The purpose of this study was to determine that a behavioral lifestyle modification approach to weight loss changes participants' dietary intake and physical activity levels and that these changes were associated with weight loss and weight loss maintenance. Behavioral factors important in other weight control studies were also investigated to see if they are important indicators of successful weight control in this program as well. A group of previously validated questionnaires, along with a weight history written for this study, was administered to current participants in Providence Health System's Smart CHOICES program both before and after program participation. The same questionnaires were administered to past participants in a one-time follow-up for the CHOICES program approximately 2 years after program completion. The study found that current participant successful weight losers did decrease their percentage of energy intake from fat more than did non-successful weight losers over the course of the program. Also, successful weight losers decreased their caloric intake and increased physical activity levels during the program and these changes did not occur in non-successful weight losers. The Eating Inventory scales for cognitive restraint and Westenhoefer's flexible control showed expected increases and disinhibition and hunger scores showed expected decreases among successful weight losers. However, non-successful weight losers showed these same changes except for the hunger scores, which did not decrease during the program. There were no differences found between past participant weight loss maintainers and non-maintainers in caloric intake, percentage fat intake, physical activity levels, Eating Inventory scales, or flexible and rigid control. When compared to successful weight losers among the current participants, there were suggestions that past participant weight loss maintainers and non-maintainers regressed toward their pre-treatment levels in percentage of fat intake, physical activity levels, and flexible control scores over time. While the Smart CHOICES program is effective in bringing about short-term behavior change to produce weight loss, maintenance of weight loss is a problem in this program as it is in other lifestyle modification programs. The factors differentiating successful weight maintenance from weight regain after loss in this program were not identified. / Graduation date: 2002

Fifty-five wrestlers from Tucson, Arizona were studied to develop equations using anthropometric measurements to predict a wrestler's minimum wrestling weight (MWW). This sample was also used to cross-validate seven equations that predict MWW by using anthropometric measures. All estimates of percent fat and MWW were validated by densitometry. The mean age, weight, percent fat and MWW for this sample, with standard deviations, were 16.8 ± 1.1 yrs, 63.7 ± 12.7 kg, 8.8 ± 5.49 percent, and 60.6 ± 9.49 kg. Using multiple regression analysis, the best combination of variables predicted MWW with an adjusted R2 of.93 and standard error of estimate (SEE) of 2.45 kg. The next best equation from this sample predicted MWW with an adjusted R2 of.91 and SEE of 2.8 kg. All seven of the equations from other samples were successfully cross validated on this sample. These equations predicted the criterion MWW with respective adjusted R2's and SEE's ranging from.91 and 2.84 kg to.79 and 4.28 kg.

Many phenotypes are controlled by factors which include the genes, the environment, interactions between genes and interaction between the genotypes and the environment. Great strides have been made to understand how these various factors affect traits of agricultural, medical and environmental importance. The chicken is regarded as a model organism whose study would not only assist efforts towards increased agricultural productivity but also provide insight into the genetic determination of traits with potential application in understanding human health and disease. Detection of genomic regions or loci responsible for controlling quantitative traits (QTL) in poultry has focussed mainly on growth and production traits with limited information on reproductive traits. Most of the reported results have used additive-dominance models which are easy to implement because they ignore epistatic gene action despite indications that it may be important for traits with low heritability and high heterosis. The thesis presents results on the detection of loci and genetic mechanisms involved in sexual maturity traits through modelling both additive-dominance gene actions and epistasis. The study was conducted on an F2 broiler x White Leghorn layer cross for QTL detection for age, weight, abdominal fat, ovary weight, oviduct weight, comb weight, number of ovarian yellow follicles, a score for the persistence of the right oviduct and bone density. In addition, body weight QTL at 3, 6, 12, 24, 48 and 72 weeks of age, QTL for growth rate between the successive ages and QTL for the parameters of the growth curve were also detected. Most of the QTL for traits at sexual maturity acted additively. A few of the QTL explained a modest proportion of the phenotypic variation with most of the QTL explaining a small component of the cumulative proportion of the variation explained by the QTL. Body weight QTL were critical in determining the attainment of puberty. The broiler allele had positive effects on weight at first egg and negative effects on age at first egg. Most QTL affecting weight at first egg overlapped with QTL for age at first egg and for early growth rate (6-9 weeks) suggesting that growth rate QTL are intimately related to the onset of puberty. Specific QTL for early and adult growth were detected but most QTL had varying influence on growth throughout life. Chromosome 4 harboured most of QTL for the assessed traits which explained the highest proportion of the phenotypic variation in the traits confirming its critical role in influencing traits of economic importance. There was no evidence for epistasis for almost all the studied traits. Evidence for role of epistasis was significant for ovary weight and suggestive for both growth rate and abdominal fat.

No description available.

A avaliação nutricional e o acompanhamento do estado nutricional dos pacientes de uma instituição são fundamentais para o planejamento e avaliação do serviço nutricional oferecido. Dentre os métodos de avaliação, a antropometria é recomendada por ser fácil, rápida e segura para ser empregada. Dentre os dados mais comuns o peso e a altura costumam fundamentar a avaliação do estado nutricional, e fundamentam os cálculos da terapia nutricional e doses farmacológicas. Visto que, tais medidas são difíceis de serem realizadas em pacientes acamados, e que na literatura, as equações sugeridas para estimativa de altura e peso são baseadas em amostras de idosos. O objetivo deste trabalho foi de verificar a adequação destas fórmulas, e desenvolver equações apropriadas, para a população hospitalizada local. A metodologia utilizada para elaboração das equações preditivas foram a antropometria, dobras cutâneas, circunferências, comprimentos; e bioimpedância. Considerando que as formas de estimativa de peso e altura sugeridas na literatura apresentaram diferença significativa das medidas nesta amostra; e visando facilitar a metodologia de estimativa de peso, foram desenvolvidas quatro equações para peso e duas para altura. As novas equações parecem ser apropriadas, sendo a mais simples delas, para estimativa de peso, a equação: Peso (kg) = 0,8956 (circunferência do braço, cm) + 0,3858 (circunferência abdominal, cm) + 1,1180 (circunferência da panturrilha, cm) - 31,759 (r = 0,88 e p> 0,05); e Altura (m) = 83,8750 - 4,3810 (masculino = 2 e feminino = 1) - 0,0872 (idade ,anos) + 1,0840 (meia envergadura, cm), (r = 0,86 e p > 0,05). Sugerimos que estas equações possam ser utilizadas para estimar peso e altura de pacientes acamados. / Anthropometry, including weight and height, is considered as an easy, a fast and a safe procedure for nutritional status evaluation. Body weight (W) and height (H) are both indicators of nutritional status changes and together with others body measurement, is a tool for nutritional therapy and medicine doses prescription. Regarding the impossibility to obtain these measurements from those individuals who cannot stand, formulas to estimate weight and height, based on elderly subjects, have been used for all adults patients. The aim of the current protocol was search, for easily acquired anthropometric measurements and bioimpedance, formulas to estimate weight and height from hospitalized patients. For the construction of predictive equations, anthropometry (skinfold thickness, circumferences, lengths) and bioelectrical impedance analysis were applied. Four equations suggested to estimate body weight, and two for body height the simplest are: W (Kg) = 0,8956 (arm circumference, cm) + 0,3858 (abdominal circumference, cm) + 1,1180 (calf circumference, cm) - 31,759 ( r = 0,88, p > 0,05); and H (m) = 83,8750 - 4,3810 (male = 1 e female = 2) - 0,0872 (age ,year) + 1,0840 (half spread ,cm) (r = 0,86 e p > 0,05). Residuals analysis showed that the error from both formulas was less than 5% (95% range variation). Therefore, when is impossible to get weight or height we suggested the use of those formulas.

Chu Ching Yan. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2001. / Includes bibliographical references (leaves 170-189). / Abstracts in English and Chinese. / Chapter 1 --- General Introduction --- p.1 / Chapter 1.1 --- Classes of Fatty Acids --- p.3 / Chapter 1.2 --- Polyunsaturated Fatty Acids (n-6 & n-3) --- p.4 / Chapter 1.2.1 --- "High Fish Oil Content in Diet, High n-3 PUFAs Intake, Fight against Cardiovascular Risk" --- p.4 / Chapter 1.2.2 --- n-3 Fatty Acids Improve Hypertension --- p.7 / Chapter 1.2.3 --- n-3 Fatty Acids Protect from Atherosclerosis --- p.8 / Chapter 1.2.4 --- PUFAs are Beneficial in Inflammation --- p.11 / Chapter 1.2.5 --- n-3 PUFAs Help to Control Tumour Growth --- p.13 / Chapter 1.3 --- Obesity and Eating Disorder --- p.14 / Chapter 1.3.1 --- "Obesity, a Companion of the Modern World" --- p.14 / Chapter 1.3.2 --- Health Risks Related to Obesity --- p.16 / Chapter 1.3.3 --- Management of Obesity --- p.19 / Chapter 1.3.4 --- Care Must be Taken to Prevent the Development of Eating Disorder or Other Psychological Disturbances during Weight Loss Programme --- p.21 / Chapter 2 --- Weight Cycling with ChowDiet --- p.24 / Chapter 2.1 --- Introduction --- p.24 / Chapter 2.1.1 --- Definition of Weight Cycling --- p.25 / Chapter 2.1.2 --- Incentives Leading to Weight Cycling --- p.26 / Chapter 2.1.3 --- Problems Aroused by Weight Cycling --- p.26 / Chapter 2.1.3.1 --- "Food Preference, Efficiency and Expenditure" --- p.27 / Chapter 2.1.3.2 --- Increased Overall and Central Adiposity --- p.28 / Chapter 2.1.3.3 --- Increased Morbidity and Mortality of Cardiovascular Disease --- p.29 / Chapter 2.1.3.4 --- Psychological Impact and Social Consequences --- p.30 / Chapter 2.2 --- Objective --- p.30 / Chapter 2.3 --- Materials and Methods --- p.31 / Chapter 2.3.1 --- Animal Handling --- p.31 / Chapter 2.3.2 --- Lipid Analysis --- p.35 / Chapter 2.3.2.1 --- Adipose Tissues --- p.35 / Chapter 2.3.2.2 --- Carcass --- p.36 / Chapter 2.3.3 --- Proximate Analysis --- p.37 / Chapter 2.3.3.1 --- Crude Fat --- p.37 / Chapter 2.3.3.2 --- Crude Protein --- p.38 / Chapter 2.3.3.3 --- Moisture --- p.40 / Chapter 2.3.3.4 --- Ash --- p.40 / Chapter 2.3.4 --- Serum Analysis --- p.41 / Chapter 2.3.4.1 --- Serum Triglycerides --- p.41 / Chapter 2.3.4.2 --- Serum Cholesterol --- p.42 / Chapter 2.4 --- Results --- p.44 / Chapter 2.4.1 --- Body Weight --- p.44 / Chapter 2.4.2 --- Food Intake --- p.44 / Chapter 2.4.3 --- Organ Weight --- p.47 / Chapter 2.4.3.1 --- Liver --- p.47 / Chapter 2.4.3.2 --- Adipose Tissues --- p.47 / Chapter 2.4.4 --- Lipid Analysis --- p.52 / Chapter 2.4.4.1 --- Adipose Tissues --- p.52 / Chapter 2.4.4.2 --- Carcass --- p.52 / Chapter 2.4.5 --- Proximate Analysis --- p.60 / Chapter 2.4.5.1 --- Crude Fat --- p.60 / Chapter 2.4.5.2 --- Moisture --- p.60 / Chapter 2.4.5.3 --- Crude Protein and Ash --- p.62 / Chapter 2.4.6 --- Serum Analysis --- p.64 / Chapter 2.4.6.1 --- Serum Triglycerides --- p.64 / Chapter 2.4.6.2 --- Serum Cholesterol --- p.64 / Chapter 2.5 --- Discussion --- p.66 / Chapter 3 --- Degrees of Food Restriction on Bod y Fa tty Acid Composition --- p.71 / Chapter 3.1 --- Introduction --- p.71 / Chapter 3.1.1 --- Skipping Breakfast --- p.71 / Chapter 3.1.2 --- "Nibbling, Grazing vs Gorging" --- p.72 / Chapter 3.1.3 --- Reducing Food Intake in Meals --- p.74 / Chapter 3.1.3.1 --- Anti-Aging Action --- p.74 / Chapter 3.1.3.2 --- Effects on Other Health Issues --- p.75 / Chapter 3.1.3.3 --- Energy Expenditure --- p.77 / Chapter 3.2 --- Objective --- p.78 / Chapter 3.3 --- Materials and Methods --- p.79 / Chapter 3.3.1 --- Animal Handling --- p.79 / Chapter 3.4 --- Results --- p.81 / Chapter 3.4.1 --- Body Weight --- p.81 / Chapter 3.4.2 --- Food Intake --- p.81 / Chapter 3.4.3 --- Organ Weight --- p.83 / Chapter 3.4.3.1 --- Liver --- p.83 / Chapter 3.4.3.2 --- Adipose Tissues --- p.83 / Chapter 3.4.4 --- Lipid Analysis --- p.88 / Chapter 3.4.4.1 --- Adipose Tissues --- p.88 / Chapter 3.4.4.2 --- Carcass --- p.88 / Chapter 3.4.5 --- Proximate Analysis --- p.102 / Chapter 3.4.5.1 --- Crude Fat --- p.102 / Chapter 3.4.5.2 --- Moisture --- p.102 / Chapter 3.4.5.3 --- Crude Protein and Ash --- p.103 / Chapter 3.4.6 --- Serum Analysis --- p.106 / Chapter 3.4.6.1 --- Serum Triglycerides --- p.106 / Chapter 3.4.6.2 --- Serum Cholesterol --- p.106 / Chapter 3.5 --- Discussion --- p.108 / Chapter 4 --- Food Restriction with Diets Containing Various Amount of FAT --- p.112 / Chapter 4.1 --- Introduction --- p.112 / Chapter 4.1.1 --- Adverse Effects of High-Fat Diets --- p.113 / Chapter 4.1.2 --- Adverse Effects of Low-Fat Diets --- p.114 / Chapter 4.2 --- Objective --- p.116 / Chapter 4.3 --- Materials and Methods --- p.117 / Chapter 4.3.1 --- Animal Handling --- p.117 / Chapter 4.4 --- Results --- p.120 / Chapter 4.4.1 --- Body Weight --- p.120 / Chapter 4.4.2 --- Food Intake --- p.120 / Chapter 4.4.3 --- Organ Weight --- p.122 / Chapter 4.4.3.1 --- Liver --- p.122 / Chapter 4.4.3.2 --- Adipose Tissues --- p.122 / Chapter 4.4.4 --- Lipid Analysis --- p.127 / Chapter 4.4.4.1 --- Adipose Tissues --- p.127 / Chapter 4.4.4.2 --- Carcass --- p.127 / Chapter 4.4.5 --- Proximate Analysis --- p.147 / Chapter 4.4.5.1 --- Crude Fat --- p.147 / Chapter 4.4.5.2 --- Moisture --- p.147 / Chapter 4.4.5.3 --- Crude Protein and Ash --- p.148 / Chapter 4.4.6 --- Serum Analysis --- p.151 / Chapter 4.4.6.1 --- Serum Triglycerides --- p.151 / Chapter 4.4.6.2 --- Serum Cholesterol --- p.151 / Chapter 4.5 --- Discussion --- p.153 / Chapter 5 --- Future Prospects --- p.159 / Chapter 5.1 --- Leptin --- p.159 / Chapter 5.2 --- Enzymes --- p.162 / Chapter 6 --- Conclusion --- p.166 / Chapter 7 --- References --- p.170

Orientador: Alex Sandro Campos Maia / Banca: Iran José Oliveira da Silva / Banca: Evaldo Antônio Lencioni Titto / Banca: Glauco de Souza Rolim / Banca: Kênia Cardoso Bícego / Resumo: Objetivou-se a partir deste estudo avaliar a dinâmica das trocas térmicas ocorridas no trato respiratório de animais de interesse zootécnico (bovinos e caprinos), em ambiente tropical, utilizando a técnica de espirometria de fluxo contínuo com uso de máscara facial. Foram realizados quatro estudos de espirometria e calorimetria indireta com três raças da espécie bovina, Nelore, Guzerá e Jersey e uma da espécie caprina da raça Anglo-nubiana. A realização da espirometria e da calorimetria indireta foi feita por meio de uso de máscara facial ajustada ao focinho do animal. A produção de calor metabólico (q"MET), ventilação (VE), frequência respiratória (FR), volume respiratório corrente (VRC) e produção e consumo de CO2 (VCO2) e O2 (VO2), respectivamente, foram mensuradas simultaneamente, além das trocas de calor do animal por evaporação e convecção pelo trato respiratório com o meio ambiente. Avaliações de espirometria e calorimetria indireta com utilização de máscara facial em animais de produção em ambiente natural mostraram-se eficientes para as espécies estudadas uma função não linear entre VRC, VE, VO2 e FR por unidade de peso e peso corporal foi encontrada; animais de menor peso corporal apresentam maiores VRC, VE, VO2 e FR e consequentemente uma maior produção de calor metabólico por unidade de peso corporal do que animais maiores. Em faixas de temperatura do ar de 22 a 36 °C os animais Guzerá, Nelore, Jersey e Anglo Nubianas não tem um aumento significativo nas funções respiratórias porém, o volume de CH4 apresenta uma relação inversa com o aumento da temperatura do ar. As perdas de calor pelo trato respiratório por evaporação aumentaram com o aumento da temperatura do ar, sendo essa a principal via de perda de calor no trato respiratório. Modelos de regressão apresentados para estimar a evaporação respiratória em bovinos da raça... / Abstract: In order to study the respiratory physiology and the dynamics of the heat exchange occurred in the respiratory tract of livestock interest of animals in tropical environment using a continuous flow of spirometry technique with use of facial mask. Four studies of spirometry and indirect calorimetry were performed in two species of livestock interest animals, and these three races of bovine animals, Nellore, Guzerat and Jersey and a goats Anglo-Nubian breed. The spirometry and indirect calorimetry was performed by use of the face mask adjust to the animal's muzzle. The metabolic heat production (q"MET), ventilation (VE), respiratory rate (RR), tidal volume (VT) and production and consumption of CO2 (VCO2) and O2 (VO2), respectively, were measured simultaneously, as well of the animal's heat exchange by convection and by evaporation with the respiratory tract environment. Spirometry and indirect calorimetry techniques with use of facial masks in livestock animals in a natural environment were effective for the species studied. A nonlinear function between VRC, VE, VO2 and FR per unit weight as function of body weight was found and the lighter animals had a higher VRC, VE, VO2 and FR and thus greater metabolic heat production per unit weight than largest animals. In air temperature between 22-36 °C the Guzerat, Nellore, Jersey and Anglo Nubian has no significant increase respiratory function, but the volume of CH4 has an inverse relation with air temperature. Also heat losses the respiratory tract by evaporation increased with increasing air temperature, and this is the main heat loss through the respiratory tract. Regression models presented to estimate the respiratory evaporation in cattle Guzerat, Nellore, Jersey and the Anglo Nubian goat using environmental and physiological parameters were well efficient in these conditions / Doutor

Typescript (photocopy). / Digitized by Kansas Correctional Industries

This thesis explores the genetic characterization of the mechanisms underlying complex traits in chicken through the use and development of bioinformatics tools. The characterization of quantitative trait loci controlling complex traits has proven to be very challenging. This thesis comprises the study of experimental designs, annotation procedures and functional analyses. These represent some of the main ‘bottlenecks’ involved in the integration of QTLs with the biological interpretation of high-throughput technologies. The thesis begins with an investigation of the bioinformatics tools and procedures available for genome research, briefly reviewing microarray technology and commonly applied experimental designs. A targeted experimental design based on the concept of genetical genomics is then presented and applied in order to study a known functional QTL responsible for chicken body weight. This approach contrasts the gene expression levels of two alternative QTL genotypes, hence narrowing the QTL-phenotype gap, and, giving a direct quantification of the link between the genotypes and the genetic responses. Potential candidate genes responsible for the chicken body weight QTL are identified by using the location of the genes, their expression and biological significance. In order to deal with the multiple sources of information and exploit the data effectively, a systematic approach and a relational database were developed to improve the annotation of the probes of the ARK-Genomics G. gallus 13K v4.0 cDNA array utilized on the experiment. To follow up the investigation of the targeted genetical genomics study, a detailed functional analysis is performed on the dataset. The aim is to identify the downstream effects through the identification of functional variation found in pathways, and secondly to achieve a further characterization of potential candidate genes by using comparative genomics and sequence analyses. Finally the investigation of the body weight QTL syntenic regions and their reported QTLs are presented.

Thesis (M.Sc. (Animal Production)) --University of Limpopo, 2011 / Crossbreeding is one of the tools for exploiting genetic variation. The main purpose of crossing chickens is to produce superior crosses (i.e. make use of hybrid vigor), improve fitness and fertility traits.This study was carried out at the University of Limpopo Experimental Farm located in Limpopo, South Africa. The objective of the study was to evaluate the growth performance of differentpurebred and crossbred chicken genotypes. A 3 x 3 complete diallel mating system involving two indigenous breeds namely Venda (V) and Naked Neck (N) and one commercial broiler breed, Ross 308 (R), were used to produce three purebred (V x V, N x N, R x R), three crossbreds (R x V, R x N, V x N) and three reciprocals (V x R, N x R, N x V).The nine genetic groups were rearedfrom hatch to 13 weeks of age in a deep litter open house. Body weights of 180 chicks (20 chicks per genetic group), recorded at 0, 3, 5, 7, 9, 11, and 13 weeks of age, were used to estimate heterosis, general (GCA) and specific (SCA) combining abilities, maternal ability and reciprocal or sex-linked effects on body weights. Results showed that the Ross 308 had the heaviest body weight at all weeks of measurement except for hatch. With respect to crosses, the reciprocal V x R and the cross R x V had the heaviest body weights at 13 weeks (2448.40 and 2131.50 grams, respectively), although N x R had heavier body weight than R x V at all weeks of measurement except for hatch and 13th week. Results of heterosis estimates indicated that crossing between Venda male and Ross 308 female as well as between the Venda male and Naked Neck femalegave the highest heterotic effects for body weight(11.01% and 10.33%, respectively).General Combining Ability was significant (P≤0.01) for body weight from hatch to 13 weeks of age while SCA and Reciprocal effects (RE) were both significant (P≤0.05) for body weight at all ages of measurement except for hatch weight. The Ross 308 chicken gave the highest positive effect of GCA for body weight except for hatch weight. Venda sire crossed with Naked Neck dams gave the highest and positive effects of SCA for body weight. Naked Neck sire crossed with Venda dams had the highest positive estimate of RE for body weight except for the 13th week. Results show that using Venda chickens as a paternal breed in crossing with Naked Neck and Ross 308 females may improve growth performance of indigenous chickens.