Performance, blood parameters, and carcass yield of broiler chickens supplemented with Mexican oregano oil

ABSTRACT - The objective of the current study was to evaluate performance, blood parameters, and carcass yield of broilers supplemented with Mexican oregano oil. A total of 162 one-day-old broilers were randomly distributed into three dietary treatments: control diet (without oregano oil or antibiotic); control diet + 0.25 g kg–1 of oxytetracycline; and control diet + 0.4 g kg–1 of Mexican oregano oil. Treatment with organ oil had positive effects on body weight at 35 and 42 days. Feed intake was significantly different at 21 and at 1-42 days; control treatment presented the highest feed intake at 28 and 35 days, while treatment with oxytetracycline had the lowest feed intake from 21 to 42 days. Weekly body weight gain was different at 42 days, in which treatment with oregano oil was the highest and control the lowest. Feed efficiency rate was significantly different at 42 and at 1-42 days; treatment with oxytetracycline and treatment with oregano oil had the best values over control treatment. Blood parameters were found different among treatments, in which treatment with oregano oil was the highest in cholesterol and high-density lipoprotein at 42 days. Carcass and blood biometric variables were not different among treatments. The amount of 0.4 g kg–1 of Mexican oregano oil in diets improves high-density lipoprotein, body weight, and feed efficiency rate of broiler chickens. Key Words: blood profile, broilers, Mexican oregan

CARACTERIZACIÓN DEL ACEITE ESENCIAL DE ORÉGANO LISO (Poliomintha longiflora Gray) DE LA LOCALIDAD INFIERNILLO EN EL MUNICIPIO DE HIGUERAS, N.L., MEXICO

EL presente trabajo se realizó en la Facultad de Agronomía de la Universidad Autónoma de Nuevo León y en el Centro de Investigación para los Recursos Naturales (CIReNa) en Salaices López Chihuahua. Se caracterizó el aceite esencial de orégano liso (Poliomintha longiflora Gray) cosechado en el municipio de Higueras, Nuevo León, específicamente en la localidad de Infiernillo en La Sierra de Picachos. Se seleccionaron aleatoriamente cinco sitios de muestreo, delimitándose un área de 10 m X 3 m (30 m2), en cada uno de ellos. Se tomaron datos de la ubicación geográfica, la altura de planta, y la cobertura foliar. Posteriormente el material vegetativo fue colocado en una cámara de secado por 72 horas a una temperatura de 65°C. Se separaron las hojas de los tallos. Se evaluó la producción por hectárea de la biomasa verde y seca. Para los análisis bromatológicos se molió una muestra representativa de 15 gramos de hojas secas, y se determinó: materia seca, cenizas, proteína cruda, fibra cruda, extracto etéreo y extracto libre de Nitrógeno (1). En el laboratorio del CIReNa se realizó la extracción del aceite esencial, utilizando el método de arrastre con vapor de agua, y con el aceite recolectado se preparó la muestra para caracterizarlo en el Cromatógrafo de Gases Masas. Así mismo, se evaluó el rendimiento del aceite. La caracterización total de los compuestos presentes en el aceite de orégano fueron determinados en la Universidad Autónoma de Chihuahua. Los resultados mostraron un avance en el estudio de la especie conocida como orégano liso (Poliomintha longiflora), ya que hasta la fecha no existían reportes sobrela composición de los aceites esenciales.Palabras clave: orégano, aceite esencial, análisis quimicooregano, essential oil, chemical analyse

Mexican oregano (Lippia berlandieri Schauer) oil on turkey slaughter quality/Aceite de orégano mexicano (Lippia berlandieri Schauer) sobre la calidad en el sacricio de pavos

The quality of slaughtered turkeys fed a diet supplemented with Mexican oregano (Lippia berlandieri Schauer) oil was investigated. Two treatments were studied. T0: control diet and T1: control diet + 400 mg kg−1 of oregano oil with 60 % carvacrol. Live weight at slaughter was dierent, with T0 weighing 11.0 kg and T1 11.89 kg, while the performance of feathers and drumstick was higher in T0 (4.33 and 3.18 % respectively). Viscera, blood, head, neck and hot and cold carcass yield did not dier between treatments (p > 0.05). Oregano oil at 400 mg kg−1 can be used in the production of turkeys to inuence slaughter quality

Errores algebraicos más comunes en los estudiantes de primer ingreso de las carreras de Informática, Administración y Turismo del Centro Universitario de los Valles de la Universidad de Guadalajara

Abstract In this research the most common algebraic errors committed by first semester students of Informatics, Administration and Tourism programs are analyzed. The idea of studying algebraic errors is due to the fact that basic algebraic knowledge constitutes a desirable knowledge before studying the subjects of Math I and Precalculus. The test was applied to 198 students. This test is formed by 15 reagents of multiple option and it had a 51,31% of incorrect answers, and 5,08% of noanswered questions. The general average of the 198 students is 43,60. A student did not obtain any correct answer, as well as none got the 15 reagents correctly. The most common error was for the reagent number 15 with the 69,19% of incorrect answers; this point refers to find the solution of a quadratic equation.En la presente investigación se analizan los errores algebraicos más comunes que cometen los estudiantes de primer ingreso de las licenciaturas de Informática, Administración y Turismo. La acotación del estudio a errores algebraicos se debe a que los conocimientos algebraicos básicos constituyen un conocimiento deseable antes de cursar las asignaturas de Matemáticas I y Precálculo. El test se aplicó a un total de 198 estudiantes, el cual consta de 15 reactivos de opción múltiple y se tiene un 51.31% de respuestas incorrectas, un 5.08% de respuestas sin contestar. El promedio general de los 198 estudiantes es de 43.60. Un estudiante no obtuvo ninguna respuesta correcta, así como ninguno los 15 reactivos correctamente. El error más común fue para el reactivo número 15 con el 69.19% de respuestas incorrectas; este reactivo serefiere a encontrar la solución de una ecuación cuadrática.&nbsp

Malformations of the craniocervical junction (chiari type I and syringomyelia: classification, diagnosis and treatment)

Chiari disease (or malformation) is in general a congenital condition characterized by an anatomic defect of the base of the skull, in which the cerebellum and brain stem herniate through the foramen magnum into the cervical spinal canal. The onset of Chiari syndrome symptoms usually occurs in the second or third decade (age 25 to 45 years). Symptoms may vary between periods of exacerbation and remission. The diagnosis of Chiari type I malformation in patients with or without symptoms is established with neuroimaging techniques. The most effective therapy for patients with Chiari type I malformation/syringomyelia is surgical decompression of the foramen magnum, however there are non-surgical therapy to relieve neurophatic pain: either pharmacological and non-pharmacological. Pharmacological therapy use drugs that act on different components of pain. Non-pharmacological therapies are primarly based on spinal or peripheral electrical stimulation

A Single Nucleotide Polymorphism in the Il17ra Promoter Is Associated with Functional Severity of Ankylosing Spondylitis

The aim of this study was to identify new genetic variants associated with the severity of ankylosing spondylitis (AS). We sequenced the exome of eight patients diagnosed with AS, selected on the basis of the severity of their clinical parameters. We identified 27 variants in exons and regulatory regions. The contribution of candidate variants found to AS severity was validated by genotyping two Spanish cohorts consisting of 180 cases/300 controls and 419 cases/656 controls. Relationships of SNPs and clinical variables with the Bath Ankylosing Spondylitis Disease Activity and Functional Indices BASDAI and BASFI were analyzed. BASFI was standardized by adjusting for the duration of the disease since the appearance of the first symptoms. Refining the analysis of SNPs in the two cohorts, we found that the rs4819554 minor allele G in the promoter of the IL17RA gene was associated with AS (p<0.005). This variant was also associated with the BASFI score. Classifying AS patients by the severity of their functional status with respect to BASFI/disease duration of the 60th, 65th, 70th and 75th percentiles, we found the association increased from p60 to p75 (cohort 1: p<0.05 to p<0.01; cohort 2: p<0.01 to p<0.005). Our findings indicate a genetic role for the IL17/ILRA axis in the development of severe forms of AS

Mexican oregano essential oils given in drinking water on performance, carcass traits, and meat quality of broilers

The objective of this study was to evaluate the effects of 2 Mexican oregano essential oils (MOO), from Poliomintha longiflora Gray (PLG) and Lippia berlandieri Schauer (LBS), in drinking water (DWt) on the performance, slaughter variables, and meat quality of broilers over a 40 D period of growth. A total of 180 non-sexed Ross-308 broilers (1-day-old) were randomly assigned to 3 treatments with 6 replications each (10 birds per replicate): CON = DWt control (without MOO); PLG = DWt + 400 mg/L of PLG; and LBS = DWt + 400 mg/L of LBS. The CON, PLG, and LBS broilers body weights were similar (P > 0.05) at all times. Feed intake (FI) was different by treatment (P 0.05), although WG for CON was slightly higher. In CON broilers, slaughter weight was highest (P < 0.05), but thigh yield was lowest (P < 0.05). The CON and PLG treatments were lower (P < 0.05) in thigh and leg cooking losses. The PLG treatment presented the highest values (P < 0.05) for breast-meat redness, saturation index, shear force, odor, taste, and overall sensory acceptability. The LBS was higher (P < 0.05) for breast-meat shear force, cohesiveness and resilience, but lower (P <0.05) for sensory attributes. Mexican oregano essential oils at 400 mg/L can serve as natural alternative additives in DWt to improve broiler production and meat quality

Utility of the Tourniquet Test and the White Blood Cell Count to Differentiate Dengue among Acute Febrile Illnesses in the Emergency Room

Dengue often presents with non-specific clinical signs, and given the current paucity of accurate, rapid diagnostic laboratory tests, identifying easily obtainable bedside markers of dengue remains a priority. Previous studies in febrile Asian children have suggested that the combination of a positive tourniquet test (TT) and leucopenia can distinguish dengue from other febrile illnesses, but little data exists on the usefulness of these tests in adults or in the Americas. We evaluated the diagnostic accuracy of the TT and leucopenia (white blood cell count <5000/mm3) in identifying dengue as part of an acute febrile illness (AFI) surveillance study conducted in the Emergency Department of Saint Luke's Hospital in Ponce, Puerto Rico. From September to December 2009, 284 patients presenting to the ED with fever for 2–7 days and no identified source were enrolled. Participants were tested for influenza, dengue, leptospirosis and enteroviruses. Thirty-three (12%) patients were confirmed as having dengue; 2 had dengue co-infection with influenza and leptospirosis, respectively. An infectious etiology was determined for 141 others (136 influenza, 3 enterovirus, 2 urinary tract infections), and 110 patients had no infectious etiology identified. Fifty-two percent of laboratory-positive dengue cases had a positive TT versus 18% of patients without dengue (P<0.001), 87% of dengue cases compared to 28% of non-dengue cases had leucopenia (P<0.001). The presence of either a positive TT or leucopenia correctly identified 94% of dengue patients. The specificity and positive predictive values of these tests was significantly higher in the subset of patients without pandemic influenza A H1N1, suggesting improved discriminatory performance of these tests in the absence of concurrent dengue and influenza outbreaks. However, even during simultaneous AFI outbreaks, the absence of leucopenia combined with a negative tourniquet test may be useful to rule out dengue