Abstract
This research aimed to estimate carcass quality of Pasundan cattle using ultrasound imaging based on Body Condition Score (BCS). Total 31 head of female cattle with age ranging from 4 to 7 years from Regional Technical Implementation Unit of the Center for Artificial Insemination and Artificial Insemination for Beef Cattle Development at Ciamis West Java, Indonesia with BCS ranging from 1.0-4.0. The marbling score, intramuscular fat (IMF), backfat thickness (LP), and thickness musculus of m. longissimus dorsi (LD), m. psoas major (PM), m. psoas minor (PMN), m. gluteus medius (GM) and m. biceps femoris (BF) were scanned using ultrasound on 3 different locations, i.e. on 12<sup>th</sup>-13<sup>th</sup> ribs (thorax), lumbar 4<sup>th </sup>- 5<sup>th </sup>(lumbar), and between tuber coxae and tuber ischii (gluteal) with 5 MHz frequency of convex transducer. The results showed that BCS increased when LP, marbling score and IMF from m. LD, m. PM, m. PMN, and m. GM was rising. Pasundan cattle showed marbling scores ranging from score 1 to 5 and percentage IMF ranging from 2.62% to 4.82%. Body Condition Score affected carcass quality of Pasundan cattle on parameters such as musculus thickness, marbling score, and intramuscular fat (IMF) from ultrasound imaging of m. LD, m. PM. m. PMN, m. GM, and m. BF.
Highlights
Pasundan cattle are the result of adaptation and crossing of more than ten generations of Balinese cows with Ongole crossbreeds, Sumba Ongole, and Madura cows (Kementerian Pertanian 2014)
Pasundan cattle are known as the genetic resources of local livestock belonging to West Java based on the Decree of the Minister of Agriculture No: 1051/Kpts/SR.120/10/2014 at 13 October 2014 concerning the determination of the Pasundan cattle breed
Factors taken into account in assessing meat and carcass quality in cattle according to US Department of Agriculture (USDA) standards include carcass weight, carcass length, backfat
Summary
Pasundan cattle are the result of adaptation and crossing of more than ten generations of Balinese cows with Ongole crossbreeds, Sumba Ongole, and Madura cows (Kementerian Pertanian 2014). Ultrasound imaging has been used since 1960 to measure muscle fat thickness in beef cattle which is a parameter in the Quality Beef Contest at the International Livestock Exposition (Stouffer 2004). Ultrasound imaging can be used to determine meat and fat characteristics in live animals, intramuscular fat percentage and marbling score (Gupta et al 2013). The characteristics of the carcass and the quantity and quality of meat can be evaluated periodically, routinely, and more accurately by using ultrasound (Bugiwati et al 2000). Ultrasound imaging is non-distracting to livestock, is relatively inexpensive, and is a useful method for evaluating the condition of subcutaneous muscle and adipose tissue (Stouffer 2004)
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