An experiment on induced breeding of gang magur, Hemibagrus menoda (Hamilton, 1822) using Ovatide hormone was carried out at in the Field Laboratory Complex of Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh. This study consists of three treatments each with three replications. The objective of the experiment was to find out the effective dose of Ovatide hormone for induced breeding. A total number of 54 brood fish were used for the experiment among which 36 were male and 18 were female. Brood fish were kept in the ratio of 2♂:1♀ for breeding purpose. Female brood fish were injected at the rate of 7, 5, 3 ml Ovatide/kg body weight while the males were injected with 3, 2.5 and 1.5 ml Ovatide/kg body weight respectively in T1, T2, and T3 at the same time. The brood fish were injected with single dose of Ovatide in all treatments. Ovulation rates were 0%, 100%, 63%; fertilization rates were 0%, 97%, and 90%, and hatching rates were 0%, 95% and 76% in treatments T1, T2, and T3 respectively. Fertilized eggs were incubated for 21-22 h in all the treatments. Higher ovulation rate (100 %), fertilization rate (97%), hatching rate (95%) and survival rate (85%) were found in treatment T2. Therefore, the optimum dose of Ovatide hormone for induced breeding of H. menoda is 2.5 and 5 ml Ovatide/kg body weight of male and female brood fish, respectively. Res. Agric., Livest. Fish.8(1): 171-179, April 2021
This paper investigates the obstacles to expanding and developing Bangladesh's agricultural machinery manufacturing and production industry. Due to its fertile soil and hospitable climate, Bangladesh is primarily an agricultural country where many crops are grown in large quantities. For food production to be secure and sustainable in the foreseeable future to meet future demand, mechanization is an indispensable factor. However, the agro machinery industry faces obstacles such as research facilities, financial support, qualified workers, technical support, double taxation, and storage facilities. Government policy can play a crucial role in fostering the growth and expansion of the agro-machinery industry and related communities. The article clearly describes how far away the agro machinery industry in Bangladesh is, discusses recent challenges, and encourages support for promoting mechanization throughout the country and strategies for overcoming future obstacles.
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