Seasonal infertility in pigs: what have we achieved and where are we up to?

2017 ◽  
Vol 57 (12) ◽  
pp. 2325 ◽  
Author(s):  
R. H. King

The most common manifestations of seasonal infertility are delayed puberty, prolonged weaning to oestrus intervals and a reduced farrowing rate brought about by increased returns to oestrus, including a proportionally higher incidence of irregular returns to oestrus. Over the past 40 years, there has been considerable investment in Australian pig research that has generated extensive knowledge about the physiological mechanisms behind seasonal infertility. While some of the physiological mechanisms allowing the expression of seasonal infertility still remain unclear, a number of possible intervention strategies have been developed and investigated to ameliorate the effects of seasonal infertility in commercial production. For commercial pork producers, there is considerable information available that is based on both research and practical experience, which the farmers can use to identify strategies to minimise the impact of seasonal infertility on the farm. The industry still provides some support to research and development efforts to address seasonal infertility, although, in the future, it may be more targeted to identifying interventions to ameliorate the impact of seasonal infertility in affected herds, rather than undertaking intensive studies into the possible mechanisms and reasons behind this very complex syndrome.

1996 ◽  
Vol 35 (2) ◽  
pp. 189-190
Author(s):  
Mir Annice Mahmood

This book, hereinafter referred to as the Guide, has been developed for those social analysts (e.g., anthropologists, sociologists, and human geographers) who have had little or no practical experience in applying their knowledge as development practitioners. In the past, development projects would be analysed from a narrow financial and economic perspective. But with the evolution of thinking on development, this narrow financial and economic aspect has now been broadened to include the impact on society as the very meaning of development has now come to symbolise social change. Thus, development is not restricted only to plans and figures; the human environment in its entirety is now considered for analysis while designing and implementing development projects.


1999 ◽  
Vol 1999 ◽  
pp. 176-176
Author(s):  
A.R. Peters ◽  
L.A. Dwyer ◽  
A. Dawson ◽  
P.A. Canham ◽  
J.D. Mackinnon

The problem of seasonal infertility in pigs has been recognised for many years. The infertility complex can may be manifested by increased returns to service, prolonged weaning to oestrus intervals and decreased litter size. The purpose of this trial was to evaluate the effects of Buserelin treatment on fertility in sows and gilts during the seasonally infertile period.A total of 1231 mixed parity sows and gilts from five outdoor herds in East Anglia were randomly assigned to one of three treatment groups. Any sows not presented for service at first post weaning oestrus were excluded. All sows and gilts judged to be in adequate health and condition to be kept in a commercial breeding herd were included. Group C sows and gilts were given no treatment. Group R1 sows and gilts were injected i.m. with 8μg Buserelin (2.0ml Receptal; Hoechst Roussel Vet UK Ltd) on the day of service.


1970 ◽  
Vol 5 (1) ◽  
pp. 53-74 ◽  
Author(s):  
Haim H. Cohn

Penology, or the science of punishment, has three different aspects: the technique of punishment, or the character of the various punitive measures and the means by which they are enforced and implemented; the psychology of punishment, probing into the function of punitive action, both in so far as the victim, that is the person punished, is affected, and in so far as such action is calculated to satisfy the needs or purposes of the punishing authority; and the sociology of punishment allocating to penal activity its place (as part of the legal institutional framework) in the social, economic and political life of the community. All these aspects are interconnected, and the view generally advocated (though hardly proven as yet) is that they are also interdependent: the psychological effect as well as the sociological impact of any given penalty depends, it is held, on the nature of the penalty concerned and the manner in which it is implemented. The fact cannot, however, sufficiently be stressed that any such interdependence is not, as a rule, preconceived or planned in advance. It is for the historian of penal law or penology to establish on the statistical or other data what has, in fact, been the effect or the impact of any particular punishment in any given period or community. But the penologist is not necessarily either historian or statistician. While, like the lawyer, he builds on institutions which have come down from the past, neither his theorization nor his planning is bound by precedent or past experience, and he may well dismiss the past as one great error which exists only to be rectified or eliminated. This being so, for a penology to develop it is not necessary that there should be any practical experience with the effect and impact of punishments actually imposed. It is true that in the absence of such practical experience, penology will remain an exercise in theorization and planning, not unlike the exercises in “utopian” and idealistic legislation which have occupied so many geniuses in the past; but that does not derogate from the validity of, and the scientific attention due to, the reasons and considerations underlying the theories propounded.


Author(s):  
V. N. Kovnir ◽  
O. D. Kuznetsova

The article describes the stages and main activities carried out in the framework of the new economic policy (19211927) are considered. The place and role of NEP in the economic history of Russia, despite the past 100 years, are still following discussion issues. In particular, the question of the impact of a new economic policy on the formation of a mixed economy in developed capitalist countries in the second half of the 20th century was relevant. In the 1920s, an economic system was built in Russia in Russia, which can be developed as a mixed economy, which has proven its flexibility and effectiveness in solving the most complicated economic tasks. The article analyzes the experience of NEP based on the use of the methodology of institutional theory. The activities of the authorities during this period were aimed at the adaptation of old institutes, skills, mentality of the population in the conditions of a tight deficit of all resources to new requirements, primarily in the economy. The importance of the tasks facing the tasks and the limited time released by history to their decision determined the choice of a rigid totalitarian style of economic management and society, which did not allow to reveal the potential capabilities of the ECAP economic mechanism.


Author(s):  
Patricia Puente Guerrero

Numerosos estudios han abordado las características y antecedentes de las personas que se encuentran o han estado en prisión, así como las importantes consecuencias que esta condición ha implicado en el devenir de sus vidas. Sin embargo, muchos menos trabajos han sido dedicados a analizar específicamente la conexión entre aquella y la situación de sinhogarismo, sin que apenas se haya prestado atención a dicha cuestión en nuestro país. Las investigaciones en esta materia apuntan a que ambas circunstancias se encuentran estrechamente relacionadas e interactúan de forma compleja a lo largo del tiempo, en conexión con otros factores, tanto relativos al pasado como al presente, en la conformación final de la historia de vida de cada individuo. Con base en los datos recopilados por el Instituto Nacional de Estadística en la más reciente Encuesta a las personas sin hogar, realizada en el año 2012, se analizan diversos aspectos relacionados con las características, antecedentes personales y familiares y condiciones de vida de las personas en situación de sin hogar en función de si habían estado o no en prisión en algún momento de su vida. A nivel global, y en la línea de la literatura previa, los hallazgos sugieren que esta experiencia aporta un valor negativo añadido a la ya de por sí desafortunada situación de sinhogarismo, comportando unas peores condiciones de vida, a la vez que caracteriza a las personas sin hogar con antecedentes más desfavorables a lo largo de su infancia y adolescencia. Tales resultados evidencian la necesidad de diseñar e implementar estrategias de intervención que resulten eficaces para el logro efectivo de la inserción social y laboral de estos colectivos y, particularmente, de apostar por estrategias preventivas que incidan sobre las raíces de ambas condiciones. A lot of research has been conducted on the characteristics and backgrounds of people who are or have ever been imprisoned, as well as on the impact this condition has entailed on their lives. However, much less work has been specifically aimed at analysing the connection between imprisonment and homelessness, and hardly any attention has been paid to this topic in Spain. Previous research in this area has shown that both circumstances are closely related and interact in complex ways over time, in connection to other factors, both referring to the past and present time, in the final shaping of the individual’s life story. On the basis of the data collected by the National Institute of Statistics from its latest Survey to Homeless People, conducted in 2012, characteristics, backgrounds and life conditions of homeless people who had and had not been in prison are compared. In support of previous research, overall findings suggest that the fact of being an exprisoner adds negative value to the already adverse situation of homelessness, since life conditions were less favourable among individuals from the second group, who also reported coming from disadvantaged backgrounds to a greater extent. Such results evince a need for designing and implementing intervention strategies that are truly effective for achieving social inclusión and employability among these groups and, particularly, the relevance of developing preventive strategies to address the roots of both conditions.


Author(s):  
Leslie M. Loew

A major application of potentiometric dyes has been the multisite optical recording of electrical activity in excitable systems. After being championed by L.B. Cohen and his colleagues for the past 20 years, the impact of this technology is rapidly being felt and is spreading to an increasing number of neuroscience laboratories. A second class of experiments involves using dyes to image membrane potential distributions in single cells by digital imaging microscopy - a major focus of this lab. These studies usually do not require the temporal resolution of multisite optical recording, being primarily focussed on slow cell biological processes, and therefore can achieve much higher spatial resolution. We have developed 2 methods for quantitative imaging of membrane potential. One method uses dual wavelength imaging of membrane-staining dyes and the other uses quantitative 3D imaging of a fluorescent lipophilic cation; the dyes used in each case were synthesized for this purpose in this laboratory.


GeroPsych ◽  
2011 ◽  
Vol 24 (3) ◽  
pp. 143-154 ◽  
Author(s):  
Elmar Gräßel ◽  
Raffaela Adabbo

The burden of caregivers has been intensively researched for the past 30 years and has resulted in a multitude of individual findings. This review illustrates the significance of the hypothetical construct of perceived burden for the further development and design of the homecare situation. Following explanations regarding the term informal caregiver, we derive the construct burden from its conceptual association with the transactional stress model of Lazarus and Folkman. Once the extent and characteristics of burden have been set forth, we then present the impact of perceived burden as the care situation. The question of predictors of burden will lead into the last section from which implications can be derived for homecare and relief of caregivers.


2004 ◽  
Vol 34 (136) ◽  
pp. 339-356
Author(s):  
Tobias Wölfle ◽  
Oliver Schöller

Under the term “Hilfe zur Arbeit” (aid for work) the federal law of social welfare subsumes all kinds of labour disciplining instruments. First, the paper shows the historical connection of welfare and labour disciplining mechanisms in the context of different periods within capitalist development. In a second step, against the background of historical experiences, we will analyse the trends of “Hilfe zur Arbeit” during the past two decades. It will be shown that by the rise of unemployment, the impact of labour disciplining aspects of “Hilfe zur Arbeit” has increased both on the federal and on the municipal level. For this reason the leverage of the liberal paradigm would take place even in the core of social rights.


TAPPI Journal ◽  
2018 ◽  
Vol 17 (09) ◽  
pp. 519-532 ◽  
Author(s):  
Mark Crisp ◽  
Richard Riehle

Polyaminopolyamide-epichlorohydrin (PAE) resins are the predominant commercial products used to manufacture wet-strengthened paper products for grades requiring wet-strength permanence. Since their development in the late 1950s, the first generation (G1) resins have proven to be one of the most cost-effective technologies available to provide wet strength to paper. Throughout the past three decades, regulatory directives and sustainability initiatives from various organizations have driven the development of cleaner and safer PAE resins and paper products. Early efforts in this area focused on improving worker safety and reducing the impact of PAE resins on the environment. These efforts led to the development of resins containing significantly reduced levels of 1,3-dichloro-2-propanol (1,3-DCP) and 3-monochloropropane-1,2-diol (3-MCPD), potentially carcinogenic byproducts formed during the manufacturing process of PAE resins. As the levels of these byproducts decreased, the environmental, health, and safety (EH&S) profile of PAE resins and paper products improved. Recent initiatives from major retailers are focusing on product ingredient transparency and quality, thus encouraging the development of safer product formulations while maintaining performance. PAE resin research over the past 20 years has been directed toward regulatory requirements to improve consumer safety and minimize exposure to potentially carcinogenic materials found in various paper products. One of the best known regulatory requirements is the recommendations of the German Federal Institute for Risk Assessment (BfR), which defines the levels of 1,3-DCP and 3-MCPD that can be extracted by water from various food contact grades of paper. These criteria led to the development of third generation (G3) products that contain very low levels of 1,3-DCP (typically <10 parts per million in the as-received/delivered resin). This paper outlines the PAE resin chemical contributors to adsorbable organic halogens and 3-MCPD in paper and provides recommendations for the use of each PAE resin product generation (G1, G1.5, G2, G2.5, and G3).


2014 ◽  
Vol 1 (1) ◽  
Author(s):  
Turkan Ahmet

The past few decades of ongoing war in Iraq has had a dramatic impact on the health of Iraq’s population. Wars are known to have negative effects on the social and physical environments of individuals, as well as limit their access to the available health care services. This paper explores the personal experiences of my family members, who were exposed to war, as well as includes information that has been reviewed form many academic sources. The data aided in providing recommendations and developing strategies, on both local and international levels, to improve the health status of the populations exposed to war.


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