The effects of dietary enzyme on some blood biochemical parameters of the cultured great sturgeon Huso huso juveniles

Ghomi, Mohammad Reza; Shahriari, Ramezan; Langroudi, Hamid Faghani; Nikoo, Mehdi

doi:10.1007/s00580-011-1265-9

Cited by 6 publications

(5 citation statements)

References 22 publications

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“…The expansion of global aquaculture is increasing the demand for aquaculture feed, which is the prime input in fish culture practices (Singh et al, 2011). The supplied diet must contain the necessary nutritional requirements for the fish to ensure the best growth (Ghomi et al, 2012). World aquaculture is the fastest growing food-producing sector in the world.…”

Section: Introductionmentioning

confidence: 99%

Effect of Dietary Lysine and Methionine Supplementation on the Growth and Physiological Responses of Pearlspot Fingerlings, Etroplus suratensis

Ruby

Ahilan

Antony

et al. 2022

IJAR

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Background: Successful and sustainable culture of finfish and shellfish depends on the use of nutritionally balanced, low-cost and eco-friendly feeds. This experiment was conducted to evaluate the effect of dietary supplementation of lysine and methionine on the growth and physiological responses of juvenile pearlspot, Etroplus suratensis. Methods: Fingerlings with an average initial body weight of 8.7±0.04 g were distributed to the 300 L FRP tank (n=30 pieces/tank). The pearl spot fingerlings were fed with isonitrogenous (25% Crude protein) feeds supplemented with methionine (1.8, 2.2 and 2.6 g/100 g of diet) and lysine (0.5, 0.9 and 1.3 g/100 g of diet). The growth performance and physiological response of the fishes were assessed. The feeding trial was conducted for a period of 60 days. Result: The methionine supplemented diets at 2.2 g/100 g (T2) and Lysine supplemented diet at 0.9 g/100 g (T5) yielded the best results within the treated groups in terms of average body weight gain, FCR (feed conversion ratio), SGR (specific growth rate), PER (protein efficiency ratio) and FER (feed efficiency ratio). The maximum mean body weight gain recorded in methionine supplemented diet was 20.68±0.20 g in T2 and the maximum mean body weight gain recorded in lysine supplemented diet was 19.6±0.15 g in T5. The mean body weight gain in control was recorded as 12.12±0.20 g. The present study revealed that methionine incorporation at 2.2 g/100 g (T2) and lysine incorporation at 0.9 g/100 g (T5) resulted in better growth performance of the pearl spot Etroplus suratensis fingerlings. Results of challenge tests confirmed that V. anguillarum could act as a primary pathogen for pearlspot reared in freshwater. In the present study, the Hb, RBC, MCV, MCH and MCHC were also affected by dietary methionine and lysine supplementation and were found significantly (p less than 0 .05) higher in fish fed methionine at 2.2% and lysine at 0.9% of diet, indicating that dietary methionine and lysine supplementation activates immune response and promotes fish health. Second-order polynomial regression analysis of weight gain against dietary methionine and lysine levels indicated that the optimum dietary methionine and lysine requirement for maximum growth and feed utilization of pearlspot fingerlings was methionine at 2.2% and lysine at 0.9%.

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Section: Introductionmentioning

confidence: 99%

Effect of Dietary Lysine and Methionine Supplementation on the Growth and Physiological Responses of Pearlspot Fingerlings, Etroplus suratensis

Ruby

Ahilan

Antony

et al. 2022

IJAR

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“…The beluga (Huso huso) and the sevruga (Acipenser stellatus) are of the most important species of sturgeon sh (Acipenseridae) inhabited in the Caspian Sea in the north of Iran with a high demand for products such as caviar, meat, skin, and cartilage (Ghomi et al 2012; Asgari et al 2013;Hashemi et al 2018). Today, the sturgeons are considered as the vulnerable sh species for different reasons like over shing for production of meat and caviar, water pollution and destruction of their natural habitat (Babaei et al 2011;Ghasemi et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Physicochemical and biochemical properties of intestinal trypsin from sturgeon fish

Zamani

Khajavi

Kenari

et al. 2022

Preprint

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This work aimed to determine the physicochemical and biochemical characterization of the intestinal trypsin from beluga (Huso huso) and sevruga (Acipenser stellatus), two highly valuable sturgeon species, by a series of assays. According to the results obtained from casein-zymogram and inhibitory activity staining method, indicating the existence of trypsin in the intestinal crude extract of both species, molecular weight of the enzyme was estimated to be 27.5 and 29.5 kDa in sevruga and beluga, respectively. Optimum pH and temperature of both trypsins were recorded at 8.5 and 55°C by BAPNA (a specific substrate), respectively. The stability of both trypsins was well preserved at pH from 6.0 to11.0 and temperatures of up to 50°C. TLCK and SBTI, two specific trypsin inhibitors, showed a significant inhibitory effect on the enzymatic activity of both trypsins (P < 0.05). The enzyme activity was significantly increased in the presence of Ca+ 2 and surfactants and decreased by oxidizing agents, Cu+ 2, Zn+ 2 and Co+ 2 (P < 0.05). However, univalent ions Na+and K+ did not show any significant effect on the activity of both trypsins (P > 0.05). Therefore, the results of our study can contribute to the clear understanding of the intestinal trypsin activity in beluga and sevruga under evaluated experimental conditions.

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“…Enzymes reduce the quality and quantity of available substrate for microbes, decrease the viscosity of intestinal contents and increase the rate of substance transmission by increasing the rate of digestion and production of simple sugars from diet fibre, thus reducing the harmful microbial population of the intestine. Enzymes also reduce fermentation in the intestine and increase fermentation in the cecum by increasing the digestibility of dietary nutrients (Ghomi et al., 2012; Sun & Kim, 2019). Some substances digested by gastrointestinal enzymes may not be absorbed in the small intestine and be transferred to the cecum, thus increasing bacterial fermentation in the cecum (Ghomi et al., 2012).…”

Section: Introductionmentioning

confidence: 99%

“…Enzymes also reduce fermentation in the intestine and increase fermentation in the cecum by increasing the digestibility of dietary nutrients (Ghomi et al., 2012; Sun & Kim, 2019). Some substances digested by gastrointestinal enzymes may not be absorbed in the small intestine and be transferred to the cecum, thus increasing bacterial fermentation in the cecum (Ghomi et al., 2012). It has been reported that enzyme supplements can increase the growth performance of poultry by up to 10% (Daghigh Kia et al., 2017).…”

Section: Introductionmentioning

confidence: 99%

Effect of different levels of bioplex manganese along with probiotics and multi‐enzymes on performance and immune system indices of broilers

Babaei

Fakhraei

Yarahmadi

et al. 2021

Veterinary Medicine & Sci

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The effects of dietary enzyme on some blood biochemical parameters of the cultured great sturgeon Huso huso juveniles

Cited by 6 publications

References 22 publications

Effect of Dietary Lysine and Methionine Supplementation on the Growth and Physiological Responses of Pearlspot Fingerlings, Etroplus suratensis

Effect of Dietary Lysine and Methionine Supplementation on the Growth and Physiological Responses of Pearlspot Fingerlings, Etroplus suratensis

Physicochemical and biochemical properties of intestinal trypsin from sturgeon fish

Effect of different levels of bioplex manganese along with probiotics and multi‐enzymes on performance and immune system indices of broilers

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