The Excretion of Nitrogen in Fever

اثر سطوح مختلف پروتئین و نوع فرمولاسیون جیره بر اساس اسید آمینه کل و قابل هضم بردفع نیتروژن جوجه‎های گوشتی

An experiment was conducted in a 3×3 factorial arrangement (three different dietary protein level: Cobb recommendation, 10 and 20 percents lower than that and three feed formulations: a diet composed of corn and soybean as a control diet, a diet in which wheat, barley and some agricultural by-products were substituted partially instead of corn and soybean of first diet in which its total sulfur...

Effect of Different Amounts of Protein and Varying Proportions of Corn Silage and Alfalfa Hay on Milk Production and Nitrogen Excretion of Dairy Holstein Cows

Four treatments were assigned to determine the effects of dietary potential digestible fiber (pdF) and crude protein (CP) levels in mid lactating Holstein cows on milk production and nitrogen efficiency. Sixteen primiparous (n=8) and multiparous (n=8) Holstein cows (body weight (BW)=546±72 kg; days in milk (DIM)=118±50 day) were allocated to one of four diets in balanced randomized complete des...

Effect of Dietary Crude Protein Level on UT-B Expression and Nitrogen Efficiency in Growing Baluchi Male Lambs Fed Low or High Concentrate Diets

An experiment was carried out to evaluate how interactions between forage to concentrate ratio and dietary crude protein level may alter nitrogen efficiency and UT-B expression in growing Baluchi male lambs. Four Baluchi male lambs [30 ± 2 kg BW] were used in a 4 × 4 latin square design with 28-d periods and a 2 × 2 factorial arrangement of dietary treatments. The treatments fed forage: concent...

Protein Levels and Environmental Temperature Effects on Carcass Characteristics, Performance, and Nitrogen Excretion of Broiler Chickens from 7 to 21 Days of Age

Estimation of ammonia excretion rates during a period of red tilapia, Oreochromis sp. Culture, considering biomass increase in a water recirculating system

A completely randomized experimental design was conducted to estimate ammonia excretion rate by red tilapia (Oreochromis sp.) during different stages of its growth in recirculating water system units typically designed to meet the experiment purposes. Eight weight groups each containing 75individuals of 20, 30, 40, 60, 80, 120, 180 and 200g average weight were considered as treatments in duplic...