بررسی و تعیین سن مناسب جهت شروع پرواربندی بره های نر نژاد سنگسری

Tite: Astudy on selecting the most suitable age for Sangsaree Lambs fattening. This study isonthe basis of "completly randomized disign .method"in order to determine the most suitable age for sangsaree Lambs fattening. Lambs which were fattened are sangsaree breed and. during the study they fed a daily ration equal to the different ages. Ration allowed durling the first age to finish with Alfalfa and Concentrate (Barley 66%,cotton seed meal 12%, wheat bran 20%, salt 1% and supplement 1%) Atfirst the Lambs were devided into 4 groups.lnench group there were 12.male Lams with baby weight average 21/67 - 22/08 22/33 and 22/7 Kgs at 5 months old. The Lambs at the begining of fattening at the 5 months old ~ 7months old - 9months old and 11 months old. The body weight of those on The finishing period were averaged 36/6 41/8,51/03 and 52/23 kgs. The daily weight of the groups is 130,135 215 and 216grs. The coefficient changed 10/350; 8/750, 8/120 and 10/05.