Group-I birds were reared in free-range and group-II birds in confinement rearing systems.
Commercial poultry feed and ad libitum water supply was provided to the birds in confinements and free-range rearing systems.
Behavioral observations for the birds kept under confinement and free-range rearing systems were monitored and compared.
Similarly, in free-range rearing system these birds spent maximum time in litter pecking during 1st (14.89%), 2nd (18.17%) and 4th (21.49%) month, respectively however, these birds spent maximum time in lying during 3rd (18.25%), 5th (20.39%) and 6th (19.94%) month of age (Table II).
Table II.-Comparative month vise behavioral time-budget for turkeys in confinement and free range rearing systems.
 studied the effect of rearing system on meat quality attributes in chicken and found lower abdominal fat contents in free range rearing system compared with the intensive rearing system.
But very little amount literature is present on the associated effects of free range rearing system on the performance and carcass yield of chicken.
drowning in water troughs are associated risks in the free-range rearing of birds.
Additionally higher rate of cannibalism and feather pecking was observed in free rang rearing system  especially in larger flocks where only a small percentage of birds go outside.
It was observed that birds perform well in environmentally control houses as compare to the free range rearing system where they are experience a varying temperature greater exercises which not only increase their nutritional requirements but also affect the feed conversion ratio (FCR).
Rearing silkworm is traditional and an important sub-branch of agriculture, which has 1500-years old history in Anatolia and is usually done on a small scale and does not require much investment (Taskaya, 2011).
In Mediterranean countries summer temperatures are quite high and unsuitable for silkworm rearing Therefore, in Turkey, silkworms are reared twice a year, one of which is spring rearing (April, May and June) and the other is autumn rearing (August and September).
Humidity plays a vital role in silkworm rearing and its role is both direct and indirect.
Since silkworms cannot adjust their body temperature according to surrounding temperature, the rearing room needs to be heated during the first days of feeding using the stove or electric heaters (Gulseren and Sipahioglu, 1992).
The aim of this study was therefore, to calculate the amount of the heat needed by the silkworm during the three different rearing periods, and to determine optimum economical rearing period.