Publications

Titles

English :

Rabbit productivity and reproductivity as affected by iodine in drinking water or and in inhaled air

Arabic :

تأثير اضافة اليود الى مياة الشرب او / و رشة في الهواء المستنشق على معدلات اداء الارانب الانتاجية و التناسلية

Abstract

A total number of five hundred forty-four Filander rabbits was used in the present study to determine the effects of iodine in drinking water or and in inhaled air on their productive and reproductive capabilities. The present study included two experiments, the first one lasted 40 days and was carried out during growing period (from weaning at 30 days to marketing age at 70 days) using 312 rabbits. The second lasted 4 months and was carried out on 196 multiparous does and 36 sexual mature bucks of Filander rabbits aged thirteen months. All animals were divided into four comparable groups (78 growing rabbits, 9 bucks and 49 does in each group). The first group was kept untreated (as a control group), while the other three groups (treated groups) were treated with 0.1 ml iodine/ 1 litter drinking water; spraying tap water contained 2 ml iodine/ I liter; and treated with iodine in drinking water combined with iodine in inhaled air at the same levels mentioned in groups 2 and 3, respectively, twice a week during the experimental period. One liter diluted iodine was sufficient for about 50 mature or 150 growing rabbits) The results revealed that, daily body weight gain; feed efficiency and final body weight of growing rabbits were significantly (P<0.05), higher and in descending order due to treatment with iodine in drinking water and in inhaled air; iodine in drinking water then iodine in inhaled air, respectively compared to control ones. Regarding histopathology, the microscopically examination of liver revealed an increase in mitotic activity of the hepatocytes indicating improvement of liver cells activity due to iodine treatment. The thyroid glands of treated rabbits were contained more active thyroid follicles with high density thyroglobin compared with untreated rabbits. There was normal structure with increased cystic dilatation of renal tubules in kidney due to iodine treatment. The treatment also increased significantly (P<0.05) dressing percentage, carcass weight, internal organs weight, blood picture and some blood serum constitute of growing rabbits. Adding and spraying iodine to rabbit bucks in drinking water and in inhaled air, respectively, significantly (P<0.05) improved their reproductive capabilities. Rabbit does treated with iodine in drinking water or/ and in inhaled air recorded better kindling rate, litter size and weight at birth; milk yield and pre-and post-weaning mortality rate (P<0.05) than those untreated does. It can be concluded that supplementation or/ and spraying of iodine to rabbit drinking water and inhaled air, respectively, showed a great role in enhancing the immune system, growth performance, blood metabolites and reproductive performance. From the economic point treated with iodine in drinking water combined with in inhaled air is recommended for both growing and mature (bucks + does) rabbits. Key words: iodine; rabbit; histopathology; productive; reproductive.

Publication year

2009

Pages

719-757

Availability location

معهد بحوث اللانتاج الحيوانى-شارع نادى الصيد- الدقى- الجيزة

Availability number

Organization Name

Animal Production Research Institute (APRI)

serial title

Journal Biological Chemistry Environmental Sciences

Author(s) from ARC