This study was conducted to investigate the effects of using high levels of carbohydrates in the form of daily protein restriction programs on growth performance, feeding efficiency, metabolic changes, oxidative status, digestive enzyme activity, and body tissue composition of Western whiteleg shrimp (Litopenaeus vannamei). This study was conducted for 8 weeks at the Aquaculture Research Station of Persian Gulf University. Before storing the larvae, the shrimp storage tanks and the necessary equipment were completely disinfected and then washed with water. To conduct this experiment, 350 shrimp were prepared with an average initial weight of 1 gram and this experiment was considered in 7 treatments with 3 replications. The shrimp were selected and distributed completely randomly in 21 tanks with a volume of 300 liters of water and a density of 25 shrimp in each tank. P40: During the feeding period with a diet containing 40% protein; P30: During the feeding period with a diet containing 30% proteinP30+HC: During the feeding period with a diet containing 30% protein and 30% carbohydrate; 1P40-2P30HC: During the feeding period, one day of feeding with a diet containing 40%; protein and two days of feeding with a diet containing 30% protein and 30% carbohydrate; 1P40-2P30: During the feeding period, one day of feeding with a diet containing 40%; protein and two days of feeding with a diet containing 30% protein; 3P40-6P30: During the feeding period, three days of feeding with a diet containing 40% protein and six days of feeding with a diet containing 30% protein
3P40-6P30HC: During the feeding period, three days of feeding with a diet containing 40%. protein and six days of feeding with a diet containing 30% protein and 30% carbohydrate
Results: The results of the growth indices of Western whiteleg shrimp showed that protein
level and the use of alternating feeding programs had a significant effect on production
parameters (P<0.05). Accordingly, the final weight (FW) w