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Thyroid Hormones and Lipid Profile in Commercial Laying Chicken

P. B. Sonavane S. H. Dalvi R. B. Ambade Percy E. Avari Kumarasamy J.
Vol 8(7), 153-159

The present study was conducted on sixty White Leghorn BV-300 strain commercial layer birds which were in their different phase of laying. The blood biochemical constituent’s viz. triglyceride, total cholesterol, LDL, and HDL cholesterol and thyroid hormones were estimated. The triiodothyronine has shown significant (p<0.01) increased from 21st to 30th week of the age when bird start laying. Highest level of thyroxine was observed on last phase of laying without any definite trend during entire laying phase of chicken. The lowest value of triglycerides was obtained at 21st - 30th week of age of layer birds. The levels of triglycerides significantly increased (p<0.01) at last phase of laying but there was non-significant fluctuation in the level of total cholesterol during the entire laying phase of chicken. Also the HDL and LDL cholesterol levels during different phases of laying did not showed any definite pattern. There was non-significant fluctuation in the levels of HDL and LDL cholesterol concentration during the entire laying phases of chicken. Barring total cholesterol, LDL and HDL cholesterol relationship, all other relationships were statistically non-significant.

Keywords : Lipid Profile Layer Birds Triiodothyronine (T3) Thyroxine (T4)

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