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Influence of vitamin E, tryptophan and β-glucan on growth performance, meat quality, intestinal immunity, and antioxidative status of yellow-feathered chickens fed thermally oxidized oils
Livestock Science ( IF 1.8 ) Pub Date : 2020-08-03 , DOI: 10.1016/j.livsci.2020.104188
Q. Fan , K.F.M. Abouelezz , Y. Wang , X. Lin , L. Li , Z. Gou , Z. Cheng , F. Ding , S. Jiang

Industrial oil wastes have been suggested as lower-cost alternative energy sources in place of refined oils for broiler chickens, but negative effects on performance and antioxidative status have been reported. This experiment was carried out to assess the influences of dietary inclusion of thermally oxidized soybean oil (OSO) with or without supplementation with vitamin E, tryptophan and β-glucan on growth performance, meat quality, plasma indices, jejunal antioxidative status, and jejunal gene expression of yellow-feathered male chickens aged 43 to 63 days. A total of 900 male Lingnan chickens at 43 days of age were randomly assigned to 6 treatments, each of which consisted of 6 floor pen replicates of 25 birds (n = 150/treatment): (1) A basal diet (BD) containing 3.5% fresh soybean oil (SO) (control); (2) BD containing 3.5% OSO replacing fresh oil (3.5%OD), (3) BD with 7% OSO (7%OD); (4) 7%OD + 100 mg vitamin E/kg (VE diet); (5) 7%OD + 0.02% tryptophan (tryptophan diet), and (6) 7%OD + 100 mg β-glucan/kg (β-glucan diet). The results showed that the growth traits and plasma variables (triglycerides, cholesterol, uric acid, creatine kinase, lactate dehydrogenase, reduced glutathione-GSH, oxidized glutathione-GSSG, malondialdehyde-MDA, and diamine oxidase-DAO) were not affected by the diet. The jejunal mucosal activity of alkaline phosphatase, inducible nitric oxide synthase, gamma-glutamine-cysteine synthetase, and glutathione S-transferase, or contents of GSH, GSSG and MDA were not affected by the treatments, but the activity of DAO of the control and β-glucan treatments were the highest (P < 0.05), followed by that of tryptophan treatment (P > 0.05), and those of 3.5%OD, VE diet, and 7%OD (P < 0.05). The expression of jejunal nuclear factor erythroid derived 2, peptide transporter 1, and zonula occludens 1 did not differ significantly (P > 0.05) among the treatments. There were no significant effects (P > 0.05) due to the diet on breast meat pH (45 min or 96 h post-mortem), shear force, intramuscular fat, drip loss (96 h), MDA, GSSG, meat a* and b* values (45 min), or meat a*, b*, and L* (96 h), but the L* value (45 min) of the β-glucan treatment was the highest (P < 0.05), followed by those of VE diet, tryptophan treatment, and 7%OD (P > 0.05) then 3.5%OD and the control (P < 0.05). Drip loss (24 h) in the breast muscle of the tryptophan treatment was the highest (P < 0.05), followed by that of β-glucan (P > 0.05), then 3.5%OD, VE diet, 7%OD, and the control (P < 0.05). The treatments did not affect (P > 0.05) intramuscular fat or drip loss (24 h) in the thigh muscle, but drip loss (96 h) of 3.5%OD was the highest (P < 0.05), followed by that of tryptophan treatment (P > 0.05), then 7%OD, VE diet, control, and β-glucan (P < 0.05). Collectively, up to 7% lightly oxidized soy oil can be incorporated successfully in the finisher diet of male Lingnan chickens (d 43 to 63 d) as a lower cost energy source in place of fresh SO. Additional supplementation with β-glucan, VE and tryptophan had no notable benefits.



中文翻译:

维生素E,色氨酸和β-葡聚糖对饲喂热氧化油的黄羽鸡生长性能,肉品质,肠道免疫力和抗氧化状态的影响

有人建议将工业废油作为低成本的替代能源,以代替肉鸡的精制油,但据报道对生产性能和抗氧化性有负面影响。进行该实验以评估饮食中添加或不添加维生素E,色氨酸和β-葡聚糖的热氧化大豆油(OSO)对生长性能,肉品质,血浆指标,空肠抗氧化状态和空肠基因的影响龄43至63天的黄羽雄鸡的表达 总共将900只43天大的岭南雄性鸡随机分配到6种处理中,每种处理由25只鸡的6层钢笔复制品组成(n = 150 /次处理):(1)含3.5%新鲜大豆油(SO)的基础饮食(BD)(对照);(2)含3.5%OSO的BD代替新鲜油(3.5%OD),(3)含7%OSO(7%OD)的BD;(4)7%OD + 100 mg维生素E / kg(VE饮食); (5)7%OD + 0.02%色氨酸(色氨酸饮食),以及(6)7%OD + 100 mgβ-葡聚糖/ kg(β-葡聚糖饮食)。结果表明,饮食对生长特性和血浆变量(甘油三酸酯,胆固醇,尿酸,肌酸激酶,乳酸脱氢酶,还原型谷胱甘肽-GSH,氧化型谷胱甘肽-GSSG,丙二醛-MDA和二胺氧化酶-DAO)没有影响。 。碱性磷酸酶,诱导型一氧化氮合酶,γ-谷氨酰胺-半胱氨酸合成酶和谷胱甘肽S-转移酶的空肠黏膜活性或GSH,GSSG和MDA的含量不受治疗的影响,(P <0.05),其次是色氨酸治疗(P > 0.05),以及3.5%OD,VE饮食和7%OD(P <0.05)。空肠核因子红系衍生蛋白2,肽转运蛋白1和小带闭合蛋白1的表达在治疗之间无显着差异(P > 0.05)。饮食对母乳的pH值(死后45分钟或96小时),剪切力,肌内脂肪,滴水损失(96小时),MDA,GSSG,肉a *和p没有显着影响(P > 0.05)。 b *值(45分钟)或肉类a *,b *和L *(96小时),但β-葡聚糖处理的L *值(​​45分钟)最高(P <0.05),其次是VE饮食,色氨酸治疗和7%OD(P> 0.05),然后是3.5%OD和对照组(P <0.05)。色氨酸治疗的乳房肌肉滴水损失(24小时)最高(P <0.05),其次是β-葡聚糖(P > 0.05),然后是3.5%OD,VE饮食,7%OD,以及对照(P <0.05)。治疗对大腿肌肉的肌内脂肪或滴注损失(24 h)没有影响(P > 0.05),但3.5%OD的滴注损失(96 h)最高(P <0.05),其次是色氨酸治疗(P > 0.05),然后是7%OD,VE饮食,对照和β-葡聚糖(P<0.05)。集体地,多达7%的轻度氧化大豆油可以作为低成本能源,成功地加入到雄性岭南鸡的肥育日粮中(d 43至63 d),代替新鲜的SO。补充β-葡聚糖,VE和色氨酸没有明显的好处。

更新日期:2020-08-03
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