Abstract #M457
Section: Small Ruminant
Session: Small Ruminant I
Format: Poster
Day/Time: Monday 7:30 AM–9:30 AM
Location: Gatlin Ballroom
Session: Small Ruminant I
Format: Poster
Day/Time: Monday 7:30 AM–9:30 AM
Location: Gatlin Ballroom
# M457
Fatty acid composition of different fat depots from meat goats supplemented with either tannin-rich pine bark and sericea lespedeza alone or in combination.
Christina R. Alfred1, Jung Hoon Lee*1, Travet Witherspoon2, Beruk B. Lemma1, Byeng R. Min3, Govind Kannan1, Brou Kouakou1, 1Fort Valley State University, Fort Valley, GA, 2Thomasville High School, Thomasville, GA, 3Tuskegee University, Tuskegee, AL.
Key Words: pine bark, sericea lespedeza, fatty acid profile of goat
Fatty acid composition of different fat depots from meat goats supplemented with either tannin-rich pine bark and sericea lespedeza alone or in combination.
Christina R. Alfred1, Jung Hoon Lee*1, Travet Witherspoon2, Beruk B. Lemma1, Byeng R. Min3, Govind Kannan1, Brou Kouakou1, 1Fort Valley State University, Fort Valley, GA, 2Thomasville High School, Thomasville, GA, 3Tuskegee University, Tuskegee, AL.
In vitro studies showed that dietary tannins inhibit the growth of microorganisms that are responsible for ruminal biohydrogenation of fatty acids. Both pine bark (PB) and sericea lespedeza (SL) contain high amounts of condensed tannins (CT). However, their effect on the fatty acid profile of different fat depots in meat goats has not been studied. This study was conducted to determine the fatty acid composition of different fat depots from meat goats fed CT-containing either PB and SL alone or in combination diets. Twenty-four crossbred (Kiko × Boer) goats (BW = 37.3 ± 2.56 kg) were randomly assigned to one of 4 diets: 30% bermudagass (BG) hay (control, BG-diet); 30% PB pellet (PB-diet); 30% SL pellet (SL-diet); and 15% PB + 15% SL pellet (PS-diet) with the remainder of each diet made up of 70% alfalfa pellets mixed with a commercial molasses-based sweet feed. After 50 d feeding, goats were harvested. Intramuscular, subcutaneous, and kidney fats were obtained from each carcass. Total lipids from each fat sample were extracted, and prepared for the fatty acid methyl esters (FAME). The FAME were analyzed by a gas chromatography. All data were analyzed as a completely randomized design. Compared with goats fed BG-diet, goats fed either PB- and SL-diet had a lower (P < 0.05) concentration of stearic (C18:0) acid (16.93 vs 14.93 or 15.01%) in intramuscular fat. Goats fed PB-diet had higher concentrations of linoleic (C18:2n-6; 5.55 vs 8.21%) and linolenic (C18:3n-3; 0.57 vs 0.91%) acids in intramuscular fat compared with goat fed BG-diet. In kidney fat, goats fed either PB- or SL-diet had a lower (P < 0.05) concentration of margaroleic (C17:1n-9) acid (0.45 vs 0.33 or 0.36%), but goats fed PB-diet had higher a concentration of C18:2n-6 (2.50 vs 5.48%) acid compared with goats fed BG-diet. Goats fed PS-diet had a higher concentration of C18:2n-6 acid (1.48 vs 2.75%) in subcutaneous fat compared with those fed BG-diet. The results indicated that goats fed PB might increase the deposition of C18 polyunsaturated fatty acids in fresh goat meats.
Key Words: pine bark, sericea lespedeza, fatty acid profile of goat
