Effect of different stocking density on growth, survival on Litopenaeus vannamei (Boone, 1931) in summer and monsoon crop in province of Gujarat States in India

Kotiya, Anil; Vadher, K. H.

doi:10.18331/sfs2021.7.3.7

Cited by 3 publications

(2 citation statements)

References 16 publications

(32 reference statements)

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“…Hence, the growth rate in this study was within a good range with the DGR between 0.08 and 0.42 g before the mortality event as shown in Table 1. After a mortality event, the DGR of shrimp increased which can be attributed to research conducted by Kotiya and Vadher (2021), which demonstrated that shrimp growth is inversely proportional to stocking density. Consequently, the significant reduction in stocking density led to an increase in the DGR of shrimp.…”

Section: Growth Analysismentioning

confidence: 99%

A study on the effect of feed load on mortality of Pacific white shrimp Litopenaeus vannamei

Mohammed,

Gabbadon,

Ajmal

et al. 2024

Aquaculture Fish & Fisheries

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In recirculating aquaculture systems (RAS), understanding the relationship between feed load and its impact on water quality and overall shrimp health is important. This study utilised an indoor marine RAS for the intensive culture of Pacific white shrimp Litopenaeus vannamei. The shrimp were stocked into the grow‐out system at an average body weight of 0.25 g and a stocking density of 347 shrimp/m3. Water quality parameters of temperature, salinity, total dissolved solids, pH, and dissolved oxygen (DO) were measured twice daily. Total ammonia nitrogen (TAN), nitrite and nitrate were measured once weekly or when needed. Sampling was conducted to calculate the daily feed ratio based on the total estimated biomass. Mortality was recorded as a means of evaluating the overall shrimp health. The data obtained were analysed using Pearson correlation (r) analysis and multi‐linear regression with a significant difference accepted p < 0.05. Correlation (r) established relationships among the water quality parameters, feed load and mortality. The TAN level of 24.20 mg/L was recorded when the feed load increased by 81.2% resulting in the mortality of 40% of shrimp. A negative correlation between TAN and DO resulted in a synergistic effect causing a massive consumption of DO in the water, reducing its availability to the shrimp and leading to a drastic change in the shrimp's behaviour. Overfeeding can lead to an accumulation of uneaten feed and waste, causing ammonia spikes and oxygen depletion in the water. Monitoring and adjusting feed rates accordingly can help maintain optimal water conditions for shrimp growth and health. Therefore, it is essential to use appropriate feed rates in recirculating systems because feed load can influence water quality parameters that can be detrimental to shrimp culture.

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Section: Growth Analysismentioning

confidence: 99%

A study on the effect of feed load on mortality of Pacific white shrimp Litopenaeus vannamei

Mohammed,

Gabbadon,

Ajmal

et al. 2024

Aquaculture Fish & Fisheries

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“…In this farm economic section the various inputs cost contribution was calculated to produce one kg of shrimp in Amreli district and the details were furnished in ) will have higher survival%, low feed cost, high FCR, low fuel cost, total variable cost, low count (no of shrimp/kg), high price, higher net income and higher Net profit are all the parameters that shows that lower stocking density of shrimp ends with more net income compare with 40,50,60,70 and 80 (no of shrimp/m 2 ) of stocking density in pond [25].…”

Section: The Average Cost Analysis For the Cultured Shrimp Farming Un...mentioning

confidence: 99%

Economic Assessment of Litopenaeus vannamei (Boone, 1931) Culture with Different Stocking Density in Earthern Pond during Monsoon Season along Saurashtra Region of Gujarat Coast

Kotiya

Vadher

2022

AJARR

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Optimum use of coastal potential waste land into shrimp farming practice has given prosperity to coastal community of Rajula taluka of Amreli district. Shrimp farming in India has recorded remarkable growth in last three decades especially in coastal states. Economic assessment to shrimp farming experiment was conducted in commercial pond at Kavya Aqua Farm (Rajula) Amreli district of Saurashtra region, it’s a peninsular and southernmost part of Gujarat covering 793 hector area under shrimp farming with higher input costs in Litopenaeus vannamei farming business. The production potential and performance of the species was evaluated in low (30pc/m2) to high (80pc/m2) stocking density for 120 Days of culture in earthen pond conditions. This case study revealed that aquaculture is risky business but farmers still ponder it as a profitable venture with high status. A primary survey using structured interview was conducted with 25 shrimp producer in order to observe the following attributes: social profile, fixed cost, variable cost, yield of production, gross income and net income. At higher stocking rates (80pc/m2) has yielded better production with high count and FCR (feed conversion ratio). The present result indicates better economic return was recorded in low stocking density (30pc/m2) with low count (no of pcs/kg) at harvest. An attempt has been made to assess an economic viability of L.vannamei farming and extent of contribution towards the uplift of their socio-economic status. This study will be of immense support to encourage the farmers of other in and around areas to invest in shrimp farming business to earn better livelihood. Present shrimp farming experiment with different stocking density along with survey study revealed that for small and marginal farmers, L. vannamei farming can be made profitable by adopting lower affordable stocking rates and shrimp farming significant contribution in employment generation and infrastructure development of the coastal community and overall development of the coastal areas.

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Non-Invasive Methods for Assessing the Welfare of Farmed White-Leg Shrimp (Penaeus vannamei)

Pedrazzani¹,

Cozer

Quintiliano³

et al. 2023

Animals

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Gradually, concern for the welfare of aquatic invertebrates produced on a commercial/industrial scale is crossing the boundaries of science and becoming a demand of other societal actors. The objective of this paper is to propose protocols for assessing the Penaeus vannamei welfare during the stages of reproduction, larval rearing, transport, and growing-out in earthen ponds and to discuss, based on a literature review, the processes and perspectives associated with the development and application of on-farm shrimp welfare protocols. Protocols were developed based on four of the five domains of animal welfare: nutrition, environment, health, and behaviour. The indicators related to the psychology domain were not considered a separate category, and the other proposed indicators indirectly assessed this domain. For each indicator, the corresponding reference values were defined based on literature and field experience, apart from the three possible scores related to animal experience on a continuum from positive (score 1) to very negative (score 3). It is very likely that non-invasive methods for measuring the farmed shrimp welfare, such as those proposed here, will become a standard tool for farms and laboratories and that it will become increasingly challenging to produce shrimp without considering their welfare throughout the production cycle.

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Effect of different stocking density on growth, survival on Litopenaeus vannamei (Boone, 1931) in summer and monsoon crop in province of Gujarat States in India

Cited by 3 publications

References 16 publications

A study on the effect of feed load on mortality of Pacific white shrimp Litopenaeus vannamei

A study on the effect of feed load on mortality of Pacific white shrimp Litopenaeus vannamei

Economic Assessment of Litopenaeus vannamei (Boone, 1931) Culture with Different Stocking Density in Earthern Pond during Monsoon Season along Saurashtra Region of Gujarat Coast

Non-Invasive Methods for Assessing the Welfare of Farmed White-Leg Shrimp (Penaeus vannamei)

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