Effects of early feed restriction on live performance,carcass characteristics,meat and liver composition,some blood parameters,heterophil-lymphocyte ratio,antibody production and tonic immobility duration |
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Authors: | E E Onba??lar S Yalç?n E Torlak P Özdemir |
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Institution: | 1.Department of Animal Science,Ankara University, Faculty of Veterinary Medicine,Ankara,Turkey;2.Food Hygiene and Technology Department,Sel?uk University, Faculty of Veterinary,Konya,Turkey;3.Ministry of Agriculture and Rural Affairs,Province Control Laboratory,Konya,Turkey;4.Department of Biostatistics,Hacettepe University, Faculty of Medicine,Ankara,Turkey |
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Abstract: | The aim of this study was to determine the effects of early feed restriction on performance, carcass characteristics, meat
and liver composition, some blood parameters, H-L ratio, antibody titers against SRBC and tonic immobility duration in broilers.
One hundred ninety male chicks (Ross 308) were randomly allocated into two treatment groups each of 95 chicks. Broilers in
one treatment fed ad libitum until 42 day of age, however in other treatment, broilers were deprived of feed for 4 h per day
from 7 to 21 day. Body weight, feed consumption, feed to gain ratio, carcass characteristics and the percentage of examined
organs except heart were not statistically significant in groups. Percentage of heart was higher (p < 0.05) in broilers fed
ad libitum. At 41 d of age, H-L ratio (p < 0.05) and TI duration (p = 0.001) were higher, serum glucose (p < 0.05) and triglyceride
(p < 0.001) levels were lower in broilers fed ad libitum. Chemical composition of breast and thigh and also fat and ash of
liver were not affected by early feed restriction. Moisture of liver (p = 0.001) was lower and protein of liver (p < 0.01)
was higher in broilers fed ad libitum |
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