Abdel Magied, H., ali, M., waly, A., habib, H. (2022). IMPROVING THE UTILIZATION OF BROILER LOW PROTEIN DIETS USING TYROSINE, TRYPTOPHAN, CITRIC ACID AND SULPHATE. test, 42(3), 265-279. doi: 10.21608/epsj.2022.264649
hemat abdel aal Abdel Magied; mohamed nabil ali; amany hussien waly; heba hamed habib. "IMPROVING THE UTILIZATION OF BROILER LOW PROTEIN DIETS USING TYROSINE, TRYPTOPHAN, CITRIC ACID AND SULPHATE". test, 42, 3, 2022, 265-279. doi: 10.21608/epsj.2022.264649
Abdel Magied, H., ali, M., waly, A., habib, H. (2022). 'IMPROVING THE UTILIZATION OF BROILER LOW PROTEIN DIETS USING TYROSINE, TRYPTOPHAN, CITRIC ACID AND SULPHATE', test, 42(3), pp. 265-279. doi: 10.21608/epsj.2022.264649
Abdel Magied, H., ali, M., waly, A., habib, H. IMPROVING THE UTILIZATION OF BROILER LOW PROTEIN DIETS USING TYROSINE, TRYPTOPHAN, CITRIC ACID AND SULPHATE. test, 2022; 42(3): 265-279. doi: 10.21608/epsj.2022.264649

IMPROVING THE UTILIZATION OF BROILER LOW PROTEIN DIETS USING TYROSINE, TRYPTOPHAN, CITRIC ACID AND SULPHATE

Egyptian Poultry Science Journal
Article 2, Volume 42, Issue 3, September 2022, Pages 265-279    PDF (583.19 K)
Document Type: Original Article
DOI: 10.21608/epsj.2022.264649
Authors
hemat abdel aal Abdel Magied1; mohamed nabil ali2; amany hussien waly3; heba hamed habib4
1animal production research institute - agricultural research center
2Anim.Prod. Res. Inst., Agric. Res. Center, Ministry of Agric., Dokki , Giza, Egypt.
3animal production institute
4animal production research institute
Abstract
The aimed of this study evaluate the ability of tyrosine, tryptophan, citric acid (CA) , sodium sulphate (SS) or their mixture to improve the utilization of broiler low protein diets (LP diet). A total number of 270  Cobb broiler  10 day old   were randomly distributed into nine groups received basal diet (control), diet containing  2 percentage points  lower protein (LP diet),  LP +0.3 % citric acid (CA), LP +0.3% Anhydrous sodium sulphate (SS) , LP+0.3 %  CA + 0.3 % SS, LP+ 0.05% tyrosine , LP +0.05% tyrosine + 0.3 % CA +0.3 % SS, LP+0.05% tryptophan and LP+0.05% tryptophan +0.3 %  CA + 0.3 % SS. At 21 day, using LP diet significantly decreased broiler body weight compared to control diet while all feed additives improved weight gain and feed conversion compared to LP diet. The birds fed mixture of tyrosine +CA+SS recorded the highest value of body weight and the best feed conversion. At 35 day, The birds fed mixture of tyrosine +CA+SS recorded significantly higher body weight value and better feed conversion by 8.63 and 8.53 %, respectively, compared to those fed control diet . Compared to other treatments, birds fed mixture of tyrosine +CA+SS recorded the highest values of total protein, albumin and total cholesterol in plasma. It can be concluded that addition of tyrosine, tryptophan, CA or SS to LP diet improved the broiler performance to be like those fed control diet while the mixture of tyrosine +CA+SS surpassed the control.
Keywords
broiler; low protein; citric acid; tyrosine; tryptophane and sulphate
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