131 research outputs found
EFFECT OF DIET DILUTION IN THE STARTER PERIOD ON PERFORMANCE AND CARCASS CHARACTERISTICS OF BROILER CHICKS
The effect of energy and protein dilution in the starter period (8 to 14 days) of age, on performance and carcass characteristics of 360 Arian male chicks was studied in a completely randomised design. This experiment consisted of 6 treatments, 4 replicates, with 15 chicks per replicate. In order to dilute the diets six levels (0, 4, 8, 12, 16, and 20) percent of ground wood charcoal was used. Chicks were fed with starter and grower diet from 15 to 21 and 22 to 42
days of age respectively. During the experiment feed intake, body weight gain, feed conversion ratio were measured weekly. Mortality was measured throughout the experiment. At 43 day of age 4 chicks each treatment was selected and carcass characteristics were measured. The results indicated that dilution of diet from 8 to 14 days of age increased feed intake in this period but the differences were not signifi cant. With increasing dilution rate body weight gain of
chicks signifi cantly decreased in comparison to control group (P< 0.05). Due to compensatory growth after restricted period, there was not signifi cant difference in body weight among restricted and control groups at 42 days of age. There was not signifi cant difference among the treatments for feed conversion ratio in whole period of the experiment (8 to 42 day). Similarly, there was not signifi cant difference among the treatments for caloric conversion ratio in whole period of the experiment (8 to 42 day). Mortality rate in restricted groups was signifi cantly lower than control group
(P<0.05). Diet dilution hadnât signifi cant effect on carcass, breast meat, drumsticks, thighs, liver, intestine, abdominal fat percentages. The results of the present study indicated that broiler chicks could withstand a 7-day period (from 8 to 14 days) feed restriction with ground wood charcoal in early age without loss in performance
Meta-analysis of phosphorus utilisation by broilers receiving corn-soyabean meal diets: influence of dietary calcium and microbial phytase
Performance and macrophage activity of broilers fed with a sorghum meal with different yeast wall levels
Efeito da temperatura ambiente e do sistema de criação sobre as exigĂȘncias de energia metabolizĂĄvel para mantença de aves reprodutoras pesadas
Digestible lysine for broiler chickens with lower genetic potential grown on free-range system
Methionine sources do not affect performance and carcass yield of broilers fed vegetable diets and aubmitted to cyclic heat stress
Reduction of the nutritional values of diets for hens through supplementation with phytase
Qualidade dos ovos de poedeiras comerciais alimentadas com levedura seca de cana-de-açĂșcar
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