Go to Top Go to Bottom
Animal Breeding and Genetics
Asian-Australasian Journal of Animal Sciences 2004;17(7): 984-989.
DOI: https://doi.org/10.5713/ajas.2004.984    Published online January 1, 2004.
Effects of Age and Lines on Blood Parameters in Laying Tsaiya Ducks
S. R. Lee, T. F. Shen, Y. N. Jiang
Three hundred and twelve female Tsaiya ducks from four lines (L1051, L1052, L1053 and L1054) were used in this study to investigate the changes in plasma calcium and inorganic phosphorus levels, blood pH, carbon dioxide partial pressure (pCO2), bicarbonate ion concentration ([HCO3-]), and base excess (BE) during laying periods. The results indicated that plasma calcium and inorganic phosphorus concentration at 40 and 50 wks of age were higher (p<0.05) than those at other ages. Significant positive correlation coefficients were found between plasma calcium and inorganic phosphorus levels at each age tested from 20 to 50 wks. Ducks from L1053 showed lower (p<0.05) blood pH, BE and [HCO3-] as compared with other lines. Ducks from L1054 had higher (p<0.05) blood pH, BE and [HCO3-] than those of other lines showing that there were some differences on blood parameters among lines. Eggshell strength decreased with age up to 65 wks and remained constant thereafter. Egg weight increased gradually from 30 to 60 wks and decreased slightly after 70 wks of age. Plasma inorganic phosphorus level in 40 and 50 wks old birds was positively correlated with eggshell strength, while blood [HCO3-] in 40 and 50 wks old birds was negatively correlated with eggshell strength.
Keywords: Tsaiya Duck; Blood Parameter; Age; Laying Period

Editorial Office
Asian-Australasian Association of Animal Production Societies(AAAP)
Room 708 Sammo Sporex, 23, Sillim-ro 59-gil, Gwanak-gu, Seoul 08776, Korea   
TEL : +82-2-888-6558    FAX : +82-2-888-6559   
E-mail : jongkha@hotmail.com               

Copyright © 2020 by Asian-Australasian Journal of Animal Sciences. All rights reserved.

Close layer
prev next