74 research outputs found
Recommended from our members
Characterization and cloning of a cDNA encoding an adipocyte-specific membrane protein
The accumulation of excessive fat is a serious concern in both
the livestock production and human health fields. Obesity is a
condition of excessive energy storage in the form of body fat
( triacylglycerols ). The cellular basis for obesity is not yet
understood but numerous factors have been suggested. Genetic
factors and altered metabolism may be two cellular parameters
that contribute to the excessive accumulation of fat. Adipocytes
are responsive to extracellular signals, which have a dramatic
effect on their metabolism implying that these metabolic
responses may be the result of differences in the composition or
responsiveness of adipocyte receptors.
The purpose of this research was to identify adipocyte specific
marker proteins and to determine if there are any
differences in the expression of these proteins that may be
associated with the conditions of genetic obesity or leanness.
Identification of adipocyte-specific markers should allow for a
better understanding of adipocyte growth and development and
determination of the adipocytes role in energy metabolism. A
hybridoma line was produced which secreted a monoclonal
antibody (LA-1) directed against a novel 64-kD protein unique to
porcine adipocyte plasma membranes, having an undetermined
function in the unique physiology of the adipocyte. This protein
was found to be expressed in genetically lean adipocytes but not
adipocytes derived from genetically obese sources. In order to
elucidate the role of this unique adipocyte-specific plasma
membrane protein, a porcine adipocyte eDNA library was
produced. This library was screened with LA-1 and a eDNA clone
isolated. This eDNA clone was used to study the expression of the
gene responsible for this unique protein at the nucleic acid level.
Northern blot analysis revealed a 5000- and a 7000-base pair
species of poly (A+) RNA present in total RNA isolated from
contemporary porcine adipose tissue. Determination of the nucleic
acid sequence of the eDNA clone should allow for the
determination of the actual identity and possible function of this
adipocyte-specific protein and the possible role it may serve in
regulating adipocyte growth and development
Rapid communication: Thirty-eight polymorphic microsatellite markers for mapping in rainbow trout.
Supplementing feedlot steers and heifers with Zilmax increases proportions of strip loin, chuck clod, and top sirloin steaks exceeding Warner-Bratzler shear force thresholds, whereas aging moderates this effect
Ractopamine hydrochloride (Elanco, Greenfield, IN) and Zilmax (zilpaterol hydrochloride; Intervet/Schering-Plough, Millsboro, DE) are β-adrenergic agonists approved in the United States and several other countries to increase growth rate, improve efficiency of feed utilization, and increase carcass meat yield. Zilmax has been shown to improve feed efficiency by 26% and increase hot carcass weight, longissimus muscle area, and meat yield. However, a few studies have shown that Zilmax significantly increased Warner-Bratzler shear force values (decreased tenderness). The objectives of our research were to determine the effects of supplementing feedlot diets of steers and heifers with Zilmax for 0, 20, 30, or 40 days before harvest and the subsequent effects of 7, 14, and 21 days of aging on tenderness of steer and heifer Longissimus lumborum (from strip loins) and heifer Triceps brachii (from chuck clods) and Gluteus medius (from top sirloin butts) muscles
Effects of feeding zilpaterol hydrochloride for twenty to forty days on carcass cutability and subprimal yield of calf-fed Holstein steers
El presente trabajo de investigación se realizó con el propósito de Determinar la relación de los estilos de aprendizaje en el rendimiento académico- área de Ingles- en estudiantes de cuarto grado de secundaria del C.P.M. "San Pedro Chanel", Sullana- Piura, 2017.
Para el desarrollo de la investigación se utilizó un diseño Correlacional, No Experimental Transversal, así como una población de 1700 estudiantes del nivel secundaria y una muestra No probabilística de 36 estudiantes de cuarto grado de secundaria del aula ?B?. Para la recopilación de la información se utilizó como técnica a la encuesta y como instrumento un cuestionario con escala valorativa referido a la variable Estilos de aprendizaje y para la variables Rendimiento académico se utilizó como técnica al análisis documental y como instrumento una ficha de análisis documental. La información recopilada se registró y procesó utilizando el programa SPSS V19, a partir de lo cual se presentan los resultados en tablas, así como también se realizó el análisis correlacional a través del coeficiente de Pearson.
Según los resultados obtenidos existe relación moderada entre las dimensiones estilo de aprendizaje activo y estilo de aprendizaje pragmático en el rendimiento académico en los estudiantes con un coeficiente de Pearson de (0.480 y 0.561); existe relación alta entre el estilo de aprendizaje reflexivo y el rendimiento académico en los estudiantes con un coeficiente de Pearson de (0.634) y existe relación baja entre el estilo de aprendizaje teórico y el rendimiento académico en los estudiantes con un coeficiente de Pearson de (0.382).Tesi
Effects of feeding zilpaterol hydrochloride for twenty to forty days on carcass cutability and subprimal yield of calf-fed Holstein steers
- …