EFFECT OF DIETARY LYSINE LEVEL AND CHANGING TIME OF FEEDING FROM STARTER TO GROWER DIET ON THE PERFORMANCE, EFFICIENCY OF PROTEIN AND ENERGY UTILIZATION FOR BROILERS

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DASTAR B.; JAFARI AHANGARI Y.; HASANI S.; SHAMS SHARGH M.; RASHKI KOMAK M.

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Journal: Journal of Agricultural Sciences and Natural Resources Year:2006 | Volume:13 | Issue:Supplement (Special Issue Animal Science) Page(s): 114-122

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Title

EFFECT OF DIETARY LYSINE LEVEL AND CHANGING TIME OF FEEDING FROM STARTER TO GROWER DIET ON THE PERFORMANCE, EFFICIENCY OF PROTEIN AND ENERGY UTILIZATION FOR BROILERS

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Keywords

BROILERQ3

FEED ALLOCATIONQ3

STARTER DIETQ3

LYSINEQ4

Abstract

This experiment was conducted in order to study the effect of changing time of feeding from starter to grower diet and supplementing L-Iysine to starter and grower diets on BROILERs performance during 1 to 35 days of age. For this purpose, a completely randomized design with a 2*2 factorial arrangement was used to test the effects of 2 times of feeding starter (14 & 21 days) and 2 levels of supplemental Llysine (0 and 0.2%) to starter and grower diets. Eight replicates of 16 day-old Ross 308 male BROILERs were allocated to each of 4 experimental treatments. Reducing duration of feeding STARTER DIET from 21 to 14 days resulted decrease in body weight gain at 21st day, but not at 28th and 35th days (P>0.05).Feed intake was reduced at days 21 and 28 (P<0.05), but feed conversion ratio was reduced only at 21st day (P=0.057). BROILERs were fed STARTER DIET for 14 days had lower protein intake during all three periods of experiment (P<0.05) and higher protein and energy efficiency ratio. Supplementing of 0.2% L-lysine to starter and grower diets containing the NRC LYSINE level significantly improved body weight gain (P<0.05), but had no significant effect on feed intake and protein intake (P>0.05). Protein and energy efficiency ratio was increased and production cost decrease by addition of 0.2% LYSINE to starter and grower diets. Results of this experiment indicated that adding 0.2% L-lysine to starter and grower diets containing the NRC LYSINE level improved BROILERs performance and also changing time of feeding from starter to grower diet as early as 14 days of age improved efficiency of energy and protein utilization and reduced the cost of production.

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APA: Copy

DASTAR, B. , JAFARI AHANGARI, Y., HASANI, S., SHAMS SHARGH, M., & RASHKI KOMAK, M.. (2006). EFFECT OF DIETARY LYSINE LEVEL AND CHANGING TIME OF FEEDING FROM STARTER TO GROWER DIET ON THE PERFORMANCE, EFFICIENCY OF PROTEIN AND ENERGY UTILIZATION FOR BROILERS. JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, 13(Supplement (Special Issue Animal Science)), 114-122. SID. https://sid.ir/paper/9141/en

Vancouver: Copy

DASTAR B. , JAFARI AHANGARI Y., HASANI S., SHAMS SHARGH M., RASHKI KOMAK M.. EFFECT OF DIETARY LYSINE LEVEL AND CHANGING TIME OF FEEDING FROM STARTER TO GROWER DIET ON THE PERFORMANCE, EFFICIENCY OF PROTEIN AND ENERGY UTILIZATION FOR BROILERS. JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES[Internet]. 2006;13(Supplement (Special Issue Animal Science)):114-122. Available from: https://sid.ir/paper/9141/en

IEEE: Copy

B. DASTAR, Y. JAFARI AHANGARI, S. HASANI, M. SHAMS SHARGH, and M. RASHKI KOMAK, “EFFECT OF DIETARY LYSINE LEVEL AND CHANGING TIME OF FEEDING FROM STARTER TO GROWER DIET ON THE PERFORMANCE, EFFICIENCY OF PROTEIN AND ENERGY UTILIZATION FOR BROILERS,” JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, vol. 13, no. Supplement (Special Issue Animal Science), pp. 114–122, 2006, [Online]. Available: https://sid.ir/paper/9141/en

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