Abstract
In order to have valuable lambs, it is necessary to know all the reproduction indices, especially in the imminent case of an efficiency of the farm given by the increase of the positive results (prolificity, birth rate, etc.) and the decrease of the negative results of the reproduction characters (mortality, percentage of returns, abortions etc).
In this paper we analyzed the following characteristics: weight of lambs at calving, average daily gain, yield at calving, age at first calf, age at first calving, gestation duration, prolificity and number of products obtained from twin calves during 2017 - 2019.
Regarding the weight of the lambs at calving, the highest average value was obtained for females obtained from calves, namely 5.17 ± 0.08 Kg. The values obtained for the average daily spray showed a mean of 0.250 ± 0.01 kg for males and 0.230 ± 0.01 Kg for females.
Regarding the age recorded at the first mount, the average obtained was 569.94 ± 0.63 days and the age at first calving recorded an average value of 725.04 ± 0.77 days.
The data collected are for monitoring the performance of the products but also of the males and adult females within the farm.