Abstract

The Aceh cattle are local Indonesian beef cattle that are farmed in Aceh Province. This type of cattle is one of the sources of meat for the Aceh people. This study aims to analyze the quality of two primal cuts (longissimus lumborum and semitendinosus muscle) from Aceh cattle based on the muscle microstructure characteristics and MSTN gene expression. This study used a sample of longissimus lumborum and semitendinosus muscles from 18 adult male Aceh cattle with the age of 2–2.5 years and a BCS of 3.24. Muscle samples were obtained shortly after the cattle were slaughtered in slaughterhouses in Banda Aceh and Aceh Besar districts. Muscle microstructure analysis was performed using the HE, Masson's trichrome, and immunohistochemistry staining methods, while the MSTN gene expression analysis was performed using the qPCR method. The analysis of the physical quality of meat includes pH, meat color, fat color, cooking loss, water holding capacity, and WBSF value. The results showed that the area of LL muscle fibers was smaller than that of ST with relatively the same diameter. Both muscles were dominated by fast fibers with a percentage of 82.37% (LL muscle) and 91.80% (ST muscle). The area and composition of the type of muscle fibers are the main factors that influence the tenderness of Aceh beef. A higher distribution of collagen was found in ST muscles than in LL muscles. MSTN gene expression in both muscle types was relatively the same. Aceh cattle have large muscle fibers and are dominated by fast fibers with a high percentage, resulting in a low level of the tenderness of Aceh beef. However, the level of tenderness of Aceh beef is still in accordance with the cooking preparation of original and favorite cuisine of Aceh people.

Highlights

  • Academic Editor: Sumanta Nandi e Aceh cattle are local Indonesian beef cattle that are farmed in Aceh Province. is type of cattle is one of the sources of meat for the Aceh people. is study aims to analyze the quality of two primal cuts from Aceh cattle based on the muscle microstructure characteristics and myostatin gene (MSTN) gene expression. is study used a sample of longissimus lumborum and semitendinosus muscles from 18 adult male Aceh cattle with the age of 2–2.5 years and a body condition score (BCS) of 3.24

  • E Aceh cattle are local Indonesian beef cattle that are farmed in Aceh Province. is type of cattle is one of the sources of meat for the Aceh people. is study aims to analyze the quality of two primal cuts from Aceh cattle based on the muscle microstructure characteristics and MSTN gene expression. is study used a sample of longissimus lumborum and semitendinosus muscles from 18 adult male Aceh cattle with the age of 2–2.5 years and a BCS of 3.24

  • Other studies on Indonesian local beef cattle quality (Bali cattle and Ongole grade/PO cattle) showed the relationship between meat quality and muscle microstructure [22, 23]. These two studies have not examined the composition of muscle fiber type which is an important factor for meat quality. e composition of muscle fiber types can be engineered to produce more optimal meat production with preferred tenderness through genetic manipulation or breeding management modification. erefore, this study aims to analyze the quality of Aceh beef originating from smallholder farms based on muscle microstructure and MSTN gene expression. e results of this study can be used to improve the quality standards of Indonesian local beef and become a reference for government policymaking to improve the quality of beef in Indonesia

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Summary

Introduction

Academic Editor: Sumanta Nandi e Aceh cattle are local Indonesian beef cattle that are farmed in Aceh Province. is type of cattle is one of the sources of meat for the Aceh people. is study aims to analyze the quality of two primal cuts (longissimus lumborum and semitendinosus muscle) from Aceh cattle based on the muscle microstructure characteristics and MSTN gene expression. is study used a sample of longissimus lumborum and semitendinosus muscles from 18 adult male Aceh cattle with the age of 2–2.5 years and a BCS of 3.24. Is study aims to analyze the quality of two primal cuts (longissimus lumborum and semitendinosus muscle) from Aceh cattle based on the muscle microstructure characteristics and MSTN gene expression. Longissimus lumborum and semitendinosus muscle are two types of muscle constructing meat primal cuts preferred by the consumer in Aceh Province, Indonesia [9]. Previous studies have shown that the composition of muscle fiber type is one of the muscle growth characteristics variables which affects the quality of meat, especially concerning meat palatability, including affecting the taste (umami and richness) [12], meat color, pH, water binding capacity, tenderness, and nutritional value of meat [13,14,15], components of connective tissue and intramuscular fat [15, 16], and amino acid composition [17].

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