Effect of high thermal manipulations in early and late embryogenesis on growth of tibia and femur bones of broilers

Year 2018, Volume: 7 Issue: 2, 205 - 210, 26.12.2018

Sezai Alkan , Özgür Barış Birgül

https://doi.org/10.29278/azd.476637

Abstract

The aim of this research was to determine the effects
of thermal manipulations early and late embryogenesis on growth of tibia and
femur bones of broilers. For control group eggs 37.5 ^oC and 55 %
humidity were applied on the
incubation during 19 days. Incubation temperature was increased to 41 ^oC
and humidity to 65 % for 3 hours on the 8^th -10^th days of
incubation during early embryogenesis. Similarly, incubation temperature was
increased to 41 ^oC and humidity to 65 % for 3 hours on the 16^th-18^th
days of incubation during late embryogenesis. Average tibia bone lengths were
determined as 97.57 mm, 99.08 mm and 100.25 mm for control, early and late
embryonic groups, respectively, and significant difference were determined
between the average values. Also, male broilers (100.27 mm) have higher tibia
bone length than females (97.66 mm). The differences between the groups in
point of femur bone length was significant, and the highest femur bone length
was in the late embryonic group (70.79 mm), the lowest femur bone length in the
control (68.93 mm) group. 

Keywords

Broilers, thermal manipulation, growth, tibia-femur bone

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