PMID- 26047670
OWN - NLM
STAT- MEDLINE
DCOM- 20150918
LR  - 20200220
IS  - 0032-5791 (Print)
IS  - 0032-5791 (Linking)
VI  - 94
IP  - 8
DP  - 2015 Aug
TI  - Effects of color temperatures (Kelvin) of LED bulbs on blood physiological 
      variables of broilers grown to heavy weights.
PG  - 1721-8
LID - 10.3382/ps/pev139 [doi]
AB  - Light-emitting diode (LED) lighting is being used in the poultry industry to 
      reduce energy usage in broiler production facilities. However, limited data are 
      available comparing efficacy of different spectral distribution of LED bulbs on 
      blood physiological variables of broilers grown to heavy weights (>3 kg). The 
      present study evaluated the effects of color temperature (Kelvin) of LED bulbs on 
      blood physiological variables of heavy broilers in 2 trials with 4 
      replicates/trial. The study was a randomized complete block design. Four light 
      treatments consisted of 3 LED light bulbs [2,700 K, (Warm-LED); 5,000 K, 
      (Cool-LED-#1); 5,000 K, (Cool-LED-#2)] and incandescent light (ICD, standard) 
      from 1 to 56 d age. A total of 960 1-day-old Ross x Ross 708 chicks (30 
      males/room 30 females/room) were equally and randomly distributed among 16 
      environmentally controlled rooms at 50% RH. Each of the 4 treatments was 
      represented by 4 rooms. Feed and water were provided ad libitum. All treatment 
      groups were provided the same diet. Venous blood samples were collected on d 21, 
      28, 42, and 56 for immediate analysis of selected physiological variables and 
      plasma collection. In comparison with ICD, Cool-LED-#1 had greater (P < 0.05) 
      effects on pH, partial pressure of CO(2)(pCO(2)), partial pressure of O(2)(pO(2)), 
      saturated O(2)(sO(2)), and K(+). However, all these acid-base changes remained within 
      the normal venous acid-base homeostasis and physiological ranges. In addition, no 
      effect of treatments was observed on HCO(3)(-), hematocrit (Hct), hemoglobin 
      (Hb), Na(+), Ca(2)(+), Cl(-), mean corpuscular hemoglobin concentration (McHc), 
      osmolality, and anion gap. Moreover, blood glucose concentrations were not 
      affected by treatments. This study shows that the 3 LED light bulbs evaluated in 
      this study may be suitable for replacement of ICD light sources in commercial 
      poultry facilities to reduce energy cost and optimize production efficiency 
      without inducing physiological stress on broilers grown to heavy weights.
CI  - (c) 2015 Poultry Science Association Inc.
FAU - Olanrewaju, H A
AU  - Olanrewaju HA
AD  - USDA, Agricultural Research Service, Poultry Research Unit, P.O. Box 5367, 
      Mississippi State, MS 39762-5367 Hammed.Olanrewaju@ars.usda.gov.
FAU - Purswell, J L
AU  - Purswell JL
AD  - USDA, Agricultural Research Service, Poultry Research Unit, P.O. Box 5367, 
      Mississippi State, MS 39762-5367.
FAU - Collier, S D
AU  - Collier SD
AD  - USDA, Agricultural Research Service, Poultry Research Unit, P.O. Box 5367, 
      Mississippi State, MS 39762-5367.
FAU - Branton, S L
AU  - Branton SL
AD  - USDA, Agricultural Research Service, Poultry Research Unit, P.O. Box 5367, 
      Mississippi State, MS 39762-5367.
LA  - eng
PT  - Journal Article
PT  - Randomized Controlled Trial
DEP - 20150605
PL  - England
TA  - Poult Sci
JT  - Poultry science
JID - 0401150
RN  - 0 (Bicarbonates)
SB  - IM
MH  - Animals
MH  - Bicarbonates/blood
MH  - *Body Weight
MH  - Chickens/*blood/growth & development
MH  - Color
MH  - Female
MH  - Housing, Animal
MH  - Hydrogen-Ion Concentration
MH  - Lighting/*instrumentation
MH  - Male
OTO - NOTNLM
OT  - acid-base balance
OT  - blood gases
OT  - broilers
OT  - light-emitting diode
OT  - well-being
EDAT- 2015/06/07 06:00
MHDA- 2015/09/19 06:00
CRDT- 2015/06/07 06:00
PHST- 2015/04/14 00:00 [accepted]
PHST- 2015/06/07 06:00 [entrez]
PHST- 2015/06/07 06:00 [pubmed]
PHST- 2015/09/19 06:00 [medline]
AID - S0032-5791(19)32198-4 [pii]
AID - 10.3382/ps/pev139 [doi]
PST - ppublish
SO  - Poult Sci. 2015 Aug;94(8):1721-8. doi: 10.3382/ps/pev139. Epub 2015 Jun 5.