Books on the topic 'Gender-specific differences'

Despite a roughly equal number of men and women in the general population, women consistently have lower rates of incarceration than their male peers. The difference is not trivial; there are 10 men incarcerated for each woman in the United States. The correctional system was confronted with issues specific to female inmates in part as a product of the War on Drugs from the mid-1980s to the mid-1990s. During this period, the number of women incarcerated rose 888%. The bulk of this rise was attributable to arrests for non-violent drug related charges. As the correctional system began to experience an influx of women, it became clear that they were different from their male peers. The differences included epidemiology of psychiatric disorders, intensity of health service utilization, social stressors, and patterns of offending. The logical question arose as to whether women needed a different treatment approach in the correctional system than men. The term ‘gender responsive programming’ emerged and represented the idea that women have specific needs distinct from male peers that could best be met with treatment designed for women. The purpose of this chapter is to describe, given the current knowledge base: the patterns of offending and arrests for women versus men; the socio-demographics of incarcerated women; the psychopathology exhibited by incarcerated women; and finally, how best to treat incarcerated women and implement this treatment within jails and prisons.

This chapter provides an overview of emerging adults’ views on gender and gender roles. The authors describe their findings regarding who emerging adults believe benefits more from marriage, men or women. Little consensus seemed to exist regarding how emerging adults viewed the connection between gender and marriage; the authors propose that this is a reflection of our current culture, which continues to move toward gender neutrality and the dismissal of gender differences. The authors also explore how emerging adults believe gender roles will play out in their own marriages. A specific paradox whereby emerging adults aspire to an egalitarian role balance yet tend to end up in traditional gender roles is discussed.

Body dysmorphic disorder (BDD) in females and males appears to have more similarities than differences; however, gender-related factors appear to influence some aspects of BDD’s clinical expression and prevalence. In epidemiologic studies, BDD is slightly more common in females than in males, but in clinical samples and samples of convenience, the gender ratio is more variable. Gender seems to influence some specific body parts of concern (e.g., men are more likely to be concerned about their genitals, women their breasts and legs). Women appear more likely than men to use certain camouflaging techniques and to pick their skin in response to skin concerns. Differences in comorbidity have also been reported, with substance use disorders more common in males and eating disorders more common in females. Men and women are equally likely to seek cosmetic treatment for BDD, which differs from the general population, but women are more likely to receive it. The possible influence of gender on treatment response deserves further research.

The book provides a systematic scientific overview of gender mainstreaming in Europe. It recalls the main steps of the origins and the development of the European gender mainstreaming (GM) strategy. The book also connects this framework with the current situation of gender equality and explores the strength and weak points of the strategy. To do so, it provides a critical evaluation of the instruments used to measure gender equality and explores how societal aspects, such as the opportunity structure defined by work-family balance policies and practices, affect the individual values of gender equality supporting the development of gender egalitarian cultures. Further, it develops an outline of the current and future challenges of the gender mainstreaming strategy, that run in parallel with the general European Union’s challenges, such as the integration process, economic crisis, migration and refugees crisis, and the rise of right-wing Euroscepticism. In addition, the old but always current problem of conceptualizing gender equality in different ways leading to jeopardized results. The book offers a critical review of the GM strategy in Europe and analyses whether and how gender equality in Europe is improving, with a specific interest in the cultural differences between the European countries where this common strategy is implemented.

Women’s Neurology details how to best care for women with neurological disorders. It can be challenging for physicians to stay on top of the latest research about how sex and gender affect the course of specific diseases, medication effects, and best neurological care. The book’s raison d’être is therefore to heighten caregivers’ awareness about the gender differences in neurological care. It spans the neurological issues that occur at different portions of women’s lives, including reproductive health, pregnancy, and issues around healthy aging. The book addresses a range of topics about women’s health and gender-specific neurological care. Topics include issues that are unique to women, as well as those that may affect both men and women, but have a different risk, prevalence, presentation or treatment considerations for women. The book’s format is based on the “What Do I Do Now?” texts, using case examples of common problems and questions that involve women with neurological disease and discussing how to best address the key issues. The aim is to give practical advice for everyday problems clinicians face in caring for women.

This chapter describes the emergence of consciousness-raising, including differences among women. It then discusses collective identity, explaining the concept and describing activists’ attempts to reconstruct collective identity as women and to determine how to practice their collective identity in daily life. Next, it discusses coming out and other forms of visibility politics, which aim to display collective identity and change conceptualizations of the group and its issues. Finally, the chapter explains the controversies and debates over identity politics and describes some of its contemporary manifestations. “Identity politics” refers to organizing around the specific experience or perspective of a given group and to organizing that has identity visibility as a goal. Identity politics has, from its beginning, grappled with the question of differences within each identity group. For women’s movements, questions of the intersections between gender and race, class, sexuality, and other dimensions have been fundamental.

This chapter examines the universe of virtue as it is displayed in Maithil women's taleworlds—such virtues as devoutness, compassion, and generosity. One striking characteristic of Maithil women's narratives is that they generally portray very little gendering in regard to basic tenets of virtue. In other words, the same virtuous qualities are appreciated in men and women; virtues are gender specific only in the particulars of their enactment. The chapter also shows that, in Maithil women's narrative hands, differences in fortune are correlated with the measure of women's virtuousness, and, further, such virtue in women is portrayed as a heritable trait passed on to offspring through maternal substance.

There is a long history of research in sport psychology examining achievement motivation theory (AMT). This chapter traces the development of achievement motivation research in sport and then reviews AMT research in disability sport. Most of the research in sport and disability examines competitive orientation, which is the sport-specific version of achievement motivation. In particular, research based on Gill and colleagues’ work has used the Sport Orientation Questionnaire (SOQ), which enables researchers to assess competitiveness, goal orientation, and win orientation. Much of the research in disability sport has had modest goals of examining the three dimensions of the SOQ to determine if they differ in regard to able-bodied versus disability groups, acquired versus congenital disabilities, more versus less experienced athletes, and gender differences. Often researchers have found no or minimal differences and no practical ramifications. Researchers are urged to examine contemporary research questions that have grown out of work in this area, such as avoidant goals and the achievement motivation climate.

Ethnic and religious identity-markers compete with class and gender as principles shaping the organization and classification of everyday life. But how are an individual's identity-based conflicts transformed and redefined? Identity is a specific form of social capital, hence contexts where multiple identities necessarily come with a hierarchy, with differences, and hence with a certain degree of hostility. It examines the rapid transformation of identity hierarchies affecting Iran, Pakistan, and Turkey, a symptom of political fractures, social-economic transformation, and new regimes of subjectification. They focus on the state's role in organizing access to resources, with its institutions often being the main target of demands, rather than competing social groups. Such contexts enable entrepreneurs of collective action to exploit identity differences, which in turn help them to expand the scale of their mobilization and to align local and national conflicts. The authors also examine how identity-based violence may be autonomous in certain contexts, and serve to prime collective action and transform the relations between communities.

This chapter reviews the incidence and gender-specific risks for women developing Alzheimer’s disease, AD. The incidence of AD doubles every five years beginning at age 60. Furthermore, AD is 2–3 times more common in women. Observational trials suggested that estrogen could play a role in delaying the onset of AD. However, the Women’s Health Initiative Memory Study, WHIMS, published in 2003, demonstrated that estrogen, with or without medroxyprogesterone, substantially increased the risk of dementia of any cause, with AD being the most frequent etiology. Additional studies suggesting that there might be a window where hormonal therapy is beneficial have not been corroborated. The gender differences in AD may be partially explained by the finding that women have less ability to clear amyloid. This results in a larger amyloid burden. Maintaining a healthy lifestyle is the only clearly documented preventative treatment for AD.

The chapter contextualizes and describes legislated, socio-political and organizational practices in managing diversity in three countries, namely India, Pakistan, and South Africa. The three countries serve as examples of emerging countries that have historical linkages with each other. Examples of how organizations within each country are responding to macro-level legislative practices are provided, highlighting the tensions and inconsistencies in applying legislation and its intent whilst dealing with country-specific realities. Diversity contrasts, such as integrating minorities in India and Pakistan, versus the integration of the majority in South Africa, are discussed, and attention is drawn to the emphasis placed on diversity categories such as gender and race. The chapter concludes with an overview of the differences in diversity management practices in the three countries.

Strength increases in boys and girls until about the age of 14 years where it begins to plateau in girls and a spurt is evident in boys. By 18 years there are few overlaps in strength between boys and girls. The exact age in which gender differences become apparent is both muscle group- and muscle action-specific. There are few well controlled longitudinal studies that have concurrently examined the influence of known variables using appropriate statistical techniques. Most studies have shown that maturation does not exert an independent effect when other factors, such as stature and body mass, are accounted for. Additionally, the assumption that muscle cross-sectional area is the most important parameter in strength production does not hold when examined with other known variables. Consistently, stature appears to play a key role in strength development and this may be attributed to changes in the muscle moment arm.

This overview of the history of Canadian comics explores not only the few Canadian cartoonists who have received study, but many who have not. Contributors look at the myriad ways that English-language, Francophone, indigenous, and queer Canadian comics and cartoonists pose alternatives to American comics, to dominant perceptions, even to gender and racial categories. Specific works covered range from the earliest Canadian comic books to the work of contemporary creators. In contrast to the United States’ melting pot, Canada has been understood to comprise a social, cultural, and ethnic mosaic, with distinct cultural variation as part of its identity. This volume reveals differences that often reflect in highly regional and localized comics such as Paul MacKinnon’s Cape Breton-specific Old Trout Funnies, Michel Rabagliati’s Montreal-based Paul comics, and Kurt Martell and Christopher Merkley’s Thunder Bay-specific zombie apocalypse. The collection also considers some of the conventionally “alternative” cartoonists, such as Seth, Dave Sim, and Chester Brown. It offers alternate views of the diverse and engaging work of two very different Canadian cartoonists who bring their own alternatives into play: Jeff Lemire in his bridging of Canadian/US and mainstream / alternative sensibilities and Nina Bunjevac in her own blending of realism and fantasy as well as of insider / outsider status. Despite an upsurge in research on Canadian comics, there is still remarkably little written about most major and all minor Canadian cartoonists.This volume provides insight into some of the lesser-known Canadian alternatives still awaiting full exploration.

This book contributes to important discussions on gender inequality in the present-day film and television industries and labour movement through an historical analysis of women workers and their trade union in the British film and television industries from 1933 to 2017. This book concentrates on the three iterations of the technicians’ union: the Association of Cine-Technicians (ACT) (1933-56), the Association of Cinematograph, Television and Allied Technicians (ACTT) (1957-91), and the Broadcasting, Entertainment, Cinematograph and Theatre Union (BECTU) (1991-2017). Drawing on previously unseen archival material and oral history interviews with activists, it casts new light on women’s experiences of union participation and feminism over nine decades. This book advances three key arguments in relation to its central themes: the operation of a gendered union structure, women’s activism, and the relationship between class and gender in the labour movement. Firstly, it argues that a gendered union structure was institutionalised from the union’s establishment and maintained through a belief system that women’s issues were not trade union issues. Secondly, it argues that separate self-organisation was essential to women’s activity within the gendered union structure as it provided an essential space and voice for women to discuss their gender-specific concerns, develop consciousness and skills and formulate policy. It further emphasises the importance of external feminist allies to women’s union activity. Thirdly, it argues that class differences between middle-class women in film and television production and working-class women in the laboratories informed the direction of women’s activity at its height during the 1970s and 1980s.

This book challenges conventional wisdoms both about economic performance and about policies for economic development in African countries. Its starting point is the striking variation in economic performance: unevenness and inequalities form a central fact. The authors highlight not only differences between African countries but also variations within countries, differences often organized around distinctions of gender, class, and ethnic identity. For example, school dropout and neonatal mortality have been reduced, particularly for some classes of women in some areas. Horticultural and agribusiness exports have grown far more rapidly in some countries than others. These variations (and many others) point to opportunities for changing performance, reducing inequalities, learning from other African policy experiences, and escaping the ties of structure and legacies of a colonial past. The book rejects teleological illusions and Eurocentric prejudice, but does pay close attention to the results of policy in more industrialized parts of the world. Seeing the contradictions of capitalism for what they are—fundamental and enduring—may help policy officials protect themselves against the misleading idea that development is likely to be a smooth, linear process, or that it would be were certain impediments removed. The authors criticize a wide range of orthodox and heterodox economists, especially for their cavalier attitude to statistical sources. Drawing on decades of research and policy experience, they combine careful use of available evidence from a range of African countries with heterodox political economy insights (mainly derived from Kalecki, Kaldor, and Hirschman) to make the policy case for specific types of public sector investment.

Working on behalf of women of color, the movement for reproductive justice incorporates intersectionality and human rights to advocate for women’s right to bear children free from coercion or abuse, terminate their pregnancies without obstacles or judgment, and raise their children in healthy environments as well as the right to bodily autonomy and gender self-identification. The movement for reproductive justice takes health advocacy further by pushing for women’s human right to access health care with dignity and to express their full selves, including their spiritual beliefs, as well as policies that address social inequalities and lead to greater wellness in communities of color. The evidence is drawn from ethnographic research with thirteen organizations located throughout the United States. The overall argument is that the organizations discussed here provide a compelling model for negotiating across differences within constituencies. This movement has built a repertoire of “ready-to-work skills” or methodology that includes cross-sector coalition building, storytelling in safer spaces, and strengths-based messaging. In the ongoing political clashes in which the war on women’s reproductive rights and targeting of immigrants seem particularly egregious and there are widespread questions about whether “the resistance” can maintain its cohesion, the movement for reproductive justice offers a model for multiscalar politics in opposition to conservative agendas and the disparagement of specific social categories. Using grassroots organizing, culture shift work, and policy advocacy, this movement also offers visions of the strength, resiliency, and dignity of people of color.

Outcomes evaluate the impact of disease. In rheumatology they span measures of disease activity, end-organ damage, and quality of life. Some outcomes are categorical, such as the presence or absence of remission. Other outcomes involve extended numeric scales such as joint counts, radiographic scores, and quality of life measures. Outcomes can be measured in the short term—weeks and months—or over years and decades. Short-term outcomes, though readily related to treatment, may have less relevance for patients. Clinical trials focus on short-term outcomes whereas observational studies explore longer-term outcomes. The matrix of rheumatic disease outcomes is exemplified by rheumatoid arthritis. Its outcomes span disease activity assessments like joint counts, damage assessed by erosive scores, quality of life evaluated by disease-specific measures like the Health Assessment Questionnaire (HAQ) or generic measures like the Short Form 36 (SF-36), overall assessments like remission, and end result such as joint replacement or death. Outcome measures are used to capture the impact of treating rheumatic diseases, and are influenced by both disease severity and the effectiveness of treatment. However, they are also influenced by a range of confounding factors. Demographic factors like age, gender, and ethnicity can all have crucial impacts. Deprivation is important, as poverty invariably worsens outcomes. Finally, comorbidities affect outcomes and patients with multiple comorbid conditions usually have worse quality of life with poorer outcomes for all diseases. These multiple confounding factors mean comparing outcomes across units without adjustment will invariably show major differences.

Outcomes evaluate the impact of disease. In rheumatology they span measures of disease activity, end-organ damage, and quality of life. Some outcomes are categorical, such as the presence or absence of remission. Other outcomes involve extended numeric scales such as joint counts, radiographic scores, and quality of life measures. Outcomes can be measured in the short term—weeks and months—or over years and decades. Short-term outcomes, though readily related to treatment, may have less relevance for patients. Clinical trials focus on short-term outcomes whereas observational studies explore longer-term outcomes. The matrix of rheumatic disease outcomes is exemplified by rheumatoid arthritis. Its outcomes span disease activity assessments like joint counts, damage assessed by erosive scores, quality of life evaluated by disease-specific measures like the Health Assessment Questionnaire (HAQ) or generic measures like the Short Form 36 (SF-36), overall assessments like remission, and end result such as joint replacement or death. Outcome measures are used to capture the impact of treating rheumatic diseases, and are influenced by both disease severity and the effectiveness of treatment. However, they are also influenced by a range of confounding factors. Demographic factors like age, gender, and ethnicity can all have crucial impacts. Deprivation is important, as poverty invariably worsens outcomes. Finally, comorbidities affect outcomes and patients with multiple comorbid conditions usually have worse quality of life with poorer outcomes for all diseases. These multiple confounding factors mean comparing outcomes across units without adjustment will invariably show major differences.

Chapter 4 grounds claims about musicians’ melancholic modalities in a multifaceted study of embodiment in Turkish classical musicking. After an investigation of how musicians describe the sensations of bodily melancholy to explain sonic melancholy, the chapter studies the way that melancholic affective practices differentiate specific kinds of boundaries: boundaries demarcating gender difference, weeping and tears and elucidating bodily boundaries, and theologies of listening that demarcate boundaries between the spiritual and the mundane. The chapter concludes that the musicians’ experiences suggest that the boundaries are meant to be crossed, because it is the very labor of crossing that makes individuals who they are.

In this study, several aspects of Saxion spin-offs have been analysed, the numbers, workplaces, location, migration, gender issues, different economic sectors and survival rates. The main question underlying all these analyses was what the impact of Saxion as university of applied sciences is on the regional economy of the two regions in which it is located. From the literature, the concept of an entrepreneurial ecosystem, as explanatory factor for the observations that in certain regions more graduates or staff members start their own business and that such an ecosystem helps small fledgling businesses to survive and grow is an interesting concept. Unfortunately, the theoretical foundations are still not fully crystallized, therefore measuring the actual influence of such entrepreneurial ecosystems is still a difficult exercise. In this study, Saxion spin-offs from two regions, Twente and the Cleantech Region, have been analysed, and several differences in terms of number of spin-offs, employment, migration patterns and survival rates have been identified. Since the spin-offs are from the same university of applied sciences, with the same policy regarding support of entrepreneurship and both regions are located outside of the economic core regions of the country, it appears as if the strength of the regional context, the regional entrepreneurial ecosystem and the business opportunities it provides is a factor in explaining why there are more spin-offs in Twente (even when controlling for the larger size of the Saxion campus in this region). If one assumes that the strength of the entrepreneurial ecosystem is stronger in Twente (among others because of existing business networks, the availability of a world class research university, the University of Twente and a business support organization like Novel-T), it would explain why spin-offs located in this region on average offer more workplaces, and have a higher survival rate than in the Cleantech Region. Gender differences related to entrepreneurship are present in Saxion spin-offs, female graduates and staff members are much less likely to start a spin-off company than their male counterparts. When females do start, their spin-offs are on average much smaller in terms of workplaces offered. Their businesses have on average an equal survival rate than those started by a male entrepreneur. Findings from the literature on the subject and the numbers found in this study suggest that there is a need for specific programs in Saxion targeting females, to at least think about starting their own business. Also, specific mentoring programs for spin-offs with female entrepreneurs may help to let these businesses grow and increase their regional economic impact. Saxion spin-offs can be found in many different sectors, something understandable given the broad spectrum of study programs in Saxion. Even though most spin-offs remain micro sized businesses, certain economic sectors seem to offer better scalable business models, especially in sectors such as industry, information and communication technology businesses and business support services. The number as well as employment in the more innovative and internationally competitive topsectors is much higher in the region Twente than in the Cleantech Region, possibly another consequence of the – apparently – stronger regional entrepreneurial ecosystem in Twente. An often-stated argument for regional economic development is that investing in spin-off companies will help to create workplaces in the region, since companies are not very likely to move. In this study, the data on migration of spin-offs have been compared with the migration of graduates, based on the HBO-monitor survey. It is not possible to one-on-one compare the two datasets, as the migration of spin-offs is calculated for the first five years of their existence and the HBO-monitor is held around one and a half year after graduation. Still, w

This book examines questions of identity, nationalism, and marginalization in the contemporary Egyptian novel from a postcolonial lens. Under colonial rule, the Egyptian novel invoked a sovereign nation-state by basking in its perceived unity. After independence, the novel professed disenchantment with state practices and unequal class and gender relations, without disrupting the nation’s imagined racial and ethno-religious homogeneity. This book identifies a trend in the twenty-first-century Egyptian novel that shatters this singular view, with the rise of a new consciousness that presents Egypt as fundamentally heterogeneous. Through a robust analysis of “new-consciousness” novels by authors like Idris ᶜAli, Bahaᵓ Tahir, Miral al-Tahawi, and Yusuf Zaydan, the author argues that this new consciousness does not only respond to predominant discourses of difference and practices of differentiation along the axes of race, ethno-religion, class, and gender by bringing the experiences of Nubian, Amazigh, Bedouin, Coptic, Jewish, and women minorities to the fore of Egypt’s literary imaginary, but also heralds the cacophony of voices that collectively cried for social justice from Tahrir Square in Egypt’s 2011-uprising. This study responds to the changing iconographic, semiotic, and formal features of the Egyptian novel. It fulfills the critical task of identifying an emergent novelistic genre and develops historically reflexive methodologies that interpret new-consciousness novels and their mediatory role in formalizing and articulating their historical moment. By adopting this context-specific approach to studying novelistic evolution, this book locates some of the strands that have been missing from the complex whole of Egypt’s culture and literary history.

This book is the result of a doctoral research that sought to analyze the characters of the industrial animation cinema that present characterizations, mannerism, behavior and sexual stereotypes, which create an unknown idea about their sexualities. Animated films, often considered an exclusive product for children, do not directly address sexualities that differ from heteronormativity. For this reason, we call “diverse” those possible characters that are different from the norms of standard heterosexuality, in order to map, analyze, quantify and qualify the purpose of these representations. In the first moment, the concepts of the theoretical Stuart Hall on representational practices capable of producing ideologies, discourses and signs are applied in animation cinema and associated with anthropomorphism, which we believe to be a camouflaged way of representing such characters. Then, we characterize the “diverse” and the reasons for choosing the term, so that we can propose a debate about cinema as an instance capable of inscribing gender norms and how animation cinema acts as a media capable of proposing a cultural specific pedagogy. Then, based on the principle of similarity and difference, we mapped the “diverse” characters present in the history of animation cinema at the main North American studios: Disney, Pixar and DreamWorks. After this process, we analyze and qualify the intention of the representations of the “diverse” in the characters of animated films. Therefore, do not be alarmed when faced with classic characters such as Ursula, Genius, Scar, Timon, Pumbaa, Edna Mode, King Julien and many others who present different facets of sexuality.

Bones are multifunctional passive organs of movement that supports soft tissue and directly attached muscles. They also protect internal organs and are a reserve of calcium, phosphorus and magnesium. Each bone is covered with periosteum, and the adjacent bone surfaces are covered by articular cartilage. Histologically, the bone is an organ composed of many different tissues. The main component is bone tissue (cortical and spongy) composed of a set of bone cells and intercellular substance (mineral and organic), it also contains fat, hematopoietic (bone marrow) and cartilaginous tissue. Bones are a tissue that even in adult life retains the ability to change shape and structure depending on changes in their mechanical and hormonal environment, as well as self-renewal and repair capabilities. This process is called bone turnover. The basic processes of bone turnover are: • bone modeling (incessantly changes in bone shape during individual growth) following resorption and tissue formation at various locations (e.g. bone marrow formation) to increase mass and skeletal morphology. This process occurs in the bones of growing individuals and stops after reaching puberty • bone remodeling (processes involve in maintaining bone tissue by resorbing and replacing old bone tissue with new tissue in the same place, e.g. repairing micro fractures). It is a process involving the removal and internal remodeling of existing bone and is responsible for maintaining tissue mass and architecture of mature bones. Bone turnover is regulated by two types of transformation: • osteoclastogenesis, i.e. formation of cells responsible for bone resorption • osteoblastogenesis, i.e. formation of cells responsible for bone formation (bone matrix synthesis and mineralization) Bone maturity can be defined as the completion of basic structural development and mineralization leading to maximum mass and optimal mechanical strength. The highest rate of increase in pig bone mass is observed in the first twelve weeks after birth. This period of growth is considered crucial for optimizing the growth of the skeleton of pigs, because the degree of bone mineralization in later life stages (adulthood) depends largely on the amount of bone minerals accumulated in the early stages of their growth. The development of the technique allows to determine the condition of the skeletal system (or individual bones) in living animals by methods used in human medicine, or after their slaughter. For in vivo determination of bone properties, Abstract 10 double energy X-ray absorptiometry or computed tomography scanning techniques are used. Both methods allow the quantification of mineral content and bone mineral density. The most important property from a practical point of view is the bone’s bending strength, which is directly determined by the maximum bending force. The most important factors affecting bone strength are: • age (growth period), • gender and the associated hormonal balance, • genotype and modification of genes responsible for bone growth • chemical composition of the body (protein and fat content, and the proportion between these components), • physical activity and related bone load, • nutritional factors: – protein intake influencing synthesis of organic matrix of bone, – content of minerals in the feed (CA, P, Zn, Ca/P, Mg, Mn, Na, Cl, K, Cu ratio) influencing synthesis of the inorganic matrix of bone, – mineral/protein ratio in the diet (Ca/protein, P/protein, Zn/protein) – feed energy concentration, – energy source (content of saturated fatty acids - SFA, content of polyun saturated fatty acids - PUFA, in particular ALA, EPA, DPA, DHA), – feed additives, in particular: enzymes (e.g. phytase releasing of minerals bounded in phytin complexes), probiotics and prebiotics (e.g. inulin improving the function of the digestive tract by increasing absorption of nutrients), – vitamin content that regulate metabolism and biochemical changes occurring in bone tissue (e.g. vitamin D3, B6, C and K). This study was based on the results of research experiments from available literature, and studies on growing pigs carried out at the Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences. The tests were performed in total on 300 pigs of Duroc, Pietrain, Puławska breeds, line 990 and hybrids (Great White × Duroc, Great White × Landrace), PIC pigs, slaughtered at different body weight during the growth period from 15 to 130 kg. Bones for biomechanical tests were collected after slaughter from each pig. Their length, mass and volume were determined. Based on these measurements, the specific weight (density, g/cm3) was calculated. Then each bone was cut in the middle of the shaft and the outer and inner diameters were measured both horizontally and vertically. Based on these measurements, the following indicators were calculated: • cortical thickness, • cortical surface, • cortical index. Abstract 11 Bone strength was tested by a three-point bending test. The obtained data enabled the determination of: • bending force (the magnitude of the maximum force at which disintegration and disruption of bone structure occurs), • strength (the amount of maximum force needed to break/crack of bone), • stiffness (quotient of the force acting on the bone and the amount of displacement occurring under the influence of this force). Investigation of changes in physical and biomechanical features of bones during growth was performed on pigs of the synthetic 990 line growing from 15 to 130 kg body weight. The animals were slaughtered successively at a body weight of 15, 30, 40, 50, 70, 90, 110 and 130 kg. After slaughter, the following bones were separated from the right half-carcass: humerus, 3rd and 4th metatarsal bone, femur, tibia and fibula as well as 3rd and 4th metatarsal bone. The features of bones were determined using methods described in the methodology. Describing bone growth with the Gompertz equation, it was found that the earliest slowdown of bone growth curve was observed for metacarpal and metatarsal bones. This means that these bones matured the most quickly. The established data also indicate that the rib is the slowest maturing bone. The femur, humerus, tibia and fibula were between the values of these features for the metatarsal, metacarpal and rib bones. The rate of increase in bone mass and length differed significantly between the examined bones, but in all cases it was lower (coefficient b <1) than the growth rate of the whole body of the animal. The fastest growth rate was estimated for the rib mass (coefficient b = 0.93). Among the long bones, the humerus (coefficient b = 0.81) was characterized by the fastest rate of weight gain, however femur the smallest (coefficient b = 0.71). The lowest rate of bone mass increase was observed in the foot bones, with the metacarpal bones having a slightly higher value of coefficient b than the metatarsal bones (0.67 vs 0.62). The third bone had a lower growth rate than the fourth bone, regardless of whether they were metatarsal or metacarpal. The value of the bending force increased as the animals grew. Regardless of the growth point tested, the highest values were observed for the humerus, tibia and femur, smaller for the metatarsal and metacarpal bone, and the lowest for the fibula and rib. The rate of change in the value of this indicator increased at a similar rate as the body weight changes of the animals in the case of the fibula and the fourth metacarpal bone (b value = 0.98), and more slowly in the case of the metatarsal bone, the third metacarpal bone, and the tibia bone (values of the b ratio 0.81–0.85), and the slowest femur, humerus and rib (value of b = 0.60–0.66). Bone stiffness increased as animals grew. Regardless of the growth point tested, the highest values were observed for the humerus, tibia and femur, smaller for the metatarsal and metacarpal bone, and the lowest for the fibula and rib. Abstract 12 The rate of change in the value of this indicator changed at a faster rate than the increase in weight of pigs in the case of metacarpal and metatarsal bones (coefficient b = 1.01–1.22), slightly slower in the case of fibula (coefficient b = 0.92), definitely slower in the case of the tibia (b = 0.73), ribs (b = 0.66), femur (b = 0.59) and humerus (b = 0.50). Bone strength increased as animals grew. Regardless of the growth point tested, bone strength was as follows femur > tibia > humerus > 4 metacarpal> 3 metacarpal> 3 metatarsal > 4 metatarsal > rib> fibula. The rate of increase in strength of all examined bones was greater than the rate of weight gain of pigs (value of the coefficient b = 2.04–3.26). As the animals grew, the bone density increased. However, the growth rate of this indicator for the majority of bones was slower than the rate of weight gain (the value of the coefficient b ranged from 0.37 – humerus to 0.84 – fibula). The exception was the rib, whose density increased at a similar pace increasing the body weight of animals (value of the coefficient b = 0.97). The study on the influence of the breed and the feeding intensity on bone characteristics (physical and biomechanical) was performed on pigs of the breeds Duroc, Pietrain, and synthetic 990 during a growth period of 15 to 70 kg body weight. Animals were fed ad libitum or dosed system. After slaughter at a body weight of 70 kg, three bones were taken from the right half-carcass: femur, three metatarsal, and three metacarpal and subjected to the determinations described in the methodology. The weight of bones of animals fed aa libitum was significantly lower than in pigs fed restrictively All bones of Duroc breed were significantly heavier and longer than Pietrain and 990 pig bones. The average values of bending force for the examined bones took the following order: III metatarsal bone (63.5 kg) <III metacarpal bone (77.9 kg) <femur (271.5 kg). The feeding system and breed of pigs had no significant effect on the value of this indicator. The average values of the bones strength took the following order: III metatarsal bone (92.6 kg) <III metacarpal (107.2 kg) <femur (353.1 kg). Feeding intensity and breed of animals had no significant effect on the value of this feature of the bones tested. The average bone density took the following order: femur (1.23 g/cm3) <III metatarsal bone (1.26 g/cm3) <III metacarpal bone (1.34 g / cm3). The density of bones of animals fed aa libitum was higher (P<0.01) than in animals fed with a dosing system. The density of examined bones within the breeds took the following order: Pietrain race> line 990> Duroc race. The differences between the “extreme” breeds were: 7.2% (III metatarsal bone), 8.3% (III metacarpal bone), 8.4% (femur). Abstract 13 The average bone stiffness took the following order: III metatarsal bone (35.1 kg/mm) <III metacarpus (41.5 kg/mm) <femur (60.5 kg/mm). This indicator did not differ between the groups of pigs fed at different intensity, except for the metacarpal bone, which was more stiffer in pigs fed aa libitum (P<0.05). The femur of animals fed ad libitum showed a tendency (P<0.09) to be more stiffer and a force of 4.5 kg required for its displacement by 1 mm. Breed differences in stiffness were found for the femur (P <0.05) and III metacarpal bone (P <0.05). For femur, the highest value of this indicator was found in Pietrain pigs (64.5 kg/mm), lower in pigs of 990 line (61.6 kg/mm) and the lowest in Duroc pigs (55.3 kg/mm). In turn, the 3rd metacarpal bone of Duroc and Pietrain pigs had similar stiffness (39.0 and 40.0 kg/mm respectively) and was smaller than that of line 990 pigs (45.4 kg/mm). The thickness of the cortical bone layer took the following order: III metatarsal bone (2.25 mm) <III metacarpal bone (2.41 mm) <femur (5.12 mm). The feeding system did not affect this indicator. Breed differences (P <0.05) for this trait were found only for the femur bone: Duroc (5.42 mm)> line 990 (5.13 mm)> Pietrain (4.81 mm). The cross sectional area of the examined bones was arranged in the following order: III metatarsal bone (84 mm2) <III metacarpal bone (90 mm2) <femur (286 mm2). The feeding system had no effect on the value of this bone trait, with the exception of the femur, which in animals fed the dosing system was 4.7% higher (P<0.05) than in pigs fed ad libitum. Breed differences (P<0.01) in the coross sectional area were found only in femur and III metatarsal bone. The value of this indicator was the highest in Duroc pigs, lower in 990 animals and the lowest in Pietrain pigs. The cortical index of individual bones was in the following order: III metatarsal bone (31.86) <III metacarpal bone (33.86) <femur (44.75). However, its value did not significantly depend on the intensity of feeding or the breed of pigs.