The study of limited quantity and duration of the fattening effects of food on blood factors Afshari breed fattening lambs

To evaluate the effect of feed quality limits during the fattening period on the blood factors of male Afshari breed lambs in this study, twenty one three month old lambs were randomly divided into three groups, all of which were prepared for testing within two weeks of preparation and administration of enterotoxaemia vaccines and anti parasite medication.
The first group was fed by fattening rations as the control one since the first day of testing. The second group was fed for thirty days and the third group for fifty days of testing by straw and hay and then by fattening ration.
Weighing was performed every other week. Blood samples were taken from each group on days thirty, forty-five, ninety and one hundred and twenty to verify NEFA, BHBA and BUN samples.
The results of this experiment show that by the end of the period a statistically significant difference (P>0.5) of blood parameters NEFA, BHBA and BUN was not observed.
As for the daily gain and final weight, though the weight gain was observed as different during the period, the end of period weight of the grooms had no significant difference. Thus, through a fifty day limitation resulting in less feed consumption and low quality of the feed during the limited days, the group had a higher economic performance.