslan E, Ata N, Karaca O, Cemal İ.
Ultrasound measurements of backfat thickness and
Musculus
longissmus dorsi thoracis et lumborum
(MLD) depth at the
weaning on Karacabey Merinos, Karya and Kıvırcık lambs.
Kafkas Univ Vet Fak 2014; 20: 829-834 (in Turkish with an
abstract in English).
- Akdag F, Teke B, Meral Y, Arslan S, Ugurlu M. Prediction
of carcass composition by ultrasonic measurement and the
effect of region and age on ultrasonic measurements. Small
Ruminant Res 2015; 133: 82-87.
- Leeds TD, Mousel MR, Notter DR, Zerby HN, Moffet CA,
Lewis GS. B-mode, real-time ultrasound for estimating carcass
measures in live sheep: Accuracy of ultrasound measures and
their relationships with carcass yield and value. J Anim Sci
2008; 86: 3203-3214.
- Ripoll G, Joy M, Alvarez-Rodriguez J, Sanz A, Teixeira A.
Estimation of light lamb carcass composition by in vivo real-
time ultrasonography at four anatomical locations. J Anim Sci
2009; 87: 1455-1463.
- Agamy R, Abdel-Moneim AY, Abd-Alla MS, Abdel-Mageed
II, Ashmawi GM. Use of ultrasound measurements to predict
carcass characteristics of Egyptian ram-lambs. Asian J Anim
Vet Adv 2015; 10: 203-214.
- Teixeira A, Matos S, Rodrigues S, Delfa R, Cadavez V. In
vivo estimation of lamb carcass composition by real-time
ultrasonography. Meat Sci 2006; 74: 289-295.
- Thériault M, Pomar C, Castonguay FW. Accuracy of real-
time ultrasound measurements of total tissue, fat, and muscle
depths at different measuring sites in lamb. J Anim Sci 2009;
87: 1801-1813.
- Ripoll G, Joy M, Sanz A. Estimation of carcass composition
by ultrasound measurements in 4 anatomical locations of 3
commercial categories of lamb. J Anim Sci 2010; 88: 3409-3418.
- Teke B, Akdag F. The effects of age of lamb and parity of
dam and sex and birth type of lamb on suckling behaviors of
Karayaka lambs. Small Ruminant Res 2012; 103: 176-181.
- Orman A, Caliskan GU, Dikmen S. The assessment of carcass
traits of Awassi lambs by real-time ultrasound at different body
weights and sexes. J Anim Sci 2010; 88: 3428-3438.
- Colomer-Rocher F, Morand-Fehr P, Kirton AH, Delfa R,
Sierra-Alfranca I. Métodos normalizados para el estudio de los
caracteres cuantitativos y cualitativos de las canales caprinas
y ovinas. Madrid, Spain: Ministerio de Agricultura, Pesca y
Alimentación; 1988 (in Spanish).
- Akçapınar H. Dağlıç, Akkaraman ve Kıvırcık kuzularının farklı
kesim ağırlıklarında besi performansı ve karkas özelliklerinin
karşılaştırılması. Ankara, Turkey: Ankara Üniversitesi
Veteriner Fakültesi; 1978.
- AOAC. Official Methods of Analysis. 19th ed. Arlington, VA,
USA: AOAC; 2012.
- Jacoby B. Regression III: Advanced Methods. East Lansing, MI,
USA: Michigan State University; 2005.
- Farebrother RW. The Durbin-Watson test for serial correlation
when there is no ıntercept in the regression. Econometrica
1980; 48: 1553-1563.
- Durbin J, Watson GS. Testing for serial correlation in least
squares regression, II. Biometrika 1951; 38: 159-179.
- Sen U, Sirin E, Ulutas Z, Kuran M. Fattening performance,
slaughter, carcass and meat quality traits of Karayaka lambs.
Trop Anim Health Prod 2011; 43: 409-416.
- Silva SR, Afonso JJ, Santos VA, Monteiro A, Guedes CM,
Azevedo JMT, Dias-da-Silva A. In vivo estimation of sheep
carcass composition using real-time ultrasound with two
probes of 5 and 7.5 MHz and image analysis. J Anim Sci 2006;
84: 3433-3439.
- Silva SR, Gomes MJ, Dias-da-Silva A, Gil LF, Azevedo
JMT. Estimation in vivo of the body and carcass chemical
composition of growing lambs by real-time ultrasonography. J
Anim Sci 2005; 83: 350-357.
- Romdhani SB, Djemali M. Estimation of sheep carcass traits by
ultrasound technology. Livest Sci 2006; 101: 294-299.
- Yılmaz O, Ocak S, Ogun S. Ultrasonic carcass assessment of
Dorper and Dorper x Merinos lambs using MLD and body
measurements. Turkish Journal of Agriculture - Food Science
and Technology 2016; 4: 395-400.
- Gökdal O, Ülker H, Karakuş F, Temur C, Handil H. Erkek
kuzularda karkas kompozisyonunun tahmininde ultrason
kullanımı: yaş ve genotip etkileri. In: 4. Ulusal Zootekni Bilim
Kongresi; Isparta, Turkey; 2004, pp. 1-11 (in Turkish).
- Hosseini Vardanjani SM, Miraei Ashtiani SR, Pakdel A, Moradi
Shahrebabak H. Accuracy of real-time ultrasonography in
assessing carcass traits in Torki-Ghashghaii sheep. J Agric Sci
Technol 2014; 16: 791-800.
- Silva SR, Afonso J, Guedes CM, Gomes MJ, Santos VA, Azevedo
JMT, Dias-da-Silva A. Ewe whole body composition predicted
in vivo by real-time ultrasonography and image analysis. Small
Ruminant Res 2016; 136: 173-178.
- Emenheiser JC, Greiner SP, Lewis RM, Noter DR. Validation of
live animal ultrasonic measurements of body composition in
market lambs. J Anim Sci 2010; 88: 2932-2939.
- Cemal I, Karaca O, Altin T, Gokdal O, Yilmaz M, Yilmaz
O. Ultrasound measurements of eye muscle properties and
backfat thickness in Kivircik lambs. J Biol Sci 2007; 7: 89-94.
- Kiyanzad MR. Using linear body measurements of live sheep to
predict carcass characteristics for two Iranian fat-tailed sheep
breeds. Asian Australas J Anim Sci 2004; 17: 693-699.
- Akçapınar H. Koyun Yetistiriciliği. 2nd ed. Ankara, Turkey:
Ismat Matbaacılık; 2000.
- Ramsey CB, Kirton AH, Hogg B, Dobbie JL. Ultrasonic needle
and carcass measurements for predicting chemical composition
of lamb carcasses. J Anim Sci 1991; 69: 3655-3664.