Figure 1.
A) Damara, Dorper and Australian Merino rams at the initial stages of the feeding trial. Notice the characteristic hanging fat tail of the ram up front. B) Several aspects of the fat tail in several of the Damara rams used in this trial. C) In the first plane, brown Damara ram.
Table 1.
Effect of feed restriction on the growth and fat tail in Damara ram lambs.
Table 2.
Effect of feed restriction in the fatty acid composition (% of total fatty acids) of the fat tail in Damara ram lambs.
Figure 2.
Partial gas-liquid chromatogram of the branched chain fatty acid region of the fat tail in Damara Ram lambs.
Peak identification: 1) 10:0; 2) 10:0-4Me and 10:0–6Me; 3) 11:0; 4) 11:0–4Me; 5) 11:0–4,8Me; 6) 12:0; 7) 12:0–4Me; 8) 12:0–8Me; 9) 12:0–4,8Me; 10) 13:0; 11) 13:0–6Me; 12) 13:0–4Me; 13) i–14:0; 14) 13:0–4,8Me; 15) 14:0–2Me; 16) 14:0; 17) 14:0–6Me; 18) 14:0–8Me; 19) 14:0–4Me; 20) 14:0–10Me; 21) i-15:0; 22) 14:0–2,6Me; 23) a-15:0; 24) 14:1cis-9; 25) 15:0; 26) 15:0–8Me; 27) 15:0–4Me; 28) i-16:0; 29) 16:0–2Me; 30) 16:0; 31) 16:0–6Me; 32) 16:0–8Me; 33) 16:0–4Me; 34) 16:0–12Me; 35) i-17:0; 36) 16:1cis-7; 37) 16:1cis-9 and a-17:0; 38) 17:0; 39) 17:0–12Me; 40) i-18:0; 41) 17:1cis-9. Abbreviations: BTH, Butylated hydroxytoluene; Me, methyl; i, iso; a, anteiso.
Figure 3.
Electron impact mass spectra of the: A) 16:0–4Me; B) 16:0–6Me; C) 16:0–8Me; and D) 12:0–4,8Me branched chain fatty acids in the fat tail of Damara Ram lambs.
Table 3.
Effect of feed restriction in total fatty acid (mg/g DM) and dimethylacetal and fatty acid composition (% of total products) of the gastrocnemius muscle in Damara ram lambs.
Figure 4.
Partial gas-liquid chromatograms of the branched chain fatty acid region of gastrocnemius muscle samples of Damara, Merino and Dorper Ram lambs, before and after hydrogenation of the unsaturated fatty acids.
Peak identification: 1) 16:0; 2) 16:0–6Me; 3) 16:0–8Me; 4) DMA-17:0; 5) 16:0–4Me; 6) 16:0–12Me; 7) i-17:0; 8) 16:1cis-7; 9) 16:1cis-9; 10) a-17:0; 11) 17:0.