The present study was conducted based on field level survey data from farmers.
Selection of study area Keeping the objectives of research in mind, the present study was carried out at pre-selected areas of two districts in Bangladesh; Gazipur district: Naga, Vaoraid and Pirojali village, and Mymensingh district: Tarakanda bazaar in Fulpur Upazila, Choto bazaar, Boro bazaar, Pagla bazaar and Sutiakhali bazaar in Mymensingh Sadar Upazila. The study areas were selected considering the availability of different categories poultry farms, good transportation access, better cooperation from the owners of poultry farms, and no study of this nature was done previously in those areas.
Sampling technique and duration of data collection Random sampling technique was followed in selecting 63 producers and 63 consumers in Gazipur and Mymensingh districts, respectively. Data were collected through several visits for the period of July to December, 2009.
Preparation of the survey questionnaire Survey questionnaire was developed to determine the identification of farmers, number of Nana and nana chickens, live weight of Nana and nana chickens, egg production and egg weight of Nana and nana chickens, clutch size of Nana and nana chickens, hatchability of egg from Nana and nana chickens, preference of Nana and nana chicken by consumers, price of live Nana and nana chickens, problems in rearing of Nana and nana chickens and making future research plan to improve productivity of Nana and nana chickens reared under scavenging and semi-scavenging systems. The Nana chicken was considered instead of NaNa in this study because of its availability in rural areas.
Methods of data collection and processing of data The primary data were collected from selected poultry owners by conducting personal interviews. Before asking the individual questions, each owner of poultry farms was informed in brief, the aims and objectives of the study. The schedules were filled in from the replies given by owners. Some parameters like egg weight and body weight were recorded directly by the researchers. The collected data were edited and coded, then summarized and scrutinized carefully and thereafter, recorded in master sheets.
Analysis of data The collected data were analyzed using Genstat statistical computer package program (Genstat Discovery Edition 1, VSN international Limited, 5 Waterhouse, Waterhouse street, Hemel Hempstead, HP1 1ES, UK, 2003) through completely randomized design (CRD) to compare among genetic groups and sexes. Least significant difference (LSD) was calculated to isolate the significant differences.