-
Effect of Feeding Methods on Fatty Acid Composition of Muscle and Adipose Tissue in Tan Sheep Lamb
- HUO Miao, LI Yanan, YANG Sirui, ZHU Xiangde, XU Xiaofeng, ZHANG Lili
-
2021, 48(6):
2020-2032.
doi:10.16431/j.cnki.1671-7236.2021.06.015
-
Abstract
(
238 )
PDF (1220KB)
(
99
)
-
References |
Related Articles |
Metrics
In order to explore the effect of feeding modes on fatty acid composition in muscle and adipose tissue of Tan sheep lambs,24 healthy 2-month-old Tan sheep lambs with similar weight (14.16 kg±0.58 kg) were randomly divided into house feeding group and grazing group.12 of each group were slaughtered at 4 months of age,and the longissimus dorsi muscle,biceps femoris,diaphragm,subcutaneous fat,perirenal fat and tail fat were collected for the determination of fatty acid contents by gas chromatograph.The results showed that:①In saturated fatty acids of muscle tissue,compared with the grazing group,the contents of C4∶0 and C16∶0 in biceps femoris of Tan sheep lambs in the house feeding group were significantly increased (P<0.05),and C8∶0,C12∶0,C14∶0 in the diaphragm content were significantly reduced (P<0.05).In unsaturated fatty acids of muscle tissue,compared with the grazing group,the contents of C16∶1,C20∶4n6 in longissimus dorsi muscle of Tan sheep lambs in the house feeding group were significantly reduced (P<0.05),C18∶3n6,C18∶3n3 content significantly increased (P<0.05),C20∶5n3,n-3 PUFA extremely significantly increased (P<0.01).Compared with the grazing group,the content of C20∶4n6 in biceps femoris of Tan sheep lambs in the house was significantly reduced (P<0.05),and the contents of C17∶1,C18∶3n3,C20∶5n3 and n-3 PUFA were extremely significantly increased (P<0.01).Compared with the grazing group,the content of C16∶1 in diaphragm muscle of the house feeding group was significantly reduced (P<0.05).② Among the saturated fatty acids in adipose tissue,compared with the grazing group,the contents of C11∶0 and C15∶0 in subcutaneous fat of the house feeding group were significantly reduced (P<0.05),and the content of C13∶0 was extremely significantly reduced (P<0.01).Compared with the grazing group,the contents of C10∶0 and C14∶0 in perinephric fat of Tan sheep lambs fed in the house were significantly reduced (P<0.05),and the contents of C4∶0 and C18∶0 were extremely significantly increased (P<0.01).Compared with the grazing group,the content of C11∶0 in tail fat of Tan sheep lambs fed in the shed significantly decreased (P<0.05).Among the unsaturated fatty acids in adipose tissue,the content of C18∶2n6t in the subcutaneous fat of Tan sheep lambs fed in the house was extremely significantly increased (P<0.01),and the contents of C14∶1,C16∶1 and C18∶3n6 were extremely significantly reduced (P<0.01).Compared with the grazing group,the contents of C18∶1n9t,C18∶3n3 and n-3 PUFA in perinephric fat of Tan sheep lambs fed in the house were significantly increased (P<0.05),and the content of C14∶1 was significantly decreased (P<0.05),the contents of C17∶1,C20∶2 and C18∶2n6t increased significantly (P<0.01).Compared with the grazing group,the contents of C14∶1 and C16∶1 in tail fat of Tan sheep lambs in the shed were significantly reduced (P<0.05),and the content of C18∶2n6t was extremely significantly increased (P<0.01).In conclusion,fatty acid contents in muscle and adipose tissue of Tan sheep lambs were affected by different feeding modes.The content of saturated fatty acid in biceps femoris muscle and unsaturated fatty acid in perirenal fat of Tan sheep lambs fed in the house were significantly higher than that of grazing Tan sheep lambs.