Lipids metabolism at aboriginal adolescents in Russian European North

The aim of our research was to investigate the contents of lipids and fat-soluble vitamins in blood plasma of aboriginal adolescents of Russian European North (komi, n=104). It was established that there are specific Lipemic index at aboriginal adolescents: low level of the general cholesterol, triglycerides, transport lipoproteins both their albuminous components and raised proportion omega-6/omega-3 fatty acids concerning recommended specifications. Level of fat-soluble vitamins also has been considerably lowered. Adolescents living in 62 degrees N differed as a completely higher level of atherogenous fractions of lipids, than the adolescents of Circumpolar regions (65 degrees N) having traditional     

Energy requirements of miners engaged in open-pit coal mining

It has been found that according to the value of daily energy consumption the coal miners engaged in open-cast mining should be referred to group III-IV of work intensity. The determining component of daily energy consumption is energy consumption during the working period the value of which depends on the character of working activity and duration of the working shift. The method of strict evaluation of the calorific value of the food taken and the control of body mass is acceptable for the assessment of daily energy consumption.     

Energy requirements of workers engaged in the underground repair of oil wells in the Azerbaijan SSR

The energy requirement of workers engaged in the underground repair of oil wells has been evaluated. The energy expenditure during the 8-hour shift with the use of manual and mechanized labor was determined on the basis of the 7-day chronometric charts of their labor activity. The power consumption of 32 descending-lifting and preparative-conclusive operations was evaluated by the indirect calorimetry. Energy expenditure in the time off was studied by the questionnaire method during a week. It was established that, as it was calculated for standard body mass (70 kg), the daily energy expenditure of an operator comprised 3190 kcal (fluctuations depended on the use of mechanization means, 3125-3398 kcal), of his assistant--3487 kcal (3434-3644 kcal), machine driver of the tractor-elevator--3013 kcal (2965-3100 kcal). On the basis of the data obtained the work of the operator and machine driver has been referred to the III, and that of the operator's assistant to the IV occupational group with respect to the intensity of their labor.     

Energy and food stuff requirements and actual nutrition of foreign students studying in the USSR

The actual nutrition of students of the Patrice Lumumba University of Peoples' Friendship, who had come to the USSR from different countries of the world, was investigated during their studies. Insufficient content of vegetable proteins and fats, Ca and vitamin C, as well as low carbohydrate level were detected in the food of students from all the continents, except for Asia. No significant difference was observed between the energy providing with food and its consumption by the students. The data obtained have been used for validation of the rational nutrition for foreign students studying in the USSR.     

Energy and protein requirements of guinea keets (Numida meleagris) as meat bird in a hot humid climate

Energy and protein requirements of guinea keets (Numida meleagris) in a hot humid climate were determined involving one day‐old keets of three varieties: Pearls, Lavender and White. Nine dietary treatments combining three levels of metabolisable energy (ME) and crude protein (CP) were offered during each growth phase (0–4, 5–8 and 9–12 weeks of age). Crude protein levels were P₁ , 220, 200 and 180; P₂ , 200, 180 and 160; and P ₃ , 180, 160 and 140 g kg⁻¹ dry mash for respective phases, while ME levels were E₁, 12.13 and 12.55; E₂ , 11.72 and 12.13; and E₃ , 11.30 and 11.72 MJ kg⁻¹ dry matter for 0–4 and 5–12 weeks of age, respectively. The live weight gain during 0–12 weeks of age at different energy levels (E₁ , 751; E₂ , 775 and E₃ , 755) were comparable, but those at different protein levels (P₁ , 847; P₂ , 804 and P₃ , 633) were different (P<0.01). Keets fed either 180 g or 160 g CP kg⁻¹ during 9–12 weeks of age had similar gains. Feed conversion ratios (FCR) during 0–12 weeks on E₁P₁ (3.50), E₂P₁ (3.47) and E₃P₁ (3.47) did not differ significantly. At 4 weeks of age, FCR on the three energy levels were similar but the cumulative FCR on E ₁ (3.67) and E₂ (3.65), although similar, were improved (P<0.05) compared to that on E₃ (3.87). Thus, the requirements of ME are 11.30 and 12.13 MJ kg⁻¹ dry mash during, 0–4 and 5–12 weeks of age with 220, 200 and 160 g CP kg ⁻¹ during 0–4, 5–8 and 9–12 weeks of age, respectively. © 1999 Society of Chemical Industry