Effects of natural building ventilation on live weights performance of does during reproduction

Four identical adjoining buildings, each with eight pens (number of does = 32) of dimensions 1.2 * 0.6 * 1.2 m were constructed with floor area per pen (1.2 * 0.6 m). Three factors were considered in the study; building orientations (Or.45° and Or.90° to wind directions) and ventilation openings (Op.20, Op.40, Op.60 and Op.80% side openings) and seasons (dry and rainy). Ventilation rates inside each pen were estimated using opening effectiveness and magnitudes of prevailing winds' speed measured. Rabbits were mated to produce litters at two consecutively times per season.