Current Research in Nutrition and Food Science - An open access, peer reviewed international journal covering all aspects of Nutrition and Food Science

Dietary Indigofera zollingeriana Improves the Nutritional Quality of Kacang Goat Muscle by Enhancing Polyunsaturated Fatty Acid Composition

Malik Makmur¹ , Mardiati Zain^2* , Yetti Marlida² , Khasrad³ , Anuraga Jayanegara⁴ and Evy Arida⁵

¹Research Center for Animal Husbandry, National Research and Innovation Agency (BRIN), Cibinong, Bogor, Indonesia.

²Department of Animal Nutrition and Feed Technology, Faculty of Animal Science, University of Andalas, Padang, Indonesia.

³Department of Animal Production, Faculty of Animal Science, University of Andalas, Padang, Indonesia.

⁴Department of Nutrition and Feed Technology, IPB University, Bogor, Indonesia.

⁵Research Center for Applied Zoology, National Research and Innovation Agency (BRIN), Cibinong, Bogor, Indonesia.

Corresponding Author E-mail:mardiati@ansci.unand.ac.id

The tropical legume Indigofera zollingeriana may be utilized as a ruminant ration base to optimize intramuscular polyunsaturated fatty acid (PUFA) composition in Kacang goat. The objective of this research was to investigate how diets incorporating I. zollingeriana affect the fatty acid composition in the Supraspinatus (SS), Longissimus dorsi (LD), and Biceps femoris (BF) muscle tissue of Kacang goats. In this study, 16 male goats were prepared and arranged using a completely randomized design. The treatments were CON, IZ60, IZ75, and IZ90, containing 0%, 60%, 75%, and 90% I. zollingeriana, respectively. The goats were slaughtered after 84 days of rearing, and samples were collected from the SS, LD, and BF muscles. SS muscle had the highest PUFA content (37%), while the lowest thrombogenicity index (TI) and cholesterol of 0.68 and 55.38 g/100g respectively were found in the IZ90 treatment. In the LD muscle, the highest PUFA content (31.29%) and PUFA/SFA ratio (0.82) were found in the IZ75 treatment, while the TI value was 0.94. Moreover, in the BF muscle, the highest PUFA content (30.84%) was found in the IZ75 treatment with a fat content of 0.20%. The CON, IZ75, and IZ90 treatments resulted in similar fatty acid profiles in BF and LD muscles. The inclusion of I. zollingeriana in the diet of Kacang goats can effectively increase the levels of total PUFA in muscle tissue. These findings suggest that I. zollingeriana can serve as a valuable feed source to enhance the nutritional quality of goat meat by improving its fatty acid profile.

Biceps femoris; Cholesterol; Fat; Goat; Indigofera; total PUFA, Thrombogenicity index

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