اثر فرآوري علوفه خلر (Lathyrus sativus) بر قابليت هضم، فراسنجه هاي تخميري شكمبه و متابوليت هاي پلاسماي خون گوسفند

Effect of treatment of grass pea (Lathyrus sativus) on digestibility, rumen Parameters and blood Plasma metabolites of sheep

Polyethylene glycol (PEG) (6000 MW) and water soaking treatment were used for treating of anti-nutritional factors (ANFs) (3-N-oxalyl-L2, 3-diamino propionic acid (ODAP) and condensed tannin (CT)) in grass Pea. Three Varamini rams were used to investigate the effects of these treatments on blood plasma metabolites, rumen parameters and digestibility of treated and untreated grass pea. Result showed that ODAP and CT concentration of grass pea were 1.18% and 0.02% in DM, respectively. Water soaking and polyethylene glycol treatments have reduced ODAP (80.48% and 19.05%) and CT concentration (70.18%and 24.17%) of grass pea, respectively. These treatments could not significantly improve nutrient digestibility of grass pea. There was significant and negative correlation between CT and crude protein digestibility. Using treatment on grass pea could significantly increase total volatile fatty acids concentration only 8 h after feeding. Treating of grass pea could significantly improve the ammonia nitrogen of rumen sample 4 h after feeding. According to the results, water soaking treatment is recommended for improvement of grass pea nutritive value in farm conditions; refer to reduction of ANFs, increase of available nitrogen and metabolizable energy.