Pancreatic lipase activity and utilization of dietary fat in young turkeys as affected by 17[beta]-estradiol dipropionate

The objectives of the research described in this dissertation were: (1) to develop an assay for determining pancreatic lipase activity in young turkeys by using a glycerol trioleate (GTO) emulsion as substrate and compare it with an assay that utilized a glycerol tributyrate (GTB) emulsion as substrate, (2) to determine pancreatic lipase activity in poults during the first weeks after hatching, (3) to evaluate the effect of 17[beta]-estradiol dipropionate (E[subscript] 2) on pancreatic lipase activity, and (4) to determine the retention of dietary fat as affected by E[subscript] 2 and the type of supplemental fat;Lipase activity (LA, [mu]moles of released fatty acids/min) was linear with both the amount of pancreas added into the medium and the time of incubation up to 20 min. LA was maximal at.5 [mu]moles or more of GTO in the medium. Thus, substrate did not affect the rate of the reaction. Specific lipase activity (SLA, LA per mg of pancreas protein) was consistently greater when determined with the GTO assay than with the GTB assay. Both assays gave results that were very highly correlated (R[superscript] 2 =.80) in 14-day-old poults, but not in 1-day-old poults (R[superscript] 2 =.52). The GTO assay method was recommended for determinations of pancreatic lipase in nutritional studies. SLA averaged 6, 14, and 20 [mu]moles oleic acid (OA)/min x mg of protein at 1, 5, 9, 14, and 21 days of age, respectively. SLA increased rapidly when poults started eating, remained constant until about 14 days, and then increased again by 21 days of age. Poults fed the diet with 10% tallow had greater SLA at 5 and 9 days but lower at 21 days of age than pouts fed the 10% soy-oil diet. Pancreas dry weight was always greater for tallow-fed-poults. Total lipase activity (TLA, [mu]moles OA/min) per pancreas was greater for tallow-fed poults at 5 and 9 days, but no difference occurred by 21 days of age. TLA averaged 100, 700, 1,400, 2,500, and 8,000 [mu]moles OA/min at 1, 5, 9, 14, and 21 days of age, respectively. Injection of 5.5 mg E[subscript] 2/mg of body weight (BW) increased SLA but undesirable side-effects occurred. Injection of.02 E[subscript] 2/mg BW did not have an important effect on SLA. Apparent fat retention averaged 85.3, 84.8, and 93.5% at 5, 9, and 21 days of age, respectively. A positive relationship was found between apparent fat retention and SLA (R[superscript] 2 =.92); however, lipase activity in the pancreas did not seem to be limiting fat retention from the diet in young turkeys

20 años de estudios para 600 de relaciones y constancias entre Irán e Hispania

El objeto de esta comunicación es hacer un resumen por los momentos clave de las relaciones diplomáticas entre España e Irán, y también enumerar y hacer balance de las consecuencias bibliográficas que estas tuvieron. Hay tres grandes momentos en estas relaciones: en el siglo XV, Enrique III de Castilla manda una embajada al Tamorlán encabezada por González de Clavijo, que de algún modo es un precedente de las embajadas posteriores a Irán. En el siglo XVII se produjo un intercambio diplomático entre ambos países que quizá no obtuvieron el objetivo político y militar previsto, pero sí una producción de textos absolutamente única y de una calidad altísima. Por último, una especie de rara avis, en el siglo XIX, la aventura diplomática de Adolfo Rivadeneyra en Irán dio como consecuencia un libro singular: Viaje al interior de Persia, como consecuencia de un año y medio de viajes y estudios por el país. Los contactos entre España e Irán han tenido siempre consecuencias bibliográficas sorprendentes, igual que lo son su estudio, novedad y sorpresas que siguen deparandoThe purpose of this communication is to summarize the key moments of diplomatic relations between Spain and Iran, and also enumerate and take stock of the bibliographic consequences they had. There are three great moments in these relationships: in the fifteenth century, Enrique III de Castilla sent an embassy to Tamorlán headed by González de Clavijo, which is somehow a precedent for later embassies to Iran. In the seventeenth century there was a diplomatic exchange between both countries that perhaps did not achieve the intended political and military objective, but yes an absolutely unique production of texts of a very high quality. Finally, a kind of rare avis, in the nineteenth century, the diplomatic adventure of Adolfo Rivadeneyra in Iran resulted in a unique book: Travel to the interior of Persia, as a result of a year and a half of travel and studies in the country. The contacts between Spain and Iran have always had surprising bibliographical consequences, as are their study, novelty and surprises that continue to hol

Aida, el Canal de Suez y su inauguración: Ópera en tres actos, epílogo y adenda

El 17 de noviembre de 1869 se inauguró el Canal de Suez en una ceremonia presidida por la emperatriz de los franceses, Eugenia de Montijo. Como parte de los fastos para celebrar tan magno acontecimiento, el jedive de Egipto había previsto también inaugurar el teatro de la ópera construido al efecto con una obra encargada a Verdi: Aida. Este estreno se retrasó dos años, y en el intervalo Francia había sido derrotada por el Imperio alemán y quedaba ya poco de aquel esplendor que había permitido imponer la construcción del canal pese a las reticencias británicas. La ópera y el canal permanecen, y los dos tienen aún hoy un papel importante. En esta comunicación se pretende, además de mostrar la gestación de ambas obras, reflexionar sobre el papel del historiador o del creador de una obra artística en la transmisión del pasado que se puede llevar a cabo por distintos interesesOn November 17, 1869 was inaugurated the Suez Canal in a ceremony presided by French Empress Eugenia de Montijo. As part of the pageantry to celebrate this great event, the Khedive of Egypt had also planned to inaugurate the opera house purposed built with a work commissioned to Verdi: Aida. This premiere was delayed two years, and in the interval France had been defeated by the German Empire and has already losed the splendor which had allowed imposing the canal construction despite British reluctance. The opera and the channel remain, and both have an important role even today. In this communication, in addition to show the gestation of both works, we want to reflect on the role of the historian or the creator of an artistic work in the transmission of the past that can be carried out by different interests intende

Adolfo Rivadeneyra: La diplomacia al servicio del redescubrimiento científico y vital de Oriente

Adolfo Rivadeneyra reconciled his job as diplomatic with the Near East's study of the time he was living (19th century) and his history. This work in the history of that lands run in a parallel way with the Orientalism, that was borning in Europe, and from what he was a pioneering and a introductory. His oriental studies, that were incorporated on his books, constitute the germ of this science in Spai