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Effect of different energy and protein contents of the diet on performance and growth hormone concentration in the blood of broiler chicken
Published online by Cambridge University Press: 23 November 2017
Extract
In all bird species studied, plasma growth hormone (GH) concentrations are high after hatching and during the rapid growth period. Then, plasma GH concentrations decline during the slow growth period to reach low concentrations in adult birds (Harvey et al, 1983). Moravej et al. (2006) indicated that low-energy intake could increase FCR and mean plasma concentrations of GH and T3 but could decrease BW and mean plasma concentrations of T4. They also reported that different protein levels during starter, grower and finisher periods in broilers may change the plasma concentrations of GH, T4 and T3 but keeping protein levels nearly constant during these phases of growth did not change (P<0.05) these hormones.
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- Copyright © The British Society of Animal Science 2008
References
Harvey, S., Sterling, R. J. and Klandorf, H.. 1983. Gen. Comp. Endocrinol. 50: 275–281.Google Scholar
Moravej, H., Khazali, H.., Shivazad, M., and Mehrabani-Yeganeh, H.. 2006. J. Pult. Sci. 5: 457–462.Google Scholar