Effect of Dietary Iodine Supplementation on Productive Performance of Pekin and Domyati Ducks during Growth Period

Abstract

A total number of Two hundred and forty , day old unsexed Pekin and Domyati ducklings (120/each breeds) at one-day old were used in the present study. The experimental period extended for 12 weeks of age. Experimental ducks were randomly divided into four equal treatments (30 Pekin or Domyati ducks each) in three equal replicates (10 ducks each). Ducks were fed diets containing Potassium iodide at levels of 0, 1, 1.5 and 2 mg iodine/kg ration for T1, T2, T3 and T4, respectively. The results showed that growing ducklings fed ration supplemented with Potassium iodide (2, 1.5 and1%) were significantly increased live body weight, body weight gain, feed intake, feed conversion ratio, shank and keel length and body circumference. Relative weight of carcass, and lymphoid organs were significantly increased with iodine. Moreover, blood hemoglobin, red and white blood cells counts and lymphocytes cells% were significantly increased by iodine supplementation to diets. On the other hand, heterophils (%) and H/L ratio were significantly lower by different levels of Potassium iodide supplementation. As well as, plasma total protein, albumin, globulin, A/G ratio, calcium, phosphorus and T 3 were significantly higher in treated than the control groups. Conversely, duckling fed ration supplemented with Potassium iodide recorded a significant decrease in plasma total lipids, cholesterol, triglyceride, AST and ALT concentrations .Conclusively, potassium iodide at 2mg/kg diet level resulted in better performance without any adverse effect on physiological responses and carcass quality traits .

Effect of in-Ovo-Injection of Potassium Iodide on Thyroid Activity and Some Hematological and Biochemical Indices of Broiler Chicks

“…These results may be due to the effect of KI on thyroid gland activity and the increase in thyroxine effects. Moreover, our results agree with Ali et al, (2017) who reported that the Hb and PCV% increase by adding iodine to the ration.…”

“…Data of Table 3 showed a significant elevation in the lymphocyte %, and on the contrary, the heterophils % and H/L ratio significantly decreased with KI injection. These results corresponded with the findings of Ali et al, (2017), and with the findings of Abaza et al, (2003) who record a positive correlation between thyroxine levels and lymphocytes%.…”

“…There was no significant difference in the level of total protein, albumin, globulin and albumin/globulin in the serum of hatched chicks of all study's groups (Table 4), and this is inconsistent with El-Bahr et al, (2017) and Ali et al, (2017) who mentioned that the addition of iodine had no significant effect on blood proteins levels, on the other hand, our results did not agree with Hassaan et al, (2015) possibly due to the difference in birds age when given iodine.…”

Effect of L-Carnitine and Yeast Chromium Supplementation on Productive Performance in Pekin and Sudani Duckling during Growth Period

“…Also, Awad et al (2016) reported that the improvement of eviscerated carcass and edible parts reached from 3.54 to 4.57% and 3.94 to 4.47%, respectively, for Domyati ducklings fed the diet supplemented with different LC levels (150, 300, 450 and 600 mg/kg diet) as compared to control, while the abdominal fat percentage was decreased by 36.14 to 45.18%. Ali et al (2017) confirmed that carcass and total edible parts percentages were significantly increased due to duckling breed by 3.35 and 4.00% for Pekin ducklings than Domyati, respectively. El-Kelawy (2019) reported that Cr supplementation improved the percentage of carcass weight and decreased abdominal fat at 49 days of the age of Japanese quails compared with control groups.…”

“…These results agreed with Ali (2005) who indicated that the mortality percentage was 4% for Domyati during the periods (0-12) weeks of age. Also, Ali et al (2017) reported that the mortality rate during 12 weeks of age was significantly higher in Pekin (4.79%) than Domyati (3.07%). Duckling dietary supplemented with different LC and Cr levels significantly recorded a reduction in mortality rate than those fed on control ration from 4.07 to 3.93%.…”