genetic trend for production traits were estimated in iranian holstein cattle using the first lactation data recorded by cattle breeding and dairy product improvement center of the state from 1991 to 2006. effect of some factors on genetic trend was investigated using data from 18 large herds. (co) variance components and genetic parameters were estimated, using five trait animal model and em-a...

Obesity is the major risk factor for the development of many diseases. BMI is widely used as a deputy measure of obesity, but underestimates the prevalence of obesity, defined as an excess of body fat. The aim of this study was to investigate the relationship between body mass index (BMI) and body fat percentage (BF%) in females. The study was a cross-sectional design. A selected sample of 70 f...

This study evaluated the reliability and validity of a Belgian computerized questionnaire to measure at intake. A total of 86 adults completed a 48-item computerized fat intake questionnaire, subseuently kept a 7-day diet record, and finally completed the questionnaire again. For validity, a Pearson orrelation of 0.67 for total fat intake and of 0.60 for percent energy from fat were found betwe...

Breast volume and body composition were measured in 45 adult females to determine the contribution of breast weight and breast volume to total body fat. Plaster casts were filled with sand of known density to obtain breast volume. Breast weight was computed as breast volume times its density. The correlation between total breast volume and percent body fat was r = .40. Breast weight (mean = 484...

An experiment was carried out to determine the effect of corn silage particle size and fat supplements on performance, solid passage rate through the digestive tract, and chewing behavior in dairy cows. The forages were coarse or fine corn silage with geometric means of 8.8±2.7 and 5.6±2.8 mm, and alfalfa with geometrics means of 7.0±3.3 mm, and fat supplements were neutral fat (palm) and soy-o...

Tea extracts are used in many over-the-counter preparations claiming to promote weight loss. The rationale for this usage includes reports that green tea extract increases thermogenesis, and extracts of green and black tea and mulberry leaf inhibit the digestion/absorption of carbohydrate and fat. The investigators in this study tested the potential of increasing doses of a mixture of three ext...