Microalgae in aquafeeds for a sustainable aquaculture industry

2017 ◽  
Vol 30 (1) ◽  
pp. 197-213 ◽  
Author(s):  
Mahfuzur Rahman Shah ◽  
Giovanni Antonio Lutzu ◽  
Asraful Alam ◽  
Pallab Sarker ◽  
M. A. Kabir Chowdhury ◽  
...  
2019 ◽  
Vol 11 (9) ◽  
pp. 2603 ◽  
Author(s):  
Vilde S. Amundsen ◽  
Tonje C. Osmundsen

To account for the many challenges of increasingly global industries, remote regulation measures such as sustainability standards have become continuously more important as a means to ensure global accountability and transparency. As standard certification is assessed through audits, the legitimacy of these standards rests on uncritically evoked norms of auditing, such as independence and objectivity. In this paper, we seek to investigate the claim of these norms as a prerequisite for the audit process of sustainability standards. Based on interviews and fieldwork in the salmon aquaculture industry, we explore how it is possible to concurrently uphold the standard and account for the different conditions of the many local realities. Our findings point to the interactional character of audits, often downplayed for legitimacy purposes, and how this is vital to achieve both ‘distance for neutrality’ and ‘proximity for knowledge production’. We argue for increased transparency concerning the human element of sustainability auditing, thus acknowledging the significance of reciprocal knowledge production when using standards as a route towards sustainability.


2021 ◽  
Vol 934 (1) ◽  
pp. 012051
Author(s):  
J D Pacho ◽  
A L Avillanosa ◽  
A P Avillanosa ◽  
C M A Caipang ◽  
R S Dagaraga ◽  
...  

Abstract Catching of wild freshwater prawns in Palawan is done by using different fishing gears, including baited traps. However, there are only limited studies related to the efficiency of these traps on catching freshwater prawns. In this study, the efficiency of four different traps (traditional plastic traps, bamboo traps, modified traps, and rattan traps) and three baits (low-valued fish, grilled coconut, and octopus) was tested in catching live Macrobrachium spp. from the rivers of two localities in the Barangay Bagongbayan, Roxas and Sitio Catama, Dumaran, Palawan at two sampling events with 12-hr intervals along the river bank. Each trap was deployed randomly 5-8 meters apart in the collection site late afternoon and retrieved the following day. The highest catch was obtained using plastic traps with low-value fish as bait. All samples from the different traps were collected alive. Modifications are underway to improve the design of these traps to improve catch efficiency. Regulating the collection of Macrobrachium from the wild by developing it into broodstocks will support the sustainable aquaculture industry using hatchery-produced seedstocks instead of sourcing it from the wild.


2019 ◽  
Vol 19 (4A) ◽  
pp. 167-174
Author(s):  
Do Huu Hoang

In the last three decades aquaculture is a rapidly developing sector worldwide and antibiotics are used popularly as growth promoter. Antibiotic use was banned because research proved that antibiotic has caused many effects on environment and human health. Therefore, finding antibiotic alternatives is the first priority. The most prospect products today are probiotic and prebiotic. β-glucan is one of the immunostimulants which showed a variety of benefits to the health of many aquaculture species. In this paper only the results of β-glucan, a kind of prebiotic supplied in aquaculture, were summarized. The major benefit of β-glucan are to boost growth, to reduce mortality, to enhance tolerance or stress resistance to environmental or pathogen challenges. Although the applications of β-glucan are popular worldwide, its use in aquaculture in Vietnam is still limited. This paper provides an important reference for β-glucan utilisation which may help to develop a sustainable aquaculture in Vietnam.


2004 ◽  
Vol 33 (2) ◽  
pp. 796
Author(s):  
Junda Lin

Author(s):  
Suhendar I Sachoemar ◽  
Suhendar I Sachoemar ◽  
Tetsuo Yanagi ◽  
Tetsuo Yanagi ◽  
Mitsutaku Makino ◽  
...  

The development of sustainable model of aquaculture by applying Sato Umi concept within coastal area of Indonesia has expanded from the center of first experiment in the northern coastal area of west Java to central Java (western Indonesia) and Bantaeng in the South Sulawesi of central Indonesia. The similar program has also been proposed for Maluku Province in the eastern part of Indonesia. In the next 5 years, Indonesia is developing the Techno Parks Program in some areas, in which aquaculture and fisheries activities development on the base of Sato Umi concept in the coastal area are involves in this program. The development of Techno Parks are directed as a center application of technology to stimulate the economy in the regency, and a place of training, apprenticeship, technology dissemination center, and center business advocacy for the public. Hopely, Sato Umi concept that has a similar spirit with Techno Park can be applied to support the implementation of Techno Park program in Indonesia


Animals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 2167
Author(s):  
Ehsan Ahmadifar ◽  
Hamideh Pourmohammadi Fallah ◽  
Morteza Yousefi ◽  
Mahmoud A. O. Dawood ◽  
Seyed Hossein Hoseinifar ◽  
...  

The crucial need for safe and healthy aquatic animals obligates researchers in aquaculture to investigate alternative and beneficial additives. Medicinal herbals and their extracts are compromised with diverse effects on the performances of aquatic animals. These compounds can affect growth performance and stimulate the immune system when used in fish diet. In addition, the use of medicinal herbs and their extracts can reduce oxidative stress induced by several stressors during fish culture. Correspondingly, aquatic animals could gain increased resistance against infectious pathogens and environmental stressors. Nevertheless, the exact mode of action where these additives can affect aquatic animals’ performances is still not well documented. Understanding the mechanistic role of herbal supplements and their derivatives is a vital tool to develop further the strategies and application of these additives for feasible and sustainable aquaculture. Gene-related studies have clarified the detailed information on the herbal supplements’ mode of action when administered orally in aquafeed. Several review articles have presented the potential roles of medicinal herbs on the performances of aquatic animals. However, this review article discusses the outputs of studies conducted on aquatic animals fed dietary, medicinal herbs, focusing on the gene expression related to growth and immune performances. Furthermore, a particular focus is directed to the expected influence of herbal supplements on the reproduction of aquatic animals.


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