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Search Results: 1 - 10 of 302235 matches for " Edwin J; Maldonado-Estrada "
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Relación entre el recuento de células somáticas individual o en tanque de leche y la prueba CMT en dos fincas lecheras del departamento de Antioquia (Colombia)
Cerón-Mu?oz,Mario F; Agudelo,Edwin J; Maldonado-Estrada,Juan G;
Revista Colombiana de Ciencias Pecuarias , 2007,
Abstract: in order to establish a mathematical model with which to predict the bull tank somatic cell count (btscc) of herds with sub clinical mastitis and to search for possible relationships between cmt results and individual somatic cell counts (scc) or btscc, a descriptive study was carried out in two farms located in the dairy region of antioquia (colombia), in which lactating dairy cows (n = 95) were sampled during the morning and afternoon milking (once a month/3 months). cmt evaluation was performed at the afternoon milking at each time point of evaluation. in addition, total milk produced by individual cows was recorded and a milk sample was taken to perform scc. similarly, three samples of milk were taken from the tank to measure btscc. all milk samples were processed by triplicates by using a fossomatic-90 equipment. logarithmic transformation of data were done to normalize the scc and btscc results according to the model: logarithmic scc (sccl) = log2(scc/100) +3, and analysis of variance were performed. a significant relationship (p<0.05) was found between the percent of positive quarters (at least one cross by cmt) and the btscc taken at the afternoon milking. accordingly, a model was established to define the btscc value depending on the percentage of cmt positive quarters. the average scc of 206.630 and 145.935 cel/ml, were found for afternoon and morning milking, respectively; in as much as the average btscc found were 186.830 and 93.145 cel/ml, for afternoon and morning milking, respectively. furthermore, a significant relationship (p<0.05) was found between the scc of the afternoon milking and the btscc. the btscc values were lower than the limit values accepted for the united sates and european countries, which suggest that under strictly controlled management policies the dairy herds from antioquia could meet the international standards for milk exportation. finally, further studies are required in order to precise and define the source of variations foun
Relación entre el recuento de células somáticas individual o en tanque de leche y la prueba CMT en dos fincas lecheras del departamento de Antioquia (Colombia) Relationship between individual and bull tank somatic cell counts with CMT test in two dairy herds in Antioquia (Colombia)
Mario F Cerón-Mu?oz,Edwin J Agudelo,Juan G Maldonado-Estrada
Revista Colombiana de Ciencias Pecuarias , 2007,
Abstract: El objetivo del presente proyecto fue establecer relaciones entre la prueba de CMT y los recuentos de células somáticas individuales o en el tanque de la leche, con el objetivo de definir un modelo predictivo del número de células somáticas en el tanque y proponer un modelo para detectar fincas con mastitis subclínica. En dos fincas lecheras del Municipio de San Pedro de los Milagros (Colombia), se tomaron muestras de leche de las vacas en orde o (n = 95) durante los orde os de la ma ana y de la tarde (una muestra/mes/3 meses). En el orde o de la tarde se realizó prueba de CMT y en todos los muestreos se hizo recuento de células somáticas en el medidor individual (RCS), y en el tanque de la leche, usando un equipo Fossomatic 90. Para el análisis estadístico se realizó una transformación logarítmica de los datos (y = Log2(RCS/100) +3), para ajustarlos a la normalidad y realizar análisis de varianza. Los resultados mostraron una relación estadística significativa (p<0.05) entre el porcentaje de cuartos afectados por mastitis subclínica según la prueba de CMT y el BTSCC del orde o de la tarde. Además, se definió una fórmula predictiva para el BTSCC de acuerdo con el porcentaje de cuartos afectados para el orde o de la tarde. Los resultados indicaron un promedio de RCS de 206.630 cel/ml y 145.935 cel/ml para los orde os de la tarde y la ma ana, respectivamente; mientras que el BTSCC presentó un promedio de 186.830 cel/ml y 93.145 cel/ml, para los orde os de la tarde y la ma ana, respectivamente. Asimismo, se halló un relación estadística significativa (p<0.05) entre el RCS del orde o de la tarde con el BTSCC. Los resultados del BTSCC se encuentran por debajo de los valores límites permitidos en Europa y Estados Unidos, lo cual sugiere que bajo condiciones de manejo estrictas, las fincas lecheras en Antioquia pueden lograr los estándares internacionales de calidad para la exportación de leche. Estudios adicionales se requieren para precisar las variaciones en las relaciones entre los recuentos individuales y del tanque, hallados para los orde os de la ma ana y de la tarde. In order to establish a mathematical model with which to predict the Bull Tank Somatic Cell Count (BTSCC) of herds with sub clinical mastitis and to search for possible relationships between CMT results and individual somatic cell counts (SCC) or BTSCC, a descriptive study was carried out in two farms located in the dairy region of Antioquia (Colombia), in which lactating dairy cows (n = 95) were sampled during the morning and afternoon milking (once a month/3 months). CMT evaluation was pe
Falla ovárica en una yegua de paso fino colombiano: tratamiento combinado homeopático antihomotóxico y hormonal: Reporte de un caso
Otálvaro,Luis J; Correa,Claudia J; Velásquez,Carlos E; Maldonado-Estrada,Juan G;
Revista Colombiana de Ciencias Pecuarias , 2009,
Abstract: ovulation failure is one of the most frequent causes of infertility in mares. in the present case we report a six-year-old colombian paso fino maiden mare that was attended for breeding purposes with a previous history of ovulation failure. at ultrasound (us) examination of the reproductive tract and ovaries the left ovary measured 15 x 13 cm and a pathologic 13 x 11 cm diameter anecoic structure was diagnosed. the right ovary was found of normal size, and the uterus was found flacid. an anti homotoxic theraphy with ovarium compositum?, damiana injeel?, cerebrum compositum?, and phosphor hommacord? for 1? months and fk (neural) therapy (twice/15 days) were then established, the ovary size was reduced, and softening of the follicular wall and a slight uterine response were observed. after 1? month, the left ovary had 13 x 11 cm diameter and showed a 9 x 8 cm follicle, whereas the right ovary was multifollicular. serum progesterone, estradiol and testosterone levels were those characteristics of an anestrous mare. the mare was treated with hcg (3.000 ui, i.v./3 days) and 4 days later a corpus luteum was diagnosed by us in the left ovary and serum progesterone levels raised to 14.91 ng/dl. at day 7 after hcg treatment the mare was given pgf2α (9 μg/kg/for two days) intramuscular, estrous was evident 5 days later, and artificial insemination (ai) with fertile semen was practiced resulting in a viable pregnancy as evaluated by ultrasound at day 20; however, this pregnancy was lost at 40 days after ai. the mare returned to estrus 20 days later, she was then inseminated and the resulting pregnancy was confirmed at day 20th resulting in a successful gestation and foaling of a full term viable foal. this report suggests hormonal therapy and alternative medicine could be successfully combined for treatment of specific ovarian pathologies in mares.
Falla ovárica en una yegua de paso fino colombiano: tratamiento combinado homeopático antihomotóxico y hormonal: Reporte de un caso Fracasso ovário em uma égua de passo colombiano: manipula o homeopática antihomotoxica e hormonal combinada: Reporte de um caso Ovulation failure in a Colombian Paso fino Mare: A combined antihomotoxic homeopathic therapy and hormonal treatment: A case report
Luis J Otálvaro,Claudia J Correa,Carlos E Velásquez,Juan G Maldonado-Estrada
Revista Colombiana de Ciencias Pecuarias , 2009,
Abstract: La falla ovulatoria es una de las principales causas de infertilidad en yeguas cíclicas. En el presente caso, se describe el seguimiento de una yegua nulípara de paso fino colombiano de seis a os que ingresó a consulta para ser sometida a reproducción. Al examen ecográfico se le halló el ovario izquierdo de 15 x 13 cm con una estructura patológica de aspecto anecóico y contenido líquido de 13 x 11 cm, el ovario derecho sin estructuras y el útero flácido. La yegua fue sometida a tratamiento con antihomotóxicos del tipo Ovarium compositum , Damiana injeel , Cerebrum compositum , y Phosphor hommacord durante 1 mes, y terapia FK (terapia neural, dos en 15 días), lo cual disminuyó el tama o del folículo y del ovario, indujo ablandamiento de la pared folicular y leve respuesta uterina. Un mes y medio después, el ovario izquierdo tenía 13 x 11 cm y un folículo de 9 x 8 cm, y el ovario derecho estaba multifolicular. Las concentraciones de progesterona, estradiol y testosterona eran características de anestro. La yegua fue tratada con eCG (3.000 UI/3 días, i.v.), cuatro días después la progesterona ascendió a 14.91 ng/ dl, el examen ecográfico reveló un cuerpo lúteo en el ovario izquierdo y a los siete días fue tratada con PGF2α (9 μg/kg/2 días) intramuscular. Cinco días después la yegua presentó estro, fue inseminada y tuvo una gestación que perdió a los 40 días; luego presentó un nuevo estro a los 20 días, fue inseminada, se le confirmó gestación a los 20 días y tuvo una gestación a término con un potro viable al momento del parto. Este caso sugiere la posibilidad de combinar terapia hormonal con medicina alternativa para el tratamiento de algunos tipos de anormalidades en el funcionamiento ovárico en las yeguas. O fracasso ovulatório é uma das principais causas de infertilidade em éguas cíclicas. Neste caso, se descreveu o acompanhamento de uma égua nulípara da paso fino colombiano, de seis anos idade que consultou para serem sujeitos a reprodu o. No exame ultra-som que ele encontrou o ovário esquerdo, 15 x 13 cm, com uma estrutura patológica de 13 x 11 cm, o ovários direito sem estruturas e útero mau. A égua sofreu tratamento com drogas Ovarium compositum , Damiana injeel , Cerebrum compositum , e Phosphor hommacord durante 1 mês, FK terapêutica (terapia neural, duas em 15 dias), o que diminuiu o tamanho do folículo e do ovário, induzida amolecimento da parede uterina e leve resposta folicular. Um mês e meio depois, o ovário esquerdo tinha 13 x 11 cm e um folículo 9 x 8 cm, e do ovário direito foi multifolicular. As concentra es de progesterona, estradi
Gestación prolongada asociada con la prescripción inadecuada de medroxiprogesterona acetato: ?Es racional y ético el uso de progestágenos exógenos
González-Domínguez,María S; Maldonado-Estrada,Juan G;
Revista Colombiana de Ciencias Pecuarias , 2006,
Abstract: medroxiprogesterone acetate (mpa) has been commonly used as a contraceptive in bitches by its effect on preventing estrous presentation, instead of abundant evidence on undesirable collateral effects such as uterine and mammary tumors and nodules, cystic endometrial hyperplasia-pyometra complex, as well as acromegaly-like lesions. in this report a 6 year -old fox-terrier wire coat bitch is presented which was administered a depot mpa formulation in order to prevent an undesired mating-related pregnancy that was attended at the by a prolonged pregnancy at day 74 after the undesired mating. the patient showed distended abdomen, dyspnea, with no changes in hemoleukograms values, but with macerated fetuses as diagnosed by clinical and radiographic findings. an elective cesarean operation followed by ovary hysterectomy was performed. the patient showed an optimal clinical evolution. several aspects related to the use of mpa in canine reproduction, the recommendation to cautiously prescribe its use as contraceptive agents in bitches, as well as the consideration of other alternatives for management of undesired mating in dogs, are discussed.
Gestación prolongada asociada con la prescripción inadecuada de medroxiprogesterona acetato: Es racional y ético el uso de progestágenos exógenos Prolonged pregnancy associated to an inappropriate medroxiprogesterone acetate prescription in a bitch: Is rational and ethics the use of exogenous progestin in the bitch?
María S González-Domínguez,Juan G Maldonado-Estrada
Revista Colombiana de Ciencias Pecuarias , 2006,
Abstract: Los progestágenos sintéticos como la medroxiprogesterona acetato (MPA) y el proligestone (PRO) son usados en caninos como medicamento para prevenir la presentación del celo en perras, a pesar de existir abundante evidencia de su asociación con el aumento de la presentación de tumores mamarios y uterinos, complejo hiperplasia quística endometrial-piómetra y alteraciones de la hormona del crecimiento que cursan con acromegalia. En el presente estudio se informa de un caso de gestación prolongada asociada con la administración de MPA para prevenir la gestación después de una monta no deseada, en una perra de raza Fox terrier pelo de alambre de cinco a os de edad a quien se le prescribió de manera errónea MPA para la monta no deseada. La paciente se recibió a los 74 días postmonta, con abdomen distendido pero sin dificultad respiratoria ni cambios importantes en el hemoleucograma; el examen clínico y la radiografía revelaron la presencia de seis fetos en proceso de maceración; la paciente fue sometida a operación cesárea para la extracción de los fetos macerados seguida de ovariohisterectomía. La evolución clínica fue favorable. En la discusión se hacen unos planteamientos críticos sobre la racionalidad y la ética del uso de los progestágenos exógenos, al igual que de la aplicación de productos estrogénicos, para el control de eventos reproductivos en perras, como la monta no deseada o la supresión del celo, y se proponen otras alternativas terapéuticas. Medroxiprogesterone acetate (MPA) has been commonly used as a contraceptive in bitches by its effect on preventing estrous presentation, instead of abundant evidence on undesirable collateral effects such as uterine and mammary tumors and nodules, Cystic endometrial hyperplasia-pyometra complex, as well as acromegaly-like lesions. In this report a 6 year -old Fox-terrier wire coat bitch is presented which was administered a depot MPA formulation in order to prevent an undesired mating-related pregnancy that was attended at the by a prolonged pregnancy at day 74 after the undesired mating. The patient showed distended abdomen, dyspnea, with no changes in hemoleukograms values, but with macerated fetuses as diagnosed by clinical and radiographic findings. An elective cesarean operation followed by ovary hysterectomy was performed. The patient showed an optimal clinical evolution. Several aspects related to the use of MPA in canine reproduction, the recommendation to cautiously prescribe its use as contraceptive agents in bitches, as well as the consideration of other alternatives for management of undesired m
Protective compromise of great omentum in an asymptomatic uterine rupture in a bitch: a case report
González-Domínguez,María S; Hernández,Carlos A; Maldonado-Estrada,Juan G;
Revista Colombiana de Ciencias Pecuarias , 2010,
Abstract: the great omentum plays an important role in protecting the peritoneal cavity from bacteria and contaminating material and providing the peritoneum with leukocytes from the omental milky spots (oms). however, there are no reports on the existence of oms in dogs. in this report an unusual case of asymptomatic uterine rupture (ur) is described in a 16 month old pointer bitch that was admitted at the ces university veterinary clinic in medellin (colombia) for elective neutering. in the abdominal surgical plane, the great omentum was found sequestering abundant macerated fetal debris and uterine content released near the ruptured uterine wall. a severe congestive and brown-like appearance of peritoneum suggesting a protective inflammatory process was observed. all uterine contents, uterus and compromised great omentum were completely removed. the dog recovered satisfactorily with no clinical complications after a long term postsurgical period. additionally we discuss the existence of oms in the canine omentum.
Indización en SciELO y ascenso a la categoría A2 del Publindex
Juan Guillermo Maldonado Estrada
Revista Colombiana de Ciencias Pecuarias , 2007,
Abstract:
Exámenes ECAES, currículo y jóvenes investigadores
Juan Guillermo Maldonado Estrada
Revista Colombiana de Ciencias Pecuarias , 2007,
Abstract:
Indización en Thomson Reuters
Juan Guillermo Maldonado Estrada
Revista Colombiana de Ciencias Pecuarias , 2008,
Abstract:
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