Results 11 to 20 of about 915 (114)

El contrato de donación de gametos y preembriones en la legislación española sobre técnicas de reproducción humana asistida

open access: yesCadernos Ibero-Americanos de Direito Sanitário, 2013
El progreso experimentado en las ciencias de la vida y de la medicina impulsado por los modernos avances y descubrimientos científicos y tecnológicos ha propiciado el desarrollo de las técnicas de reproducción humana asistida como una solución al ...
Ángela Ruiz Sáenz
doaj   +3 more sources

Application of ultrasound technique to evaluate the testicular function and its correlation to the sperm quality after different collection frequency in rams

open access: yesFrontiers in Veterinary Science, 2022
The frequency of semen collection is a crucial factor to consider in the rams performance inside breeding centers workout. To evaluate this factor, ram Breeding Soundness Evaluation could include sperm quality evaluation and new predictive and non ...
Rafael Montes-Garrido   +19 more
doaj   +1 more source

MASTREE+: Time‐series of plant reproductive effort from six continents

open access: yesGlobal Change Biology, Volume 28, Issue 9, Page 3066-3082, May 2022., 2022
MASTREE+ is an open‐access data set that collates reproductive time‐series data from across the globe. It includes 73,828 georeferenced observations of annual reproduction (e.g. seed and fruit counts) in perennial plant populations, consisting of 5,971 population‐level time‐series from 974 species.
Andrew Hacket‐Pain   +90 more
wiley   +1 more source

Biometric conversion factors as a unifying platform for comparative assessment of invasive freshwater bivalves

open access: yesJournal of Applied Ecology, Volume 58, Issue 9, Page 1945-1956, September 2021., 2021
Our derived biomass prediction equations can be used to rapidly estimate the biologically active biomass of the assessed species, based on simpler biomass or body size measurements for a wide range of situations globally. This allows for the calculation of approximate average indicators that, when combined with density data, can be used to estimate ...
Neil E. Coughlan   +40 more
wiley   +1 more source

Experimental admixture among geographically disjunct populations of an invasive plant yields a global mosaic of reproductive incompatibility and heterosis

open access: yesJournal of Ecology, Volume 109, Issue 5, Page 2152-2162, May 2021., 2021
Biogeographic patterns of variation in reproductive success in an invasive weed with allopatric distribution. Abstract Invasive species have the ability to rapidly adapt in the new regions where they are introduced. Classic evolutionary theory predicts that the accumulation of genetic differences over time in allopatric isolation may lead to ...
Ramona E. Irimia   +10 more
wiley   +1 more source

Use of Androcoll-ETM to Separate Frozen-Thawed Llama Sperm From Seminal Plasma and Diluent

open access: yesFrontiers in Veterinary Science, 2021
It is not easy to separate frozen-thawed South American camelid sperm from seminal plasma (SP) and diluents to be used for in vitro embryo production. The objective of this study was to evaluate Androcoll-E™ (AE) efficiency to separate llama sperm from ...
Crissthel Yverlin Guillén Palomino   +9 more
doaj   +1 more source

Influencia del índice de masa corporal en las técnicas de reproducción asistida

open access: yesEnfermería Global, 2023
Objetivo: Analizar la relación entre el índice de Masa Corporal en mujeres y los resultados obtenidos en las técnicas de reproducción asistida. Método: Se llevó a cabo un diseño no experimental, transversal, descriptivo y correlacional, mediante un ...
María Viera Molina   +2 more
doaj   +1 more source

Reflexiones sobre la explotación de la capacidad reproductiva de las mujeres (maternidad subrogada)

open access: yesBoletín Mexicano de Derecho Comparado, 2023
A partir de un repaso a la historia reciente sobre los acuerdos internacionales en materia de población, derechos humanos de las mujeres y de las infancias, se reflexiona sobre el impacto que las técnicas de reproducción conocidas como gestación o ...
Alicia Elena Pérez Duarte y Noroña
doaj   +1 more source

Associations of somatic cell count with milk yield and reproductive performance in grazing dairy cows

open access: yesJournal of Dairy Science, 2022
: Poor udder health status can have a detrimental effect on milk yield and reproductive performance, leading to reductions in the dairy farm profit. The objective of this retrospective longitudinal study was to assess the associations of somatic cell ...
R. Rearte   +4 more
doaj   +1 more source

Development of a GnRH-PGF2α Based Synchronization and Superstimulation Protocol for Fixed-Time Mating in Llama Embryo Donors

open access: yesFrontiers in Veterinary Science, 2020
The aim of the present study was to evaluate the application of a GnRH-PGF2α based synchronization and superstimulation protocol for fixed-time natural mating in llama embryo donors.
Enzo German Zampini   +10 more
doaj   +1 more source

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