Two experiments were conducted to determine the effects of pelleting, diet type (fat and fiber level), and withdrawal of dietary fiber and fat before marketing on growth performance, carcass yield, and carcass fat iodine value (IV) of finishing pigs. Each experiment used 288 pigs (initially 49.6 and 48.5 kg BW, respectively) with 6 dietary treatments arranged as 2 × 3 factorials. In Exp. 1, mai...

1. The effects of dietary energy level and dietary energy source on protein utilization by plaice (Pleuronectes platessa) were examined by giving diets containing 400 g crude protein/kg to nine groups of fish. Five of these diets contained only lipid as a source of energy (in addition to protein) and their energy contents were varied by increasing the lipid level in a step-wise manner from 56 t...

The aim of this study was the preparation and determination of the main chemical parameters for 5 purified diets for laboratory mice and rats: 2 diet for maintaining and growth/breeding animal colonies and 3 diets for inducing metabolic disorders (atherosclerosis, diabetes type II and obesity). Diet recipes for maintenance and growth are the classic recipes and diets that induce metabolic syndr...

Pollen substitute diets are a valuable resource for maintaining strong and health honey bee colonies. Specific diets may be useful in one region or country and inadequate or economically unviable in others. We compared two artificial protein diets that had been formulated from locally-available ingredients in Brazil with bee bread and a non-protein sucrose diet. Groups of 100 newly-emerged, adu...

to the editor: The studies by Samaha et al. 1 and Foster et al. 2 (May 22 issue) are intended to expand our knowledge about low-carbohydrate diets. One potential long-term concern about the low-carbohydrate diet is its relatively high protein load and the effect this has on kidneys. This issue is especially important in persons with diabetes, who are more likely than others to have an underlyin...

This study was conducted to compare the effects of diets Borage Powder and control (no additives diets) on broiler’s average blood cell counts and immune system on the broiler chicks. Sixty four male broiler chicks (Ross 308) randomly allocated into one of two treatments with four replicates of eight chickens based on a completely randomized block design.  Diets were include control (no additiv...

Two 42-d experiments compared the nutritional value of YieldGard Rootworm corn (MON863; experiment 1) and YieldGard Plus corn (MON810 x MON863; experiment 2) to their respective nontransgenic controls and 6 commercial reference corn hybrids when fed to growing broilers. For each experiment, a randomized complete block design was used with 8 dietary treatments in each of 5 replicated blocks of p...

Diets deficient in protein often increase food consumption, body weight and fat mass; however, the underlying mechanisms remain poorly understood. We compared the effects of diets varying in protein concentrations on energy balance in obesity-prone rats. We demonstrate that protein-free (0% protein calories) diets decreased energy intake and increased energy expenditure, very low protein (5% pr...

Lactating dairy cow diets with more than 24% starch (DM basis) are common, but recent high corn prices have fueled a desire to feed lower-starch diets. The potential for using digestible neutral detergent fiber or pectin from byproduct feeds or sugars to partially replace starch from corn grain in diets fed to lactating dairy cows was reviewed. Potential modifying effects of corn silage, starch...

Chronic consumption of high-fat or -carbohydrate diets is associated with the development of obesity; however, it is not well established whether dietary protein plays a role in the development of abnormalities of lipid metabolism that occur during obesity. To determine the effect of different types of protein during diet-induced obesity on hepatic and adipocyte lipid metabolism, rats were fed ...