Blood parameters

血液参数
  • 文章类型: Journal Article
    血液学和生化参数的正常参考间隔(RI)对于评估和监测圈养和自由生活的chelonians的健康状况很重要;但是,大多数野生动物物种都没有这样的信息。加拉帕戈斯巨龟是地球上最具标志性的动物之一,健康信息可以为它们的保护和管理做出重要贡献。这项研究提供了血液学和血浆生物化学参数的正式RI,并描述了自由生活的东部圣克鲁斯(Chelonoidisdonfaustoi)的细胞形态以及形态计量学,西班牙(Chelonoidishoodensis)和圣克里斯托乌龟(Chelonoidischathamensis)。我们探索了男女之间血液参数的差异,在这项研究中,乌龟物种以及先前发表的西方圣克鲁斯乌龟(Chelonoidisporteri)的RI。与Española和SanCristobal陆龟相比,圣克鲁斯两种物种的生物化学参数总体上更相似。这项研究构成了这三种加拉帕戈斯乌龟的第一个RI,可能对建议圈养繁殖和保护计划具有价值。我们建议进一步研究以在其他乌龟物种中建立RI,以便我们可以更好地理解和解释血液学和生物化学参数,作为这种极度濒危分类群物种的宝贵保护工具。
    Normal reference intervals (RI) of hematologic and biochemical parameters are important for assessing and monitoring the health status of captive and free-living chelonians; however, such information is not available for most wildlife species. Giant Galapagos tortoises are one of the most iconic animals on earth and health information can make an important contribution to their conservation and management. This study provides formal RI of haematology and plasma biochemistry parameters and describes cell morphology along with morphometrics of free-living Eastern Santa Cruz (Chelonoidis donfaustoi), Española (Chelonoidis hoodensis) and San Cristóbal tortoises (Chelonoidis chathamensis). We explored differences in blood parameters between sexes, across the tortoise species in this study and with previously published RI of the Western Santa Cruz tortoise (Chelonoidis porteri). Biochemistry parameters of both Santa Cruz species were overall more similar to each other than to Española and San Cristobal tortoises. This research constitutes the first RI for these three Galapagos tortoise species and may be of value for advising captive-breeding and conservation plans. We recommend further research to establish RI in additional tortoise species so we may better understand and interpret haematology and biochemistry parameters as a valuable conservation tool for species of this critically endangered taxon.
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  • 文章类型: Journal Article
    轮班工作在现代社会中变得越来越普遍。轮班工作与一系列负面健康结果有关。因此,这项为期10年的回顾性队列研究,旨在探讨轮班工作与血液和代谢参数之间的关系。这项回顾性队列研究于2023年在金属零件制造行业进行。在这项研究中,对204名轮班工人和204名日间工人进行了检查。所有研究的血液和代谢参数都是通过回顾10年(2013-2022年)期间所有参与者的医疗记录来收集的。此外,身体的数量,化学,和工效学有害物质在工作环境中进行了调查。使用SPSS版本25.0对收集的所有数据进行分析。身体质量指数(BMI)的值,红细胞计数(RBC),血小板计数(PLT),促甲状腺激素水平(TSH),空腹血糖水平(FBS),肌酐,甘油三酯(TG),肝酶水平(SGOT和SGPT),轮班工作员工的收缩压(SBP)较高,两组之间的这些参数值之间存在显着差异。logistic回归结果表明,轮班对FBS参数的影响最大,TG,SGPT,TSH,身体活动,BMI,睡眠时间,PLT,和睡眠质量的β系数值为0.49、0.33、0.29、0.29、0.20、0.18、0.14、0.13和,分别为0.11(p值<0.01)。本研究有助于越来越多的证据表明血液和代谢因素可能受到轮班工作的影响。这些发现对政策制定者具有重要意义,强调需要采取干预措施来减轻轮班工作对工人的负面健康影响。
    Shift work has become increasingly common in modern society. Shift work has been associated with a range of negative health outcomes. Therefore, this 10-years retrospective cohort study, aimed to investigate the relationship between shift work and blood and metabolic parameters. This retrospective cohort study was conducted in a metal parts manufacturing industry in 2023. In this study, 204 shift workers and 204 day workers were examined. All the studied blood and metabolic parameters were collected by reviewing the medical records of all participants during a 10-years period (2013-2022). Moreover, the amounts of physical, chemical, and ergonomics harmful agents in the work environment were investigated. All the collected data were analyzed using SPSS version 25.0. The values of Body Mass Index (BMI), Red Blood Cell Count (RBC), Platelets Count (PLT), Thyroid-Stimulating Hormone Level (TSH), Fasting Blood Sugar Level (FBS), Creatinine, Triglyceride (TG), Liver Enzymes level (SGOT and SGPT), and Systolic Blood Pressure (SBP) were higher among the shift work employees, and a significant difference was observed between the values of these parameters between the two groups. The results of logistic regression showed that the highest effect of shift work was observed on the parameters of FBS, TG, SGPT, TSH, Physical activity, BMI, Sleep duration, PLT, and Sleep quality with beta coefficient values of 0.49, 0.33, 0.29, 0.29, 0.20, 0.18, 0.14, 0.13 and, 0.11, respectively (p-value < 0.01). The present study contributes to a growing body of evidence that blood and metabolic factors are likely to be influenced by shift work. These findings have important implications for policy makers, highlighting the need for interventions to mitigate the negative health effects of shift work on workers.
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  • 文章类型: Journal Article
    本研究旨在确定年龄对牛遗传核中粪便微生物群的影响,关注微生物的丰富程度,composition,功能多样性,以及与血液参数的相关性。使用16SrRNA基因测序分析来自21头牛的粪便和血液样品。年龄较大的牛表现出更大的细菌多样性和丰度,α多样性指数发生显著变化(p<0.05)。β多样性分析显示,各年龄组之间的微生物组成存在显着差异,年龄和性别的相互作用(p<0.05)。阿尔法多样性之间的相关性,社区组成,和血液学值强调了微生物群对牛健康的影响。有益的产生丁酸的细菌,比如Ruminococaceae,在老牛中更丰富,暗示在肠道健康中的作用。功能多样性分析表明,幼牛在发酵和厌氧化学异养中具有更丰富的代谢途径。这些研究结果表明,管理策略包括定制的益生菌疗法,饮食调整,和有针对性的健康监测,以提高牲畜健康和性能。进一步的研究应包括全面的代谢分析,以更好地将微生物群变化与年龄相关的变化联系起来。加强对微生物群之间复杂相互作用的理解,年龄,和生殖状况。
    This study aimed to determine the impact of age on the fecal microbiota in the genetic nucleus of cattle, with a focus on microbial richness, composition, functional diversity, and correlations with blood parameters. Fecal and blood samples from 21 cattle were analyzed using 16S rRNA gene sequencing. Older cattle exhibited greater bacterial diversity and abundance, with significant changes in alpha diversity indices (p < 0.05). Beta diversity analysis revealed significant variations in microbial composition between age groups and the interaction of age and sex (p < 0.05). Correlations between alpha diversity, community composition, and hematological values highlighted the influence of microbiota on bovine health. Beneficial butyrate-producing bacteria, such as Ruminococcaceae, were more abundant in older cattle, suggesting a role in gut health. Functional diversity analysis indicated that younger cattle had significantly more abundant metabolic pathways in fermentation and anaerobic chemoheterotrophy. These findings suggest management strategies including tailored probiotic therapies, dietary adjustments, and targeted health monitoring to enhance livestock health and performance. Further research should include comprehensive metabolic analyses to better correlate microbiota changes with age-related variations, enhancing understanding of the complex interactions between microbiota, age, and reproductive status.
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  • 文章类型: Journal Article
    Sainfoin种(Onobrychisspp。)已经被用作反刍动物的基本饲料几个世纪了,放牧和干草。还研究了由sainfoin产生的种子作为动物饲料来源,并表明它是单胃动物的特别富含蛋白质的补充剂。本研究探讨了与对照饮食相比,大鼠饮食中两种sainfoin种子包含率的影响,侧重于血液生化参数和多器官系统的综合组织病理学评估。因此,我们提供了一个新的贡献,为研究三苯膦种子作为单胃动物饮食中的蛋白质补充剂的证据。在这个21天的实验中,每组7只大鼠被分配到对照组,一个5%的种子组,和10%的三苯膦种子组。对照组接受标准饲料和水;第二组接受含有5%皂素种子的饲料;第三组接受含有10%皂素种子的饲料。在实验结束时,进行尸检和评估。组织病理学检查显示所有21个样本的器官结构正常,不管是哪个群体。血液分析显示肌酸有统计学意义的下降,ALT,P,Ca,与对照组相比,三苯磷种子组中的Mg水平,大多数值接近参考水平,暗示潜在的好处。值得注意的是,当大鼠饲料中含有5%和10%的种子时,没有观察到不良反应。这些发现有助于越来越多的研究,调查在单胃动物饮食中包含三苯膦种子,这是评估Sainfoin作为一种新型豆类作物用于人类消费的潜力的基础组成部分。
    Sainfoin species (Onobrychis spp.) have been employed for centuries as an essential forage for ruminant animals, both for grazing and as hay. The seeds produced by sainfoin have also been investigated as an animal feed source and were indicated to be a particularly protein-rich supplement for monogastric animals. This study explores the effects of two sainfoin seed inclusion rates in rat diets compared to a control diet, focusing on blood biochemical parameters and a comprehensive histopathological evaluation of multiple organ systems. Thus, we provide a novel contribution to the body of evidence investigating sainfoin seeds as a protein supplement in monogastric animal diets. In this 21-day experiment, seven rats each were assigned to the control group, a 5% sainfoin seed group, and a 10% sainfoin seed group. The control group received standard feed and water; the second group received feed with 5% sainfoin seeds; and the third group received feed with 10% sainfoin seeds. At the experiment\'s end, necropsies and evaluations were conducted. Histopathological exams revealed normal organ structures in all 21 samples, regardless of the group. Blood analysis showed statistically significant decreases in creatine, ALT, P, Ca, and Mg levels in the sainfoin seed groups compared to the control group, with most values nearing reference levels, suggesting potential benefits. Notably, no adverse effects were observed when sainfoin seeds were included at 5% and 10% in the rat feed. These findings contribute to a growing body of research investigating the inclusion of sainfoin seeds in monogastric animal diets, which is a foundational component of assessing sainfoin\'s potential as a novel pulse crop for human consumption.
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  • 文章类型: Journal Article
    本回顾性研究旨在探讨血液参数在预测膝下截肢(BKA)患者死亡率中的价值。本研究共纳入178例BKA患者。将患者分为两组,即退出组(n=136;76.4%)和幸存者组(n=42;23.6%)。将退出组的患者进一步分为三个亚组:i)在<1个月内经历死亡率的患者(n=55;40.4%);ii)在1-12个月内经历死亡率的患者(n=48;35.3%);iii)在手术后>12个月内经历死亡率的患者(n=33;24.3%)。二元逻辑回归和广义线性模型用于关系分析,和受试者操作员特征曲线用于诊断测试。发现年龄参数(B=0.061;P=0.01),嗜酸性粒细胞与淋巴细胞比率(ELR)(B=-2.861;P<0.05),C反应蛋白(CRP)/白蛋白比值(B=0.027;P<0.01)和平均血小板体积(MPV)/淋巴细胞比值(B=0.310;P<0.01)对多变量死亡率有显著影响。此外,回归系数表明,年龄的影响,CRP/白蛋白和MPV/淋巴细胞比值对死亡率呈阳性,而ELR的作用是负面的。年龄的死亡率预测值[曲线下面积(AUC)=0.681;P=0.01],ELR(AUC=0.630;P=0.01),CRP/白蛋白比值(AUC=0.746;P=0.01)和MPV/淋巴细胞比值(AUC=0.676;P<0.01)也有统计学意义。对于27.51CRP/白蛋白临界值,灵敏度为80.1%,而特异性为54.8%。对于36.93CRP/白蛋白截止值,灵敏度为71.3%,特异性为73.8%。此外,发现MPV(B=-0.37;P<0.01)和血红蛋白/红细胞分布宽度(RDW)比(B=5.20;P<0.01)对多变量水平的死亡时间有显着影响。MPV(AUC=0.648;P<0.01)和血红蛋白/RDW(AUC=0.673;P=0.01)参数对死亡时间具有预测价值。MPV的预测值为64.8%,而血红蛋白/RDW比率为67.3%。对于血红蛋白/RDW的0.54截止值,灵敏度为74.5%,特异性为11.1%。相比之下,对于血红蛋白/RDW比率的0.84截止值,敏感性为10.9%,特异性为81.5%.总之,CRP/白蛋白比值被确定为显著的死亡率参数,而血红蛋白/RDW比值是一个重要的死亡时间预测因子,根据目前的分析结果。这些结果可以指导临床实践和进一步研究预测BKA患者的死亡率。
    The present retrospective study aimed to investigate the value of blood parameters in predicting mortality in patients with below-knee amputation (BKA). A total of 178 patients with BKA were included in the present study. The patients were divided into two groups, namely the exitus group (n=136; 76.4%) and the survivors group (n=42; 23.6%). Patients in the exitus group were further divided into three subgroups: i) Those who experienced mortality in <1 month (n=55; 40.4%); ii) those who experienced mortality between 1-12 months (n=48; 35.3%); and iii) those who experienced mortality in >12 months after surgery (n=33; 24.3%). Binary logistic regression and a generalized linear model were used for relational analysis, and a receiver operator characteristic curve was used for diagnostic tests. It was found that the parameters of age (B=0.061; P=0.01), eosinophil-to-lymphocyte ratio (ELR) (B=-2.861; P<0.05), C-reactive protein (CRP)/albumin ratio (B=0.027; P<0.01) and mean platelet volume (MPV)/lymphocyte ratio (B=0.310; P<0.01) had a significant effect on mortality at the multivariate level. Moreover, regression coefficients showed that the effect of age, CRP/albumin and MPV/lymphocyte ratios on mortality were positive, whereas the effect of the ELR was negative. The mortality predictive values of age [area under the curve (AUC)=0.681; P=0.01], ELR (AUC=0.630; P=0.01), CRP/albumin ratio (AUC=0.746; P=0.01) and MPV/lymphocyte ratio (AUC=0.676; P<0.01) were also found to be statistically significant. For the 27.51 CRP/albumin cut-off value, the sensitivity was found to be 80.1%, whereas the specificity was 54.8%. For the 36.93 CRP/albumin cut-off value, the sensitivity was 71.3%, and the specificity was 73.8%. Furthermore, MPV (B=-0.37; P<0.01) and hemoglobin/red-blood-cell distribution width (RDW) ratio (B=5.20; P<0.01) were found to have a significant effect on the time to death at the multivariate level. The parameters MPV (AUC=0.648; P<0.01) and hemoglobin/RDW (AUC=0.673; P=0.01) had predictive value in terms of the time to death. The predictive value for MPV was found to be 64.8%, whereas that for the hemoglobin/RDW ratio was 67.3%. For the 0.54 cut-off value for hemoglobin/RDW, the sensitivity was 74.5%, and the specificity was 11.1%. By contrast, for the 0.84 cut-off value for the hemoglobin/RDW ratio, the sensitivity was 10.9% and the specificity was 81.5%. In conclusion, the CRP/albumin ratio was identified as a significant mortality parameter, whereas the hemoglobin/RDW ratio was a significant time to death predictor, according to the results of the present analysis. These results may guide clinical practices and further research in terms of predicting mortality in patients with BKA.
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  • 文章类型: Journal Article
    这项研究调查了三氯半乳蔗糖如何影响兔肠和盲肠微生物活性,血液参数,增长业绩,car体特征,和消化率。总的来说,来自APRI品系的160只重563.29gm的5周龄兔子被随机分配到四个实验组,每组重复4只,雄性5只,雌性5只。使用四个实验组,如下:SUC1,SUC2和SUC3每天在水中获得75、150和300毫克三氯蔗糖/千克体重,而对照组则吃不补充的基础饮食。结果显示,对照组和SUC1组均显著(p<0.05)增加每日体重增加和最终体重。三氯蔗糖的添加显著提高了饲料转化率(p<0.05),降低了日采食量(gm/d)。实验组在死亡率方面没有显著差异。此外,三氯蔗糖处理对养分消化率没有显着影响,除了粗蛋白质消化,显著降低(p<0.05)。此外,不改变肝脏或肾脏功能,三氯半乳蔗糖给药显著(p<0.05)降低血清葡萄糖和甘油三酯水平,同时增加总脂质,胆固醇,与对照组相比,丙二醛。此外,蔗糖的添加导致细菌总数显着增加(p<0.05),乳酸菌,和梭菌属。,大肠杆菌数量减少。使用16SrRNA数据的进一步分析显示,三氯蔗糖上调乳杆菌基因的表达,但不上调梭菌或大肠杆菌的表达(p<0.05)。因此,可以得出结论,补充家兔三氯半乳蔗糖可以改变肠道微生物群,提高有益菌和饲料转化率,无副作用。此外,三氯半乳蔗糖可降低血糖并加剧高胆固醇血症,应谨慎使用。
    This study investigated how sucralose influenced rabbit intestine and caecal microbial activity, blood parameters, growth performance, carcass characteristics, and digestibility. In total, 160 5-week-old rabbits from the APRI line weighing 563.29 gm were randomly assigned to four experimental groups with four replicates-5 males and 5 females in each. Four experimental groups were used, as follows: SUC1, SUC2, and SUC3 got 75, 150, and 300 mg of sucralose/kg body weight in water daily, while the control group ate a basal diet without supplements. The results showed that both the control and SUC1 groups significantly (p < 0.05) increased daily weight gain and final body weight. Sucralose addition significantly improved feed conversion ratio (p < 0.05) and decreased daily feed intake (gm/d). The experimental groups do not significantly differ in terms of mortality. Furthermore, nutrient digestibility was not significantly affected by sucralose treatment, with the exception of crud protein digestion, which was significantly reduced (p < 0.05). Additionally, without altering liver or kidney function, sucralose administration dramatically (p < 0.05) decreased blood serum glucose and triglyceride levels while increasing total lipids, cholesterol, and malonaldehyde in comparison to the control group. Furthermore, the addition of sucrose resulted in a significant (p < 0.05) increase in the count of total bacteria, lactobacillus, and Clostridium spp., and a decrease in the count of Escherichia coli. Further analysis using 16S rRNA data revealed that sucralose upregulated the expression of lactobacillus genes but not that of Clostridium or E. Coli bacteria (p < 0.05). Therefore, it could be concluded that sucralose supplementation for rabbits modifies gut microbiota and boosts beneficial bacteria and feed conversion ratios without side effects. Moreover, sucralose could decrease blood glucose and intensify hypercholesterolemia and should be used with caution for human consumption.
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  • 文章类型: Journal Article
    在这项研究中,我们的目的是探讨中性粒细胞与淋巴细胞比率(NLR)之间的关系,血小板与淋巴细胞比率(PLR),全身免疫炎症指数(SII),淋巴细胞与单核细胞比率(LMR)和预后营养指数(PNI)与胃癌远处转移的关系,并建立了筛选远处转移患者的有效列线图。共纳入1281例胃癌住院患者,分为训练集和验证集。单变量,采用Lasso回归和多因素Logistic回归分析确定远处转移的危险因素。然后将独立预测因子纳入列线图模型。通过受试者工作特征(ROC)曲线评估列线图的预测性能和临床实用性,校准曲线和决策曲线分析。多因素Logistic回归分析确定D-二聚体,CA199、CA125、NLR和PNI为独立预测因子。基于这些因素的列线图曲线下面积在训练队列中为0.838,在验证队列中为0.811。校准图和决策曲线表明列线图在训练和验证队列中具有良好的预测性能和临床实用性。因此,我们的列线图可能是临床医生筛查有远处转移的胃癌患者的重要工具.
    In this study, We aim to explore the association between the neutrophil to lymphocyte ratio (NLR), platelet to lymphocyte ratio (PLR), systemic immune-inflammatory index (SII), lymphocyte to monocyte ratio (LMR) and prognostic nutritional index (PNI) and distant metastasis of gastric cancer and develop an efficient nomogram for screening patients with distant metastasis. A total of 1281 inpatients with gastric cancer were enrolled and divided into the training and validation set.Univariate, Lasso regression and Multivariate Logistic Regression Analysis was used to identify the risk factors of distant metastasis. The independent predictive factors were then enrolled in the nomogram model. The nomogram\'s predictive perform and clinical practicality was evaluated by receiver operating characteristics (ROC) curves, calibration curves and decision curve analysis. Multivariate Logistic Regression Analysis identified D-dimer, CA199, CA125, NLR and PNI as independent predictive factors. The area under the curve of our nomogram based on these factors was 0.838 in the training cohort and 0.811 in the validation cohort. The calibration plots and decision curves demonstrated the nomogram\'s good predictive performance and clinical practicality in both training and validation cohort. Therefore,our nomogram could be an important tool for clinicians in screening gastric cancer patients with distant metastasis.
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  • 文章类型: Journal Article
    水产养殖部门在全球粮食安全中发挥着至关重要的作用,然而,它努力应对传染病带来的重大挑战。猪乳球菌病是虹鳟鱼水产养殖的重大威胁之一,因为它有可能通过死亡造成严重的经济损失,增长率降低,对其他病原体的易感性增加。它对疾病管理策略提出了挑战,影响虹鳟鱼养殖的可持续性和盈利能力。当前的研究重点是在由链球菌引起的乳球菌病爆发期间,养殖的虹鳟鱼Oncorhynchusmykiss的血清血液参数的变化。采集血样进行生化分析,鱼被检查寄生虫和细菌,和来自细菌菌落的DNA进行PCR扩增并测序以进行鉴定。总的来说,13个生化参数,包括蛋白质,酶,脂质,化学品,矿物,在患病和健康鱼类的血清血液样本中进行测量。结果表明,在爆发期间,这些参数的水平发生了显着变化,强调感染对养殖虹鳟鱼血液状况的影响。患病鱼类的尿素水平明显高于对照组,和肌酐,磷,镁也表现出类似的趋势。对照鱼的丙氨酸氨基转移酶和总蛋白水平较高。组间氯化物水平差异显著。对照中的铁水平较高,患病鱼类中的铁水平较低。其他参数没有发现显著差异。这项研究揭示了在由L.garvieae引起的乳球菌病爆发期间,虹鳟鱼的血清血液参数发生了显着变化。这些变化突出了这些参数作为监测健康状况的工具的潜力,压力,和水产养殖管理。持续监测可以为疾病严重程度和整体鱼类健康提供有价值的见解,协助制定改进的管理实践。所提供的数据有助于了解猪乳球菌病的病理生理学,并为养殖虹鳟鱼制定有效的缓解策略。
    The aquaculture sector plays a vital role in global food security, yet it grapples with significant challenges posed by infectious diseases. Piscine lactococcosis is one of the significant threats in rainbow trout aquaculture due to its potential to cause severe economic losses through mortalities, reduced growth rates, and increased susceptibility to other pathogens. It poses challenges in disease management strategies, impacting the sustainability and profitability of rainbow trout farming. The current study focuses on the variations in serum blood parameters of farmed rainbow trout Oncorhynchus mykiss during a lactococcosis outbreak caused by Lactococcus garvieae. Blood samples were collected for biochemical analysis, fish were examined for parasites and bacteria, and DNA from bacterial colonies was PCR-amplified and sequenced for identification. Overall, 13 biochemical parameters, including proteins, enzymes, lipids, chemicals, and minerals, were measured in serum blood samples from both diseased and healthy fish. The results indicate significant alterations in the levels of these parameters during the outbreak, highlighting the impact of infections on the blood profile of farmed rainbow trout. Urea levels were significantly higher in diseased fish compared to controls, and creatinine, phosphorus, and magnesium also showed similar trends. Alanine aminotransferase and total protein levels were higher in control fish. Chloride levels differed significantly between groups. Iron levels were higher in controls and lower in diseased fish. No significant differences were found in other parameters. This study reveals significant changes in serum blood parameters of rainbow trout during a lactococcosis outbreak caused by L. garvieae. These changes highlight the potential of these parameters as tools for monitoring health status, stress, and aquaculture management. Continuous monitoring can provide valuable insights into disease severity and overall fish health, aiding in the development of improved management practices. The presented data contribute to understanding the pathophysiology of piscine lactococcosis and developing effective mitigation strategies for farmed rainbow trout.
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  • 文章类型: Journal Article
    这项研究的目的是评估不同营养策略对一年中干旱期间牧场肉牛养殖集约化的影响。将80头雄性牛(测试人员)随机分配到由Mombaça草(Megathyrsusmaximus)形成的16个围场中,每个围场共有五只动物(测试人员)。策略包括两个LC[10和16.7g·kg-1体重(BW)]和两个带有DDGS和SBM的PS,采用2×2阶乘排列的完全随机设计。化学,结构,并对牧草的生产特性进行了评估,以及表演,生产力,和补充动物的血清参数。当使用最低LC时,牧草的L:C(p=0.033)和CP含量(p=0.007)更高。接受最高LC的动物具有最高的补充剂摄入量(p<0.001)和最低的牧场摄入量(p<0.001)。LC为16.7g·kg-1体重(BW)的营养策略导致总BW增加更大,即,200kg·BWha-1更多。因此,较高的浓缩物水平确保肉牛放牧的更高生产力,和DDGS可以代替SBM在牧场上密集饲养肉牛的补充剂中使用,而不会损害动物的性能和生产力。
    The objective of this study was to evaluate the effect of different nutritional strategies on the intensification of beef cattle farming on pastures during the dry period of the year. Eighty male cattle (testers) were randomly allocated to 16 paddocks formed with Mombaça grass (Megathyrsus maximus), totaling five animals (testers) per paddock. The strategies consisted of two LCs [10 and 16.7 g·kg-1 body weight (BW)] and two PSs with DDGS and SBM in a completely randomized design with a 2 × 2 factorial arrangement. The chemical, structural, and productive characteristics of the forage were evaluated, as well as the performance, productivity, and serum parameters of the supplemented animals. The forage presented a greater L:C (p = 0.033) and CP content (p = 0.007) when the lowest LC was used. Animals that received the highest LC had the highest supplement intake (p < 0.001) and the lowest pasture intake (p < 0.001). The nutritional strategy with an LC of 16.7 g·kg-1 of body weight (BW) resulted in a greater increase in total BW, i.e., 200 kg·BW ha-1 more. Therefore, higher levels of concentrate ensure greater productivity for beef cattle grazing, and DDGS can replace SBM in supplements used in the intensive raising of beef cattle on pasture without compromising the performance and productivity of the animals.
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  • 文章类型: Journal Article
    在本地鸡肉日粮中使用棕色海藻(Eckloniamaxima)作为营养来源受到高膳食纤维水平的限制。用牡蛎蘑菇(平菇)产卵(OMS)接种海藻可以增强用过的蘑菇基质(SMS)的效用。这项研究调查了饲喂增加水平的褐藻SMS对生长性能的影响,生理反应,和博什维尔德公鸡的肉质参数。对总共324只4周龄的Boschveld公鸡进行称重,并随机分配给36个围栏(每个围栏9只鸟),以在每次饮食处理中重复六次。饮食配制如下:标准种植者饮食(CON);和CON含有150g/kg的棕色海藻,以0(SMS0)接种OMS,20(SMS20),30(SMS30),40(SMS40)和50%(SMS50)。饲喂饮食CON的禽类在第7、8、12、14和15周具有比所有其他SMS处理水平最少的采食量(p<0.05)。在第6、7、9和14周,与CON相比,饮食SMS40促进更高(p<0.05)的体重增加(BWG)。在第7周,增益与饲料比线性增加[R2=0.288;p=0.010],11[R2=0.581,p=0.0001]和14[R2=0.389,p=0.004],分别。在第5周观察到BWG的二次反应(p<0.05),白细胞,异嗜性粒细胞,血小板,淋巴细胞,单核细胞,随着OMS水平的增加,相对脾脏和大肠重量。随着OMS水平的增加,屠宰[R2=0.197,p=0.017]和乳房重量[R2=0.197,p=0.020]记录到线性增加。与CON和SMS治疗组相比,饮食SMS0促进更高(p<0.05)的相对盲肠重量。对于胸肉品质参数,均未观察到二次或线性响应(p>0.05)。总之,饲喂褐藻SMS提高了生长性能和屠宰重量,改变了一些血液参数和内部器官,不影响Boschveld公鸡的胸肉质量。基于BWG的二次响应,在基于棕色海藻的Boschveld公鸡饮食中,最佳OMS水平推断为20%。
    Use of brown seaweed (Ecklonia maxima) as a nutraceutical source in indigenous chicken diets is limited by high dietary fibre levels. Inoculating seaweeds with oyster mushroom (Pleurotus ostreatus) spawn (OMS) could enhance the utility of the spent mushroom substrate (SMS). This study investigated the effect of feeding incremental levels of brown seaweed SMS on growth performance, physiological responses, and meat quality parameters in Boschveld roosters. A total of 324, 4-week-old Boschveld roosters were weighed and randomly allotted to 36 pens (9 birds per pen) to produce six replicates per dietary treatment. The diets were formulated as follows: a standard grower diet (CON); and CON containing 150 g/kg of brown seaweed inoculated with OMS at 0 (SMS0), 20 (SMS20), 30 (SMS30), 40 (SMS40) and 50% (SMS50). Birds fed diet CON had the least feed intake (p < 0.05) than all the other SMS treatment levels in weeks 7, 8, 12, 14 and 15. Diet SMS40 promoted higher (p < 0.05) body weight gain (BWG) than CON in weeks 6, 7, 9 and 14. Gain-to-feed ratio linearly increased in weeks 7 [R2 = 0.288; p = 0.010], 11 [R2 = 0.581, p = 0.0001] and 14 [R2 = 0.389, p = 0.004], respectively. Quadratic responses (p < 0.05) were observed for BWG in week 5, white blood cells, heterophils, platelets, lymphocytes, monocytes, and relative spleen and large intestine weights as OMS levels increased. Linear increases were recorded for slaughter [R2 = 0.197, p = 0.017] and breast weights [R2 = 0.197, p = 0.020] as OMS levels increased. Diet SMS0 promoted higher (p < 0.05) relative caeca weights than the CON and SMS treatment groups. Neither quadratic nor linear responses (p > 0.05) were observed for breast meat quality parameters. In conclusion, feeding brown seaweed SMS improved growth performance and slaughter weight, altered some blood parameters and internal organs, without affecting breast meat quality of Boschveld roosters. Based on the quadratic response for BWG, the optimum OMS level was deduced at 20% in a brown seaweed-based Boschveld rooster diet.
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