Luis Alejandro Rodríguez Campos

Independent

That chapter aims to put together and analyze available scientific information about physicochemical composition, calculated energy values and productive response when carrot (Daucus carota) is used as an animal feed or suplement.

Mineral supplementation effects on body development and reproduction in bovine females. The present paper reviews recent information on the effects of oral and injectable mineral supplementation on body weight gain and body and reproductive development of bovine females. Although responses are variable, it seems to exist a favourable relationship b...

The aim of this study was to evaluate the effects of two mineral tonics on the zoometric measurements of heifers. The injected tonics differed in their effects on the morphology of animals: T2 induced higher values of PI and T3 did not significantly affect zoometric measures. There is a possibility to induce morphological changes in cattle using pa...

The aim of this work is to quantify the effect of an oral mineral supplement on the zoometric measurements of heifers. Mineral supplementation could induce changes in morphology in heifers, inducing wider hips, but although these differences could implicate easier calving, the existence differences disappear at ~18 months. No other variable registe...

The aim of this paper was to identify, in an exploratory way, the major features of identity and ideology of the emo subculture in San Jose, Costa Rica, in the year 2010. We conducted interviews with seven emo young and collected opinions in web forums. It could be found that these young people seek to express his inner world in accord with their f...

Introducción. La cerda moderna tiene la capacidad genética de producir un mayor número de lechones por camada y una mayor producción de leche, lo que conlleva que el animal tenga mayores requerimientos de nutrientes. Objetivo. Evaluar el desempeño productivo de las cerdas y su progenie a la suplementación de un producto comercial a base de extracto...

Essential Oils plus Organic Acids (EO+OA) compounds are proposed as an alternative to growth promoting antibiotics. The objective of this work was to evaluate the effects of supplementing a commercial formulation of EO+OA on productivity of lactating sows and their piglets in the Costa Rican dry tropics. Forty-two sows grouped in three evaluation p...

Cada día, el sector ovino nacional está en búsqueda de mejorar la calidad de carne producida; sin embargo, en esta industria del país no existe un sistema de clasificación estándar para las canales ovinas. El objetivo de este trabajo fue evaluar las características morfométricas de canales ovinas para generar una herramienta visual práctica que per...

Woody plants are essential in ruminant nutrition in semi-arid regions particularly during the long dry season, however, their nutritional value varies considerably among species, seasons and geographical zones. A study was conducted to evaluate the seasonal variation in chemical composition and in-vitro gas production of woody plant leaves and thei...

Woody plants are essential in ruminant nutrition in semi-arid regions particularly during the long dry season, however, their nutritional value varies considerably among species, seasons and geographical zones. A study was conducted to evaluate the seasonal variation in chemical composition and in-vitro gas production of woody plant leaves and thei...

Cribbing is a stereotypic oral behavior whereby the horse places its incisors on a fixed object, arches its neck, pulls against the object, and emits an audible grunt. Cribbing behavior (CB) has been associated with gastrointestinal (GI) dysfunction and gastric ulceration. This randomized crossover study tested the hypothesis that dietary inclusion...

La nutrición mineral es clave en la productividad del ganado bovino, por eso se han introducido al mercado costarricense productos orales y parenterales que prometen favorecer el crecimiento y desarrollo corporal. El objetivo del presente trabajo fue evaluar el efecto del uso de un suplemento mineral oral y dos inyectables en la ganancia diaria de...

El uso de semen de toros genéticamente seleccionados es ampliamente difundido en explotaciones lecheras, pero la gran cantidad de características por analizar puede hacer que la elección de un toro sea difícil. El presente trabajo buscó: 1) Determinar los factores subyacentes a las evaluaciones genéticas de toros lecheros. 2) Clasificar los toros e...