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Article
Effect of gender on aggression-influencing properties of swine urine.
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Year: 1981

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Abstract

Keywords

Aggression. --- Behavior. --- Gender. --- Pheromones. --- Pig. --- Swine. --- Urine.


Article
Jozef Cantré beitelt de socialistische man en vrouw in het Anseelemonument

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Debating sex and gender in eighteenth-century Spain : the invention of the sexes
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ISBN: 9781108524629 1108524621 9781107159556 1107159555 9781108814218 9781316671689 1108515681 1108506747 1108514197 110851717X 1316671682 1108518664 1108814212 Year: 2017 Publisher: Cambridge : Cambridge University Press,

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Eighteenth-century debates continue to set the terms of modern day discussions on how 'nature and nurture' shape sex and gender. Current dialogues - from the tension between 'real' and 'ideal' bodies, to how nature and society shape sexual difference - date back to the early modern period. Debating Sex and Gender is an innovative study of the creation of a two-sex model of human sexuality based on different genitalia within Spain, reflecting the enlightened quest to promote social reproduction and stability. Drawing on primary sources such as medical treatises and legal literature, Vicente traces the lives of individuals whose ambiguous sex and gender made them examples for physicians, legislators and educators for how nature, family upbringing, education, and the social environment shaped an individual's sex. This book brings together insights from the histories of sexuality, medicine and the law to shed new light on this timely and important field of study.


Article
A behaviour test on German Shepherd dogs: heritability of seven different traits.

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In this study, genetic and non-genetic effects on behavioural traits were estimated, based on records of the field behaviour test of the Swiss German Shepherd Dog breeding club. This standardized test has been applied since 1949 and comprised the following seven traits: self-confidence, nerve stability, temperament, hardness, sharpness, defence drive and fighting drive. The analyses were based on the test results of 3497 German Shepherds between 1978 and 2000. Gender, age, judge and kennel had significant effects on all behaviour traits. The heritabilities were calculated using three different methods and ranged between 0.09 and 0.24, with a standard error varying between 0.04 and 0.06. Phenotypic correlations among the traits lay between 0.28 and 0.94, the genetic correlations between 0.34 and 1.0. No significant correlations between hip dysplasia scores and the behavioural traits were found (-0.04 to 0.01). The modest genetic improvement over the last 25 years in the studbook population of the German Shepherd dog (GSD) was due to the low heritabilities of the behaviour traits, but mainly because of the low selection intensities after the test (only 8% failed). Some recommendations were made to improve the test and selection response.


Article
Intrauterine Position Effects on Sexually Dimorphic Asymmetries of Mongolian Gerbils - Testosterone, Eye Opening, and Paw Preference.
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Year: 1993

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A series of experiments was undertaken to both discover and explore the causes of sexually dimorphic phenotypic asymmetries in infant and adult Mongolian gerbils. We found that (1) the order in which the eyes of individual gerbil pups opened varied with their gender; right eves of female pups opened before left eyes, while left eyes of male pups opened before right eves, and (2) the paw that adult gerbils held in the air while maintaining a species-typical tripedal stance varied with gender: female gerbils held their right paws in the air significantly more often than did male gerbils. Both order of eye opening and laterality of paw use while in a tripedal stance varied significantly as a function of the intrauterine position which subjects had occupied as fetuses. These data implicate exposure to testosterone as a mediator of the development of asymmetries exhibited by Mongolian gerbils


Article
Age- and gender-related changes in copper and zinc levels in the plasma of Mongolian gerbils.

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Zinc and copper are components of many enzymes. Little information exists on the levels of trace elements in the plasma of the Mongolian gerbil (Meriones unguiculatus). We studied the age- and gender-related differences in the plasma Zn and Cu levels of healthy Mongolian gerbils. The 30 male and 30 female animals were allocated into three age groups (group A, 90 days old; group B, 180 days old; and group C, 360 days old), with 10 animals of each gender per group. They were housed under standard conditions with free access to pelleted rodent-maintenance diet (Zn, 95 mg/kg; Cu, 30 mg/kg). and water (Zn, undetectable; Cu, < 0.45 mg/liter). Overall, plasma Cu levels (mean +/- standard deviation) were significantly higher in female (2.03 +/- 0.41 &mu;g/ml) than male (1.30 +/- 0.28 &mu;g/ml; P < 0.0001) gerbils. Among the male rodents, those in group B had the lowest Cu levels, whereas. among the females, the lowest values were in group A. In contrast, plasma Zn levels did not differ between genders (males, 2.96 +/- 0.43 mug/ml; females, 2.96 +/- 0.38 mug/ml) or age groups. In general, plasma Cu and Zn levels were higher in gerbils than rats. We conclude that gerbils may be an interesting model for studying the metabolism of these. trace elements


Article
A case series of biting dogs: characteristics of the dogs, their behaviour, and their victims.

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The characteristics of 227 biting dogs, their homes, and their victims were gathered in a detailed telephone survey of general veterinary clientele in the Canadian provinces of New Brunswick, Nova Scotia, and Prince Edward Island. All of the dogs had bitten either someone living in the same household, or someone who was a frequent visitor and was well known to the dog. There were 117 male and 110 female dogs included in this case series. Significantly more female dogs were neutered (P=0.03), 58% of the dogs were purebred, and the most commonly reported breed was the Labrador Retriever (n=15). The mean number of people living in each home was 3.13 (S.D.±0.08). Aggression which would traditionally be defined as dominant or possessive had been demonstrated by 75.6% of the dogs in at least one of 17 specific situations outlined in the questionnaire. Dogs with a history of this type of aggression were significantly older (P=0.02) and of lower body weight (P<0.001) when compared to the remainder of the dogs, and were more likely to be fearful of a variety of stimuli. The effect of fear in these dogs may be important in understanding the motivation for and treatment of aggression problems. For what the owner considered to be the worst bite incident, 42.4% could be attributed to behaviour which appeared to be characteristic of dominant or possessive aggression. If the reason for the worst bite incident was related to the commonly accepted criteria for dominance aggression, then the dogs were more often male and purebred. Owners of these dogs were also more likely to rank the bite as a more serious event (P=0.001). Adults were the most common victims of dog bites, and most injuries were to the hands and arms (56.2%). A minority of injuries (9.3%) received medical attention, supporting previous evidence that dog bites are greatly underreported. A bite requiring medical attention was scored as a more important incident by the owner and was more likely to have caused the ow


Article
Aggressive conflicts amongst dogs and factors affecting them.
Authors: ---
Year: 1997

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Over one year, 206 dog owners were questioned in a veterinary clinic. The survey included two groups: 151 owners who visited the clinic because of an injury to their dog caused by another dog and 55 people who owned dogs that caused injuries to others. The questioning served to compare aggressors and victims of dog fights. The form contained 43 questions concerning the dog, the owner, and the incident of intraspecific aggression.The results reveal that both groups, victim and aggressor, showed regularities regarding the breeds, gender, and process of the fight. Important factors include housing conditions, criteria concerning the selection of a dog, and the dog's training. Significant differences were found comparing the owners of aggressors and their victims, including the owner's gender, profession, age, his/her attitude towards dogs, the selection of a specific breed, training methods, the purpose of keeping a dog, and previous experiences owning a dog.Further conclusions were drawn regarding the time and location of the incidents. Their influence on a potential solution to the problem caused by aggressive dogs is discussed


Article
An analysis of reported dog bites: Reporting issues and the impact of unowned animals.
Authors: ---
Year: 2000

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The authors investigated the epidemiology of dog bites in a large city by analyzing dog bite data from the period 1995 through 1997, The following data pertaining to victims sere studied: gender, race, age, residing health district, exposure date, reporting date, duration between exposure and reporting (lag time), reporting agency hospitalization, treatment, and location of bite. Data pertaining to the dogs-breed and ownership status-also were considered. Male victim bite rates increased 21 percent over the three-par period, possibly because of an increase in stray dogs. Medical centers reported the majority of bites (58 to 68 percent). The mean lag time for the period ranged From 4.4 to 5.6 days, During 1997, the lag time was lower For owned dogs (4.0 days) than for stray dog (5.2 days) (p <.001). Lag time in 1997 also was lower for victims five to nine years of age (4.1 days) than for victims 15 to 19 years of age (6.3 days) (p=.006), Dog bites continue to increase dramatically The investigators identified several reporting characteristics to which attention should be paid so that dog bites can be reduced, along with the public health ha:ards they present

Keywords

Age. --- Analysis. --- Animal. --- Animals. --- Attention. --- Bite. --- Bites. --- Children. --- City. --- Dog bite. --- Dog bites. --- Dog. --- Dogs. --- Duration. --- Emergency. --- Exposure. --- Floor. --- Gender. --- Health. --- Increase. --- Injuries. --- Male. --- Prevention. --- Stray dogs. --- Time. --- Treatment.


Article
Behaviour test for eight-week old puppies - heritabilities of tested behaviour traits and its correspondence to later behaviour.
Authors: ---
Year: 1998

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In order to test if adult behaviour could be predicted at eight weeks of age, 630 German shepherd puppies were tested. All dogs were also tested at 450-600 days of age according to regimen used to select service dogs. Significant gender differences were found in 3 of the 10 score groups of the puppy test. There were also significant correlations between the puppy test score groups. Correspondence of puppy test results to performance at adult age was negligible and the puppy test was therefore not found useful in predicting adult suitability for service dog work. Heritability was medium high or high for behaviour characteristics of the score groups in the puppy test. Maternal effects on the puppy test results were found when comparing estimations based on sire and dam variances. It also suggests that maternal effects are more likely to be seen in juvenile than in adult behaviour. (C) 1998 Elsevier Science B.V. All rights reserved

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