Effect of Supplemental Lysine to Low Protein Diet on Production Performance, Egg Quality and Serum Biochemical Parameters of Gramapriya Laying Hens
2025
, A.K. Panda | B. Sahoo
The present study was conducted to evaluate the effect of supplemental lysine to low protein diet on egg production, egg quality and serum biochemical parameters of Gramapriya Laying hens. A basal diet based on maize-soybean meal-deoiled rice bran (14% CP, 0.60% lysine) was formulated, which was adequate in all essential amino acids except lysine. Subsequently, three test diets were formulated by supplementing synthetic lysine at 0.05, 0.10 and 0.15% to obtain 065, 070 and 0.75% lysine, respectively. Each diet was fed ad libtum to 5 replicates of 6 birds in each groups. A lighting regime of 16h was provided and all the layers were kept under uniform management conditions throughout the experimental period (32-44 wks). Increasing dietary level of lysine from 0.60 to 0.65% significantly increased egg production and egg mass, and improved feed conversion ratio. Higher levels of lysine (0.70 or 0.75%) in the diet did not result in further improvement in these parameters. Lowest albumen and highest yolk content in eggs were observed in the dietary group containing 0.60% lysine in the diet. Increasing the lysine levels in the diet to 0.70 or 0.75% significantly increased the albumen content and reduced the yolk content in the eggs of Gramapriya laying hens. It was intermediate in 0.65% lysine containing diet. The serum protein concentration increased marginally by increasing the lysine content of diets from 0.60 to 0.65%. Further increasing the level of lysine to 0.70%, significantly increased the serum protein concentration compared to 0.60% lysine. Considering the overall performance, It is concluded that 0.70% lysine in the diet containing 14% CP is adequate for Gramapriya laying hens.
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