Effect of supplemental Biotronic SE to the rations containend barley on performance of layer chicks during growing phase

Abstract

The study was conducted on AL- Thirthar farms in order to study the effect of addition of Biotronic SE (organic acids and organic salts) to the diet on performance of laying chicks (ISA Brown), that contains different levels of barley from one day old to 20 weeks of age.Four hundred and five chicks were used in this experiments. Chicks were divided into 9 treatments, each treatment with three replication (15 bird/ replicate). The Biotronic SE was added in a quantity of 0, 1, 2 kg/ton diet, with factorial arrangement of three levels of barley 12, 22 and 32 % of diet. The result showed a significant decrease (P<0.01) in the body weight at 3, 10 and 20 weeks of age with 32% barley in the diet and at age 10 and 20 weeks with 22% barley in diet, and a significant decrease (P<0.01) in feed intake with increasing levels of barley up to 12% in the diet at period 0 – 3 weeks of age .Also it has been observed that there was a significant increase (P<0.01) in quantity of feed intake at period 4 – 10, 11 – 17 and 18 -20 weeks of age with 22, 32% of barely in diet and a significant decrease (P<0.01) in the feed conversion ratio at period 0 – 3 weeks of age with level 22% of barley in the diet and at period 18-20 weeks of age with 22 and 32% of barley in the diet .It has been observed that addition of Biotronic SE in the diet at 2 kg/ton increase significantly (P<0.01) in body weight of birds at all ages with increase (P<0.01) in feed intake at period 0-3 weeks of age and at period 4–10 weeks of age, with improvement (P<0.01) in feed conversion ratio at period 0–3 and 18 – 20 weeks f age.The relationships between the barley and the additive feed, was the increase significantly (P<0.01) in body weight at all of age to the treatments adding to it Biotronic SE in 2 kg/ton with 12 and 32% of barely feed in the diet at all ages and with level 22% of barley in the diet at 3 and 20 weeks of age.Also a significant (P<0.01) increase in feed intake for the treatments containing 22% barley with the diet having Biotronic SE in a rate of 2 kg/ton at periods 0-3, 4-10 and 11-17 weeks and the treatment with level 32% barley with Biotronic SE in a rate of 2 kg/ ton at period 4-10 weeks of age and significant(P<0.01) in feed conversion ratio at period 0- 3 and 18-20 weeks for the treatments containing different levels of barley with Biotronic SE in a rate of 2kg/ ton. It was concluded from this study that the capability of the use of barley levels with greater than 12% in diet was increase significantly (P<0.01) in feed intake and a significant decreasing (P<0.01) in feed conversion ratio and body weight of bird. It has been observed that addition of Biotronic SE in a rate of 2kg/ton of feed increase significantly (P<0.01) in body weight with different levels of barley in diet and feed intake with level 22% of barley in diet and improvement in feed conversion ratio at periods 0-3 and 18-20 weeks of age with different levels of barley .No significant differences in mortality percentage between different treatments.