Effects of Ageratina adenophora on amino acid and fatty acid contents in the muscles of Jianchang black goats

This study aimed to examine the effects of Ageratina adenophora on amino acid and fatty acid contents in the muscles of Jianchang black goats. Jianchang black goats were fed with A. adenophora freely, and the contents of amino and fatty acids in their muscles were analyzed using an automatic amino acid analyzer and the chloroform-methanol extraction method, respectively. The contents of essential amino acids, non-essential amino acids, total essential amino acids, and flavor-related amino acids in the muscles of Jianchang black goats fed with A. adenophora decreased compared with the control group. At the same time the content of saturated fatty acid (SFA) decreased, while the content of monounsaturated fatty acid, polyunsaturated fatty acid, and unsaturated fatty acid (UFA) increased, and the UFA/SFA (U/S) ratio increased. The fatty acids that are proportional to the smell of mutton increased, and those that were inversely proportional to the smell of mutton decreased, indicating that A. adenophora reduced the nutritional value of amino acids and improved the nutritional value of fatty acids in meat, which had a certain effect on the flavor of meat. The results showed that A. adenophora fed ruminants had certain nutritional value, but the toxicity of A. adenophora changed muscle fatty acid and amino acid contents, which decreased the meat quality.