PMID- 27433009
OWN - NLM
STAT- MEDLINE
DCOM- 20170411
LR  - 20200220
IS  - 1525-3171 (Electronic)
IS  - 0032-5791 (Linking)
VI  - 95
IP  - 10
DP  - 2016 Oct 1
TI  - Relationships of eggshell, air cell, and cloacal temperatures of embryonated 
      broiler hatching eggs during incubation.
PG  - 2306-13
LID - 10.3382/ps/pew230 [doi]
AB  - The relationships of eggshell, air cell, and embryo cloacal temperatures in Ross 
      x Ross 708 broiler hatching eggs were determined. Twenty eggs were weighed and 
      set on each of 3 tray levels of a single incubator. Eggshell temperature (EST) of 
      the eggs were recorded once in the morning (AM) and afternoon (PM) between 0 and 
      19 d of incubation (DOI) using an infrared thermometer (IRT). All eggs were 
      candled and a transponder was implanted in the air cell of eggs containing live 
      embryos (12 per tray level) at 12 DOI. At 19 DOI, transponders were implanted in 
      the cloaca of live embryos from those same eggs. Air cell temperature (ACT) and 
      EST readings were recorded once in the AM and PM between 12 and 19 DOI, and ACT 
      and cloaca temperature (CLT) readings were recorded every 6 h between 19 and 21 
      DOI. The EST and ACT readings between 13 and 19 DOI were positively correlated. 
      However, their respective mean temperatures between 13 and 19 DOI differed. The 
      EST and ACT were not significantly influenced by tray level. Nevertheless, a main 
      effect due to location (eggshell vs. air cell), and an interaction between DOI 
      and time of day (AM and PM) in the 13 to 19 DOI interval were observed. 
      Furthermore, an interaction was observed between location (air cell and cloaca) 
      and the 6 h sequential time periods in the 19 to 21 DOI interval. However, across 
      the entire 19 to 21 DOI interval, mean ACT and CLT were not significantly 
      different, and were positively correlated. These data suggest that ACT readings 
      are higher than those of EST during the last half of incubation, and that between 
      13 and 19 DOI, ACT readings may have the potential for use as a minimally 
      invasive method by which to more accurately estimate the true core body 
      temperature of broiler embryos. The effects of this method on hatchability and 
      post-hatch performance need determination to better establish its practicality.
CI  - (c) 2016 Poultry Science Association Inc.
FAU - Olojede, O C
AU  - Olojede OC
AD  - Department of Poultry Science, Mississippi State University, Mississippi State, 
      MS 39762.
FAU - Collins, K E
AU  - Collins KE
AD  - Department of Poultry Science, Mississippi State University, Mississippi State, 
      MS 39762.
FAU - Womack, S K
AU  - Womack SK
AD  - Department of Poultry Science, Mississippi State University, Mississippi State, 
      MS 39762.
FAU - Gerard, P D
AU  - Gerard PD
AD  - Department of Mathematical Sciences, Clemson University, Clemson, SC 29634.
FAU - Peebles, E D
AU  - Peebles ED
AD  - Department of Poultry Science, Mississippi State University, Mississippi State, 
      MS 39762 d.peebles@msstate.edu.
LA  - eng
PT  - Journal Article
DEP - 20160718
PL  - England
TA  - Poult Sci
JT  - Poultry science
JID - 0401150
SB  - IM
MH  - Animals
MH  - Chick Embryo
MH  - Chickens/*physiology
MH  - Cloaca/*physiology
MH  - Egg Shell/*physiology
MH  - Ovum/*physiology
MH  - Telemetry/veterinary
MH  - Temperature
OTO - NOTNLM
OT  - air cell temperature
OT  - broiler embryo
OT  - eggshell temperature
OT  - incubation
OT  - transponder
EDAT- 2016/07/20 06:00
MHDA- 2017/04/12 06:00
CRDT- 2016/07/20 06:00
PHST- 2016/05/18 00:00 [accepted]
PHST- 2016/03/07 00:00 [received]
PHST- 2016/07/20 06:00 [entrez]
PHST- 2016/07/20 06:00 [pubmed]
PHST- 2017/04/12 06:00 [medline]
AID - S0032-5791(19)31757-2 [pii]
AID - 10.3382/ps/pew230 [doi]
PST - ppublish
SO  - Poult Sci. 2016 Oct 1;95(10):2306-13. doi: 10.3382/ps/pew230. Epub 2016 Jul 18.