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Effects of dietary ascorbic acid on growth, hematology, intestinal histology, and resistance to Vibrio harveyi in early life stage of milkfish

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Title Effects of dietary ascorbic acid on growth, hematology, intestinal histology, and resistance to Vibrio harveyi in early life stage of milkfish
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Creator Sivaramakrishnan, T., Sathish Kumar, T., Sandeep, K.P., Bera, A., Raja, R.A., Sujeet Kumar., Kailasam M., Felix, N., and Ambasankar, K
 
Subject Larval feed · Chanos chanos · Vitamin C · Optimum requirement · Immune response
 
Description Not Available
A 45-day feeding experiment was conducted to examine the effect of dietary ascorbic acid (AA) supplementation on the
growth of milkfish larvae. Five isonitrogenous and isolipidic (580 g protein/kg and 120 g lipid/kg) experimental diets
were prepared with varying levels of AA supplementation at 0 (AA0), 250 (AA250), 500 (AA500), 1000 (AA1000), and 2000
(AA2000) mg ascorbic acid (L‐ascorbyl‐2‐polyphosphate) equivalent/kg diet. The experiment results revealed that milkfish
fed with 500 and 1000 mg/kg of AA showed significantly better (p < 0.05) performance in terms of final body weight, weight
gain, specific growth rate and survival rate. The highest level of red blood cells count in pre- and post-challenge groups
was recorded in AA500 group. Intestinal histology revealed that the length of villi, the thickness of lamina propria, and the
concentration of lymphoid cells in the lamina propria were observed to be more in AA500 and AA1000 compared with control,
AA250 and AA2000. AA supplementation at 1000 level (AA1000) had the best survival (93.3%) against Vibrio harveyi challenge
(5 × 105 CFU/fish) with significantly higher survival compared with control. Based on the curvilinear (polynomial) regression
analyses, the optimum final body weight, weight gain, specific growth rate, feed efficiency ratio, protein efficiency ratio, and
survival were obtained at dietary ascorbic acid levels of 1175, 1174, 1238, 1262, 1246 and 1174 mg/kg diet, respectively.
Accordingly, the optimum dietary ascorbic acid required for milkfish in a range of 1174 mg/kg to 1262 mg/kg is beneficial
for better health, survival, and growth. The findings of this study can be used as the baseline scientific information on the
ascorbic acid requirement for the formulation of a cost‐effective diet for milkfish larvae
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Date 2023-06-08T10:13:29Z
2023-06-08T10:13:29Z
2023-05-10
 
Type Research Paper
 
Identifier Sivaramakrishnan, T., Sathish Kumar, T., Sandeep, K.P., Bera, A., Raja, R.A., Sujeet Kumar., Kailasam M., Felix, N., and Ambasankar, K., 2023. Effects of dietary ascorbic acid on growth, haematology, intestinal histology, and resistance to Vibrio harveyi in early life stage of milkfish. Fisheries Science, https://doi.org/10.1007/s12562-023-01690-w
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http://krishi.icar.gov.in/jspui/handle/123456789/78157
 
Language English
 
Relation Not Available;
 
Publisher SPRINGER NATURE