The researches have had as the main object the studying of the productive
capacity of the sheep populations F1 obtained by crossing the local sheep
Tsigai with the Blackhead Teleorman rams brought from southern Romania. The
principal objectives of this research were the following: studying the
evolution dynamics of weight and the corporal development starting from birth
until the age used to mount, ability to secrete milk evaluation, assessment
of quantity and quality of wool. The researches have been made in a private
exploitation from the North-East part of Romania, and the conducted study
emphasize that if the birth body weight of the lots were analyzed at birth
there were close to the live weight at 28 days determined by the weight
differences that are favourable for the halfbreeds lots and are significant
for the statistical thresholds that are considered. At age of 16 months, when
females were used to mount the first time, the absolute difference between
the live weight of half-breeds and Tsigai breed was over 3 kg and was
significantly distinct statistically speaking from the limit of p< 0.01. The
production of milk control has been made during the first lactation following
that in the next period to continue this research. The first lactation had a
total duration of 225 days, and the total production of milk obtained from
half-breed females was higher by 13.68% compared to the performance achieved
by the sheep of the pure breed Tsigai, justifying this in terms of expanding
the type of matting. The researches have continued also with the evaluation
of wool production, and the obtained values show that are not significant
differences for the total amount of wool obtained from the first cut of.
Instead, when there were evaluated some characteristics of which the wool
quality depends (length, degree of flexuosity, fine, return to washing) was
found that at the Tsigai breed these had higher values, a consequence of the
genetic consolidation degree and of the good selection level for this race.