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91.
Wei‐Shan Lee Jih‐Jong Lee Albert Taiching Liao Chia‐Lien Kao Shang‐Lin Wang 《Veterinary and comparative oncology》2021,19(1):53-60
The majority of the known prognostic factors in dogs with lymphoma have been evaluated before treatment commences or at the time of diagnosis. Prognostic factors evaluated during the initial phase of treatment are less described but may provide important clinical information. In this retrospective study, 82 canine lymphoma patients were categorized according to the weight change between diagnosis and after 5 weeks of chemotherapy. Dogs that gained greater than 5% or lost greater than 5% of initial body weight were categorized as increased‐ or decreased‐weight groups, respectively. Those in which weight changed less than 5% were categorized as the maintained‐weight group. The median progression‐free survival (PFS) in the increased‐weight group, maintained‐weight group and decreased‐weight group was 226, 256 and 129 days, respectively. The decreased‐weight group had significantly shorter PFS than the increased and maintained groups (P = .023, P = .003, respectively). The median survival time (ST) in the increased‐weight group, maintained‐weight group and decreased‐weight group was 320, 339 and 222 days, respectively. There was no significant difference in ST among the three groups (P = .128). In Cox‐regression results, weight change group and initial body weight were significant risk factors associated to PFS (P = .007, P = .001, respectively) while only patient's initial body weight was a significant risk factor to ST (P = .013). In conclusion, evaluation of initial body weight and weight changes over time can provide valuable information regarding PFS and ST in dogs with multicentric lymphoma. 相似文献
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随着畜禽规模养殖的发展,高度集约化养殖模式将影响畜禽的健康状况、疫病防控和福利水平。一种无接触、无应激的射频识别(Radio Frequency Identifi cation,RFID)技术应运而生,该技术可以在无损状态下采集畜禽的行为、生理生化和养殖环境指标,从而为评估集约化养殖的效果和影响提供基础数据。文章讨论了三种常见类型的RFID系统在畜禽养殖中的应用,系统地比较了各类系统的优缺点及适宜应用场景,进一步提出RFID在畜禽养殖中的未来应用方向,以期为深化畜禽信息采集的研究提供参考。 相似文献
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【目的】探究准噶尔双峰驼哺乳期幼驼和成年母驼粪便菌群结构组成及多样性变化,为幼驼肠道健康发育提供重要依据。【方法】选取6~7岁体况相近的健康成年母驼12峰,以及出生日期相近(3月龄)的哺乳期母幼驼12峰,母驼与幼驼在相同饲养环境下饲养。采用直肠取粪法采集粪样,用于粪便内容物细菌16S rDNA的V3-V4区测序,并对测序数据进行相应分析。【结果】母驼粪便菌群Chao1和Shannon指数均显著高于幼驼(P<0.05);在门水平上,母驼和幼驼粪便中位于前十的菌均为厚壁菌门、拟杆菌门、疣微菌门、变形菌门、软壁菌门、螺旋体门、TM7、放线菌门、蓝藻菌门和纤维杆菌门,其中幼驼粪便中变形菌门和软壁菌门丰度均极显著高于母驼(P<0.01);在科水平上,母驼与幼驼粪便中位于前十的菌均为瘤胃球菌科、消化链球菌科、毛螺菌科、梭菌科、克里斯滕森菌科、理研菌科、疣微菌科、拟杆菌科、艰难杆菌科和普雷沃氏菌科,其中母驼粪便中消化链球菌科和梭菌科的丰度均极显著高于幼驼(P<0.01),而幼驼粪便中毛螺菌科的丰度极显著高于母驼(P<0.01);在属水平上,母驼与幼驼粪便中位于前十的菌属均为梭... 相似文献
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Effect of gut stress induced by oxidized wheat gluten on the growth performance,gut morphology and oxidative states of broilers 下载免费PDF全文
R. B. Liao H. J. Yan G. H. Liu S. Zhang W. H. Chang W. Liu C. H. Lin X. Y. Huang H. Y. Cai 《Journal of animal physiology and animal nutrition》2018,102(2):e849-e855
This study was to investigate the effect of oxidized wheat gluten (OG) on growth performance, gut morphology and its oxidative states of broilers. One hundred and eighty‐day‐old male broilers (10 chicks/pen) were randomly allocated into three dietary treatments: control diet (CON), diet with 8% wheat gluten (WG) and diet with 8% OG with six pens/treatment. Body weight (BW) (21 and 35 days) and average daily gain (ADG) (1–21 days and 22–35 days) decreased (p < .05) and feed conversion ratio (FCR) (1–21 days and 22–35 days) increased (p < .05) in OG treatment. Feed intake (FI) decreased (p < .05) in WG and OG treatments during 22–35 days. However, FI was not influenced by dietary treatments during 1–21 days (p > .05). The OG‐fed broilers had a lower faecal pH value (p < .05) and higher faecal moisture content (p < 05) at 14, 21, 28 and 35 days. Villus height, crypt depth and V/C value were not different (p > .05) among treatments at 21 and 35 days. Lipid peroxidation (LPO) (21 and 35 days) and malondialdehyde (MDA) (35 days) content in crop of OG treatment increased (p < .05). Oxidized glutathione (GSSG) (21 days), LPO (21 and 35 days) and MDA (21 and 35 days) content in ileum of OG treatment increased (p < .05). The reduced glutathione/oxidized glutathione (GSH/GSSG) (21 days) and (GSH) (35 days) in ileum of OG treatment decreased (p < .05). The present findings indicate that OG might be a stressor for broiler gut, which could induce oxidative stress both in crop and in ileum, and the diarrhoea as well. The growth performance of broiler was consequently depressed. 相似文献
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益生菌互作对肉鸡生长性能、肠道消化吸收及糖转运蛋白GLUT2影响的研究 总被引:1,自引:0,他引:1
旨在研究益生菌互作对肉鸡生长性能、肠道养分消化吸收及相关糖转运蛋白的影响。本研究中,200只1日龄雄性爱拔益加肉雏鸡被随机分为4组,每组5个重复,每个重复10只。将干酪乳杆菌、嗜酸乳杆菌和双歧杆菌分别按比例混合后于牛乳中发酵。对照组正常饮水(control组),益生菌Ⅰ组(混合比例为2:1:1)、Ⅱ组(混合比例为1:2:1)、Ⅲ组(混合比例为1:1:2)补充1%复合菌乳制品于饮用水中,各组皆饲喂基础日粮。整个试验饲养周期为42 d,每21 d为一个阶段。结果表明:1)与对照组相比,益生菌互作组均可显著提高肉鸡平均日增重(P<0.05),改善饲料利用率(P>0.05),在所有益生菌互作组中,益生菌Ⅰ组的肉鸡生长性能最好;2)益生菌互作显著刺激了空肠淀粉酶、脂肪酶、胰蛋白酶的特异性活性(P<0.05);3)益生菌互作组均显著提高了小肠绒毛高度(P<0.05),降低了隐窝深度(P<0.05),上调了GLUT2 mRNA的表达(P<0.05),其中,以益生菌Ⅰ、Ⅲ组作用最佳。综上所述,益生菌互作能够增强消化酶活性、改善消化道结构、上调营养转运蛋白表达,提高养分的消化率及能量吸收有效性,从而提高肉鸡的生产性能;且当干酪乳杆菌、嗜酸乳杆菌和双歧杆菌的混合配比为2:1:1时,复合益生菌制剂对肉鸡的作用效果较佳。 相似文献
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不同饲养制度和方式对银香鸡肉用性状的影响 总被引:1,自引:0,他引:1
用不同饲养方式和制度管理银香鸡。结果,在饲养期中的舍饲鸡的饲料报酬高;放出运动鸡的鸡肉味道较好。本研究三种制度中,以前期(1~45d)圈养、后期(46~100d)放出运动综合效果相对较好。 相似文献
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