scholarly journals Ponderal evolution, food efficiency ratio and protein net efficiency ratio, determined in wistar rats fed diets with different protein sources

2013 ◽  
Vol 7 (2) ◽  
pp. 1-15
Author(s):  
Ronaldo de Oliveira Sales ◽  
Admar Costa de Oliveira
Keyword(s):  
Wistar Rats ◽  
Efficiency Ratio ◽  
Protein Sources ◽  
Food Efficiency ◽  
Food Efficiency Ratio

Nota. Influencia de la pulpa y fibra natural de algarrobas sobre algunos aspectos de la utilización nutritiva de la dieta y la colesterolemia en ratas / Note. Influence of pulp and natural carob fiber on some aspects of nutritional utilization and cholesterolemia in rats

1999 ◽  
Vol 5 (5) ◽  
pp. 425-430 ◽  
Author(s):  
L. Pérez-Olleros ◽  
M. Garcia-Cuevas ◽  
B. Ruiz-Roso
Keyword(s):  
Comparative Study ◽  
Blood Level ◽  
Serum Cholesterol ◽  
Natural Fiber ◽  
Weight Increase ◽  
Efficiency Ratio ◽  
Semisynthetic Diet ◽  
Food Efficiency ◽  
Cholesterol Levels ◽  
Food Efficiency Ratio

A comparative study of the influence of two subproducts from carob, its pulp (PUL) and its natural fiber (FNA), on the dietary nutritive utilization was performed. The products were included in a semisynthetic diet (50 g/kg) and administered to rats. A group of animals which consumed cellulose (CEL) was used as a control. Cholesterol levels were monitored weekly during 28 days in normal and hypercholesterolemic rats that consumed FNA and CEL (supplemented with sterols 25 g/kg diet). The intake, weight increase and food efficiency ratio (CEA) obtained were not significantly influ enced. By contrast, the fat digestibility coefficient (CDG) of the FNA group (0.97 ± 0.003) was signifi cantly lower than the corresponding CEL (0.98 ± 0.00) and PUL (0.98 ± 0.00) groups. Accordingly, the nitrogen digestibility coefficients (CDN) were significantly different: CEL, 0.93 ± 0.003; PUL, 0.91 ± 0.003, and FNA, 0.90 ± 0.003. Serum cholesterol levels were not different between the non-hypercho lesterolemic groups that consumed FNA or CEL. Concerning the evolution of the cholesterol blood level, the animals supplemented with cholesterol showed an increase that was always lower in the supplemented animals which were administered FNA compared with those that consumed CEL. This difference was statistically significant (p ≤ 0.05) in the fourth week, when the cholesterol levels of the CEL and FNA groups were 235 ± 9 mg/dL and 167 ± 12 mg/dL, respectively.

scholarly journals Body weight ratio of male and female rats reared on various diets in relation to food efficiency ratio and longevity

1969 ◽  
Vol 3 (2) ◽  
pp. 119-127 ◽  
Author(s):  
L. M. Dalderup
Keyword(s):  
Age Groups ◽  
Weight Ratio ◽  
Later Life ◽  
Female Rats ◽  
Efficiency Ratio ◽  
Male And Female ◽  
Food Efficiency ◽  
Male And Female Rats ◽  
Younger Age ◽  
Food Efficiency Ratio

The ratio of the bodyweights of male and female rats, together with the weight of the females, seems to give valuable information as to the biological value of an experimental food as a whole and to the lifespan expectancy. Extremes of the bodyweight ratios are 0.9 and 2.0, the lower ratios applying to younger age groups and to old animals, the higher ratios to the ages in between. There is evidence that diets which are most favourable with regard to longevity give rise to maximum ratios between 1.5 and 1.6, which are maintained during later life. The females give always less response to dietary measures and are less disturbed by very bad quality rations than the males. Their lifespan is often longer than that of the males. The bodyweight ratio has within reasonable limits the same numerical value as the ratio of food efficiencies of male and female animals; the weight ratio is always very simple to obtain, whereas measurement of food-efficiency ratio requires much more work.

scholarly journals Thermally oxidised sunflower-seed oil increases liver and serum peroxidation and modifies lipoprotein composition in rats

2004 ◽  
Vol 92 (2) ◽  
pp. 257-265 ◽  
Author(s):  
Carmen Garrido-Polonio ◽  
M. Carmen García-Linares ◽  
M. Trinidad García-Arias ◽  
Sara López-Varela ◽  
M. Camino García-Fernández ◽  
...  
Keyword(s):  
Weight Gain ◽  
Sunflower Seed ◽  
Seed Oil ◽  
Thiobarbituric Acid ◽  
Efficiency Ratio ◽  
Food Efficiency ◽  
Sunflower Seed Oil ◽  
Food Efficiency Ratio ◽  
Liver Tbars ◽  
Lipoprotein Composition

Peroxidation of LDL and other lipoproteins is thought to play a central role in atherogenesis. Dietary thermally oxidised oils may increase atherogenic risk in consumers by increasing their oxidative status. The present paper compares the effects of two diets containing unused sunflower-seed oil (US) or sunflower-seed oil repeatedly used in frying (FS) (both 15 g/100 g diet) on weight gain, food efficiency ratio, serum lipid levels and lipoprotein composition, and the content of thiobarbituric acid-reactive substances (TBARS) in the liver, serum, and lipoproteins in growing Wistar rats. After sixty potato fryings the FS contained 27·7 g polar material/100 g oil and 16·6 g oligomers/100 g oil. The FS-fed rats had a significantly lower weight gain and food efficiency ratio. Liver-TBARS increased due to the consumption of the highly altered oil and showed a significant linear relationship (all r<0·68; P>0·002) with the ingestion of thermally oxidised compounds. Serum-, VLDL-, LDL- and HDL-TBARS were significantly higher in the FS-fed rats (all P>0·001). Concentrations of serum total and non-esterified cholesterol and phospholipids were significantly higher in the FS-fed rats (P>0·05, P>0·05, and P>0·001, respectively). Serum triacylglycerol concentrations did not vary between the two dietary groups. Total and esterified cholesterol and phospholipid levels increased significantly in the HDL fraction (P>0·05, P>0·05, and P>0·001, respectively) of the FS-fed rats. HDL-cholesterol and HDL-phospholipids were significantly correlated with liver-TBARS (r<0·747; P>0·0001), VLDL-TBARS (r<0·642; P>0·003), LDL-TBARS (r<0·475; P>0·04), and HDL-TBARS (r<0·787; P>0·0001). The data suggest that the rat increases HDL as a protecting mechanism against the peroxidative stress induced by the consumption of a diet containing the thermally oxidised oil.

scholarly journals Assessment and Biomonitoring of the Effect of Rapeseeds Oil on Wister Rat Organs

2019 ◽  
pp. 20-29 ◽  
Keyword(s):  
Weight Loss ◽  
Rural Areas ◽  
Rapeseed Oil ◽  
Control Diet ◽  
The Body ◽  
Dependent Manner ◽  
Efficiency Ratio ◽  
Food Efficiency ◽  
Food Efficiency Ratio ◽  
Group A

Rapeseed oil is one of the important and cheapest vegetable oil in Bangladesh and many other countries. It is commonly used as cooking oil in Bangladesh particularly in rural areas and also used as other food items. This study evaluated the physiological effects of four type’s rapeseeds namely Mustard (Wild), Mustard (hybrid), Rai (Wild), Rai (hybrid) oil on six strains of bacteria in addition to studying the effects of two varieties of rapeseeds oil Mustard (Wild) and Rai (hybrid) oil on Wistar rat’s organs including liver, kidney, heart and skeletal muscles. Firstly, we examined the effects of these Rapeseeds oil on bacteria and found that these Rapeseeds oils possess antibacterial activities. Six bacterial strains such as B. subtilis, S. lutea, X. campestris, E. coli, K. Pneumonia, P. denitrificans was used to test the effect of these rapeseeds oil and observed that rapeseed oil showed inhibition against tested microorganisms in a concentration-dependent manner. Finally, the effects of oil obtained from these two varieties were investigated after feeding rats for 8 weeks. Male Wistar rats were divided into three groups, each group contains 4 rats. Group A was considered as control diet group, while Group B was mustard (Wild) oil group and Group C was Rai (hybrid) oil group. Group A was containing 0.6 gram oil plus 14.4gm diet. We found that rats of both experimental groups exhibit weight loss, reduction of food efficiency ratio and increase cardiac and hepatic enzymes including CK-MB, ALP, SGPT and SGOT compared to the rats fed controlled diet. Furthermore, we also found that the body weight loss, food efficiency ratio markedly decreased and tested enzymes increased in rats fed Mustard (Wild) oil compared to rat fed Rai (hybrid) oil.

scholarly journals Performance of the African giant rat (Cricetomys gambianus Waterhouse) on commercial rations and varying dietary protein levels

1978 ◽  
Vol 12 (2) ◽  
pp. 109-112 ◽  
Author(s):  
S. S. Ajayi ◽  
O. O. Tewe
Keyword(s):  
Growth Performance ◽  
Dietary Protein ◽  
Protein Level ◽  
Efficiency Ratio ◽  
Experimental Diet ◽  
Protein Levels ◽  
Dietary Protein Level ◽  
Food Efficiency Ratio ◽  
Cricetomys Gambianus ◽  
African Giant Rat

The growth performance of 24 weanling giant rats was studied in 2 experiments of 30 weeks duration with commercial livestock rations and graded levels of protein. Daily average liveweight gain was 5·1-7·3 g, food consumption 26·9-36·3 g on 6 diets. Food intake, growth rate and food efficiency ratio were very similar using the different commercial diets. Growth performance improved as the dietary protein level was raised from 10 to 13%, but a further increase to 16% did not result in greater growth. The commercial pig ration and the experimental diet containing 13% dietary protein level were found to give satisfactory growth, and are recommended for studies with these animals.

Protein Efficiency Ratio: AACC/ASTM Collaborative Study

1984 ◽  
Vol 67 (1) ◽  
pp. 66-77
Author(s):  
L Ross Hackler ◽  
Clarence E Bodwell ◽  
Muriel L Happich ◽  
John G Phillips ◽  
Phillip H Derse ◽  
...  
Keyword(s):  
Analysis Of Variance ◽  
Vegetable Protein ◽  
Protein Efficiency Ratio ◽  
Collaborative Study ◽  
Animal Experiments ◽  
Peanut Flour ◽  
Efficiency Ratio ◽  
Protein Sources ◽  
Lean Beef ◽  
Textured Vegetable Protein

Abstract Eight laboratories (7 of the laboratories conducted animal experiments) participated in a collaborative study to standardize some of the methodology associated with animal bioassays for determining protein efficiency ratios and to suggest improvements which would reduce the variation among laboratories. One-, 2-, 3-, and 4-week protein efficiency ratios (PER) with 0-, 2-, or 4-day adaptation periods were obtained from each laboratory, respectively, for 6 protein sources: casein, lean beef, lactalbumin, textured vegetable protein, peanut flour, and wheat flour. Analyses were computed for PER and adjusted PER (APER). From the analysis of variance for PER and APER, significant (P &lt; 0.05) effects were observed due to laboratories, adaptation length, protein sources, and/or interactions among these variables. In general, APER values show much less variation among laboratories than PER values. The reproducibility and repeatability variances were significantly (P &lt; 0.05) greater for an assay length of 2 weeks than they were for 3- or 4-week assays. Two protein sources, casein and textured vegetable protein, were fed at both high (10%) and low (6%) levels of protein. Analysis of variance of PER values shows a significant (P &lt; 0.05) laboratory by protein level by assay length interaction.

Timing of fat and liquid sugar intake alters substrate oxidation and food efficiency in male Wistar rats

2014 ◽  
Vol 32 (2) ◽  
pp. 289-298 ◽  
Author(s):  
Johanneke E. Oosterman ◽  
Ewout Foppen ◽  
Rianne van der Spek ◽  
Eric Fliers ◽  
Andries Kalsbeek ◽  
...  
Keyword(s):  
Wistar Rats ◽  
Substrate Oxidation ◽  
Sugar Intake ◽  
Food Efficiency ◽  
Male Wistar Rats
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