Abstract
The present experiment was conducted to determine the effect of crystalline progesterone (CP) on serum levels of minerals profile in eighteen Lohmann Brown layers. A single factor completely randomized design was employed with each treatment (0, 5, 10, 15, 20 and 25 mg/bird) administered intramuscularly via the keel muscle and replicated thrice. Data were analyzed using GraphPad InStat® statistical package. Statistically non-significant changes in median serum mineral levels across CP treatment groups were recorded, except for serum calcium, phosphorus and sodium.Median serum calcium (2.9 mmol/L) at CP dose of 20 mg decreased significantly by a magnitude of 0.7 mmol/L from the median calcium value (3.6 mmol/L) at 5 mg CP. Serum phosphorus decreased significantly from 2.8 mmol/L in control hens to 1.6 mmol/L in hens that received 20 mg CP. There was a significant increase in serum sodium median value (4.67 ppm) at treatment dose of 10 mg CP when compared to the corresponding sodium level (2.00 ppm) in the control group. It is recommended that serum biochemistry, hematological parameters and reproductive hormones were determined after exogenous crystalline progesterone on Lohman brown layers.
Published Version
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