Growth and protein content of mud crabs (Scylla serrata) fed with different natural feeds | Research Paper by JBES Journals

 

Mr. Leilidyn Y Zurbano*, Mary Lynn M Mariposque, Lyka M Buenaobra, and Mr. John Christopher Marquez from the institute of the Agribusiness Department, Polytechnic University of the Philippines, Lopez Quezon, Philippines, developed a research work entitled "Growth and protein content of mud crabs (Scylla serrata) fed with different natural feeds," published by the Journal of Biodiversity and Environmental Sciences | JBES, on March issue 2021, Volume 18, under the publication of the International Network For Natural Sciences | INNSPUB.

Abstract

Mud crab (Scylla serrata) farming is one of the main sources of livelihood in Calauag, Quezon. Commonly, they use trash fish as their major source of feeds for mud crabs. However, fluctuation on its prices happen because of supply and demand, thus the use of other natural feeds were conceptualized. This aimed to determine if there are significant differences on the weight, protein content and meat characteristics of mud crabs fed with different natural feeds. It also aimed to assess the profitability of mud crab farming in plastic cages using different natural feeds. The experiment was laid out in Complete Randomized Design with three treatments replicated thrice: T1 – trash fish, T2 – horn snail meat and T3 – yellow corn. Results revealed that mud crabs fed with horn snail had the highest weight and protein content as compared to the other treatments. Hence, had the highest ROI. While, in the sensory analysis of its meat characteristics, mud crabs fed with yellow corn had the highest mean which was rated as very much juicy, flavorful, and very much acceptable.

Introduction

Mud crab aquaculture has been practiced for many years in Southeast Asia, including the Philippines. It is based predominantly on capture and fattening of juvenile crabs from the wild. However, nowadays, mud crab farmers resort to culture of crablets also to be sold to other farmers. It is available in brackish coastal waters and estuaries and has a great potential for aquaculture. Crab culture and fattening are nevertheless, still in the trial stage in South Asia (Samarasinghe et al., 1992). However, some parts of the Philippines are into mud crab farming since they have experienced it to be profitable. Its prominence as an export commodity has also unlocked great opportunities for crab farming. The mud crab remains species with good potential for aquaculture due to its fast growth and good market acceptability and price. There have been rise in demand for the live mud crabs than the supply in the world market. Because of their delicacy and larger size, the live mud crabs are always in greater demand and fetch a higher price (Kathirvel, 1993). The high price of mud crabs provides a strong incentive for mud crabs fishing as it can be among the major source of income for the coastal people and contributes to the national income. 

Mud crabs or ‘alimango’ in Filipino is considered one of the most important foods from the sea. Commonly, mud crab is fed with trash fish - marine fish having little or no market value as human food but used sometimes in the production of fish meal. Another type of feed is the telescope snail meat which is locally known as bagongon. Yellow corn, on the other hand, is sometimes used as feed which has the greater contribution in the growth and survival of different fishery products (Rabia, 2015). Since mud crabs in the locality uses only trash feeds as source of feeds and because of its fluctuating price in the market, the idea of using other natural feeds was conceptualized. Thus, this study aimed to determine the effects of different natural feeds on the weight, protein content and meat characteristics of mud crabs. Profitability using those natural feeds were also assessed. This study would greatly benefit mud crab farmers since they will have now an option on what to give to the crabs to increase growth and eventually profit or to make their crabs more palatable and meaty. Moreover, consumers can be assured that the mud crabs are free from synthetic chemicals. The scope of the study was only limited to one growing period. The study was conducted from June 2019 to September 2019 at Calauag, Quezon. 

Source: JBES Journals by INNSPUB

Journal of Biodiversity and Environmental Sciences | JBES, welcome all respective authors to submit their research paper, review paper, short- communication in the major fields of Environmental Sciences and Biodiversity with low article processing charges (APC). JBES is a fast and peer-reviewed journal and is scheduled to publish 12 issues in a year. It publishes original research papers, short communications, and review papers on the main aspects of Environmental Sciences, Biology, Atmospheric Sciences, Environmental chemistry, Earth science, Ecology, Forestry, Agroforestry, Biodiversity, Taxonomy, Ethno botany, Vegetation survey, Bioremediation, Geosciences, Organisms, and Conservation of Natural sciences.

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Responsiveness of Cauliflower (Brassica oleraceae var. botrytis L.) to micronutrients | IJAAR 2021

Author Name

• M. Irfan Ashraf, M. Mujahid, and M. Bilal Shaukat from the Institute of Horticultural Sciences, University of Agriculture, Faisalabad, Pakistan.
• Bakhatawar Liaqat from the Department of Botany, University of Agriculture, Faisalabad, Pakistan.
• Mubeen Sarwar from the Department of Horticulture, Punjab University, Lahore, Pakistan.
• M. Abdullah from the Durum Wheat Technologist, Wheat research Institute, AARI, Faisalabad, Pakistan.

 Abstract

Cauliflower (Brassica oleracea L. var. botrytis) a cool season vegetable which belongs to the family Cruciferae or Brasicaceae. It is grown in winter season. It is originated from Europe and developed from broccoli. It is a vegetable crop grown for its edible white and tender curd developed from short floral parts. It is very sensitive to low temperature and high heat. The aim of this study is to determine the effect of foliar application of boron, iron and molybdenum on cauliflower growth, quality and yield. The study was carried out in Vegetable Research Area of Institute of Horticultural Sciences, University of Agriculture Faisalabad in 2019-2020. Seedlings of 30 days were raised then transplanted to field in Randomized Complete Block Design (RCBD) using three replicates. Different doses of micronutrients were applied as foliar spray like boron (0.2%, 0.5%), iron (0.2%, 0.5%) and molybdenum (0.1%, 0.3%) on cauliflower. The data for different vegetative and biochemical parameters including plant height (cm), number of leaves plant^-1, number of days taken from transplantation to curd formation, days to curd initiation to maturity, foliage fresh weight (g), foliage dry weight (g), curd weight (g), curd area (cm²), leaf area (cm²), curd color, vitamin C (mg/g), chlorophyll content (spad meter), total soluble salts (Brix°), yield per plant (kg) and yield per hectare (ton) was recorded and statistically analyzed. It can be concluded that among all the treatments T₇ (Mo: 0.1% + Fe: 0.5% + B: 0.5%) showed the best result for all parameters.

Journal Name

 International Journal of Agronomy and Agricultural Research | IJAAR

Publisher Name

International Network For Natural Sciences | INNSPUB

 Introduction

Cauliflower (Brassica oleracea L. var. botrytis) a cool season vegetable which belongs to the family Cruciferae or Brasicaceae. It is grown in winter season. It is originated from Europe and developed from broccoli (Anonymous, 2017). It is a vegetable crop grown for its edible white curd which is developed by short floral parts. Cauliflower is very sensitive to lowest and highest temperature but it grows best in cool area (Sani et al., 2018).

Cauliflower (Brassica oleracea L. var. botrytis) is grown all over the word but mostly in Bangladesh. Recently in 2016 it was reported that China and India globally producing 25.2 MT of cauliflower while the United States, Spain, Mexico and Italy are secondary producers which are generating 0.4 to 1.3 MT productions annually (FAOSTAT, 2017). Among all these countries, Pakistan is 10th producer of cauliflower, generating 209010 tonnes production by 11420 hectare cultivated area annually (Anjum et al., 2016). Cauliflower is a very tasty crop which is a source of different vitamins including thiamine, riboflavin, nicotinic acid and minerals like magnesium and calcium and a good amount of proteins as well (Yadav et al., 2014). Most of the crops need macro and micronutrients in specific amounts to grow well and to produce maximum production as well. The micronutrients are very important as macronutrients. Plant needs micronutrients in small amount that are required to produce good growth, quality and yield of the crop. Their trace amount can efficiently increase the overall crop production (Yadav et al., 2018).

The micronutrients that are needed to plants in trace amount are boron, copper, manganese, iron, zinc, molybdenum and chlorides which can be available to plant by soil, fertilizers or by other sources of these nutrients (Dubey et al., 2015). The micronutrients act as catalyst to improve the different biochemical reactions in the plant that triggered the plant growth and production (Karthick et al., 2018). However, deficiency of trace elements can induce different physiological disorders which leads towards the reduction in plants growth and ultimately in quality and production of crops (Sharma and Kumar, 2016).

Boron primarily improves the calcium metabolism and its solubility and also assists in uptake of nitrogen by plants (Pandav et al., 2016). Another microelement, the molybdenum is required to plants for nitrates assimilation and the atmospheric nitrogen fixation, it is also involve in processes of sulpher metabolism and proteins synthesis. Its trace amount positively affects the formation of carotenoids and also helps in translocation of iron element in plants (Das, 2018).

Iron, the essential trace element needed by plants for their proper functioning. It plays a vital role in chlorophyll synthesis and assists in uptake of other essential elements (Pandev et al., 2016). However, the micronutrients play vital role in better growth and development of crops. The production and quality of crops is decreasing, therefore micronutrient applications to maintain health of the soil, crop production and quality as well are the immense needs of the era. Micronutrients are helpful in improving growth, yield, fruit setting, post-harvest life of crops and resistantance development against stresses.

Therefore, the present research was conducted to examine the effect of different doses of micronutrients like boron (B), molybdenum (Mo) and iron (Fe) on cauliflower growth, quality and yield.
Source: Responsiveness of Cauliflower (Brassica oleraceae var. botrytis L.) to micronutrients

International Journal of Agronomy and Agricultural Research | IJAAR, welcome all respective authors to submit their research paper, review paper, and short-communication in the major fields of Agronomy and agricultural research. It publishes original scientific work in all areas of Agronomy and Agricultural sciences. The scopes of the journal include but are not limited to, the following topic areas: Agricultural Sciences, Agronomy, Crop Science Horticulture, Plant Protection, Breeding, Genetics, Pathology, Soil sciences, Animal sciences, Marine lives, Food & Fibre improvement and production. IJAAR publishes 12 issues in a calendar year.

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