Effects of ration level on growth, nitrogenous excretion and energy budget of juvenile yellow catfish, Pelteobagrus fulvidraco (Richardson)

Zhang, Lei; Zhao, Zhigang; Xiong, Dongmei; Wei, Fang; Li, Bo; Fan, Qi-Wen; Yang, Kai; Wang, Xiaoyin

doi:10.1111/j.1365-2109.2010.02626.x

Cited by 15 publications

(16 citation statements)

References 28 publications

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“…The excessive feeding level induced fat accumulation and histopathological lesions in the liver of GIFT fry, which provided additional evidence that the high feeding rate was suboptimal. Whole-body proximate composition of fish has been used to indicate fish quality and determine the optimum frequency and rate for feeding (Zhang et al 2011). Feeding rates FIGURE 1.…”

Section: Discussionmentioning

confidence: 99%

Feeding Frequency and Rate Effects on Growth and Physiology of Juvenile Genetically Improved Farmed Nile Tilapia

Qing

Huang

et al. 2015

N American J Aquac

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To establish an effective feeding regime for the aquaculture of genetically improved farmed Nile Tilapia Oreochromis niloticus (GIFT), this experiment investigated the effects of feeding frequency and daily ration on the growth of GIFT fry (initial weight, ca. 0.85 g). A factorial experiment design of two feeding frequencies (2 and 3 meals/d) and five feeding rates (2, 4, 6, 8, and 10% body weight per day [BW/d]) was carried out over 70 d with three replicates for each treatment. At the end of the experiment, fish from each treatment were sampled for the growth metrics of final body weight (Wt), weight gain rate (WGR), survival rate (SR), specific growth rate (SGR), and feed conversion ratio (FCR), as well as body composition and plasma metabolite measurements and histopathological analysis. The feeding frequency had a significant (P < 0.05) effect only on the Wt of fish. Feeding rates had highly significant effects on all the growth metrics (P < 0.01) except SR. The largest WGR and SGR were both observed in the fish receiving 6% BW/d at both feeding frequencies. The largest Wt was observed in the fish fed two meals daily at a 6% feeding rate. The relatively lower hepatosomatic index, liver contents, and body lipid also indicated better performance in fish that received 6% BW/d. In conclusion, these results suggest that a feeding rate of 6% BW/d and a feeding frequency of 2 meals/d is the most favorable protocol for the growth and physiological balance of GIFT during the fry phase.

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Section: Discussionmentioning

confidence: 99%

Feeding Frequency and Rate Effects on Growth and Physiology of Juvenile Genetically Improved Farmed Nile Tilapia

Qing

Huang

et al. 2015

N American J Aquac

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“…Feces were siphoned 2 hr after feeding, dried to constant weight and then weighed for use according to Zhang et al. ().…”

Section: Methodsmentioning

confidence: 99%

“…Quantitative feed was soaked in water for 1 hr, then siphoned, dried, and weighed in order to estimate the remnant recovery and to adjust the food ingestion. Feces were siphoned 2 hr after feeding, dried to constant weight and then weighed for use according to Zhang et al (2011).…”

Section: Experiments Designmentioning

confidence: 99%

Effects of ammonia on growth, digestion and antioxidant capacity in juvenile yellow catfish Pelteobagrus fulvidraco (Richardson, 1846)

2016

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SummaryEffects of ammonia stress on food ingestion, growth, digestion and antioxidant capacity were investigated in juvenile yellow catfish Pelteobagrus fulvidraco (Richardson) with initial body weights of 20.24 ± 0.18 g. The fish were reared in triplicate in 15 experimental tanks at a rate of 30 fish per tank for 56 days. Water was maintained at a dissolved oxygen (DO) level of over 6.2 mg L . The results show that the survival, FI, SGR, FCE, and ADC decreased significantly with an increase in total ammonia nitrogen (p < .05), and a significantly negative correlation between SGR and total ammonia nitrogen levels (p < .05). T-AOC, SOD, CAT, GSH-PX and GSH in the blood, liver and gills were found to decline significantly with an increase in the total ammonia nitrogen level (p < .05), while the MDA in the blood, liver and gills was elevated significantly with the increase in total ammonia nitrogen (p < .05). The results indicate a threshold in the induction of the T-AOC and activities of antioxidant enzymes in yellow catfish tissues with a total ammonia nitrogen increase. In the present study the total ammonia nitrogen threshold thus changed from 6.72 mg L −1 in the juvenile yellow catfish.

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“…Within the optimum feeding rate range, there is a significant linear relationship between the feeding rate and the growth rate, and fish growth tends to stabilize or decline when the feeding rate is above the optimum (Zhang et al . ). Numerous studies of fish have shown that increasing the feeding frequency can promote growth to a certain extent, but beyond a certain range, there is no obvious promotional effect (Dwyer et al .…”

Section: Factors Influencing Fish Feedingmentioning

confidence: 97%

Intelligent feeding control methods in aquaculture with an emphasis on fish: a review

Zhou

Kai

et al. 2017

Reviews in Aquaculture

134

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In aquaculture, feeding is the primary factor determining efficiency and cost, so it is important to know when to stop feeding to maximize efficiency. Until now, fish feeding has been mostly based on artificial discrimination, which is usually time‐consuming and laborious. In recent years, intelligent feeding control according to changes in behaviour and growth status has gained increasing attention. This approach involves many methods as well as monitoring and feedback equipment and can automatically determine the feeding demands of fish. This review summarizes the development of intelligent feeding control methods, such as mathematical models, acoustic methods and computer vision, in aquaculture over the past three decades. All methods have unique application scenarios and models for the culture to which they are most suitable, and the advantages and disadvantages of each method in the laboratory as well as in pond, cage and recirculating aquaculture systems are analysed. Studies show that improvements in sensor accuracy and hardware and software processing speed have promoted the development of new technologies and methods, providing effective or potential support for intelligent feeding control. However, its accuracy and intelligent are still need to be improved to meet the needs of actual feeding scenarios. Through close collaborations between engineers and fish behaviourists, the feeding machine and system will be more elaborate and precise on the basis of the above methods, and the level of intelligence will be further improved.

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Effects of ration level on growth, nitrogenous excretion and energy budget of juvenile yellow catfish, Pelteobagrus fulvidraco (Richardson)

Cited by 15 publications

References 28 publications

Feeding Frequency and Rate Effects on Growth and Physiology of Juvenile Genetically Improved Farmed Nile Tilapia

Feeding Frequency and Rate Effects on Growth and Physiology of Juvenile Genetically Improved Farmed Nile Tilapia

Effects of ammonia on growth, digestion and antioxidant capacity in juvenile yellow catfish Pelteobagrus fulvidraco (Richardson, 1846)

Intelligent feeding control methods in aquaculture with an emphasis on fish: a review

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