Effects of the Replacement of Dietary Fish Meal with Poultry By-Product Meal on Growth and Intestinal Health of Chinese Soft-Shelled Turtle (Pelodiscus sinensis)

Qiu, Zongsheng; Xu, Qiyou; Xie, Dazhang; Zhao, Jihe; Yamamoto, Fernando Y.; Xu, Hong; Zhao, Jinyan

doi:10.3390/ani13050865

Cited by 4 publications

(3 citation statements)

References 46 publications

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“…Co-cultured turtles showed reduced GLU, while CRE, UA, and BUN were increased in the present study. The increased BUN, UA, and CRE levels in co-cultured turtles imply higher metabolic activities [ 38 , 39 ]. The increased BUN and UA values could cause an increase in osmolality, which may result in an increase in the prevention of water loss and adaptation to drought or hibernation [ 40 ].…”

Section: Discussionmentioning

confidence: 99%

Comparative Analysis of the Growth, Physiological Responses, and Gene Expression of Chinese Soft-Shelled Turtles Cultured in Different Modes

Wu,

Huang,

et al. 2024

Animals

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The Chinese soft-shelled turtle (Pelodiscus sinensis) is an important freshwater aquaculture turtle due to its taste and nutritional and medicinal value. More ecological culturing modes, such as rice–turtle co-culture, should be developed to meet the ecological benefit demand. We compared growth, physiological parameters, and transcriptome data to detect the physiological responses and regulatory mechanisms of pond-cultured turtles as compared to co-cultured turtles. The co-cultured turtles grew slower than pond-cultured turtles. The gonadosomatic index of co-cultured male turtles was lower than that of pond-cultured male turtles, and both the mesenteric fat index and limb fat index were lower in co-cultured turtles than in pond-cultured turtles (p < 0.05). The blood GLU of the co-cultured turtles was significantly lower than the GLU of the pond-cultured turtles (p < 0.05), while the values of CRE, UA, BUN, AKP, ACP, GOT, and CAT were higher in the co-cultured turtles than in the pond-cultured turtles (p < 0.05). In total, 246 and 598 differentially expressed genes (DEGs) were identified in the brain and gut from turtles cultured in the two different modes, respectively. More DEGs were related to environmental information processing, metabolism, and human diseases. In the brain, the top enriched pathways of DEGs included the longevity regulating pathway, glycerolipid metabolism, cytokine–cytokine receptor interaction, Toll-like receptor signaling pathway, and PI3K-Akt signaling pathway, while in the gut, the top enriched pathways of DEGs included the cell cycle, DNA replication, cellular senescence, and p53 signaling pathway. The turtles acclimated to the different culturing conditions by adjusting their growth, physiological, and biochemical characteristics and related gene expression during a short culture period.

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Section: Discussionmentioning

confidence: 99%

Comparative Analysis of the Growth, Physiological Responses, and Gene Expression of Chinese Soft-Shelled Turtles Cultured in Different Modes

Wu,

Huang,

et al. 2024

Animals

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“…The turtles were fed three times a day (6 : 00, 12 : 00, 18 : 00 h), and the feeding amount was set at 4% of the body weight. During the experiment, the water temperature was maintained at 30 ± 1°C, the dissolved oxygen was kept at more than 5 mg/L, the ammonia nitrogen was less than 0.8 mg/L, and the nitrite was less than 0.05 mg/L [ 31 ].…”

Section: Methodsmentioning

confidence: 99%

Effects of Replacing Fish Meal with Enzymatic Cottonseed Protein on the Growth Performance, Immunity, Antioxidation, and Intestinal Health of Chinese Soft-Shelled Turtle (Pelodiscus sinensis)

Qiu

Zhao

Xie

et al. 2023

Aquaculture Nutrition

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The dietary effects of replacing fish meal with enzymatic cottonseed protein (ECP) on the growth performance, immunity, antioxidant, and intestinal health of Chinese soft-shelled turtles have not been explored. An eight-week feeding trial was conducted with a quadruplicated group of turtles ( 3.44 ± 0.01 g ) that were randomly assigned to 16 cages ( 0.6 m × 0.6 m × 0.6 m ) with 30 turtles that were stocked in each cage. Four dietary groups were fed with diets supplemented with 0, 2%, 4%, and 6% (ECP0 group (control group), ECP2 group, ECP4 group, ECP6 group) of enzymatic cottonseed protein replacing fishmeal. The present study illustrated that the final weight and WG in the ECP2 and ECP4 groups were significantly increased ( P < 0.05 ) compared with the control group. The ECP2, ECP4, and ECP6 groups significantly reduced the feed coefficient ( P < 0.05 ) and significantly increased the SGR ( P < 0.05 ). The serum TP and ALB of the ECP4 group were significantly increased ( P < 0.05 ). The ECP2, ECP4, and ECP6 groups significantly increased the activity of intestinal pepsin ( P < 0.05 ), and the activity of intestinal lipase of the EPC4 group was significantly increased ( P < 0.05 ). The intestinal villus height of the EPC4 group and EPC6 group, the villus width of the EPC2 group and EPC4 group, and the intestinal muscle thickness of the EPC4 group were significantly increased ( P < 0.05 ). At the same time, replacing fishmeal with enzymatic cottonseed protein also affected the intestinal inflammation-related genes compared with the control group. Besides that, the expression of the IL-10 gene in the experimental group was significantly upregulated ( P < 0.05 ). Nevertheless, the expression of TNF-α and IL-8 genes in the ECP2 group and TNF-α and IL-1β genes in the ECP4 group was significantly downregulated ( P < 0.05 ). In summary, replacing fish meal with enzymatic cottonseed protein positively affects the growth, immunity, and intestinal health of Chinese soft-shelled turtles. The appropriate proportion of enzymatic cottonseed protein to replace fish meal in turtle feed is 4%.

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“…Fishmeal is considered one of the most important commercial feed components in the field of aquaculture (Qiu et al, 2023). Fish feed industry utilizes approximately 87% of the global fishmeal production (FAO, 2020).…”

Section: Introductionmentioning

confidence: 99%

Preparation of Fish Meal from Various Fishery Sources For Use in Young Common Carp Cyprinus carpio L. Diets

Al-Noor et al.

2023

Egypt. J. of Aquatic Biolo. and Fish.

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Effects of the Replacement of Dietary Fish Meal with Poultry By-Product Meal on Growth and Intestinal Health of Chinese Soft-Shelled Turtle (Pelodiscus sinensis)

Cited by 4 publications

References 46 publications

Comparative Analysis of the Growth, Physiological Responses, and Gene Expression of Chinese Soft-Shelled Turtles Cultured in Different Modes

Comparative Analysis of the Growth, Physiological Responses, and Gene Expression of Chinese Soft-Shelled Turtles Cultured in Different Modes

Effects of Replacing Fish Meal with Enzymatic Cottonseed Protein on the Growth Performance, Immunity, Antioxidation, and Intestinal Health of Chinese Soft-Shelled Turtle (Pelodiscus sinensis)

Preparation of Fish Meal from Various Fishery Sources For Use in Young Common Carp Cyprinus carpio L. Diets

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