Zootecnia
Browse by
Recent Submissions
-
Know Your Community: Animal Agriculture and the Environment
(2020)The Animal Agriculture and the Environment (AAE) Community of ASA (Environmental Quality Section) brings together members of different backgrounds to understand how livestock operations have the potential to reduce their ... -
Evaluation of cervical and uterine size, at 4 weeks postpartum, as a predictor of subsequent fertility in Jersey cattle
(2020)Uterine and cervical size of Holstein dairy cows is reported among reasons for a decline in dairy cow fertility. Therefore, the objectives of this study were to (a) determine whether size of the cervix and uterus at 4 weeks ... -
Ovarian function and the establishment and maintenance of pregnancy in dairy cows with and without evidence of postpartum uterine disease
(2020)Uterine disease early postpartum reduces fertility during the breeding period. One potential mechanism involves the reduced functional capacity of the uterus to support pregnancy. A second potential mechanism involves ... -
Bacterias cultivables resistentes a oxitetraciclina durante el proceso de vermicompostaje de excretas bovinas
(2023-05-01)Introducción: A nivel mundial se han detectado bacterias con genes de resistencia al antibiótico oxitetraciclina en estiércol de vacas lecheras, sin embargo, es una práctica común utilizar este estiércol como fertilizante. ... -
Efecto de la inclusión de Musa sp. en la conservación de ensilajes de Trichanthera gigantea (Humb. & Bonpl.) Nees.
(2021)Objetivo: Evaluar el efecto de la inclusión de diferentes niveles de Musa sp. en la calidad nutricional y fermentativa de ensilajes de Trichanthera gigantea (Humb. & Bonpl.) Nees. Materiales y Métodos: Se utilizó un ... -
Biological indicators of animal welfare in rodents in the biological essay laboratory of the University of Costa Rica: Evaluation protocols
(2019)Animal welfare can be affected by many factors that compromise both physical and mental health, that is why the more objective relationships are provided, the greater the likelihood of identifying the state of well-being ... -
Silage quality and bacterial diversity of silages inoculated with Listeria monocytogenes and Lacticasseibacillus paracasei_6714
(2023-03-01)Introduction: King grass (Cenchrus purpureus (Schumach.) Morrone, syn. Pennisetum purpuphoides) and pineapple peel (Ananas comosus) silages are food alternatives for livestock in conditions of feed shortage. Objective: ... -
Incumplimiento en el contenido nutricional de alimentos importados para mascotas en Costa Rica
(2023-05-01)La normativa que regula los alimentos balanceados asegura el bienestar de las mascotas, la salud pública y la seguridad al consumidor, por lo que es valioso corroborar el contenido de los nutrimentos declarados en las ... -
Feeding and Nutrition of Anteaters
(2011-05-02)The superorder Xenarthra (former Edentata) is grouped into two orders, Cingulata (armadillos) and Pilosa (anteaters and sloths). These are special mammals that show unique traits: (1) the existence of secondary articulations ... -
Impact of oestrus synchronization devices on ewes vaginal microbiota and artificial insemination outcome
(2023-03-23)Introduction: The low pregnancy rate by artificial insemination in sheep represents a fundamental challenge for breeding programs. In this species, oestrus synchronization is carried out by manipulating hormonal regimens ... -
Genealogical information analysis of Gyr and Nelore cattle from Costa Rica
(2023-03)The objectives were to analyze the genealogical information of Gyr (GY) and Nelore (NL) cattle from Costa Rica. Analyzed: pedigree integrity (GY, 13272; NL, 18153); number of complete, maximum traced and equivalent complete ... -
Seminario de producción pecuaria
(2018)Una obra de apoyo para el docente y una guía para el estudiante de agroindustria sobre la obtención de los productos de origen animal, su situación actual y su marco legal, centrada en la producción de especies de interés ... -
Respuesta productiva de conejos alimentados con follaje fresco de nacedero (Trichanthera gigantea, Lamiales:Acanthaceae)
(2014-09-03)La producción de carne de conejo es una alternativa viable en Costa Rica, ofreciendo al consumidor un producto de buena calidad, y a los productores posibilidad de aumentar sus ingresos. Se evaluaron los rendimientos ... -
No longer a leap in the dark: the importance of protein as an energy source in amphibians
(2019-09-18)Amphibian nutrition has been highlighted as one of the disciplines requiring more investigation to support ex situ conservation programs. Specifically, anuran metabolism related to dietary nutrients is not yet investigated ... -
Effect of dietary carotenoids on vitamin A status and skin pigmentation in false tomato frogs (Dyscophus guineti)
(2014-09-29)Several species in captivity develop nutritional diseases including vitamin A deficiency; cases of this disease have been documented in amphibians, which may be linked to an insectivorous diet lacking in vitamin A or ... -
Gaining insights in the nutritional metabolism of amphibians: analyzing body nutrient profiles of the African clawed frog, Xenopus laevis
(2019-08-07)Whole bodies of Xenopus laevis (n = 19) were analysed for chemical composition and morphometrics. The nutrient profile (macronutrients, amino acids, fatty acids and minerals) was evaluated by sex; interactions among ... -
The interplay between voluntary food intake, dietary carbohydrate-lipid ratio and nutrient metabolism in an amphibian, (Xenopus laevis)
(2018-12-07)Digestion of food and metabolism of frogs are little studied at the moment, and such processes could be very particular in the case of amphibians, given their ectothermic and carnivorous nature which may lead them to use ... -
Colouration in amphibians as a reflection of nutritional status: The case of tree frogs in Costa Rica
(2017-08-24)Colouration has been considered a cue for mating success in many species; ornaments in males often are related to carotenoid mobilization towards feathers and/or skin and can signal general health and nutrition status. ... -
Porcentaje de captura de Sigmodon hirsutus en el ingenio El Palmar, Puntarenas, Costa Rica
(2016)Porcentaje de captura de Sigmodon hirsutus en el Ingenio El Palmar, Puntarenas, Costa Rica. El objetivo de este trabajo fue determinar el porcentaje y distribución de captura de la rata cañera (Sigmodon ... -
Respuesta del pasto alpiste (Phalaris arundinacea L.) a la fertilización nitrogenada en Costa Rica
(2016)El nitrógeno es el nutriente de mayor importancia en la producción de pasturas y las dosis de fertilización utilizadas deben optimizar la producción de biomasa de alto valor nutricional con un bajo costo y generando la ...
RSS 1.0