Understanding the economic and farming practices driving species selection in aquaculture within the Mymensingh division of Bangladesh
Understanding the economic and farming practices driving species selection in aquaculture within the Mymensingh division of Bangladesh
复制标题
了解孟加拉国迈门辛省水产养殖物种选择的经济和农业实践
DOI：
10.1007/s10499-021-00818-y
复制
发表时间：
2022
影响因子：
2.9
通讯作者：
Heal R
中科院分区：
文献类型：
--
作者：
Heal R
水产养殖是孟加拉国人口动物蛋白的主要供应商，迈门辛格区是鳍鱼水产养殖的主要贡献者，生产了池塘巴沙鱼总量的43%和罗非鱼总量的9%（2018年数据）。我们对Netrokona、Jamalpur和Mymensingh地区的鳍鱼养殖户进行了调查，以了解目前的鳍鱼养殖方式，并确定促使养殖户在巴沙鱼或罗非鱼养殖之间做出选择的因素。我们发现，Mymensingh的大多数鳍鱼养殖者都是经验丰富的从业者，他们实行混养，每种鱼类的放养密度都在一定范围内。使用混合养殖实践的经济模型，我们已经表明，在一个生产周期内，巴沙鱼的体重增长速度几乎是罗非鱼的4倍，从而产生更大的收入，并为其养殖提供了强大的动力。罗非鱼养殖的高水平可能会持续下去，因为它们的生产周期短，而且由于疾病造成的作物损失，经济风险也相应降低，这两个因素都为养殖罗非鱼提供了强大的动力。我们的研究结果还表明，在混养系统中，不同的物种选择导致了产量的差异。例如，混合养殖巴沙鱼、罗非鱼和鲤鱼的产量低于混合养殖巴沙鱼和罗非鱼的产量。此外，罗非鱼与鲤鱼共养殖的产量比巴沙鱼高，其原因尚不清楚，需要进一步研究。我们的研究使用了鳍鱼养殖户提供的信息，为鱼类品种选择提供了有用的指导，以最大限度地提高产量，从而提高池塘的食物产量。
Aquaculture is a major supplier of animal protein for Bangladesh’s population, and the Mymensingh division is a major contributor to finfish aquaculture, producing 43% of the total pond pangasius and 9% of the total amount of tilapia (figures from 2018). We conducted a finfish farmer survey covering Netrokona, Jamalpur and Mymensingh districts to understand current finfish farming practices and identify factors that drive farmers in their species choice between pangasius or tilapia cultivation. We found that most finfish farmers in Mymensingh are experienced practitioners and practise polyculture with a range of stocking densities for each species. Using an economic model of polyculture practice, we have shown that over a production cycle, pangasius gain body mass at a rate nearly 4 times greater than that for tilapia, resulting in substantially larger revenues and providing a strong incentive for their culture. High levels of tilapia aquaculture likely persist due to their short production cycle and an associated decreased economic risk due to crop loss from disease, both factors providing a strong incentive for their culture. Our findings also indicate production yield differences through different species selection in polyculture systems. For example, co-culturing pangasius, tilapia and carp together was less productive than co-culture of pangasius with tilapia. Furthermore, higher yields of tilapia were obtained when co-cultured with carp compared with pangasius, the reasons for which are not known and warrant further investigation. Our study uses information provided by finfish farmers to produce a useful guide on fish species choices to maximise production yields, and therefore food production, from their ponds.
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影响因子：
--
作者：
Shamsuzzaman, Md Mostafa;Islam, Mohammad Mahmudul;Xu, Xiangmin
通讯作者：
Xu, Xiangmin
影响因子：
2
作者：
Ali, Hazrat;Haque, Mohammad Mahfujul;Belton, Ben
通讯作者：
Belton, Ben
孟加拉国水产养殖和鱼类消费回顾
DOI：
--
发表时间：
2011
期刊：
影响因子：
--
作者：
B. Belton;M. Karim;S. Thilsted;K. Murshed;W. Collis;M. Phillips
通讯作者：
M. Phillips
影响因子：
3.7
作者：
Haque, Mohammad Mahfujul;Alam, Md Rushna;Murshed-E-Jahan, Khondker
通讯作者：
Murshed-E-Jahan, Khondker