Fat deposition and seasonal variation in body composition of red foxes (Vulpes vulpes) in Australia

1999 ◽  
Vol 77 (3) ◽  
pp. 406-412 ◽  
Author(s):  
Roy K Winstanley ◽  
William A Buttemer ◽  
Glen Saunders
Keyword(s):  
Body Composition ◽  
Protein Content ◽  
Body Fat ◽  
Vulpes Vulpes ◽  
Reproductive Period ◽  
Male Body ◽  
Red Foxes ◽  
Body Protein ◽  
Fat Reserves ◽  
Total Body

We evaluated body composition of 165 adult red foxes (Vulpes vulpes) collected monthly from August 1995 to July 1996 in New South Wales, Australia. Total body fat content and estimated protein content were determined as a percentage of skinned body mass (SBM) using chemical analysis of homogenized samples. Mean percent body fat varied significantly over the year (P < 0.001) and differed significantly between the sexes in each month (P = 0.039). Male body fat reserves peaked at 13% of SBM in June, prior to breeding, and female body fat peaked at 16% of SBM in July during gestation. Body fat reserves declined rapidly in both sexes from September through November, reaching average values of 3-4% SBM by the time of weaning (November). Estimates of total body protein content varied significantly over the year (P < 0.001) but did not differ significantly between the sexes (P = 0.745). Protein content was lowest but stable at 21-22% of SBM from August to November and increased rapidly by December. Protein content then remained stable at 23-25% of SBM from January through July. The low body protein content in August through November corresponds to the decline in body fat reserves of foxes. These foxes appear to accumulate fat and protein reserves throughout the non-reproductive phase of their annual cycle and then deplete these stores during their reproductive period.

scholarly journals Prediction of the <i>in vivo</i> Body Composition of Pigs Based on Cross- Sectional Region Analysis of Dual Energy X-Ray Absorptiometry (DXA) Scans

2002 ◽  
Vol 45 (6) ◽  
pp. 535-545
Author(s):  
A. D. Mitchell ◽  
A. Scholz ◽  
V. Pursel
Keyword(s):  
Body Composition ◽  
Chemical Analysis ◽  
Body Fat ◽  
The Body ◽  
Cross Sectional ◽  
Body Protein ◽  
Total Body Fat ◽  
Total Body ◽  
Dxa Scans

Abstract. The purpose of this study was to evaluate the use of a cross-sectional scan as an alternative to the total body DXA scan for predicting the body composition of pigs in vivo. A total of 212 pigs (56 to 138 kg live body weight) were scanned by DXA. The DXA scans were analyzed for percentage fat and lean in the total body and in 14 cross-sections (57.6 mm wide): 5 in the front leg/thoracic region, 4 in the abdominal region, and 5 in the back leg region. Regression analysis was used to compare total body and cross-sectional DXA results and chemical analysis of total body fat, protein and water. The relation (R2) between the percentage fat in individual slices and the percentage of total body fat measured by DXA ranged from 0.78 to 0.97 and by chemical analysis from 0.71 to 0.85, respectively. The relation between the percentage of lean in the individual slices and chemical analysis for percentage of total body protein and water ranged from 0.48 to 0.60 and 0.56 to 0.76, respectively. These results indicate that total body composition of the pig can be predicted (accurately) by performing a time-saving single-pass cross-sectional scan.

scholarly journals 349 Empty body composition and retained energy of Jersey steers using an aggressive implant strategy

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 95-95
Author(s):  
Tylo J Kirkpatrick ◽  
Kaitlyn Wesley ◽  
Sierra L Pillmore ◽  
Kimberly Cooper ◽  
Travis Tennant ◽  
...  
Keyword(s):  
Body Composition ◽  
Body Weight ◽  
Body Fat ◽  
Crude Protein ◽  
Proximate Analysis ◽  
Negative Control ◽  
Feeding Period ◽  
Initial Body Weight ◽  
Body Protein ◽  
Total Body

Abstract This experiment was designed to quantify the empty body composition of Jersey steers administered an aggressive implant strategy. Jersey steers {n = 30; initial body weight (BW) 183 ± 43 kg} were randomly assigned to one of two implant strategies: negative control (CON), or implanted with Revalor 200 (200 mg trenbalone acetate / 20 mg estradiol 17-β; (REV) every 70 d (d 0, d 70, d 140, d 210, d 280, d 350) during a 420 d feeding period. Steers were harvested on d 421; 6 CON and 6 REV steers were randomly selected for collection of blood, hide, ground viscera, bone, and ground lean and fat to determine empty body composition. Proximate analysis was completed for each sample to determine total body percentages of moisture, crude protein, fat, and ash. Data were analyzed via independent t-test. Percentage empty body moisture (46.48% CON vs 49.69% REV) and empty body protein (15.32% CON vs 17.58% REV) were greater (P &lt; 0.01) in REV cattle. In contrast empty body fat (33.51% CON vs 26.93% REV) was greater (P &lt; 0.01) for CON cattle. Empty body ash did not differ (P &gt; 0.10; 4.69% CON vs 5.80% REV) between treatments. Negative control steers contained a total empty body protein to total empty body fat ratio of 0.44:1 compared to 0.62:1 for REV steers. These data suggest that an aggressive implant strategy alters composition of gain during the finishing of Jersey steers toward increased protein and decreased fat.

Body composition of harp seals

1994 ◽  
Vol 72 (3) ◽  
pp. 545-551 ◽  
Author(s):  
Rosemary Gales ◽  
Deane Renouf ◽  
Elizabeth Noseworthy
Keyword(s):  
Body Composition ◽  
Body Mass ◽  
Body Fat ◽  
Body Condition ◽  
Total Body Water ◽  
Body Water ◽  
Accurate Estimation ◽  
Body Protein ◽  
Wide Range ◽  
Total Body

Using chemical analysis we measured the composition of 26 harp seals (Phoca groenlandica) representing both sexes, aged between 3 months and 30 years, and encompassing a wide range of body conditions. Predictive relationships between total body water and total body fat contents, total body protein content, and gross energy were calculated. These equations allow accurate estimation of harp seal body composition provided total body water content and body mass are known. Using these data we compared the accuracy of three existing equations that have been used to predict body fat content of other species. We found that in adult harp seals, lean body mass has a relatively stable hydration of 70% but the hydration of blubber varied with body condition. Lipid content, and thus energy density of blubber, increased with increasing body condition.

Morphological change and fat accumulation in juvenile red foxes (Vulpes vulpes) in the Central Tablelands of New South Wales

2000 ◽  
Vol 27 (5) ◽  
pp. 525
Author(s):  
Roy K. Winstanley
Keyword(s):  
Body Mass ◽  
Body Fat ◽  
Vulpes Vulpes ◽  
New South ◽  
New South Wales ◽  
First Year ◽  
Male Body ◽  
Energy Reserves ◽  
Red Foxes ◽  
South Wales

Juvenile red foxes (Vulpes vulpes) reach sexual maturation within 10 months of parturition. During this time juveniles need to manage their energy reserves to fuel maintenance metabolism, growth and reproduction. To determine juvenile growth rates and body energy reserves, I measured body mass, morphology, and estimated body fat, in free-living red foxes from approximately 8 weeks of age through to 1 year old. Foxes (n = 163) were sampled monthly from August 1995 to July 1996 in the Central Tablelands of New South Wales. Mean body mass of male and female juvenile foxes was indistinguishable from adult body mass by February, at 16 weeks of age (males 4500 g, females 4200 g). Skeletal measurements of body and forelimb length in both sexes also attained adult proportions by February. Further changes in morphology were minimal in first-year foxes. Total body fat was estimated indirectly using a kidney fat index. Estimated juvenile body fat remained low and stable (6%) in both sexes from December through March. Male body fat peaked in August (11%) but was low in July during mating and also September and October whilst females were denning. Estimated body fat of females peaked in August–September (13%) but declined sharply in October after parturition. In addition, 73% of first-year females sampled during August–October were either pregnant or had recently given birth.

Evaluation of several indices for assessment of coyote (Canis latrans) body composition

1995 ◽  
Vol 73 (9) ◽  
pp. 1620-1624 ◽  
Author(s):  
Jean Huot ◽  
Marie-Lazarine Poulle ◽  
Michel Crête
Keyword(s):  
Body Composition ◽  
Canis Latrans ◽  
The Body ◽  
Marrow Fat ◽  
Body Protein ◽  
Fat Reserves ◽  
Kidney Fat ◽  
Kidney Fat Index ◽  
Total Body

The body composition of 27 coyotes (Canis latrans) of different ages and both sexes was determined on the basis of chemical analyses of homogenized samples of viscera, carcass, and skin. Regression analyses were used to identify the best indices for estimating fat (lipid reserves), protein, and water body contents. A combined index based on the kidney fat index and the percentage of femur marrow fat was the best indicator of fat reserves. Body mass (whole or skinned carcass) and eviscerated carcass mass were the best predictors of total body protein and total body water contents. A combination of indices is proposed to provide postmortem or in vivo estimates of coyote body composition.

scholarly journals 224 A method for estimating the target for protein energy retention in sheep

2020 ◽  
Vol 98 (Supplement_4) ◽  
pp. 143-143
Author(s):  
Holland C Dougherty ◽  
Hutton Oddy ◽  
Mark Evered ◽  
James W Oltjen
Keyword(s):  
Body Composition ◽  
Protein Content ◽  
Heat Production ◽  
Crude Protein ◽  
Muscle Protein ◽  
Energy Utilization ◽  
Body Protein ◽  
Protein Mass ◽  
Reference Weight ◽  
Animal Growth

Abstract Target protein mass at maturity is a common “attractor” used in animal models to derive components of animal growth. This target muscle protein at maturity, M*, is used as a driver of a model of animal growth and body composition with pools representing muscle and visceral protein; where viscera is heart, lungs, liver, kidneys, reticulorumen and gastrointestinal tract; and muscle is non-visceral protein. This M* term then drives changes in protein mass and heat production, based on literature data stating that heat production scales linearly with protein mass but not liveweight. This led us to adopt a modelling approach where energy utilization is directly related to protein content of the animal, and energy not lost as heat or deposited as protein is fat. To maintain continuity with existing feeding systems we estimate M* from Standard Reference Weight (SRW) as follows: M* (kJ) = SRW * SHRINK * (1-FMAT) * (MUSC) * (CPM)* 23800. Where SRW is standard reference weight (kg), SHRINK is the ratio of empty body to live weight (0.86), FMAT is proportion of fat in the empty body at maturity (0.30), MUSC is the proportion of empty body protein that is in muscle (0.85), CPM is the crude protein content of fat-free muscle at maturity (0.21), and 23800 is the energetic content (kJ) of a kilogram of crude protein. Values for SHRINK, FMAT, MUSC and CPM were derived from a synthesis of our own experimental data and the literature. For sheep, these values show M* to be: M* (kJ) = SRW * 0.86* (1-0.3) * 0.85 * 0.21 *23800 = SRW * 2557. This method allows for use of existing knowledge regarding standard reference weight and other parameters in estimating target muscle mass at maturity, as part of a model of body composition and performance in ruminants.

scholarly journals Total Body Fat Content versus BMI in 4-Year-Old Healthy Swedish Children

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Elisabet Forsum ◽  
Eva Flinke Carlsson ◽  
Hanna Henriksson ◽  
Pontus Henriksson ◽  
Marie Löf
Keyword(s):  
Body Composition ◽  
Body Fat ◽  
Fat Content ◽  
Overweight And Obesity ◽  
Air Displacement Plethysmography ◽  
High Body ◽  
Childhood Overweight And Obesity ◽  
Body Fat Content ◽  
Measurement Session ◽  
Total Body

Childhood overweight and obesity, a worldwide problem, is generally identified using BMI (body mass index). However, this application of BMI has been little investigated in children below 5 years of age due to a lack of appropriate methods to assess body composition. Therefore, we used air displacement plethysmography (ADP) to study 4.4-year old boys and girls since this method is accurate in young children if they accept the requirements of the measurement. The purpose was to analyze the relationship between BMI and body fat in these children. Body composition was assessed in 76 (43 boys, 33 girls) of the 84 children brought to the measurement session. Boys and girls contained25.2±4.7and26.8±4.0% body fat, respectively. BMI-based cut-offs for overweight could not effectively identify children with a high body fat content. There was a significant (P<0.001) but weak (r=0.39) correlation between BMI and body fat (%). In conclusion, requirements associated with a successful assessment of body composition by means of ADP were accepted by most 4-year-olds. Furthermore, BMI-based cut-offs for overweight did not effectively identify children with a high body fatness and BMI explained only a small proportion of the variation in body fat (%) in this age group.

scholarly journals Correlation Between Body Composition Analysis and Biochemical Nutritional Markers in Maintenance Hemodialysis Patients with Chronic Liver Disease

2020 ◽  
Vol 71 (11) ◽  
pp. 94-100
Author(s):  
Luciana Carmen Nitoi ◽  
Valeriu Ardeleanu ◽  
Anca Pantea Stoian ◽  
Lavinia Alexandra Moroianu
Keyword(s):  
Body Composition ◽  
Liver Disease ◽  
Nutritional Status ◽  
Chronic Liver Disease ◽  
The Body ◽  
Chronic Liver ◽  
Composition Analysis ◽  
Arterial Line ◽  
Body Protein ◽  
Total Body

Several approaches have been used to assess protein-energy wasting syndrome, such as clinical evaluation, biochemical nutritional markers, anthropometric measurements, but Bioelectrical Impedance Analysis (BIA) techniques hold a central place in clinical settings. The aim of this study is to report our clinical experience with BIA and the correlations between biochemical nutritional markers and BIA nutritional parameters in hemodialysis (HD) patients associating or free of chronic liver disease. This cross-sectional observational study included 69 HD patients divided into two groups: 33 with chronic liver disease (CLD+) versus 36 chronic liver disease-free (CLD-) from one HD unit in Romania. Serum albumin (SA), serum creatinine (SCr) and C-reactive protein (CRP) were obtained from the HD arterial line immediately before the HD session and by BIA the body composition including total body water (TBW), total body fat (TBF), lean fat free mass(LFFM), body muscular mass (BMM), malnutrition index and body protein reserve (PR) were assessed. No significant differences between groups were found in BCM, BMM, PR and TBF (p = 0.92, p = 0.60, p = 0.907, and p = 0.634, respectively). Malnutrition index had a significantly higher mean value in HD-CLD(+) patients (p = 0.00). HD-CLD(-) group showed a strong correlation between SA and SCr and BCM, BMM (kg), LFFM (kg) and body PR (kg) (r=.48, r=.50, r=.44, r=.50; resp. r=.42, r=.40, r=.36, r=.42). In HD-CLD(+) patients, a significant positive correlation was found between SA and SCr and LFFM and body PR (r=.37, r=.35; resp. r=.44, r=.35). Discussion: BIA is one of the most accurate techniques for assessing nutritional status and should be regularly used in clinical practice along with biochemical nutritional markers in HD patients. Although the protein metabolism depends to a large extent on liver function, CLD cannot be considered as having a significant impact on nutritional status in HD patients.

scholarly journals PHYSIOLOGICAL STATUS, BLOOD PROFILE AND BODY COMPOSITION OF SHEEP FED WITH CA-SAPONIFIED LEMURU OIL COATED BY HERBS

2015 ◽  
Vol 39 (2) ◽  
pp. 116
Author(s):  
Dewi Apri Astuti ◽  
Asep Sudarman
Keyword(s):  
Heart Rate ◽  
Body Composition ◽  
Respiration Rate ◽  
Body Fat ◽  
Rectal Temperature ◽  
Zingiber Officinale ◽  
Physiological Status ◽  
Total Body Fat ◽  
Total Body ◽  
Blood Profiles

<p>This study was aimed to evaluate the physiological status, blood profiles and body composition of sheep fed with Ca-saponified lemuru oil coated by herbs. Twenty fat-tailed sheep (av. BW 23±1.2 kg) were used in this experiment by using Completely Randomized Design with five treatments ration and four replications of each. Sheep fed with concentrate containing 3% Ca-saponified lemuru oil and king grass (1:1) ad libitum. Treatments were control diet without herbs (R1); Ca-saponified lemuru oil coated by curcumae domestica (R2); coated by Zingiber officinale Rosc (R3); coated by Eugenia polyantha (R4) and coated by Pluchea indica Less (R5). Data of physiological parameters were measured three times a day, in the morning, at noon and afternoon. Blood samples were collected at the end of the experiment through jugular vein, together with zero sample for Urea Space measurement. The variables observed were physiological data (heart rate, respiration rate, and rectal temperature), blood profiles (erythrocyte, hemoglobin, packed cell volume (PCV), leucocytes) and body composition (water, protein and fat) measured using Urea Space technique. Results of the study showed that sheep fed with Ca-saponified lemuru oil coated by herbs was not significantly different on heart rate, respiration rate and rectal temperature among treatments. Meanwhile, total leucocytes, neutrophil cell, and lymphocytes significantly increased (P&lt;0.05) by the treatment. Body composition percentage (water, protein and fat) were same in all treatments, except the total body fat and energy retained. In conclusion, supplementation of 3% Ca-saponified lemuru oil coated by Curcumae domestica, Zingiber officinale Rosc, Eugenia polyantha and Pluchea indica Less in fat-tailed sheep had no effect on physiological parameters, but improved the leucocyte and neutrophil cells. Total body fat and energy retained lower compared to control treatment.</p><p>(Key words: Body composition, Ca-saponified, Herbs, Lemuru oil, Urea space)</p>

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