Aerobic granular sludge is attractive for high-rate biological wastewater treatment. Biomass wash-out conditions stimulate the formation of aerobic granules. Deteriorated performances in biomass settling and nutrient removal during start-up have however often been reported. The effect of wash-out dynamics was investigated on bacterial selection, biomass settling behavior, and metabolic activiti...

Exergy transfer and microwave heating performances of wheat straw particles as affected by power (250, 300, 350 W), feeding load (10, 30, 50 g), particle size (0.058, 0.106, 0.270 mm) were investigated detailed in this study. The results show that when the increased from 250 to W, average rate range 23.41–56.18 °C/min with exergy efficiency 1.10–1.89%. When 0.058 mm, decreased 20.59–56.18 0.70–...

This study was carried out to determine the effects of free choice feeding of starter feed and whole cereals on the growth of turkey poults. Two hundred-seventy poults (7-d old) were divided into 3 treatment groups each with 3 replications containing 15 males and 15 females. Control poults (C) were fed only on starter feed (280 g CP and 11.7 MJ ME/kg). Treatments for choice-fed turkey poults we...

The poultry population in Africa is mostly composed of local or indigenous chickens appreciated for the unique taste and texture their meat. However, with ever-increasing growth, free-range backyard farming system no longer adapted to supply people protein requirements. Crossbreeding hens an improved rooster weakens thermotolerance disease resistance offspring African areas. In this context, av...

The dairy farming systems of Western Europe are based on a simple feeding system composed of grazed and preserved grass, maize silage and concentrates in variable proportions. There is, nevertheless, a great diversity of feeding strategies between dairy farms. Over 5 years, we studied the direct and delayed effects of four feeding strategies on the lactation and reproduction performances of Hol...