There is substantial individual variation in the time taken by broiler chicks to traverse a T-maze and thereby reinstate visual contact with their companions. Chicks completing this task quickly (high performance, HP) subsequently grew faster in the laboratory and on farm, exhibited greater sociality, and showed less pronounced adrenocortical responses to a partial water immersion stressor than...

two experiments were conducted to determine threonine (thr) requirements of two commercial strains, ross 308 and cobb 500, based on standardized ileal digestibility from 15 to 28d of age. basal diet consisted of wheat, triticale, and corn gluten meal was formulated according to quick chick (2006) to be adequate in all nutrients except for thr. incremental levels of supplemental thr were added t...

Results The overall failure rate was 31% after bracing and 52% after observation. Age, gender, Risser, Sanders’ digital maturity stage (DMS), curve type and Cobb angle were all associated with outcome. DMS stages were more predictive of failure than Risser grade, even with age in the model. The best-fitting model included the DMS (1-2, 3, or 4+), Cobb angle, and treatment (p<0.0001, c statistic...

Avian embryogenesis can be manipulated by alteration of the temperature during incubation of the brooding egg. Investigations in turkeys showed that a higher temperature during early embryogenesis positively affects the myogenesis accompanied with a higher muscle fibre number (MFN). The aim of this study was to transfer this result to broiler and to investigate if an alteration of the temperatu...

The objective of the present trial was to evaluate effects nettle leaves (Urtica dioica) supplementation, broiler gender and muscle portion on meat fatty acid mineral profiles. Prior trial, a total 600 one-day-old Cobb 500 chickens both genders, equally, were randomly divided into three groups: basal diet (control group) supplemented in last two weeks fattening with fresh (30 g/kg diet) or oven...

The dilution of commercial broiler feed with copra meal (CM), palm kernel (PKM) and cassava leaf (CLM) enzyme supplementation was investigated. Two hundred eighty 7-day old Cobb 500 broilers were fed alone or diluted the test ingredients without enzyme. There no interaction effects (p>0.05) on intake (FI) weight gain (WG). Poorer (p<0.05) conversion ratio (FCR) observed diet diets from 22-42 d,...

One of the methods combating unwanted microflora is use antibiotics, however, along with positive properties, they have a number significant disadvantages, in particular, detrimental effect both pathogenic and beneficial intestinal microflora. In this regard, there an urgent need to replace antibiotics safer substances, which increasingly include probiotics. The mechanism action probiotics sele...

The effects of dietary supplementation of grape seed extract (GSE) and vitamin C on carcass characteristics, gut morphology and ileal microflora in broiler chickens exposed to chronic heat stress were examined. Experimental diets included a control diet (without additive), 3 levels of GSE (150, 300, 450 mg/kg of diet), and vitamin C (300 mg/kg of diet). Each of the five diets was fed to 5 repli...

An experiment was conducted to evaluate the effects of supplementing black cumin (Nigella sativa) seeds (BCS) in diet on performance, liver weight and enzymes of broilers.The experiment was conducted as a randomized complete block design. Two hundred forty day-old unsexed broiler chicks (Cobb 500) were divided into four groups and assigned to four feeding treatments, with four replicates of 15 ...

This study aimed to determine the effect of dietary processed garlic in feed on performance, intestinal weight, length, and morphology villi broilers. A total 200 Day-Old-Chick (DOC) Cobb strains (unsexed) with an average body weight 42 ± 3 g were randomly allocated four experimental groups five replications, each containing ten chicks per replication. The treatments T0 (basal diet as control),...