Welfare problems, such as hunger, frustration, aggression, and abnormal sexual behavior, are commonly found in broiler breeder production. To prevent or reduce these welfare problems, it has been suggested to provide stimulating enriched environments. We review the effect of the different types of environmental enrichment for broiler breeders, which have been described in the scientific literat...

Fourteen Boer (75%) x Spanish wether goats (51 ± 1.8 kg BW and 23 mo of age) were used to determine effects of a moderate degree of nutrient restriction on heat production (HP). The experiment consisted of a 26-d period (P1) followed by one of 46 d (P2). Wethers were fasted on the final 4 d of each period, with gas exchange measured on the last 2 d. Fasting was preceded by collection of feces a...

This article reviews basic principles of animal learning and their potential contribution to the adaptation of user interfaces. The principles of classical conditioning, as well as a model that predicts most of the conditioning phenomena, are exposed. This paradigm has been widely studied in ®elds like Psychology, Biology and Computational Neuroscience, since the properties for stimuli associat...

Background: Drug abuse is one of the important variables influencing protective sexual behavior. The objective of this study was to explore how risky sexual behaviors develop in drug abusing women using human ecological theory.Methods: In this study, we used a descriptive exploratory approach. The participants were 32 drug abusing women from two of the selected drop-in centers (DICs) in south T...

A survey of the sexual behavior of 89 adults with autism living in group homes in North Carolina found that the majority of individuals were engaging in some form of sexual behavior. Masturbation was the most common sexual behavior. However, personoriented sexual behaviors with obvious signs of arousal were also present in one third of the sample. The relationship between sexual behavior and de...

Some researchers have reported that when parents are the main source of sex education, their adolescent chilaren are less likely to engage in premarital sexual activity and are more likely to use effective contraception. This study used the variables of gender and parental sexual attitudes (liberal or conservative) to categorize 349 college students and one of their parents into four groups. Th...

Disgust operates in many domains of behavior. On the presumption that facets of this emotion evince adaptive design, we conducted a cross-sectional study of 307 women, investigating changes in disgust sensitivity across the menstrual cycle. Two hypotheses were tested, namely (i) sexual disgust is an adaptation that serves to reduce participation in biologically suboptimal sexual behaviors, and ...

BACKGROUND Oxytocin (OT) is a hormone shown to be involved in social bonding in animal models. Intranasal OT is currently in clinical trials for use in disorders such as autism and schizophrenia. We examined long-term effects of intranasal OT given developmentally in the prairie vole (Microtus ochrogaster), a socially monogamous rodent, often used as an animal model to screen drugs that have th...