A5008098002- Sperm and Testicular Function
- Reproductive Biology and Fertility
- Reproductive Physiology in Livestock
- Genetic and phenotypic traits in livestock
- Reproductive biology and impacts on aquatic species
- Animal Genetics and Reproduction
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Effects of Environmental Stressors on Livestock
- Ovarian function and disorders
- Animal Behavior and Welfare Studies
- Animal Nutrition and Physiology
- Wildlife Ecology and Conservation
- Animal Behavior and Reproduction
- Meat and Animal Product Quality
- Circadian rhythm and melatonin
- Avian ecology and behavior
- Livestock and Poultry Management
- Veterinary Equine Medical Research
- Helminth infection and control
- Rabbits: Nutrition, Reproduction, Health
- Veterinary Medicine and Surgery
- Bird parasitology and diseases
- Reproductive Health and Technologies
- Insect and Arachnid Ecology and Behavior
- Viral Infections and Vectors
Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria
2015-2024
Institute of Agrifood Research and Technology
2017-2024
Consejo Superior de Investigaciones Científicas
2022-2024
Centro Regional de Selección y Reproducción Animal
2012-2021
Institute for Animal Reproduction
2020
Leibniz Institute for Zoo and Wildlife Research
2015
Ingenieria Y Economia Del Transporte
2004-2009
Hospital La Luz
2008
Instituto de Investigación en Recursos Cinegéticos
2006
Museo Nacional de Ciencias Naturales
2006
This review offers an overview of the basic characteristics in vivo embryo technologies, their current status, main findings and advances gained recent years, outstanding subjects for increasing efficiency. The use superovulation transfer procedures remains affected by a high variability ovulatory response to hormonal treatment low variable number transferable embryos offspring obtained. has been classically identified with both extrinsic (source, purity gonadotrophins protocol...
1 Sex differences in testosterone levels and sex-biased sensitivity to are the basis of some ideas postulated account for sex-linked environmental vulnerability during early life. However, sex variation circulating has been scarcely explored never manipulated at post-natal stages birds wild. 2 We measured experimentally increased nestling Eurasian kestrels Falco tinnunculus. investigated, possible sexual effect this hormone on growth (body mass tarsus length) cell-mediated immunity males...
A sperm cryopreservation protocol requiring dimethylacetamide (DMA, 6%) as a cryoprotectant was optimized via assays involving different prefreezing equilibration times (1, 10, 30, 60, and 120 min at 5°C) freezing rates achieved by the following: 1) using nitrogen vapor to reduce temperature from 5°C −85°C 10°C/min (slow rate); 2) biological freezer unit in 2-step method −35°C 7°C/min then −140°C 60°C/min (medium or 3) 1-step −180°C (rapid rate). Heterospermic semen samples chicken breeds...
The season may affect the values of fresh semen variables and therefore influence success cryopreservation. aim this study was to improve evaluation seasonal changes in quality Spanish Black Castellana roosters maintained under natural environmental conditions. Semen collected from 11 (housed photoperiod temperature conditions) by massage twice every month for 12 mo. In addition determining ejaculate volume, sperm concentration, motility (the classic variables), we used hypo-osmotic swelling...
Lead (Pb) poisoning via ingestion of shot pellets is a frequent cause death in wild birds and also has wide range subclinical effects. Here we report on the sublethal effects Pb exposure breeding performance red-legged partridges (Alectoris rufa). We studied sperm quality, reproductive success, egg properties, laying performance, antioxidant levels, carotenoid-based coloration. Birds were exposed by oral gavage to one or three No. 6 (2.8 mm diameter, mean mass ± SD: 109 7.97 mg). show that...
Seminal plasma is a key biological fluid that modulates sperm function in the reproduction process. However, its role biotechnologies scarce poultry. The aims of present study were to amino acids profile and total proteins seminal 12 Spanish chicken breeds investigate on cryoresistance rooster sperm. To cryoresistance, diluted pooled semen samples cryopreserved presence absence plasma. Glutamic acid was most abundant free plasma, followed by alanine, serine, valine, glycine. There an...
The present study aimed to evaluate an optimal method transport and store drone sperm samples, as well characterize spermatozoa through head morphometry. A total of 291 mature drones were used. We performed three experiments. In a first experiment, variables assessed under different incubation conditions (5 °C, 15 37 °C with 5% CO2). Results showed that viability was optimally maintained at (p ˂ 0.05). the second supplementation extender catalase (200 UI) improved 0.05) motility during...
The present study examines the ovulatory activity of wild and domesticated ewes subjected to either a constant photoperiod long days (16L:8D) or natural changes in daily for 16 mo. aim was determine whether an endogenous reproductive rhythm controls seasonal these sheep, how might affect this. effects long-day photoperiods on long-term prolactin melatonin secretion were also evaluated. two species showed under conditions, suggesting existence reproduction. This differently expressed types...
This work examines the effectiveness of a TCG (Tris, citric acid, glucose, 6% egg yolk and 5% glycerol) TEST (TES, Tris, sperm extender in freezing mouflon spermatozoa at slow cooling rates, using different pre-freezing equilibration times (2–3 hr). It also tolerance to concentrations cryoprotectants (5, 10, 20% glycerol; 5%, 10%, dimethyl sulfoxide; polyvinylpyrrolidone) and/or sucrose (100, 300, 500 mm). The highest quality (p < .01) thawed were obtained when an time 3 hr. Sperm motility...