To investigate whether dietary fat source and energy restriction interactively influence plasma leptin levels and its association of leptin with insulin action, rats were fed diets containing either fish, safflower oil, or beef tallow (20% wt/wt) for 10 weeks. Groups of rats consumed each diet ad libitum or at 85% or 70% of ad libitum energy intake in a design that held fat intake constant. Gra...

This study was conducted to determine the effects of three different fat sources and their combination on growth performance, carcass traits and intestinal measurements of broiler chickens reared to 42 d of age. Two hundred day-old male broiler chicks (Ross 308) were randomly assigned to one of five treatments with four replicates of 10 chicks based on a completely randomized design. The dietar...

BACKGROUND The aim of this project was to study 14 polychlorinated biphenyls (PCBs), 5 dichlorodiphenyl trichloroethans (DDTs), 12 organochlorine pesticides (OCPs) and 6 polybrominated diphenylethers (PBDEs) in meat, liver, tallow and bone marrow from semi-domesticated reindeer. METHODS Meat, liver, tallow, and bone marrow samples (n= 30) were collected from semi-domesticated reindeer in Nort...

This study aims at manufacturing structured lipids by chemical interesterification (CI) of beef tallow with corn, canola and safflower oils individually various blend ratios (60, 70, 80%) catalyst concentrations (0.75, 0.875, 1%). Several physical properties interesterified products were determined data analyzed using univariate multivariate statistical techniques. Interesterified more spreadab...

Previous experiments have shown lower abdominal and body fat deposition in broilers fed polyunsaturated fatty acids (PUFA) compared with those fed saturated fatty acids (SFA) or monounsaturated fatty acids (MUFA). These changes in fat deposition may be related to different rates of lipid synthesis or lipid oxidation. In Experiment 1, in vivo lipogenesis of broilers fed different dietary fatty a...

The aim of the present work was to assess the influence of dietary lipid source on fatty acid phospholipid profiles and on lipid mobilization. Forty male Wistar rats were divided into four groups and fed on high-fat diets which provided olive oil, sunflower oil, palm oil or beef tallow. All rats received the same amount of energy to avoid hyperphagia and differences in energy intake among group...

Experimental research were effectuated to establish the effect of storage time under refrigeration (+2oC) and freezing (-18oC) on the quality of three alimentary animal fats: pork lard, beef tallow and poultry fat. In assessing the various stages of oxidative changes, iodine value (IV), saponification value (SV), refractive index value (RIV), peroxide value (PV) and thiobarbituric acid reactive...

Male and female emus were fed a diet rich in saturated fat (beef tallow) or a diet rich in unsaturated fat (soybean oil) until they weighed about 35 kg. Samples of subcutaneous and retroperitoneal adipose tissues and samples of six major meat cuts were taken for determination of composition. Emus fed the two different diets grew at similar rates, but the male emus had a higher percentage of car...

The physicochemical properties of oil and fat have considerable influence on their performances for various areas application. These properties, such as specific gravity, density, moisture content, free fatty acid, peroxide value, iodine acid saponification value etc., are important parameters assessing the quality could aid in identifying suitability be affected by different processing conditi...