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Frecuencia de infección con Leptospira sp. en perros de una comunidad rural de Yucatán, México. 墨西哥尤卡坦农村社区狗的钩端螺旋体感染频率。
IF 0.4 4区 农林科学 Q4 Veterinary Pub Date : 2021-03-18 DOI: 10.21897/RMVZ.2098
M. Torres-Castro, Darío Díaz-Aceves, A. Suárez-Galaz, Enrique Reyes-Novelo, R. Rodríguez-Vivas
Objetivo. Describir la frecuencia de infección con Leptospira sp. en perros de una comunidad rural del estado de Yucatán, México. Materiales y métodos. Se recolectaron muestras sanguíneas en 120 perros de Maxcanú, Yucatán. Además, se registraron características como sexo, edad, raza y se preguntó a los dueños sobre el historial de vacunas. Las muestras se transportaron al laboratorio y mediante la prueba diagnóstica de reacción en cadena de la polimerasa (PCR), se identificó la amplificación de dos fragmentos del gen 16S ribosomal perteneciente a Leptospira sp. Resultados. La frecuencia de infección encontrada fue de 1.7% (2/120; IC95%= 0.2 – 5.9%). Ambos perros positivos fueron machos, cachorros, mestizos (mezcla de razas) y sin historial de vacunación. Conclusiones. Se describe una frecuencia baja de infección en perros del sitio de estudio. Es necesaria más investigación epidemiológica para conocer las especies de Leptospira involucradas en la infección e identificar el riesgo de transmisión a los habitantes u otros animales domésticos del sitio de estudio.
目标。描述墨西哥尤卡坦州一个农村社区的狗感染钩端螺旋体的频率。材料和方法。在尤卡坦州马克斯卡努的120只狗身上采集了血液样本。此外,还记录了性别、年龄、种族等特征,并询问了所有者的疫苗历史。样本被送往实验室,通过聚合酶链反应(PCR)诊断测试,确定了钩端螺旋体属16S核糖体基因的两个片段的扩增。结果。发现的感染频率为1.7%(2/120;95%可信区间=0.2-5.9%)。这两只阳性狗都是雄性、小狗、混血儿(混合种族),没有接种疫苗的历史。结论。研究地点的狗感染频率较低。需要进行更多的流行病学研究,以了解参与感染的钩端螺旋体物种,并确定向研究地点的居民或其他家畜传播的风险。
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引用次数: 1
Bivariate analysis for the improvement of genetic evaluations with incomplete records in Charolais cattle 夏来牛不完全记录遗传评价改进的双变量分析
IF 0.4 4区 农林科学 Q4 Veterinary Pub Date : 2021-03-17 DOI: 10.21897/RMVZ.2128
Jessica Beatriz Herrera-Ojeda, G. M. Parra-Bracamonte, N. López-Villalobos, J. Herrera-Camacho, K. E. Orozco-Durán
Objective: Estimate (co)variance components and genetic parameters of live weight traits and examine the effect of selection culling when using bivariate analysis in registered Charolais beef cattle. Materials and methods: The effect of incomplete data over accuracies was compared, expected progeny differences (EPD) and standard errors of prediction (SEP) were obtained and evaluated by comparing univariate and bivariate models for birth (BW), weaning (WW) and yearling (YW) weights. Results: Bivariate models for WW and YW, improved accuracies of EPDs and reduced the SEPs. Joint analysis for BW and WW increased in a 38% the accuracies and reduced SEP estimators for YW (p<0.001). Accuracies of EPD for BW obtained from univariate models were improved when BW was included in bivariate models. Conclusions: The results support the use of bivariate genetic analysis in limited or incomplete live weight indicators databases that were registered after birth, such as weaning and yearling weight.
目的:利用双变量分析方法估计夏来肉牛活重性状的co方差成分和遗传参数,并检验选择剔除的效果。材料与方法:比较不完整数据对准确性的影响,通过比较出生体重(BW)、断奶体重(WW)和一岁体重(YW)的单变量和双变量模型,获得并评价预期子代差异(EPD)和预测标准误差(SEP)。结果:WW和YW的二元模型提高了epd的准确性,降低了sep。BW和WW的联合分析提高了38%的准确率,降低了YW的SEP估计值(p<0.001)。在二元模型中加入体重,可以提高单变量模型中体重的EPD精度。结论:该结果支持在出生后登记的有限或不完整的活重指标数据库(如断奶和一岁体重)中使用双变量遗传分析。
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引用次数: 0
Vacunas para COVID-19 - ¿Podemos evitar volver a vivir en un pueblo fantasma? 新冠疫苗-19-我们能避免再次生活在鬼城吗?
IF 0.4 4区 农林科学 Q4 Veterinary Pub Date : 2021-03-16 DOI: 10.21897/RMVZ.2350
A. RodrÍguez-Morales, Salim Máttar, Marco González T
Durante el último año, la pandemia de la Enfermedad por Coronavirus 2019 (COVID-19), causada por el Síndrome Respiratorio Severo Coronavirus 2 (SARS-CoV-2), ha causado estragos considerables en la sociedad (1). De hecho, esta ha sido una crónica de una zoonosis anunciada (2,3). Su impacto ha sido aún más profundo en países en desarrollo (4,5), como Colombia (6,7,8). Hasta el momento, hasta el 9 de marzo de 2021, el mundo ha registrado 117.5 millones de casos de COVID-19, con 2.6 millones de muertes (2.22%). Colombia está incluida en el Top 20 de países con el mayor número de casos (2.282.372) y en el Top 20 de muertes a nivel mundial (60.676).
在过去的一年里,由严重呼吸道综合征冠状病毒2(SARS-CoV-2)引起的2019年冠状病毒疾病(Covid-19)大流行对社会造成了相当大的破坏(1)。事实上,这是一部宣布的人畜共患病编年史(2.3)。它对哥伦比亚(6.7.8)等发展中国家(4.5)的影响更为深远。到目前为止,截至2021年3月9日,世界已记录了1.175亿例新冠病毒病例,其中260万人死亡(2.22%)。哥伦比亚是病例最多的20个国家(2282372例)和全球死亡人数最多的20个国家(60676例)。
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引用次数: 2
Crecimiento y supervivencia de Cryphiops caementarius en cocultivo con Oreochromis niloticus a diferentes densidades 不同密度与尼罗黄鳝共育时的生长和存活
IF 0.4 4区 农林科学 Q4 Veterinary Pub Date : 2021-03-15 DOI: 10.21897/RMVZ.1952
Anghela Mogollón-Calderón, W. Reyes-Avalos
Objective. To evaluate the growth and survival of Cryphiops caementarius in coculture with Oreochromis niloticus at different densities. Materials and methods. Male prawns (5.86 cm and 7.65 g) and reverse tilapia fingerlings (5.65 cm and 2.61 g) were used. Nine aquariums (55 L) were used. Six containers were installed in each aquarium, where one prawn was stocked per container (32 prawn/m2), and in the remaining water, tilapia was stocked at densities of 100, 200 and 300 fish/m3. Balanced feed was used. The daily ration for prawns was 6% and for tilapia, it was 5% of the total
客观的评价不同密度条件下盲肠Cryphiops caementarius与尼罗罗非鱼共培养的生长和存活情况。材料和方法。使用雄性对虾(5.86厘米和7.65克)和反罗非鱼鱼种(5.65厘米和2.61克)。使用了9个水族馆(55升)。每个水族馆安装了六个容器,每个容器储存一只对虾(32只/平方米),在剩余的水中,罗非鱼的密度分别为100、200和300条鱼/平方米。采用平衡进料。对虾的日粮为6%,罗非鱼的日粮占总日粮的5%
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引用次数: 0
¿Podría el hantavirus Seúl ser una etiología de la enfermedad febril aguda indiferenciada en Colombia? 汉坦病毒首尔是否是哥伦比亚未分化的急性发热性疾病的病因?
IF 0.4 4区 农林科学 Q4 Veterinary Pub Date : 2021-02-01 DOI: 10.21897/RMVZ.2353
Carlos Ramiro Silva-Ramos, A. A. Faccini-Martínez
Los hantavirus se clasifican en dos grupos principales, hantavirus del Viejo Mundo' y del ''Nuevo Mundo' debido a la distribución geográfica de sus reservorios (roedores) (1). Los hantavirus del Viejo Mundo (por ejemplo, virus Hantaan, Seúl, Puumala, entre otros) causan fiebre hemorrágica con síndrome renal (HFRS, por sus siglas en inglés), mientras que los hantavirus del Nuevo Mundo (por ejemplo, virus Sin Nombre, Andes, entre otros) afectan principalmente al pulmón causando el síndrome pulmonar por hantavirus (HPS, por sus sigla en inglés) (1).
由于其水库(啮齿动物)的地理分布,汉坦病毒分为两大类,即旧世界汉坦病毒和“新世界汉坦病毒”(1)。旧世界的汉坦病毒(如汉坦病毒、首尔病毒、普乌马拉病毒等)会引起肾综合征出血热(HFRS),而新世界的汉坦病毒(如无名病毒、安第斯山脉病毒等)主要影响肺部,导致汉坦病毒肺综合征(HPS)(1)。
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引用次数: 0
Extrusión húmeda del pasto Kikuyo (Cenchrus clandestinus (Hochst ex Chiov)) Kikuyo草(Cenchrus nexdus)的湿挤压
IF 0.4 4区 农林科学 Q4 Veterinary Pub Date : 2020-12-10 DOI: 10.21897/rmvz.1964
Ligia Johana Jaimes-Cruz, Esdras Mendoza-Orellana, Cristian Menjivar-Dominguez, Elsy Montoya-Almendarez, Ángel Giraldo-Mejía, H. Correa-Cardona
Objetives. Test the effect of wet extrusion on the in vitro dry matter (IVDMD) and neutral detergent fiber (IVNDFD) digestibility (pepsin-cellulase) of kikuyu grass (Cenchrus clandestinus (Hochst ex Chiov)). Materials and methods. Six samples of this pasture with 35 days of regrowth were collected (5.0 kg/sample) and cut at 2.0 cm; from each sample was took a sub-sample to create a composite sample of raw grass in which was analyzed the content of crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF), acid detergent lignin (ADL), ashes, calcium (Ca), phosphorus (P), potassium, IVDMD and IVNDFD; the rest quantity of each six samples was submitted to a wet
Objetives。试验了湿挤压对吉库尤草体外干物质(IVDMD)和中性洗涤纤维(IVNDFD)消化率(胃蛋白酶-纤维素酶)的影响。材料和方法。收集再生35 d的6个样品(5.0 kg/个),切至2.0 cm处;从每个样品中取一个子样品制成原料草复合样品,分析其中粗蛋白质(CP)、中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)、酸性洗涤木质素(ADL)、灰分、钙(Ca)、磷(P)、钾、IVDMD和IVNDFD的含量;每六个样品的剩余量提交到一个湿
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引用次数: 1
Aspectos reproductivos de Grapsus grapsus (Decapoda: Grapsidae) en islas del sureste del Golfo de California 加利福尼亚湾东南部岛屿上Grapsus Grapsus(十足类:Grapsidae)的繁殖方面
IF 0.4 4区 农林科学 Q4 Veterinary Pub Date : 2020-12-09 DOI: 10.21897/rmvz.1953
Yecenia Gutiérrez-Rubio, J. F. Arzola-González, Raúl Pérez-González, G. Rodríguez-Domínguez, José Salgado-Barragán, J. Ramírez-Pérez, Adrián González-Castillo
Objetive. The sex ratio, ovigerous females, first sexual maturity lengths and fecundity of Grapsus grapsus crab in the Lobos, Venados and Pajaros islands (southeastern Gulf of California) were analyzed. Materials and methods. Sampling was monthly between March 2011 and February 2012, collections were nocturnal at low tide, 30 crabs were collected in a quadrant (25 m2) for island and
目标。分析了洛博斯岛、韦纳多斯岛和帕贾罗斯岛(加利福尼亚湾东南部)Grapsus Grapsus抓斗蟹的性别比、产卵雌性、首次性成熟长度和繁殖力。材料和方法。2011年3月至2012年2月期间,每月进行一次采样,在退潮时夜间采集,在岛屿和
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引用次数: 0
Canola processing effects on the intestine, blood, and kidney of broiler breeder hens 菜籽油加工对肉种鸡肠道、血液和肾脏的影响
IF 0.4 4区 农林科学 Q4 Veterinary Pub Date : 2020-12-04 DOI: 10.21897/rmvz.1878
M. Jafari, S. Gharahveysi
Objective. Canola meal is one of the most important vegetable protein that contained the antinutritional factors. The aim of the study was to study the effect of canola processing on the intestine traits, blood metabolites, and kidney enzymes of broiler breeders. Material and methods. Four hundred fifty broiler breeder hens were used for 3 months. The completely randomized design was used with 6 treatments (unprocessed, processed by Lactobacillus Plantarum, Bacillus Subtilis, Aspergillus Oryzae, Neurospora Cytophilla, and Alkalase enzyme) and 5 replications. The collected data were analyzed by the LSmeans procedure of SAS statistical software. Results. The effects of treatments were significant on blood metabolites (p<0.05). Glucose concentration and High-density lipoprotein (HDL) were increased by processing methods. Also, the caecum, jejunum and duodenum weight were influenced(p<0.05). The weight of the duodenum and jejunum was increased and caecum weight was decreased. The processing of canola meal increased the length of the villi and decreased the depth of the crypt of the jejunum (p<0.05). Treatments effect was significant on the Alanine transaminase (ALT) and Alkaline phosphatase (ALP) (p<0.05). The effect of treatments was significant on the digestive amylase, lipase and protease activity (p<0.05). The canola process improved its digestibility. In other words, its protein quality, fatty acid profile and antimicrobial properties were improved. Conclusions. The different processing methods of canola improved the hen’s traits. It can be recommended to use the processed meal instead of the raw canola meal.
目标。菜籽粕是植物蛋白中最重要的抗营养因子之一。本试验旨在研究油菜加工对肉种鸡肠道性状、血液代谢产物和肾脏酶的影响。材料和方法。450只肉用种鸡试验3个月。采用完全随机设计,共6个处理(未处理、植物乳杆菌、枯草芽孢杆菌、米曲霉、嗜细胞神经孢子菌和碱酶处理),5个重复。收集的数据采用SAS统计软件的LSmeans程序进行分析。结果。治疗对血代谢产物的影响有统计学意义(p<0.05)。葡萄糖浓度和高密度脂蛋白(HDL)升高。盲肠、空肠和十二指肠重量也受影响(p<0.05)。十二指肠和空肠重量增加,盲肠重量减少。菜籽粕处理增加了空肠绒毛的长度,降低了空肠隐窝的深度(p<0.05)。处理对谷丙转氨酶(ALT)和碱性磷酸酶(ALP)有显著影响(p<0.05)。各处理对消化淀粉酶、脂肪酶和蛋白酶活性有显著影响(p<0.05)。油菜籽加工提高了其消化率。也就是说,它的蛋白质品质、脂肪酸谱和抗菌性能得到了改善。结论。不同的油菜籽加工方法可改善母鸡的性状。可以建议使用加工过的菜籽粕代替生菜籽粕。
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引用次数: 0
Organic supplementation of Cu and Se in the diets of Normande dairy cows 诺曼底奶牛日粮中有机添加铜和硒的研究
IF 0.4 4区 农林科学 Q4 Veterinary Pub Date : 2020-12-03 DOI: 10.21897/rmvz.1983
Pedro Rodríguez-Hernández, Diana Cediel-Devia, R. Castañeda-Serrano
Objective. To evaluate the effects of organic and inorganic copper (Cu) and selenium (Se) on milk production, milk quality and reproductive parameters of Normande dairy cows. Materials and methods. 36 multiparous cows (BW = 600 ± 32 kg) were used, distributed in completely randomized blocks. Treatments were: Control: without mineral supplementation, IS: inorganic mineral supplementation with Cu and Se, IS+OS: 50% Inorganic supplementation + 50% organic supplementation, with an experimental period of 150 days (30 days before calving and 120 days of lactation). The variables evaluated were milk production and quality (total solids, protein, fat, somatic cells and MUN), blood metabolites (glucose, betahydroxybutyrate and BUN) and reproductive parameters (open days, days to first service and services per conception). Results. No differences were observed in milk production and quality (p>0.05). However, open days and services per conception were shorter when cows were supplemented with organic minerals (p<0.05). Conclusions. In this study milk production, milk quality and blood metabolites were not affected by supplementation with Se and Cu. However, the reproductive parameters of the cows improved when supplemented with organic Se and Cu.
客观的评价有机和无机铜(Cu)和硒(Se)对诺曼德奶牛产奶量、奶品质和繁殖参数的影响。材料和方法。采用36头多胎奶牛(体重=600±32kg),按完全随机分组。处理为:对照组:不补充矿物质,IS:补充Cu和Se的无机矿物质,IS+OS:50%无机补充+50%有机补充,实验期为150天(产仔前30天和哺乳期120天)。评估的变量包括牛奶产量和质量(总固体、蛋白质、脂肪、体细胞和MUN)、血液代谢产物(葡萄糖、β-羟基丁酸和BUN)和生殖参数(开放日、首次服务天数和每次受孕的服务)。后果在产奶量和质量方面没有观察到差异(p>0.05)。然而,当奶牛补充有机矿物质时,开放日和每次受孕的服务时间更短(p<0.05)。结论。在本研究中,添加硒和铜不会影响奶牛的产奶量、奶质量和血液代谢产物。但添加有机硒和铜后,奶牛的生殖参数有所改善。
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引用次数: 1
The effect of dried white mulberry (Morus alba) pulp supplementation in diets of laying quail 产蛋鹌鹑饲粮中添加干白桑(Morus alba)果肉的效果
IF 0.4 4区 农林科学 Q4 Veterinary Pub Date : 2020-12-03 DOI: 10.21897/rmvz.1940
A. Y. Şengül, T. Şengül, Ş. Çelik, Gülüzar Şengül, Aydın Daş, H. Inci, A. Ş. Bengü
Objective. This study was conducted to research the effects of different levels of dried white mulberry (Morus alba) pulp supplementation in diets of laying quail on yield performances, egg quality, blood parameters, yolk fatty acid profiles and cholesterol concentrations. Materials and Methods. A completely randomized experimental design, with four treatments and four replicates, was applied. The experimental treatments were M0: control diet; M4: dietary inclusion of 4% mulberry pulp; M8: dietary inclusion of 8% mulberry pulp; M12: dietary inclusion of 12% mulberry pulp. This experiment was carried out for 4 weeks, and 128 7-week-old female quail were used. Results. Addition of dried mulberry pulp to the diet significantly affected weekly feed intake, egg yield, albumin index, yolk weight, triglyceride, LDL, serum cholesterol and yolk cholesterol levels (p<0.05, p<0.01). The feed conversion ratio, egg weight, and egg yolk fatty acid profile were not significantly affected by the dried mulberry pulp in the diet. Conclusions. As a result, it may be stated that adding dried mulberry pulp up to 8% of the diets of laying quail does not cause any adverse effects and may be used without any problems.
客观的本研究旨在研究日粮中添加不同水平的白桑浆对鹌鹑生产性能、蛋品质、血液参数、蛋黄脂肪酸和胆固醇浓度的影响。材料和方法。采用完全随机的实验设计,有四个处理和四个重复。实验处理为M0:对照日粮;M4:日粮中含4%桑椹果肉;M8:膳食中含有8%的桑椹果肉;M12:膳食中含有12%的桑椹果肉。本实验进行了4周,使用了128只7周龄的雌性鹌鹑。后果日粮中添加桑椹干浆显著影响周采食量、产蛋量、白蛋白指数、蛋黄重量、甘油三酯、低密度脂蛋白、血清胆固醇和蛋黄胆固醇水平(p<0.05,p<0.01)。结论。因此,可以说,在鹌鹑日粮中添加高达8%的干桑椹浆不会造成任何不良影响,并且可以毫无问题地使用。
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引用次数: 5
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Revista Mvz Cordoba
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