竹酢粉对妊娠后期母羊血液及初乳抗氧化、免疫指标的影响

本试验旨在研究竹酢粉对妊娠后期母羊血液及其初乳抗氧化和免疫指标的影响。试验选择胎次一致、身体状况良好的妊娠后期（妊娠约120 d）湖羊10只,随机分成2组,分别饲喂基础日粮（对照组）和基础日粮+2%竹酢粉（试验组）,试验期3周（1周预饲期+2周正式试验期）,试验结束采集血液测定生化、免疫和抗氧化指标;分娩1周内采集初乳测定免疫和抗氧化指标。结果显示：①试验组母羊血液总蛋白（TP）含量和谷丙转氨酶（GPT）活性显著高于对照组（P<0.05）,谷草转氨酶/谷丙转氨酶（GOT/GPT）和血小板数量则显著低于对照组（P<0.05）,而红细胞数量、血红蛋白浓度均高于对照组母羊,但差异并不显著（P>0.05）;②与对照组相比,试验组母羊血清的免疫球蛋白A（IgA）、白细胞介素-6（IL-6）含量显著升高（P<0.05）,总抗氧化力（T-AOC）、免疫球蛋白G（IgG）和免疫球蛋白M（IgM）含量极显著升高（P<0.01）,肿瘤坏死因子-α（TNF-α）含量低于对照组但无显著差异（P>0.05）;③竹酢粉能够显著降低母羊初乳TNF-α的含量（P<0.05）,显著升高初乳超氧化物歧化酶（SOD）活性（P<0.05）,但对初乳免疫球蛋含量无显著影响（P>0.05）。本研究结果表明,日粮中添加竹酢粉能改善妊娠后期湖羊的健康状况,提高母羊的抗氧化和免疫性能。

Effects of Bamboo Vinegar Powder on the Antioxidant and Immune Indexes of Blood and Colostrums in Late-pregnant Ewe

To study the effects of bamboo vinegar powder on the antioxidant and immune indexes of blood and colostrums in late-pregnant Hu ewe, ten healthy late-pregnant primiparous Hu ewes at about 120 days were chosen and randomly divided into 2 groups with 5 ewes per group. The basic diet and the basic diet added with 2% of bamboo vinegar powder were fed to the ewes in control and experimental groups respectively, and the trial period were 3 weeks including 1 week of preparatory feeding and 2 weeks of formal trial period. The blood samples were collected and detected for the biochemical, immune and antioxidant indexes after finishing experiment. The colostrum was collected within a week after parturition and measured for immune and antioxidant indexes also. The results showed that:①Compared with the ewes in control group, the total protein (TP) content and glutamic-pyruvic transaminase (GPT) activity of blood in experimental ewes were significantly increased (P<0.05), while the glutamic oxalacetic transaminase (GOT)/GPT and platelet counts were significantly decreased (P<0.05), and the red blood cell counts and the hemoglobin concentration were increased with no significant difference (P>0.05);②Compared with the control group, the serum interleukin-6(IL-6) and immune globulin A(IgA) contents of ewes in experimental group were increased significantly (P<0.05), the total antioxidant capacity (T-AOC), immune globulin G(IgG) and immune globulin M(IgM) contents were extremely significantly increased (P<0.01), the tumour necrosis factor-α(TNF-α) content was decreased with no significant difference (P>0.05);③Bamboo vinegar powder significantly decreased the TNF-α content (P<0.05), increased the superoxide dismutase(SOD) activity (P<0.05) of colostrum, but the immunoglobulin content had no significant changes(P>0.05). In conclusion, diet supplemented with bamboo vinegar powder could improve the healthy and enhance the antioxidant and immune performance of late-pregnant Hu ewe.