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首页> 外文期刊>Journal of animal science >Effects of anthocyanin-rich purple corn (Zea mays L.) stover silage on nutrient utilization, rumen fermentation, plasma antioxidant capacity, and mammary gland gene expression in dairy goats
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Effects of anthocyanin-rich purple corn (Zea mays L.) stover silage on nutrient utilization, rumen fermentation, plasma antioxidant capacity, and mammary gland gene expression in dairy goats

机译：富含花青素的紫色玉米（Zea mays L.）秸秆青贮饲料对奶山羊营养利用，瘤胃发酵，血浆抗氧化能力和乳腺基因表达的影响

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Eight healthy multiparous Saanen dairy goats (41.50 ± 1.84 kg) were assigned to a double 4 × 4 Latin square design. The four treatment diets were: (i) negative control, rice straw (NC); (ii) first positive control, sticky corn stover silage (PC1); (iii) second positive control, PC1 with 1 g/d commercial purple corn pigment (PC2); and (iv) anthocyanin-rich purple corn stover silage (PSS; AR). DMI did not differ (P 0.05) among the treatments. Goats receiving the NC tended (P 0.05) to reduce nutrient apparent digestibility, nitrogen (N) absorption, N retention, and volatile fatty acid production relative to the other groups. The levels of 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging activity and superoxide dismutase (SOD) in plasma were greater (P 0.05) in goats fed PC2 and AR compared with NC and PC1. The inclusion of PC2 and AR increased (P 0.05) the abundance of nuclear factor (erythroid-derived 2)-like 2 (NFE2L2), but decreased (P 0.05) the level of tumor necrosis factor in the mammary gland. Moreover, goats receiving AR tended to increase (P 0.05) the levels of SOD2, GPX1, and GPX2 mRNA expression in the mammary gland. There were significant (P 0.05) positive correlations between DPPH scavenging activity, total antioxidant capacity, SOD, catalase enzymes in plasma, and the abundance of NFE2L2 in the mammary gland. In addition, stronger (P 0.05) positive correlations were noted between the expression of several inflammation related and antioxidant genes. Collectively, the results from the current study indicated that the consumption of anthocyanin-rich PSS by dairy goats had the potential to enhance antioxidant potential by improving antioxidant capacity in plasma and by modulating the abundance of several inflammation related and antioxidant genes in the mammary gland.
机译：将八只健康的多头Saanen奶山羊（41.50±1.84公斤）分配给4×4双重拉丁方形设计。四种治疗饮食为：（i）阴性对照，稻草（NC）; （ii）第一个阳性对照，粘性玉米秸秆青贮饲料（PC1）; （iii）第二个阳性对照，PC1，含1 g / d商业紫色玉米色素（PC2）; （iv）富含花青素的紫色玉米秸秆青贮饲料（PSS; AR）。治疗之间的DMI没有差异（P> 0.05）。相对于其他组，接受NC处理的山羊趋于（P <0.05）降低营养物质的表观消化率，氮（N）吸收，氮保留和挥发性脂肪酸的产生。与NC和PC1相比，饲喂PC2和AR的山羊血浆中2,2-二苯基-1-吡啶并肼基（DPPH）清除活性和超氧化物歧化酶（SOD）含量更高（P <0.05）。包含PC2和AR可增加（P <0.05）核因子（类胡萝卜素2）-样2（NFE2L2）的丰度，但降低（P <0.05）乳腺中肿瘤坏死因子的水平。此外，接受AR的山羊倾向于增加（P <0.05）乳腺中SOD2，GPX1和GPX2 mRNA的表达水平。血浆中DPPH清除活性，总抗氧化能力，SOD，过氧化氢酶和乳腺中NFE2L2的含量之间存在显着的正相关（P <0.05）。此外，在一些炎症相关基因和抗氧化剂基因的表达之间发现了更强的（P <0.05）正相关。总体而言，当前研究的结果表明，奶山羊食用富含花青素的PSS可以通过提高血浆中的抗氧化能力以及调节乳腺中几种炎症相关和抗氧化基因的丰度来增强抗氧化能力。

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