the effect of feeding barley-based diets (%60) supplemented with four commercial enzymes containing xylanase and ?-glucanase activities were investigated on performance and gastrointestinal size of broiler chicks. the enzyme supplemented diets were compared with unsupplemented barley- or corn-based diets. a total of 234-day-old male broiler chicks (ross 308) were allocated to 6 treatment groups...

Restriction of behavioral opportunities and uneven use of space are considerable welfare concerns in modern broiler production, particularly when birds are kept at high densities. We hypothesized that increased environmental complexity by provision of barrier perches would help address these issues by encouraging perching and enhancing use of the pen space across a range of stocking densities. ...

The study was carried out at the poultry unit of Department Animal Science teaching and research farm, Ahmadu Bello University, Zaria to determine Chemical Microbial Analysis Poultry Litter Treated with Graded Levels Aluminium sulphate (Alum). alum used obtained from Sabon-garimarket in Zaria, Kaduna State. (alum) applied wood shavings by mixing it thoroughly using hands covered hand gloves. ra...

This study aimed to investigate and compare nonlinear growth models (NLMs) with the predicted performance of broilers using an artificial neural network (ANN). Six hundred forty broiler chicks were sexed and randomly reared in 32 separate pens as a factorial experiment with 4 treatments and 4 replicates including 20 birds per pen in a 42-day period. Treatments consisted of 2 metabolic energy le...

Broilers were allocated to eight treatments consisting of two energy levels: normal (NE) and high (HE), four folic acid (FA) levels (2.2, 5, 10, 15 ppm). On day 42, male female chickens euthanized per pen, white striping (WS) evaluation was performed on the pectoralis major. Birds fed HE diets had reduced (P < 0.05) feed intake conversion rate than those NE diets. With increasing FA levels, ...