This study evaluated the effect of zinc oxide (ZnO) on growth performance, serum biochemistry, and gut microbial counts of broiler chickens reared in a tropical environment. A total of 120 one-day-old broiler chicks were assigned using a completely randomized design…
Nutraceutical plant products such as red grape pomace (Vitis vinifera L. var. Shiraz) contain potent antioxidants that could mitigate stress caused by high stocking density. An experimental feeding trial was conducted using a total of 720 densely-stocked (30 birds/pen) Ross…
The aim of the study was to assess the effect of litter type and environmental enrichment on the occurrence of footpad dermatitis and hock burns in broilers housed at low and high stocking densities. Chopped straw and sand were used…
A 32-day experiment was conducted to study the effects of supplementation of phytase enzyme, Ronozyme® HiPhos (DSM Nutritional Products, Basel, Switzerland), on the production parameters, water intake, intestinal histomorphology, carcass characteristics and bone mineralization of broiler chickens. A total of…
A study was conducted to investigate the effect of two Lactobacillus strains on hypothalamus pituitary adrenal (HPA) axis activity induced by supposedly unpleasant handling (UH) of broiler chickens. The three treatments were: (1) non-handled chicks fed basal diet (control); (2)…
Heat damaged fish meal was used to demonstrate the ability of a published bioassay method to discern availability differences resulting from heat treatment. The importance of standardising the test diets was shown and available lysine content of fish meal and…
The effect of a dietary leucine imbalance on chickens was investigated. The two criteria considered were growth and antibody production following immunization with sheep red blood cells. Three groups of chickens were fed diets containing increasing levels of leucine. Group…
Performance parameters and oxidation of body lipids of broiler chickens were investigated when their diet was supplemented with a commercial preparation of essential oils (Apacox) derived from selected herbs. One hundred and twenty day-old Cobb-500 female chicks were divided into…
A trial was conducted to determine the effect of egg-weight on the hatchability and growth performance of chickens. Large and medium eggs of New Hampshire (NH) and Rhode Island Red (RIR) hens were grouped in four categories, according to their…
Dietary conjugated linoleic acid (CLA) causes adverse effects on quality of eggs by modifying the fatty acid composition of the yolk. Supplementing oils prevent CLA-induced changes, but cause a decrease in the level of egg CLA. The objective of the…
