Molting and Respiration of Euphausiids

1967 ◽  
Vol 24 (6) ◽  
pp. 1229-1240 ◽  
Author(s):  
Madhu A. Paranjape
Keyword(s):  
Body Weight ◽  
Oxygen Consumption ◽  
Dry Weight ◽  
Temperature Tolerance ◽  
The Body ◽  
Organic Fraction ◽  
Temperature Relation ◽  
Increase With Increase ◽  
Daily Food ◽  
The Difference

Euphausia pacifica, Thysanoëssa spinifera, T. raschii, T. longipes (unspined form), and Tessarabrachion oculatus molted at 4- to 6-day intervals at 11 to 15 C. The average dry weight of the molts of the first three species was 5.92–9.39% of the animal's final dry weight, and the organic fraction ranged from 73 to 83% of the dry weight of the molts. The oxygen consumption of E. pacifica at 5, 10, 15, and 20 C was directly proportional to the body weight. The slopes of the regression lines were near unity at all temperatures and the difference between the regression coefficients was not significant statistically. The respiration–temperature relation of E. pacifica suggested its eurythermic character. The Q10 value was 2.21 between 5 and 10 C and increased to 2.55 between 10 and 15 C. The Q10 value apparently did not increase with increase in body size. The upper limit of temperature tolerance for the observed population of E. pacifica was close to 20 C. On the day of molting, oxygen consumption of E. pacifica increased by an average of 34.2%. Feeding decreased on the day before and on the day of molting and increased after molting. At 15 C, a daily food intake of 0.022 mg carbon per milligram dry body weight would be required to match the respiratory loss and the loss of integument during the molt.

The Oxygen Consumption of an Echiuroid, Bonellia Viridis Rolando

1968 ◽  
Vol 48 (2) ◽  
pp. 427-434
Author(s):  
A. E. BRAFIELD
Keyword(s):  
Oxygen Consumption ◽  
Body Size ◽  
Continuous Flow ◽  
Muscular Activity ◽  
Dry Weight ◽  
The Body ◽  
Body Region ◽  
Rate Of Oxygen Consumption

1. The oxygen consumption of the echiuroid Bonellia viridis has been investigated by means of a continuous-flow polarographic respirometer. 2. The general rate of oxygen consumption per unit dry weight is similar to that characteristic of polychaetes, and declines exponentially with increasing body size. 3. The rate of oxygen consumption rises in the light and falls again if darkness is restored. 4. The oxygen consumption of the isolated proboscis plus that of the isolated body region corresponds closely to that of the entire animal. 5. The oxygen consumption per unit dry weight of the proboscis is considerably higher than that of the body region. 6. The oxygen consumption of an isolated body region increases in the presence of light, but that of an isolated proboscis does not. 7. These findings are discussed in relation to the biology of the animal, observed muscular activity, and the occurrence of the pigment bonellin.

scholarly journals Aberrant Lighting Causes Anxiety-like Behavior in Mice but Curcumin Ameliorates the Symptoms

Animals ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 2590
Author(s):  
Dhondup Namgyal ◽  
Kumari Chandan ◽  
Sher Ali ◽  
Ajaz Ahmad ◽  
Maha J. Hashim ◽  
...  
Keyword(s):  
Body Weight ◽  
Research Field ◽  
The Body ◽  
Laboratory Animals ◽  
Artificial Lighting ◽  
Lighting Conditions ◽  
Daily Food ◽  
Significant Difference ◽  
Negative Effect ◽  
Lighting Systems

In the modern research field, laboratory animals are constantly kept under artificial lighting conditions. However, recent studies have shown the effect of artificial light on animal behavior and metabolism. In the present study on mice, following three weeks of housing in dim light at night (dLAN; 5lux) and complete darkness (DD; 0lux), we monitored the effect on body weight, daily food intake, anxiety-like behavior by employing the open field test, and expression of the period (PER1) gene. We also studied the effect of oral administration of different concentrations of curcumin (50, 100, and 150 mg/kg) for three weeks in the same mice and monitored these parameters. The exposure to dLAN had significantly increased the anxiety-like behavior and body weight possibly through the altered metabolism in mice, whereas exposure to DD caused increased anxiety but no significant difference in weight gain. Moreover, the expression of the PER1 gene involved in sleep was also found to be decreased in the aberrant light conditions (dLAN and DD). Although the treatment of curcumin had no effect on body weight, it ameliorated the anxiety-like behavior possibly by modulating the expression of the PER1 gene. Thus, alteration in the light/dark cycle had a negative effect on laboratory animals on the body weight and emotions of animals. The present study identifies the risk factors associated with artificial lighting systems on the behavior of laboratory animals and the ameliorative effects of curcumin, with a focus on anxiety-like behavior.

The relationship between cirral activity and oxygen uptake in Balanus balanoides

1965 ◽  
Vol 45 (2) ◽  
pp. 387-403 ◽  
Author(s):  
R. C. Newell ◽  
H. R. Northcroft
Keyword(s):  
Body Weight ◽  
Oxygen Consumption ◽  
Oxygen Uptake ◽  
Mantle Cavity ◽  
The Body ◽  
Effect Of Temperature ◽  
Zero Rate ◽  
Rate Of Oxygen Consumption ◽  
The Relationship ◽  
Balanus Balanoides

The rate of cirral beat of Balanus balanoides is related to the logarithm of the body weight as an exponential function. In any one animal, there is little effect of temperature on cirral activity between 7·5° and 10° C. Between 10° and 20° C, however, there is a rapid increase in cirral beat with temperature followed by a fall at temperatures above 20° C.Balanus balanoides exhibits a fast, medium and zero rate of oxygen consumption. These rates of oxygen consumption correspond with (a) normal cirral beating, (b) ‘testing’ activity with no cirral movement, and (c) with the closure of the mantle cavity. Both of the possible levels of oxygen uptake are related to the logarithm of the body weight in a logarithmic fashion over the temperature range 7·5°–22·5° C. Temperature affects the two rates of oxygen consumption differently. In the slower rate (rate B) there is an increase in the rate of oxygen consumption between 7·5° and 14° C but there is no significant increase in the rate of oxygen consumption between 14° and 22·5 C°.

scholarly journals Effect of certain haematinics on body weight and haemato-biochemical changes in laboratory mice

1970 ◽  
pp. 103-105
Author(s):  
M Jahan ◽  
N Ahmad ◽  
M Myenuddin
Keyword(s):  
Body Weight ◽  
Vitamin B12 ◽  
Biochemical Changes ◽  
The Body ◽  
Treatment Groups ◽  
Group A ◽  
The Difference ◽  
Group B ◽  
Physiology Laboratory ◽  
Hb Concentration

A total of 24, six weeks old mice were used to study the body weight and haemato-biochemical changes following administering of different haematinics (CuSO4, FeSO4 and Vitamin B12). The experiment was performed in Physiology laboratory, Department of Physiology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, from February to March 2006. They were randomly assigned to one of four equal groups (n = 6). In addition to normal rat pellets Group A was supplemented with CuSO4 @ 0.6mg/mice/day orally, Group B with FeSO4 @ 1.2mg/mice/day orally, and Group C with Vitamin B12 (Cytamin®, Glaxo) @ 0.004mg/mice intramuscularly at every 7 days. Group D was considered as control and was also supplemented with rat pellets. Increased body weight was observed in all haematinic treated mice but group B had a significant (p < 0.05) higher weight gain compared to the control. TEC and PCV increased significantly (p < 0.05) in all the treatment groups compared to the control. Statistically insignificant (p > 0.05) increase in TLC was also recorded in all the treated groups. Hb concentration increased for all the treatment groups. The ESR values of the experimental mice were negligible in first hour. The serum transaminases (SGPT and SGOT) increased in all treated groups but the difference in group A was significant (p < 0.05) compared to the control. Blood urea was recorded significantly (P < 0.01) higher for group A and lower for group C compared to the control. This study can be helpful to study the effect of particular haematinic on animal especially on simple stomach animal and human being as mice is used as human and animal model. Key words: Haematinics, haemato-biochemical parameters, mice DOI = 10.3329/bjvm.v5i1.1325 Bangl. J. Vet. Med. (2007). 5 (1 & 2): 103-105

THE POOL SIZE, TURNOVER RATE, AND OXIDATION RATE OF BODY GLUCOSE IN ANESTHETIZED WARM- AND COLD-ACCLIMATED RATS EXPOSED TO A WARM ENVIRONMENT

1959 ◽  
Vol 37 (1) ◽  
pp. 285-295 ◽  
Author(s):  
Florent Depocas
Keyword(s):  
Body Weight ◽  
Plasma Glucose ◽  
Turnover Time ◽  
The Body ◽  
Pool Size ◽  
Glucose Turnover ◽  
Oxidation Rates ◽  
Warm Environment ◽  
Essentially Normal ◽  
The Difference

The size and space of the body glucose pool along with its turnover and oxidation rates have been measured in anesthetized 30° and 6 °C acclimated rats by a method involving continuous intravenous injection of small amounts of D-glucose uniformly labelled with C14 and attainment of relatively constant specific activities of plasma glucose and respiratory CO2. Values of glucose pool space in warm-acclimated rats (essentially normal animals) were in accord with those found in the dog by a similar method. Results obtained on warm-acclimated rats indicated that previous published values of turnover and oxidation rates of glucose for normal rats were high by a factor of approximately 2 to 4. There was, however, close agreement between the values of turnover time of body glucose pool measured by the continuous infusion procedure and those obtained by others with the single intravenous or intraperitoneal injection procedure. In cold-acclimated rats, average absolute values of glucose pool size were significantly smaller than in warm-acclimated rats but the difference was lost when results were related to body weight. Small, non-significant differences in values of glucose pool size per 100 g body weight and in plasma glucose concentration combined to give a significantly larger glucose space in cold-than in warm-acclimated rats. Glucose turnover and oxidation rates, the ratio between these two quantities, and the proportion of respiratory CO2 derived from glucose oxidation were not significantly different in the two groups of rats, thus indicating that cold acclimation is not associated with major alterations in glucose metabolism at least when studied on fully fed anesthetized animals at 30 °C.

scholarly journals The Evaluation of the Body Weight Lowering Effects of Herbal Extract THI on Exercising Healthy Overweight Humans: A Randomized Double-Blind, Placebo-Controlled Trial

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Soo Hyun Cho ◽  
Yoosik Yoon ◽  
Young Yang
Keyword(s):  
Body Weight ◽  
Controlled Trial ◽  
Safety Evaluation ◽  
Hdl Cholesterol ◽  
Treated Group ◽  
The Body ◽  
Herbal Extract ◽  
Double Blind ◽  
The Difference ◽  
Group 2

We investigated the effects of herbal extracts, a mixture of Scutellariae Radix and Platycodi Radix containing the active ingredients Baicalin and Saponin (target herbal ingredient (THI)), on lowering body weight. The present study was a prospective, randomized, double-blind, and placebo-controlled trial carried out at the outpatient department of a hospital over a period of 2 months. Group 1 patients (n=30) received THI, and group 2 patients (n=23) received placebo three times a day before meals. Weight, waist circumference, BMI, total cholesterol, triglycerides, HDL cholesterol, LDL cholesterol, and glucose were measured at baseline and again at the 2nd month. For safety evaluation, various hematological and biochemical parameters were assessed. Values of mean change of weight in the THI-treated group were−1.16±1.41 kg and in the placebo-treated group were−0.24±1.70 kg, respectively. The difference in mean change of weight in the THI-treated group compared with that in the placebo-treated group was statistically significant (P<0.05). The incidence of subjective and objective adverse drug reactions was insignificant (P>0.05). THI was statistically significant in its effectiveness on the weight loss.

scholarly journals Reserves to increase beef production and their use

2021 ◽  
Vol 37 ◽  
pp. 00005
Author(s):  
Leonid Kibkalo
Keyword(s):  
Body Weight ◽  
Average Daily Gain ◽  
The Body ◽  
Sales Revenue ◽  
The Third ◽  
Bull Calves ◽  
Morphological Composition ◽  
Special Diets ◽  
The Difference ◽  
Daily Gain

The studies were carried out on three groups of superreplacement heifers of the Simmental breed, which were impregnated at the body weight of 360 kg. In the first group there were 32 unimpregnated heifers, in the second – 28 heifers, in the third – 30 heifers. The heifers of the first group after growing at the age of 18 months were taken for meat. 56 heifers gave the crop. The heifers were transferred for reproduction, and the bull-calves were put on cultivation and further fattening. To obtain well-fed animals, special diets were made so that the average daily gain was at least 650-700 g. After calving, the cows of the second group were taken for meat, and the cows of the third group were put on a 3-month fattening, and then taken for meat. The pre-slaughter weight of animals of the first group was 52 kg lower than that of animals of the second group and 104.7 kg lower than that of the third group. The difference was statistically significant at P>0.999. The interior fat mass was higher in the carcasses of cows of the second group by 1.1 and 3.2 kg compared to the animals of the third and first groups. The carcass yield was almost at the same level slightly ahead of the animals of the first group. Their slaughter yield was 60.1%, in other groups – 58.8-59.6%. The meatiness ratio was slightly higher in animals of the first group. The carcass weight of the first-calf heifers of the third group was 27.4 kg higher than that of the second group. Compared to the first group, this figure is higher by 52.6 kg. Specific carcass meat weight of the animals of the third group was 82.75%, which is higher than in the second and first groups by 0.41-0.85%, respectively. Heavy cowbanes weighing 32.6 and 40.4 kg were obtained from the animals. The skin of animals of the third group was 3.5-21.6 dm2 larger in area than of the animals of the second and first groups. Feeder bull-calves (n=27) had a removable mass of 532 kg. Heavy (282.3 kg) carcasses of good morphological composition were obtained from them. The sales revenue from first-calf heifers (second group) was higher than fattened heifers by 10.4%, and in comparison with fattened animals after calving (third group) it was lower by 9.4%. From the sale of one cow with a crop, 2.9 times more profit was received than from the sale of a heifer.

scholarly journals Investigation of the Effect of Regular Exercise on Some Motoric Features in Children in the 7–12 Age Group

2019 ◽  
Vol 8 (3) ◽  
pp. 81
Author(s):  
Kürşat Hazar
Keyword(s):  
Body Weight ◽  
Exercise Program ◽  
T Test ◽  
The Body ◽  
Control Group ◽  
Regular Exercise ◽  
Age Group ◽  
Paired Samples ◽  
Explosive Force ◽  
The Difference

The aim of this study was to investigate the effects of regular exercise on some motoric features in 7&ndash;12-year-old boys and girls in 8 weeks period of time. To the study 66 boys with an average age of 8, &plusmn; 7963, as 54 of them in research and 12 of them in control groups; 66 girls, 36 of them as research and 30 as control group, a total of 132 individuals who joins summer sports schools within the body of Muğla Sıtkı Ko&ccedil;man Directorate of Health, Culture and Sports with no health problems participated in the study. Two tests were applied to the children before and after the exercise program. Height, body weight, balance, flexibility, bounce force, explosive force, sit-up and 20m velocity measurements were performed to the participants. SPSS 21.00 package program was used for statistical evaluation of the obtained data. For paired comparisons, Paired Samples t test was applied to determine the effect of the independent variable on the dependent variable. In order to determine the difference between the groups, Independent samples t test was applied and the level of significance was set at p &lt;0.05 and 0.01. In the study, statistically significant differences were found in favor of the research group between the first and second measurement results of height, body weight, balance, flexibility, bounce force, explosive force, sit-up and velocity (p &lt;0.05, p &lt;0.01). As a result, in the light of the data obtained from the comparisons between the groups, it was determined that the regularly performed exercises positively affect the body weight, static balance, flexibility, bounce force, explosive force, sit-up and velocity values in 7&ndash;12 age group boys and girls.

scholarly journals Effect of mating method, sex and birth type on growth of lambs

2013 ◽  
Vol 29 (2) ◽  
pp. 277-286 ◽  
Author(s):  
Zoran Ilic ◽  
A. Jevtic-Vukmirovic ◽  
M.P. Petrovic ◽  
V. Caro-Petrovic ◽  
B. Milosevic ◽  
...  
Keyword(s):  
Body Weight ◽  
Statistical Analysis ◽  
Statistical Significance ◽  
Reproductive Traits ◽  
The Body ◽  
Estrus Synchronization ◽  
Body Weights ◽  
The Difference ◽  
Mating Method ◽  
Birth Type

Estrus synchronization methods was use to control the reproductive traits of sheep, as well as bringing more females at the same stage of estrus and ovulation. According to the points mentioned above, the aim of the present study was to investigate and compare mating method and influence of fixed factors on birth and weaning weight of lambs. Statistical analysis showed that exist difference in the body weights between genotypes of lambs. In the first group, the difference in weight of lambs at birth, regardless of mating method was not significant (P> 0.05), while in the second group, the difference was slightly significant (P <0.05). As for the birth type, sex and within the same genotype, there was a statistical significance (P <0.05) between singles obtained naturally, between the triplets obtained naturally and between triplets received hormonal method. All the differences between body weight at 30 days (mating method, sex and birth type under the same genotype) were statistically significant (P <0.05).The determined differences in the body weights at 60 days (sex, mating method and type of birth under the same genotype) were statistically significant (P <0.05). The results showed that the differences (mating method, sex and type of birth under the same genotype) were statistically significant (P <0.05), except in between body weight at 90 days in twins among two genotypes obtained by natural method, which were not statistically significant (P> 0.05).

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