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Proximate Composition of Para-grass (brachiaria Mutica) Produced in Integrated Fish-fodder Culture System

MR Alam*
Department of Aquaculture, Patuakhali Science and Technology University, Patuakhali 8602, Bangladesh

MM Haque
Abstract Department of Aquaculture, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh

KR Sumi
Department of Aquaculture, Patuakhali Science and Technology University, Patuakhali 8602, Bangladesh

MM Ali
Abstract Department of Aquaculture, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh

Abstract/ Executive Summary:

An experiment was conducted to evaluate the effects of Pangasius pond sediment on the nutrient uptake by para-grass (Brachiaria mutica) during the period from March to October, 2011 in a Pangasius farm, Dhanikhola, Trishal, Mymensingh. Initially soil chemistry of Pangasius pond sediment and para-grass producing virgin soil was analyzed at the laboratory. The fodder was cultivated at various level of inorganic fertilizer with Pangasius pond sediment having three replications in each treatment. The size of each replication was 25 m²(5m×5m). The fodder was harvested at the pre-flowering stage (45 days after transplantation). After first cutting, experimental plot was irrigated, and again after 45 days of first cutting second cutting was done. After proper collection and preparation the para-grass samples and rice straw, their proximate composition analysis was done. The nutrient content of para-grass was also compared with rice-straw being used as dairy feed. The analytical results indicated that the nutrients content of Pangasius pond sediment was higher than the virgin soil which was the stimulating factor for para-grass growth and production. The basic nutrients such as crude lipid and protein content of para-grass were found increasing from first to second sampling. However, crude lipid and protein of para-grass at second sampling was found much higher than those of rice straw. Application of Pangasius pond sediment as alternative source of fertilizer enriched nutrient content of para-grass much higher than those of rice straw. Therefore, it could be argued that higher level of lipid and protein content of para-grass is the stimulating factor to dairy cattle production under integrated aquaculture–fodder grass production using Pangasius pond sediment.

Keywords: Pangasius pond sediment, Para-grass, Fodder Production, Integrated Aquaculture

Location: Bangladesh Agricultural University (BAU), Mymensingh

Start Date: 00-03-2011

End Date: 00-10-2011

Program Area: Animal Health and Management

Commodity: Fodder

Objectives:

To observe the proximate composition of para-grass (Brachiaria mutica) produced in integrated fish-fodder culture system.

Methodology:

Farm characteristics: The selected Pangasius farm has been running since 2003 which was mainly a grow-out farm. The area of the farm was about 2 ha and number of pond was 10. Each pond size was about 45 decimal with average of 1-1.5m water depth. The Pangasius were fed with farm made urea fertilizer. For the fruitful use of this resource, an experiment was designed in this research to produce para-grass in integrated fish-fodder culture system. The folder grass production is a critical issue of local dairy farming because a sharp decrease of grazing field negatively affected on dairy production, thus the nation is increasingly depending on the imported milk in Bangladesh. In this context, the objectives of the study were to assess nutrient potential of Pangasius pond sediment to find out the proximate composition of para-grass produced in integrated fish fodder culture system; and to compare the nutritional quality of para-grass and common feed (rice-straw) being traditionally fed to cattle. and commercial pellet feed. Groundwater was the main source of water with limited water exchange rate. About 120,000 kg feed was used during the year 2010 causing deposition of pond sediments. The sediments of pond bottom were removed 2-3 years interval and used to repair the pond dikes. Electricity supply and good communication system were functioning to the farm area. Experimental design For research plot preparation, Pangasius pond water was given to the experimental plot by using power pump. Then plot was tilled by using power tiller machine. Repeated plough was done after 7 days. Plot was labeled by using ladder and weeding was done manually. Then plot became ready to transplant the cuttings of para-grass. A Completely Randomized Design (CRD) was applied for the experiment of fodder grass production. The experiment had 6 treatments, and each with 3 replications. Thus, the total number of replications was 18 (6×3) and the size of each replication plot was 25 m² (5 m×5 m). A treatment was 0.5 m far away from another. Well planned dike was constructed around each of the treatments to avoid mixing of nutrients each other. Varied levels of Pangasius pond sediment with inorganic fertilizer were applied in Sediment analysis Sediment samples were collected and put in the previously labeled plastic bag and carried to laboratory. Then samples were dried out at room temperature. After drying samples were ground finely and sieved through a 0.03 mm meshed brass sieve and kept individually in labeled polythene bag for chemical analysis. Pond sediment and soil samples analysis was performed at the Soil Science Laboratory of the Department of Soil Science, Bangladesh Agricultural University (BAU) Mymensingh. After 45 days of planting, para-grass became ripened and samples from each treatment were collected and marked individually. Rice straw was collected from a cattle farm from the same village. Then well marked samples and straw were carried to the Fish Nutrition Laboratory, Department of Aquaculture, BAU. The grass samples and straw were ground by using a grinding machine. The second samples were taken after 45 days and prepared by following similar way. After the preparation of samples, proximate composition analysis of para-grass samples and rice straw were done by following the official methods of analysis by AOAC (2000). The analyses were performed at the Fish Nutrition Laboratory. Data analysis: Statistically, the nutrients content variation between Pangasius pond sediment and plot virgin soil were analyzed using independent sample t-test. Single factor analysis of variance (ANOVA) of the mean values of proximate components was done to test the significance of variation among treatments in terms of nutrient content of para-grass (Steel et al., 1980). Individual treatment difference was analyzed by Duncan’s Multiple Range Test (DMRT) at the probability of 0.01 to 0.05%.

Source of Information: Bang. J. Anim. Sci. 2015. 44(2): 113-119

Article Link (Online Journal): http://www.banglajol.info/index.php/BJAS/article/view/26011

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The nutrient content of para-grass was higher for the application of Pangasius pond sediment because pond sediment acted as a major source of nutrient for the grass production. After addition of pond sediment into soil, the productivity of soil was increased and ultimately increased the growth of grass and enriched nutrient in plant body. If a national strategy has taken holistic aquaculture development, the huge amount unused Pangasius pond sediment could be used to fertilize fodder grass for dairy cattle, and other crop production as part of integrated aquaculture – livestock –agriculture systems.

Knowledge Management: Journal