Yaseen AL Mohsen and Abdel Naser AL Omar 

1 Animal department- faculty of veterinary medicine. University of Hama, Syria.
2 Scientific Agricultural Research Center in Hama, General Commission for Scientific Agricultural Research (GCSAR) Damascus, Syria.

(*Corresponding author: Dr. Yaseen Al Mohsen. E.mail: yaseen.m@hama-univ.edu.sy  ).

Received: 13/ 07/ 2024      Accepted: 8/ 10/ 2024

Abstract 

The research was conducted on 20 heads of Awassi lambs located in the sheep station at the Agricultural Research Center in Hama, ranging in age from 6-7 months and weighting 40 kg on average. and in order to evaluate some of the properties of rumen liquid when the experimental lambs. all laboratory tests were conducted in the laboratories of the Agricultural Scientific Research Center in Hama when adding different percentages of coriander hay to their dietary diet. The lambs were offered a standardized concentrated diet. As for the filler feed, its percentage of components varied according to the study group. which was divided into four groups, each group consists of five lamps: The first group (the witness) was fed on filler feed, which is wheat hay only (100%), the second was fed (coriander hay 25% + wheat hay 75%), the third was fed (coriander hay 50% + wheat hay 50%), and the fourth was fed (coriander hay 75% + wheat hay 25%). Rumen fluid samples were collected from the experimental lambs one month, two months and three months after the start of the experiment and physical evaluation tests (color-smell-viscosity-sedimentation time) and chemical evaluation (PH- blue methylene return time- microscopic examination of the bacterial flora by qualitative and quantitative methods) were performed. Showed the results the acidity values in the groups with coriander hay added by 75% ranged between (7.1-7.8), while they were (6.8-6.4) in the rest of the groups and the control during the same period. No sensory change in color and smell of rumen fluid was observed in all groups, including the control, and after three months the viscosity was dense and severe (++++) for all groups of lambs of the experiment and the control, while a slight viscosity (+) was observed for the control group and a medium viscosity (++) for the rest of the groups after one and two months from the start of the experiment. The test showed the sedimentation and buoyancy time (SAT) and the return time of methylene blue in all groups. It concludes the need to conduct an analysis of rumen fluid, which gives an important diagnostic value and the possibility of using and adding coriander hay as an unconventional filler feed up to 25% to the nutritional diet of Awassi lambs as they did not affect the kinetics and activity of the protozoan averages and physical, chemical and sensory tests remained within the normal limits in the rumen fluid.
Keywords: Evaluation, Rumen liquid, Awassi lambs, Coriander Hay.

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