An accurate timing of parturition is very useful for managing canine parturition. It is generally accepted that parturition in bitches occurs between 64 and 66 days after the luteinizing hormone peak. In this retrospective study, we determined pregnancy length in different breeds and its influencing factors dating it from the estimated day of ovulation (EDO), defined as the day when peripheral plasma level of progesterone (P4) reaches 6 ng/ml. From January 2001 to December 2006, 162 pregnancies in 151 bitches of 53 different breeds were followed. Different parameters concerning the bitch, the litter, the type of semen and the type of reproduction were studied. The mean estimated pregnancy length in the bitch from EDO to parturition was 63.1±2.1 days. The main influencing factors for the pregnancies studied were the breed, the size of the bitch and the number of puppies within the litter.
As a mechanism for social participation and integration and for the purpose of building their identity, teens make and share videos on platforms such as YouTube of which they are also content consumers. The vulnerability conditions that occur and the risks to which adolescents are exposed, both as creators and consumers of videos, are the focus of this study. The methodology used is content analysis, applied to 400 videos. This research has worked with manifest variables (such as the scene) and latent variables (such as genre or structure). The results show that there are notable differences in style among the videos according to the producer of the message, and indicate that the most consumed videos are located around four thematic axes (sex, bullying, pregnancy and drugs) and that the referents as audiovisual content creators are the YouTubers. Everything points to problems in using the same language, including audiovisual language, as adolescents. This paper provides evidences of the convenience of using their codes so that this sector of the population see risks and conditions of vulnerability that they seem not to perceive according to their audiovisual creations in which they do not protect their identity, among other features.
Como un mecanismo de participación e integración social y con el propósito de construir su identidad, los adolescentes realizan y comparten vídeos en plataformas como YouTube, de la que también son consumidores de contenido. Las condiciones de vulnerabilidad que tienen lugar y los riesgos a los que se exponen los adolescentes, tanto como creadores como consumidores de vídeos, son el objeto central de este estudio. La metodología utilizada es el análisis de contenido, aplicado a 400 vídeos. Se ha trabajado con variables manifiestas (como el escenario) y latentes (como el género o la estructura). Los resultados muestran unas notables diferencias de estilo entre los vídeos a tenor del productor del mensaje e indican que los vídeos más consumidos se sitúan alrededor de cuatro ejes temáticos (sexo, acoso, embarazo y drogas) y que los referentes como creadores de contenido audiovisual son los «youtubers». Todo apunta a la existencia de problemas a la hora de utilizar el lenguaje, también audiovisual, de los adolescentes. Este trabajo proporciona evidencias de la conveniencia de emplear sus códigos para que este sector de la población se percate de los riesgos y de las condiciones de vulnerabilidad que parecen no percibir según sus creaciones audiovisuales, en las que, entre otras características, no protegen su identidad.
This research, which focuses on some aspects that link the digital life of university students and their civic, political and social involvement, aims to determine the level of engagement of young people in association-related actions or institutions through digital networks. Additionally, this paper attempts to specify the relationship between the level of social/political participation of this sector of the population and the interest of its members in the social media profiles of civically engaged subjects or organizations. It also looks at differences in access and interactivity in profiles with social and/or participatory interest between young people with some degree of civic commitment and those who are not involved any associations. While the data obtained through a convenience sample support, once again, youth disaffection towards institutionalized politics, the high intensity of digital access among all young people is confirmed, which a priori increases the possibilities of making civil society stronger. However, the intensive use of social networks by young people is not positively associated with a greater degree of civic involve-* This study was conducted in the framework of the project entitled "Redes sociales, adolescentes y jóvenes: convergencia de medios y cultura digital" (CSO2016-74980-C2-2-R) funded by the Spanish Ministry of the Economy, Industry and Competitiveness (2017-2020).
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