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• Basic Research •     Next Articles

Effects of Allium mongolicum Regel and Its Extract on Deposition and Distribution of 4-Alkyl Branched-Chain Fatty Acids of Body Fat in Lambs

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  • Received:2020-02-17 Revised:2021-01-06 Online:2021-03-15 Published:2021-03-22

Abstract: The objective of this study was to determine the effects of Allium mongolicum Regel and its extract on deposition and distribution of 4-alkyl branched-chain fatty acids of body fat in lambs. Sixty 3-month-old, male, small-tailed Han sheep (average body weight, 23.67 ± 3.43 kg) were selected and randomly allocated into four groups in a randomized block design. Four feeding treatments were used: 1) a basal diet without supplementation as the control group; 2) the basal diet supplemented with 10 g?lamb-1?d-1 Allicum mongolicum Regel powder as the AMR group; 3) the basal diet supplemented with 3.4 g?lamb-1?d-1 Allicum mongolicum Regel water extract as the AWE group; and 4) the basal diet supplemented with 2.8 g?lamb-1?d-1 Allicum mongolicum Regel ethanol extract as the AFE group. The experiment lasted for 75 days, including a 15-day preliminary feeding period for adaptation and a 60-day experimental feeding period. At the end of the experiment, perirenal adipose tissue (PF) and dorsal subcutaneous adipose tissue (DF), tail adipose tissue (TF), and greater omental adipose tissue (GF) samples were collected to determine the contents of 4-alkyl branched-chain fatty acids. The results demonstrated that dietary supplementation with Allicum mongolicum Regel and its extracts decreased the concentrations of MOA in the DF (P < 0.0001), GF (P < 0.0001) and PF (P < 0.0001) compared to those in the DF, GF and PF of the CK, except for TF (P > 0.05). Dietary supplementation with Allicum mongolicum Regel and its extracts decreased the concentrations of EOA in the DF (P < 0.0001) and PF (P < 0.0001) compared to that in the PF of the CK. There was a tendency for lower (P = 0.062) EOA concentrations in the GF of AMR, AWE and AFE lambs than in the GF of CK lambs. Dietary supplementation with Allicum mongolicum Regel and its extracts decreased the concentrations of MNA in the PF (P = 0.044) compared to that in the PF of the CK. There was a tendency for lower (P = 0.066) MNA concentrations in the GF of AMR, AWE and AFE lambs than in the GF of CK lambs. The deposition of 4-alkyl branched-chain fatty acids in the body fat showed the order of TF > DF > GF > PF. The concentrations of MOA in the DF were closely related to the EOA concentrations ([ρ] = 0.61, P = 0.001). The concentrations of MOA in the PF were closely related to the EOA concentrations ([ρ] = 0.70, P = 0.001) and the MNA concentrations ([ρ] = 0.66, P = 0.001). Therefore, Allicum mongolicum Regel and its extracts have a positive effect on the reduction of characteristic flavor and odor of body fat in lambs, except for tail adipose tissue.

Key words: Allium Mongolicum Regel, extracts, body fat, 4-alkyl branched-chain fatty acids, characteristic flavor and odor

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