Measurement of true ileal calcium digestibility of feed ingredients for broiler chickens : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Animal Science at Institute of Veterinary, Animal and Biomedical Science (IVABS), Massey University, Palmerston North, New Zealand

Listed in 2017 Dean's List of Exceptional ThesesThe recent interest towards the use of digestible phosphorus (P) in poultry feed formulations necessitates the measurement of true calcium (Ca) digestibility of feed ingredients because of the close relationship between these two minerals for their absorption and post absorptive utilisation. When this thesis research was initiated, no published data were available on Ca digestibility of feed ingredients for broiler chickens. The major objective of the studies reported in this thesis was to determine the true Ca digestibility of feed ingredients for broiler chickens. In total, nine studies were conducted. The first study (Chapter 4) was conducted to determine the effect of methodology on ileal endogenous Ca losses. Three methods, namely feeding a Ca- and P-free diet, maize gluten meal based diet and egg albumen based diet, were used. Ileal endogenous Ca losses differed among different methodologies. The highest ileal endogenous losses of 125 mg/kg dry matter intake (DMI) were recorded on the Ca- and P-free diet, followed by 77 and 43 mg/kg DMI on maize gluten meal and egg albumen diets, respectively. In the second and third studies (Chapters 5 and 6), regression and direct methods, respectively, were used to determine the true Ca digestibility of meat and bone meal (MBM). The true Ca digestibility coefficient of MBM samples were ranged from 0.41 to 0.60. No difference was observed between true Ca digestibility coefficients of MBM determined by regression and direct methods. Since the direct method is less laborious and cost effective compared to regression method, this method was used in subsequent studies (Chapters 7 to 10) to determine the true Ca digestibility of a range of Ca sources. In fourth and fifth studies (Chapters 7 and 8), the influence of dietary P, particle size and Ca to non-phytate P ratio was investigated on the true Ca digestibility of limestone for broiler chickens. The true Ca digestibility of three limestone samples varied from 0.56 to 0.62. Supplementation with recommended dietary P (4.5 g/kg) increased the true Ca digestibility of limestone when compared to diets without P. An increase in particle size from <0.5 to 1-2mm improved the true ileal Ca digestibility of limestone. Widening the Ca to non-phytate P ratio reduced the true Ca digestibility of limestone for broiler chickens. The sixth study (Chapter 9) was conducted to determine the effect of Ca source and particle size on the true Ca digestibility and total tract retention. Limestone and oyster shell were used as Ca sources. No difference was observed between the true Ca digestibility of limestone and oyster shell. An increase in particle size from <0.5 to 1-2 mm increased both the Ca digestibility and retention of both Ca sources, and increased the Ca concentration of gizzard contents. The study reported in Chapter 10 was conducted to determine the true Ca digestibility of dicalcium phosphate (DCP), monocalcium phosphate (MCP), canola meal, poultry by-product meal and fish meal, and to compare the effect of dietary adaptation length on true Ca digestibility of DCP and MCP. The true Ca digestibility coefficients of these feed ingredients were lower than MBM, limestone and oyster shell, and ranged from 0.24 to 0.33. It was speculated that the length of adaption to the assay diets may be responsible for the lower than expected estimates. The effect of dietary adaptation length (24, 48 or 72 hrs) was subsequently examined, but had no effect on true Ca digestibility of DCP and MCP. In the final study (Chapter 11), the true Ca digestibility of DCP was determined using different methodologies (regression, difference and direct methods). The true Ca digestibility coefficients of DCP were 0.34 and 0.21 with direct and different methods, respectively. A very low digestibility coefficient of 0.13 was determined by the regression method. In conclusion, the true Ca digestibility coefficient of major Ca sources (limestone, oyster shell and MBM) is not high and varied from 0.40 to 0.70. Particle size of limestone and oyster shell influenced Ca digestibility, with coarser particles having higher digestibility. The direct method appears to be suitable for the determination of true Ca digestibility of limestone, oyster shell and MBM, but may not be appropriate for other Ca sources with intrinsic imbalance of Ca and P

Decision support system for the selection of an ITE or a BTE hearing aid

The purpose of this research is to mine a large set of heterogeneous audiology data to create a decision support system (DSS) to choose between two hearing aid types (ITE and BTE aid). This research is based on the data analysis of audiology data using various statistical and data mining techniques. It uses the data of a large NHS (National Health Services, UK) facility. It uses 180,000 records (covering more than 23,000 different patients) from a hearing aid clinic. The developed system uses an unconventional method to predict hearing aid type for a patient and it can be used as a second opinion by audiologists for complex cases. After modifying the system to take account of the feedback from a professional audiologist, the success rates obtained were in the ranges 63 to 66 percent. In this research an automatic system was developed to choose between an ITE or a BTE hearing aid type with an explanation facility that can be used as a second opinion by audiologist in cases where the choice of an ITE or a BTE hearing aid is not clear cut. This analysis of audiology data and DSS will provide supplementary information for audiology experts and hearing aid dispensers. This type of system may also be of interest to manufacturers of hearing technologies in using as a ready means for their telephone customer services staff to check data, discovering data in audiology records will also be good for general awareness about the suitability of hearing aid type

Barriers to the implementation of quality management system in media organizations in pakistan: an empirical study

Quality management system has played pivotal role in establishing organizational functions and processes in the very right perspective of a very well knitted system of documentation, training and implementation. Media organizations are so close in their very existence and social structure and they are more than needed to stream line their processes as their impact on social life is significant and considerable. This study encompasses the top news channels in Pakistan and recorded the views of their top management with respect to their feelings pertaining to QMS. This study is very first one of its kinds in Pakistan and it is hoped that it may open more doors for future research avenues in this very area

Maslow’s Hierarchy of Needs in “Button Button” by Richard Matheson

A short stories author and novelists named Richard Matheson was born on 1926 in US state New Jersey. Story writer Richard Matheson is best known for his science fiction’s works. His first story was “Born Man and Woman.” He also earned a good name for his popular fiction “I am Legend” as well as due to short story “Button Button” He passed away on June 23, 2013 (Editors, 2014). Alike various famous novelists and story writers Matheson also leave a deep impression of his readers. He also turned minor incidents and situations into extraordinary situations.

An Investigation Of The Factors Affecting The Collaborative Propensity Of Home-Based Businesses: An Outline Of The Initial Study

Business collaboration is frequently used as a method for small businesses to maximise their chances of success in competitive markets, allowing as it does for a reduction in transaction costs and access to resources held by other businesses. Home-based businesses in particular stand to benefit from collaborative arrangements, owing to the typical scarcity of resources available to them. Despite the relative prevalence of collaborative behaviours exhibited by such businesses, very little research has been performed to study the factors which impact a home-based businesses propensity for collaboration. This positional paper presents an investigation into those factor using a “pre- collaborative” approach, using quantitative methods applied to the Global Entrepreneurship Monitor (GEM) data to discern commonalities present within the organisational, technological and environmental conditions of home-based businesses which display a collaborative inclination, to determine the underlying factors which predispose these businesses to the formation of collaborative relationships

Modeling Information Anxiety

This paper traces the historical developments using selected literature related to ‘library anxiety’, ‘information seeking anxiety’ and ‘information anxiety’. These concepts existed independently and parallelly and attracted much attention from the researchers of their respective fields. The existing literature lacked a study establishing a relationship among these three concepts which led to the idea of a general model of information anxiety to inform researchers as well as professionals dealing with policy and practice. This model represents information anxiety as the general and broader concept nesting information seeking anxiety as its sub-set and library anxiety as a further sub-set. It highlights the development of library anxiety, information seeking anxiety, and information anxiety over time. It also outlines the theoretical and practical implications of information anxiety for information services, especially information literacy (IL) instruction, as previous research reported it as a potential determinant of lower levels of information anxiety. The researchers emphasize the necessity for a need-based IL curriculum for the alleviation of users’ anxiety related to information related tasks. The future directions for research on the proposed area considering the contemporary information environment have been discussed towards the end

Evidence on Psychometric Properties of Scales Assessing Information Related Anxieties: A Systematic Review

This systematic review examined the evidence of psychometric properties of scales available in studies reporting surveys measuring information related anxieties such as library anxiety, information seeking anxiety, and information anxiety. A systematic search in four databases such as Web of Science, Scopus, LISA, and LISTA was carried out using the keywords \u27library anxiety\u27, \u27information anxiety\u27, \u27information seeking anxiety\u27, and \u27information seeking\u27 AND \u27anxiety\u27. This review included those studies reporting the use of any scale measuring information related anxiety published in the English language and included all type of documents (e.g. journal articles, conference papers, book chapters, theses/dissertations, research reports). The screening process resulted in 45 studies meeting the eligibility criterion. The extracted data included author names, year of publication, type of scale used, scale title, background, type of construct assessed, number of items in the scale, scale origin, studies reporting use, studies contributing psychometric information, scale availability, and psychometric properties reported. The results indicated nine instruments assessing information-related anxieties. The classical test theory was applied for eight instruments. No psychometric properties were reported for a single instrument. Most psychometric instruments were developed in the United States. Face/Content validity through experts, construct validity through exploratory and confirmatory factor analysis, and internal consistency reliability through Cronbach alpha was the most commonly used psychometric analysis. None of these studies applied the Rasch model of modern item response theory for psychometric examination. This review has serious implications on the inferences drawn by the practitioners and researchers based on the earlier assessment of information related anxieties. It suggests the development of standards for not only designing new psychometric tests but also for the use and reporting of such tests. This study contributes to the existing research on information-related anxieties by systematic reviewing the evidence of psychometric properties as no such study available so far

Takayasu’s Disease: A Rear Case of Occlusive Vascular Disorder of Brain

Takayasu’s Disease is a type of inflammatory disease which involve the vessels at different levels. This disease is important for remission and relapse. It usually affects the younger age group resulting in morbidity of the most valuable group of society. Its symptoms are non specific but it may present with the involvement of different organs of the body like heart, renal impairment, fibrosis of retroperitoneal area. Diagnostic tool is Ultrasonography but definitive diagnosis is achieved with the help of CT angiography at the level of aortic arch, neck and brain. Treatment includes both medical and surgical options. Most of the time relapse occurred but with various treatment we can prolong the remission span and improve the quality of life of the patient

Marketing in Online Businesses: The Case of Migrant Entrepreneurial Businesses in the UK

The study presents an empirical investigation of the marketing activities undertaken by online businesses owned by migrant entrepreneurs and is framed by the theoretical lens of entrepreneurial marketing. Key informant interviews are undertaken with 22 entrepreneurs operating online businesses in the UK and augmented by other sources of data. The study finds that the resources available to the entrepreneurs are shaped by their migrant heritage and that they draw on these resources to market their online businesses. The study also finds that, consistent with notions from entrepreneurial marketing, the online nature of their businesses allow the entrepreneurs to meet their own needs and preferences, which are also shaped by their migrant heritage. The study is important since it provides empirical evidence and a theoretically grounded understanding of how online businesses offer migrant entrepreneurs the opportunity to break out of the low growth, low margin, vacancy chain openings and enter high growth, high margin, post-industrial sectors

Optimising 3D Printing Parameters through Experimental Techniques and ANOVA-Based Statistical Analysis

Additive Manufacturing (AM) has revolutionised the manufacturing industry by enabling the fabrication of complex geometries and designs with ease. 3D printing - Fused Deposition Modelling (FDM) has emerged as a prevalent technique, owing to its versatility and cost-effectiveness. However, the FDM process is complex and depends on multiple parameters, which makes it challenging to obtain high-quality and consistent 3D printed components. The purpose of this study is to simplify the printing process for users and potentially improve the overall quality and consistency of printed objects. This research delved into optimising 3D printing parameters, specifically raster orientation and in-fill speed, for PLA material through three experimental studies. The mean effect of these parameters and the effects of their interaction through analysis of variance (ANOVA) on tensile properties were also discussed. Initial experiments identified the most suitable parameters and its optimal values for PLA, which were then applied to five different materials: PETG, PLA tough, Recycle PLA, Plain PLA, and ABS. Tensile tests assessed the printed parts, and Scanning Electron Microscopy (SEM) was employed to analyse fracture interfaces and material failure causes. This study identified a raster of 45°/ -45° and 30 mm/sec infill speed as optimal for diverse 3D printing materials. Notably, ABS, PETG, and tough PLA exhibited better tensile strengths, surpassing manufacturer benchmarks. However, Plain PLA and Recycled PLA, despite lower tensile strengths, proved valuable for specific applications. Interestingly, all tested materials showed greater flexibility than manufacturer recommendations, suggesting their suitability in scenarios needing both strength and flexibility. This study's results offer promising avenues for refining 3D printing practices, to the advantage of all users. The findings from this study offer significant insights for future research to investigate the effect of other process parameters on the quality of 3D printed parts, leading to further advancements of AM