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Journal of Biological Sciences
Year: 2007  |  Volume: 7  |  Issue: 2  |  Page No.: 327 - 332

Study on Production System of Existing Ducks at Potuakhali District of Bangladesh and Development of a Self-sustainable Ducks Rearing Model Under Semi-scavenging System at Farmer`s Condition

F. Kabir, M.S. Sultana, G. Mustafa, M.M.O. Rashid, M.S.I. Khan and M.A. Asgar    

Abstract: The experiment was conducted at Mirzagonj and Bauphol upazilas of Potuakhali district of Bangladesh to estimate the need for supplementary feeding of rearing ducks. In this experiment, 50 farmers were studied. Sxteen farmers were studied as control group (no supplementation) and other 34 farmers were studied as supplemental group, i.e., 17 farmers for Level-I (50% supplementation) and 17 farmers for Level-II (70% supplementation). The results showed that all the year round scavenging feeds are not available ad-libitum as per requirement for rearing ducks. It was observed that grazing season of ducks may be divided into lean season (summer) that is March to June, abundance season (rainy) that is July to October and moderately abundance season (winter) that is November to February. Rainy season appeared to be the best season for rearing ducks, followed by winter and summer. The results also showed that the crop and gizzard contents contain significantly (p<0.01) higher amount of ME and P in winter and in rainy season than that of summer. It was also observed that the crop and gizzard contents contain significantly (p<0.01) higher percentage of Ca in rainy season than those of winter and summer. The results indicated that the total live weight gain of ducks in supplemented Level-I and Level-II was significantly (p<0.01) higher than that of the total live weight gain of control group. The results also showed that the average daily live weight gain of ducks in supplemented Level-I and Level-II was 8.85 and 9.04 g, which was significantly (p<0.01) higher than that of the average daily live weight gain of control group (7.88 g). It was observed that the total dry matter (DM) intake of ducks in supplemented Level-II was significantly (p<0.01) higher than those of the total dry matter (DM) intake of ducks in supplemented Level-I and control group. It was revealed that the average daily dry matter (DM) intake of ducks in supplemented Level-II was significantly (p<0.01) higher than those of the average daily dry matter (DM) intake of ducks in supplemented Level-I and control group. The results showed that the average time of first lay in control group of ducks was significantly (p<0.01) higher than those of supplemented Level-I and supplemented Level-II. The average duck-day egg production of supplemented Level-I was 43.93% and supplemented Level-II was 45.53%, which was significantly (p<0.01) higher than that of the control group of ducks (23.45%). The observation revealed that the average egg weight of ducks in supplemented Level-I and supplemented Level-II was significantly (p<0.01) higher than that of the control group. The results showed that the average net return of supplemented Level-I was higher than those of the control group and supplemented Level-II group of ducks. It is concluded that only scavenging system of feeding cannot fulfill the nutritional requirements of growing and productive ducks. It may be suggested that minimum level of supplemental feeds should be given to the ducks for getting maximum production under semi scavenging system at farmer`s condition.

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