Investigating the interactions between the source of grains and the ratio of forage to concentrate on blood parameters and reproductive performance in ewes that have oestrous syncronized

The aim of this study was to investigate the effect of grain source and different ratio of forage to concentrate on blood parameters and reproductive performance in Zandi ewes. Eighty ewes of Zandi ewes were divided in four different groups to synchronize estrus. Experimental treatments included: 1: high ratio of forage to concentrate (35: 65) with barley as a source of grain, 2: high ratio of forage to concentrate (35: 65) with corn as a source of grain, 3: low ratio of forage to concentrate ( 55: 45) with barley as a source of grain, 4: low ratio of forage to concentrate (55: 45) with corn as a source of grain. Estrus synchronization was performed in all treatments. After the cider removal, the ewes were estrus detection and mated with the rams in the herd. After lambing, the parameters were evaluated. The results showed that except the BUN and progesterone parameters, which showed a significant tendency, for liver enzymes, glucose and estrogen had no significant effect among treatments. The results of the present study showed that the high ratio of forage to concentrate combined with maize as a source of grain was better in reproductive traits than other experimental groups.