Effect of Different Commercial Garlic Preparations Added to Drinking Water on Physiological and Immunological Traits of Broiler Chickens (Ross 308)

• Marwan S.K. ALNasriri1*, Maad A.K. Albaddy2

  Author

The experiment was conducted in the broiler hall of the Animal Production Department at the College of Agriculture / Tikrit University for the period from 17/2/2025 to 24/3/2025 to study the effect of using different types of commercial garlic in drinking water and its impact on some productive traits of broiler chickens. A total of 225 one-day-old Ross 308 broiler chicks were used, placed in floor pens, and divided into five treatments. Each treatment contained three replicates, and within each replicate, there were fifteen birds. The first treatment was the control group. The birds were fed a ready-made starter diet from the Middle East factory until 10 days of age. Subsequently, experimental diets mixed in the feed mill of the College of Agriculture / Tikrit University were used. A grower diet was used from 10 to 24 days of age, and then the diet was switched to a finisher diet, fed from 25 to 35 days of age. Feeding was ad libitum. The experimental materials were added to the drinking water starting from 10 days to 35 days of age. The additions were 500 ml/1000 liters for T2, 350 ml/1000 liters for  T3, 200 ml/1000 liters for T4, and 200 g/1000 liters for T5, according to the recommendations of the manufacturing companies, using plastic manual feeders and drinkers.

The results of the statistical analysis showed no significant differences in blood serum proteins (albumin, globulin, and total protein). The experiment showed a significant superiority in the third treatment regarding humoral immunity (IgM) compared to the control treatment, as it gave the highest value compared to the rest of the addition treatments, recording 17.426. As for the lymphoid organs, the experiment recorded no significant differences in the relative weight of the spleen, Thymus gland

) Compared to the control treatment, while the third treatment recorded a significant decrease compared to the control group regarding the relative weight of the bursa of Fabricius. As for the blood picture indicators, no significant differences were observed in the white blood cell counts between the addition treatments and the control treatment, while a decrease was observed in the third treatment regarding heterophils compared to the control treatment, a significant increase in the third treatment in the percentage of lymphocytes compared to the control, and a significant decrease in the H/L% (oxidative stress indicator) for the third treatment compared to the control.

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