Mitigation and Adaptation Strategies for Global Change, 2021
Pen aquaculture technology, a low-cost aquaculture system for floodplain wetlands of India, was e... more Pen aquaculture technology, a low-cost aquaculture system for floodplain wetlands of India, was evaluated through a pilot study as an alternative livelihood for increasing adaptive capacity under changing climatic scenario. Five pens (100 m2 area each) were constructed in a floodplain wetland and provisions were made to adjust heights during the monsoon to prevent escapement of fish due to flooding to make it climate-smart adaptation system. Feasibility of culturing high-value locally preferred small indigenous fishes (SIFs), viz. Amblypharyngodon mola, Gudusia chapra and Puntius sophore, along with Indian major carps (IMC) was assessed. Five different species combinations were tested, i.e. P1 (IMC only), P2 (IMC + A. mola @ 30 no./m2), P3 (IMC + G. chapra @ 20 no./m2), P4 (IMC + P.sophore @ 20 no./m2) and P5 (IMC + all three SIFs @ 1/3 of stocking density of each species). The IMC (Labeo catla, L. rohita and Cirrhinus mrigala) were stocked @ 3 no./m2 in all the pens. After 5 months, highest net fish production was obtained from P2 (124.86 kg/pen) followed by P3 (120.19 kg/pen), P5 (105.15 kg/pen), P1 (89.91 kg/pen) and P4 (87.38 kg/pen). The range of water quality parameters recorded during the experimental period was in favourable concentration for fish culture. Economic feasibility analysis of the pen culture operation indicated that culturing IMC with G. chapra or A. mola was more profitable compared to other combinations. The study also showed successful natural recruitment of all the three SIFs in pens indicating that they could breed and continue to support their fishery unlike large carps. With successful culture of fish during flood season, encouraging growth of carps and recruitment of SIFs in pens, it emerged as a potentially effective climate-resilient system which could enhance income and livelihood of the fishers besides providing nutritional security in developing countries.
International Journal of Agricultural and Applied Sciences, 2020
The Moontail bull’s eye (Priacanthus hamrur) is one of the commonly available fish species found ... more The Moontail bull’s eye (Priacanthus hamrur) is one of the commonly available fish species found in the deep sea and under ledges or hovering next to coral heads during the day. In the present study, around 300 specimens were collected from different location in east and west coast of India including Kakinada, Kolkata, Cochin and Mumbai to investigate the stock differentiation among the populations. A total of 14 morphometric traits and 10 meristic counts were studied. The descriptive statistics of morphometric traits indicated the much larger growth in populations of west coast compares to the east coast. The meristic traits were not much efficient in identifying the stocks. Pre pelvic fin length, post anal fin length, post dorsal length, pre dorsal fin length, head length, eye diameter, body depth, caudal peduncle depth and dorsal fin base helped in the separation of stocks. All the four stocks have separate morphometric features. The present study will provide the baseline inform...
Marine catfish resources are distributed in the tropical Indo-Pacific region and form an importan... more Marine catfish resources are distributed in the tropical Indo-Pacific region and form an important part of demersal fish catches along the entire coastline of India. Out of total catfish catches in India, 99% of the catches are dominated by species of the genus Tachysurus. Almost 70% of the catch originated from the west coast. State-wise, the biggest offers were from Kerala and Maharashtra and Karnataka. Among the eight maritime states of India aside from Andhra and Tamil Nadu, the general nature in the production of catfishes is of increasing trend. The fisheries are essentially exploited by automated trawl (33%) trailed by mechanized gill netters (21%), non-automated gear (14%), purse seine (11%) hooks and line (10%) and dol net (5%). Overfishing is a noteworthy issue in catfish fisheries, seems they are abused widely by trawlers and purse seiners. The trademark proliferation, shoaling nature, and relocation of numerous species of marine catfishes made them simple focus for over-...
The present study was carried out in the upper stretch of Jenam river, a tributary of River Barak... more The present study was carried out in the upper stretch of Jenam river, a tributary of River Barak, which flows through Dima Hasao district of Assam. Conventional fishing gears are not found to be very effective in fast flowing hill streams. Therefore, the local inhabitants of such areas generally use many traditional fish catching devices suitable to the location for catching fishes from these fast flowing hill streams. One such traditional fishing method namely Hebua and Heba operated by Jeme-Naga tribe is discussed in the present study. These traditional devices generally developed based on behavioural biology of the fish species and evolved over many generations. Participatory Rural Appraisal (PRA) methodology was adopted to collect information about this indigenous fishing method. A total number of 26 fisher folks as well as village elders were consulted through one to one interaction for detail documentation of the fishing method. In both these fishing methods, fishes are trapp...
The present study was conducted in Dima Hasao district of Assam, hilly terrain region in North Ea... more The present study was conducted in Dima Hasao district of Assam, hilly terrain region in North Eastern state of India to assess the reproductive, growth performance and carcass traits of pigs raised under existing low input tribal backyard pig production system. Using an interview based structure pre-tested questionnaire, a collection of data pertaining to 150 tribal pig farmers across 15 villages in randomly selected five blocks viz., Maibang, Diyungbra, Harangajao, Mahur and New Sangbar, respectively (September, 2019 to April, 2020). Assessment of reproductive performance (n=28), growth performance (86) and carcass traits (n=12) were utilized in this study. Results obtained in this study were age at puberty, age at first conception and age at first farrowing were statistically significant (P
Nutrients requirement plays a very crucial role in regulating biological systems, immunological, ... more Nutrients requirement plays a very crucial role in regulating biological systems, immunological, health, lactation and reproductive performance in dairy cattle.Therefore, the present study was conducted to assess the effect of area specific mineral mixture supplementation on milk yield, reproductive performance and economic of dairy cattle for a period of 120 days. Experimental animals were selected randomly from four villages of Dima Hasao district of Assam. Twenty lactating crossbred cattle (n=20) were divided into two groups (10 milch cows/group) viz., treatment (T2-supplement of 50gm mineral mixture/cattle/day) and control (T1-no supplementation) in a completely randomized designed. Results revealed significant (P<0.05) improvement in milk yield by 1.36 litre per day (18.68%), reproductive performance and benefit cost ratio (3.55 vs 3.11) in the studied. Thus, mineral mixture supplementation in the diet of dairy cattle gave better results in improving milk yield and reproductive efficiency for sustainability livelihood in smallholders' dairy farming in hilly regions.
Mitigation and Adaptation Strategies for Global Change, 2021
Pen aquaculture technology, a low-cost aquaculture system for floodplain wetlands of India, was e... more Pen aquaculture technology, a low-cost aquaculture system for floodplain wetlands of India, was evaluated through a pilot study as an alternative livelihood for increasing adaptive capacity under changing climatic scenario. Five pens (100 m2 area each) were constructed in a floodplain wetland and provisions were made to adjust heights during the monsoon to prevent escapement of fish due to flooding to make it climate-smart adaptation system. Feasibility of culturing high-value locally preferred small indigenous fishes (SIFs), viz. Amblypharyngodon mola, Gudusia chapra and Puntius sophore, along with Indian major carps (IMC) was assessed. Five different species combinations were tested, i.e. P1 (IMC only), P2 (IMC + A. mola @ 30 no./m2), P3 (IMC + G. chapra @ 20 no./m2), P4 (IMC + P.sophore @ 20 no./m2) and P5 (IMC + all three SIFs @ 1/3 of stocking density of each species). The IMC (Labeo catla, L. rohita and Cirrhinus mrigala) were stocked @ 3 no./m2 in all the pens. After 5 months, highest net fish production was obtained from P2 (124.86 kg/pen) followed by P3 (120.19 kg/pen), P5 (105.15 kg/pen), P1 (89.91 kg/pen) and P4 (87.38 kg/pen). The range of water quality parameters recorded during the experimental period was in favourable concentration for fish culture. Economic feasibility analysis of the pen culture operation indicated that culturing IMC with G. chapra or A. mola was more profitable compared to other combinations. The study also showed successful natural recruitment of all the three SIFs in pens indicating that they could breed and continue to support their fishery unlike large carps. With successful culture of fish during flood season, encouraging growth of carps and recruitment of SIFs in pens, it emerged as a potentially effective climate-resilient system which could enhance income and livelihood of the fishers besides providing nutritional security in developing countries.
International Journal of Agricultural and Applied Sciences, 2020
The Moontail bull’s eye (Priacanthus hamrur) is one of the commonly available fish species found ... more The Moontail bull’s eye (Priacanthus hamrur) is one of the commonly available fish species found in the deep sea and under ledges or hovering next to coral heads during the day. In the present study, around 300 specimens were collected from different location in east and west coast of India including Kakinada, Kolkata, Cochin and Mumbai to investigate the stock differentiation among the populations. A total of 14 morphometric traits and 10 meristic counts were studied. The descriptive statistics of morphometric traits indicated the much larger growth in populations of west coast compares to the east coast. The meristic traits were not much efficient in identifying the stocks. Pre pelvic fin length, post anal fin length, post dorsal length, pre dorsal fin length, head length, eye diameter, body depth, caudal peduncle depth and dorsal fin base helped in the separation of stocks. All the four stocks have separate morphometric features. The present study will provide the baseline inform...
Marine catfish resources are distributed in the tropical Indo-Pacific region and form an importan... more Marine catfish resources are distributed in the tropical Indo-Pacific region and form an important part of demersal fish catches along the entire coastline of India. Out of total catfish catches in India, 99% of the catches are dominated by species of the genus Tachysurus. Almost 70% of the catch originated from the west coast. State-wise, the biggest offers were from Kerala and Maharashtra and Karnataka. Among the eight maritime states of India aside from Andhra and Tamil Nadu, the general nature in the production of catfishes is of increasing trend. The fisheries are essentially exploited by automated trawl (33%) trailed by mechanized gill netters (21%), non-automated gear (14%), purse seine (11%) hooks and line (10%) and dol net (5%). Overfishing is a noteworthy issue in catfish fisheries, seems they are abused widely by trawlers and purse seiners. The trademark proliferation, shoaling nature, and relocation of numerous species of marine catfishes made them simple focus for over-...
The present study was carried out in the upper stretch of Jenam river, a tributary of River Barak... more The present study was carried out in the upper stretch of Jenam river, a tributary of River Barak, which flows through Dima Hasao district of Assam. Conventional fishing gears are not found to be very effective in fast flowing hill streams. Therefore, the local inhabitants of such areas generally use many traditional fish catching devices suitable to the location for catching fishes from these fast flowing hill streams. One such traditional fishing method namely Hebua and Heba operated by Jeme-Naga tribe is discussed in the present study. These traditional devices generally developed based on behavioural biology of the fish species and evolved over many generations. Participatory Rural Appraisal (PRA) methodology was adopted to collect information about this indigenous fishing method. A total number of 26 fisher folks as well as village elders were consulted through one to one interaction for detail documentation of the fishing method. In both these fishing methods, fishes are trapp...
The present study was conducted in Dima Hasao district of Assam, hilly terrain region in North Ea... more The present study was conducted in Dima Hasao district of Assam, hilly terrain region in North Eastern state of India to assess the reproductive, growth performance and carcass traits of pigs raised under existing low input tribal backyard pig production system. Using an interview based structure pre-tested questionnaire, a collection of data pertaining to 150 tribal pig farmers across 15 villages in randomly selected five blocks viz., Maibang, Diyungbra, Harangajao, Mahur and New Sangbar, respectively (September, 2019 to April, 2020). Assessment of reproductive performance (n=28), growth performance (86) and carcass traits (n=12) were utilized in this study. Results obtained in this study were age at puberty, age at first conception and age at first farrowing were statistically significant (P
Nutrients requirement plays a very crucial role in regulating biological systems, immunological, ... more Nutrients requirement plays a very crucial role in regulating biological systems, immunological, health, lactation and reproductive performance in dairy cattle.Therefore, the present study was conducted to assess the effect of area specific mineral mixture supplementation on milk yield, reproductive performance and economic of dairy cattle for a period of 120 days. Experimental animals were selected randomly from four villages of Dima Hasao district of Assam. Twenty lactating crossbred cattle (n=20) were divided into two groups (10 milch cows/group) viz., treatment (T2-supplement of 50gm mineral mixture/cattle/day) and control (T1-no supplementation) in a completely randomized designed. Results revealed significant (P<0.05) improvement in milk yield by 1.36 litre per day (18.68%), reproductive performance and benefit cost ratio (3.55 vs 3.11) in the studied. Thus, mineral mixture supplementation in the diet of dairy cattle gave better results in improving milk yield and reproductive efficiency for sustainability livelihood in smallholders' dairy farming in hilly regions.
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