Double Housing Research Articles

EFFECTS OF VARIOUS HOUSING SYSTEMS ON THE DEVELOPMENT OF EQUINE BEHAVIOR IN THOROUGHBRED HORSE PAKISTAN

The study was conducted to investigate the impact of various housing systems on the development of equine stereotypies. N=120 x Thoroughbred Pakistan of three different groups (A=40 horses 2years not gelded, B= 40 age 3 years and C= 40 four years gelded) were kept in four distinct types of housing systems, (SHSNI) Single Housing System No Interaction, (SHSLI) Single Housing System Limited Interaction, (DHS) Double Housing System and (GHS) Group Housing. The study was conducted in four phases (Phase-I SHSNI, Phase-II SHSNI, Phase- III DHS and Phase- IVGHS were used) and each phase was comprised of 30 days duration. On every 10th day parameters were recorded, and three readings were recorded in every housing system. A comprehensive set of 12 readings recorded through video recording, personal observation and information provided by horse handlers and randomized complete block design was performed for statistical analysis. Housing systems had significant (p<0.05) impact on the development of stereotypies. The highest incidence of stereotypies 35.83% was found in SHSNI, followed by 29.13% in DHS, 18.31% in GHS and the lowest 16.63% in SHSLI. The maximum number of horses displayed weaving (7.29%), behavior followed by kicking (6.45%), biting (6.03%) and crib-biting (5.83%). The groups (non-gelding and gelding) were found non-significant (p>0.05). The study concludes that SHSLI is more suitable needed to be adopted, system has necessary social interaction, less stereotypies with limited injuries as compared to alternative housing systems.

Influence of Mild Chronic Stress and Social Isolation on Acute Ozone-Induced Alterations in Stress Biomarkers and Brain-Region-Specific Gene Expression in Male Wistar-Kyoto Rats.

Individuals with psychosocial stress often experience an exaggerated response to air pollutants. Ozone (O3) exposure has been associated with the activation of the neuroendocrine stress-response system. We hypothesized that preexistent mild chronic stress plus social isolation (CS), or social isolation (SI) alone, would exacerbate the acute effects of O3 exposure on the circulating adrenal-derived stress hormones, and the expression of the genes regulating glucocorticoid stress signaling via an altered stress adaptation in a brain-region-specific manner. Male Wistar-Kyoto rats (5 weeks old) were socially isolated, plus were subjected to either CS (noise, confinement, fear, uncomfortable living, hectic activity, and single housing), SI (single housing only, restricted handling and no enrichment) or no stress (NS; double housing, frequent handling and enrichment provided) for 8 weeks. The rats were then exposed to either air or O3 (0.8 ppm for 4 h), and the samples were collected immediately after. The indicators of sympathetic and hypothalamic-pituitary axis (HPA) activation (i.e., epinephrine, corticosterone, and lymphopenia) increased with O3 exposure, but there were no effects from CS or SI, except for the depletion of serum BDNF. CS and SI revealed small changes in brain-region-specific glucocorticoid-signaling-associated markers of gene expression in the air-exposed rats (hypothalamic Nr3c1, Nr3c2 Hsp90aa1, Hspa4 and Cnr1 inhibition in SI; hippocampal HSP90aa1 increase in SI; and inhibition of the bed nucleus of the stria terminalis (BNST) Cnr1 in CS). Gene expression across all brain regions was altered by O3, reflective of glucocorticoid signaling effects, such as Fkbp5 in NS, CS and SI. The SI effects on Fkbp5 were greatest for SI in BNST. O3 increased Cnr2 expression in the hypothalamus and olfactory bulbs of the NS and SI groups. O3, in all stress conditions, generally inhibited the expression of Nr3c1 in all brain regions, Nr3c2 in the hippocampus and hypothalamus and Bdnf in the hippocampus. SI, in general, showed slightly greater O3-induced changes when compared to NS and CS. Serum metabolomics revealed increased sphingomyelins in the air-exposed SI and O3-exposed NS, with underlying SI dampening some of the O3-induced changes. These results suggest a potential link between preexistent SI and acute O3-induced increases in the circulating adrenal-derived stress hormones and brain-region-specific gene expression changes in glucocorticoid signaling, which may partly underlie the stress dynamic in those with long-term SI.

Preview the Products on Display at Display Week 2021

Preview the Products on Display at Display Week 2021

Establishing the Correlations for Eco-Efficiency Index of Various Types of Structural Concrete Used in the Malaysian Housing Using Response Surface Method

The concept of a sustainable environment generally refers to the development that creates a balance between the resources consumption pattern and the rate of depletion of natural resources. For determining the level of sustainability of any project, three types of impacts are assessed: economic, environmental, and social. This paper presents an analytical study that focused on establishing a correlation of eco-efficiency index for low-rise reinforced concrete residential housing in Malaysia. A statistical technique using the response surface method was performed, with the help of design expert software. The data was verified using regression analysis and represented by R2 value, standard deviation, and coefficient of variation. By using economic factors, environmental factors, and the eco-efficiency index, 3D model graphs were developed for structural concrete containing fly ash, and blast furnace slag (BFS), which was assigned to the structural members in a single and double story housing. The study has concluded that the correlations established between the cost and carbon emission, economic & environmental scores, and the eco-efficiency index have shown a linear trend for single story housing and a cubic for the double story housing.

The Difference of Characters Between Housing Poverty Types - Subcriterion criteria of Substandard Housing, Unaffordable Housing and double housing poverty -

The Difference of Characters Between Housing Poverty Types - Subcriterion criteria of Substandard Housing, Unaffordable Housing and double housing poverty -

Transformation of Double Housing Planer and Analysis of its Efficiency Increasing

In this paper, some improvement measures are proposed to improve the performance of B2152 double housing planer. The control system is thoroughly transformed. PLC replaces original relay control, all-digital DC speed regulator controls motor of the work table. The control performance is significantly improved, the new control system has the merits of the even velocity,the high machining precision,the wide range,the low noise and saving energy. Milling functions is added and processing range is broadened and efficiency is increased.

The Role of Housing in Community Health Promotion Among the Aged

A total of 89 aged residents living independently in single and double occupancy housing in an historic, traditionally planned neighborhood in New Orleans were surveyed with respect to their engagement in the outdoor realm in their immediate neighborhood. An index was developed, comprised of variables spanning the scale of the private dwelling to neighborhood scale. Certain dwelling attributes, health status factors, lifestyle factors, and neighborhood factors were found to be associated with a disinclination to walk outdoors in the community. Among the findings, improperly designed porches and insufficient semi-private exterior space adjacent to the dwelling function as strong deterrents to health-promoting walking activity outdoors, closely followed by fear associated with being victimized by crime in one's immediate neighborhood. Such conditions were found to pose a barrier to full engagement with the community in what on the surface would otherwise appear to be an imminently pedestrian-scaled residential setting. Study limitations, and directions for future research within the environmental design disciplines are discussed for both historic neighborhood settings and in new development.