Omara, I., Suliman, M., Eltanani, R. (2023). SPARING EFFECT OF BETAINE SUPPLEMENTATION IN LOW METHIONINE LAYING HEN DIETS ON PRODUCTIVE PERFORMANCE AND EGG QUALITY. Egyptian Poultry Science Journal, 43(1), 141-155. doi: 10.21608/epsj.2023.291446
Islam Ibrahim Omara; Marwa Abd Elmonem Suliman; Reham Rushdy Eltanani. "SPARING EFFECT OF BETAINE SUPPLEMENTATION IN LOW METHIONINE LAYING HEN DIETS ON PRODUCTIVE PERFORMANCE AND EGG QUALITY". Egyptian Poultry Science Journal, 43, 1, 2023, 141-155. doi: 10.21608/epsj.2023.291446
Omara, I., Suliman, M., Eltanani, R. (2023). 'SPARING EFFECT OF BETAINE SUPPLEMENTATION IN LOW METHIONINE LAYING HEN DIETS ON PRODUCTIVE PERFORMANCE AND EGG QUALITY', Egyptian Poultry Science Journal, 43(1), pp. 141-155. doi: 10.21608/epsj.2023.291446
Omara, I., Suliman, M., Eltanani, R. SPARING EFFECT OF BETAINE SUPPLEMENTATION IN LOW METHIONINE LAYING HEN DIETS ON PRODUCTIVE PERFORMANCE AND EGG QUALITY. Egyptian Poultry Science Journal, 2023; 43(1): 141-155. doi: 10.21608/epsj.2023.291446
SPARING EFFECT OF BETAINE SUPPLEMENTATION IN LOW METHIONINE LAYING HEN DIETS ON PRODUCTIVE PERFORMANCE AND EGG QUALITY
11Dep. of Anim. Prod., Fac. of Agric., Cairo Uni., 12613 Gammaa St., Giza, Egypt
2By-product Research Department, Animal Production Research Institute, Agriculture Research Center
Abstract
This study evaluated the sparing effect of betaine supplementation to low methionine laying hen diets on productive performance, egg quality, and nutrient digestibility. A total of 250 Lohmann Brown laying hens, 25 weeks age were randomly distributed into 5 treatments of 50 hens in 5 replicates. Five tested diets were formulated T1: 0.45% methionine with no betaine supplementation which basal considered as a control diet, T2: 0.40% methionine with 0.75g betaine/kg, T3: 0.40% methionine with 1.5g/ betaine/kg, T4: 0.35% methionine with 0.75g betaine/kg, and T5: 0.35% methionine with 1.5g betaine/kg. Betaine supplementation to low methionine diets affected significantly (P<0.05) on FI, FBW and BWG. No significant differences (P>0.05) in EP, EW, EM, FCR, SW, AYW, HU, and EYC due to treatment effect. There was a significant difference (P<0.05) among groups on ST due to betaine supplementation to low methionine diet compared to no betaine control diet. Moreover, hens fed 0.35 and 0.40% methionine with betaine supplementation improved (P<0.05) immunoglobulin titre (Ig) compared to those fed on the control diet. Betaine supplementation to low methionine diets had significantly (P<0.05) affected on NB and all nutrients digestibility except CF digestibility compared to no betaine diet (T1). Methionine levels effect had effect (P<0.05) on FI, FCR, FBW, BWG, ST, EYC, and Ig titre. Decreasing methionine level up to 0.35% did not significantly (P<0.05) affected on all nutrients digestibility, except CP digestibility and NB which were affected significantly. Betaine levels effect significantly affected (P<0.05) on FI, HU, EYC, and Ig titre, while no effect (P>0.05) due to betaine levels on EP, EW, EM, FCR, FBW, BWG, SW, ST, and AYW. It could be concluded that betaine supplementation had a role-sparing effect with a low methionine diet especially at level 0.35% without any negative effect on laying productivity, egg quality, and immune response.
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