Abstract
The present study aims to evaluate the effects of feeding palm oil by-products based diets on different muscle fatty acid profiles in goats. Thirty-two Cacang × Boer goats were randomly assigned to four dietary treatments: (1) control diet (CD), (2) 80% decanter cake diet (DCD), (3) 80% palm kernel cake diet (PKCD) and (4) CD plus 5% palm oil (PO) supplemented diet (CPOD). After 100 days of feeding, four goats from each group were slaughtered and longissimus dorsi (LD), infraspinatus (IS) and biceps femoris (BF) were sampled for analysis of fatty acids. Goats fed the PKCD had higher (P<0.05) concentration of lauric acid (C12:0) than those fed the other diets in all the muscles tested. Compared to the other diets, the concentrations of palmitic acid (C16:0) and stearic acid (C18:0) were lower (P<0.05) and that of linoleic acid (C18:2 n-6) was higher (P<0.05) in the muscles from goats fed the CD. It was concluded that palm kernel cake and decanter cake can be included in the diet of goats up to 80% with more beneficial than detrimental effects on the fatty acid profile of their meat.
Highlights
Goats are important meat-producing animals in the tropics [1,2] and the goat’s meat has been increasingly consumed around the world [3] especially in the developed countries, mainly because of its relatively low fat contents [4]
The concentration of C18:0 was higher (P
The treatments DCD and CPOD were almost similar in their fatty acid profiles and both were rich in C16:0 and C18:1, probably because both decanter cake (DC) and palm oil (PO) are generated from the mesocarp of the palm tree fruit
Summary
Goats are important meat-producing animals in the tropics [1,2] and the goat’s meat (chevon) has been increasingly consumed around the world [3] especially in the developed countries, mainly because of its relatively low fat contents [4]. It has been reported that human nutrition and health were affected by the content and composition of intramuscular fat [8]. Saturated fatty acids (SFA) are associated with coronary diseases [9] whereas poly-unsaturated fatty acids (PUFA) might have health benefits for consumers [10]. In ruminant muscle lipids, the proportion of saturated fatty acids (SFA) are often higher [11] and the poly-unsaturated fatty acids (PUFA)/SFA ratio lower, because dietary.
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