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- Title
薄荷提取物对热应激下断奶仔猪 生长性能、血清抗氧化能力及炎症因子的影响.
- Authors
费 枫; 刘 锐
- Abstract
The experiment was to study the mechanism of alleviating heat stress symptoms of weaned piglets with peppermint extract. A total of 240 weaned piglets were randomly divided into four groups, with six replicates in each group and ten pigs in each replicate. The pigs in blank control group (NC group) were fed with basal diet at the temperature of (25±1) ℃. The pigs in positive control group (AC group) were fed with basal diet at the temperature of (33±1) ℃. The pigs peppermint extract group was supplemented with 50 (T50 group) and 100 mg/kg (T100 group) peppermint extract were fed with basal diet at the temperature of (33±1) ℃. The experiment lasted for 30 d. The results showed that compared with AC group, final weight and average daily gain of pigs in T50 group and T100 group were significantly increased (P<0.05), while diarrhea rate and feed to gain ratio were significantly decreased (P<0.05). The activity of T-AOC, CAT, GSH-Px and SOD in serum of pigs in T50 group and T100 group were significantly higher than those in NC group (P<0.05). T100 group serum MDA concentration was significantly higher than that of NC group (P<0.05) and significantly lower than that of AC group (P<0.05). Serum IgG content of heat-stressed piglets showed an increasing trend with the addition level of peppermint extract, but no significant difference was found between NC group and T100 group (P>0.05). The content of TNF-α and IL-6 in serum in AC group were significantly higher than those in other groups (P<0.05). The expression level of NF-κB gene in longissimus dorsi muscle in NC group, T50 group and T100 group was significantly lower than that in AC group (P<0.05). The expression level of TNF-α gene in NC group was the lowest, and the highest in AC group, but the expression level of TNF- α gene was significantly decreased with the increase of dietary menthol extract supplemental level (P<0.05). HSP70 gene expression level in AC group and NC group was significantly lower than that in T50 group and T100 group (P<0.05), and HSP70 gene expression level in AC group was significantly lower than that in T100 group (P<0.05). The expression level of IL-6 gene in AC group was significantly higher than that in other groups (P<0.05). The study indicates that the optimal supplemental level of peppermint extract in piglets diet under heat stress is 100 mg/kg.
- Subjects
GENE expression; PIGLETS; MENTHOL; ERECTOR spinae muscles; PHYSIOLOGICAL effects of heat; INTERLEUKIN-6
- Publication
Feed Research, 2023, Vol 46, Issue 4, p25
- ISSN
1002-2813
- Publication type
Article
- DOI
10.13557/j.cnki.issn1002-2813.2023.04.006