COMPARATIVE STUDY ON SOME ACTIVITIES AND PRODUCTS BETWEEN HYBRIDS OF CARNIOLAN AND ITALIAN HONEYBEE | ||||
| Journal of Plant Protection and Pathology | ||||
| Article 4, Volume 33, Issue 12, November and December 2008, Page 8889-8898 PDF (537.9 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jppp.2008.218979 | ||||
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| Authors | ||||
| H. A. M. Mansour,; F. Sh. Serag El-Dien; A. M. Khater | ||||
| Plant Protection Research Institute, Agriculture Research Center, Egypt | ||||
| Abstract | ||||
| The present study was carried out at the apiary of Beekeeping Research Section at Sakha Agricultural Research Station, Kafr El-Sheikh Governorate, during 2005 and 2006 seasons. Sixty colonies were divided into three groups, twenty colonies each to compare among F1-F2 Italian and F1-F2 carniolan honey bees on brood rearing activity, propolis and pollen gathering, royal jelly secretion and honey yield production. The results indicated that the F1 Italian hybrid performed larger areas of sealed workers brood than did F1 Carniolan, F2 Italian and F2 Carniolan hybrid with averages of 1079.93, 792.76, 847.40 and 771.72 inch2/colony/month in the first year, and 929.08, 738.96, 794.95 and 756.79 inch2/colony/month, in the second one, respectively. In case of drone brood, F1 Carniolan hybrid (11.00 & 9.90 inch2/colony/month) was higher than F2 Carniolan (7.96 & 7.14), F2 Italian (7.05 & 6.17) and F1 Italian hybrid (6.86 & 5.11 inch2/colony/month) in the first and second year, respectively. Also, F2 Italian hybrid collected the largest amount of propolis (8.40 & 6.95 g/colony) compared with F2 Carniolan (7.77 & 5.99), F1 Italian (7.56 & 6.63) and F1 Carniolan (6.98 & 4.56 g/colony) in the first and second years. The largest amount of pollen was gathered during clover nectar flow followed by maize and broad bean for the four honeybee hybrids (F1-F2 Italian and F1-F2 Carniolan) in both seasons. Analysis of variance revealed highly significant difference in amount of gathering pollen between F1 Italian and other hybrids on broad bean, Egyptian clover and maize plants during the first and second seasons. F1 Carniolan hybrid secreted more natural royal jelly in the first and second seasons (17.40 & 18.50 g/colony) than F1 Italian (14.5l & 15.40), F2 Carniolan (13.00 & 14.20) and F2 Italian (12.60 & 13.60 g/colony), respectively. Also, F1 Carniolan honey bees gathered the largest amount of artificial royal jelly (106.00 & 115.60 g/colony) during the period from 15 April until 15 June compared with other honey bee hybrids; F1 Italian (97.25 & 100.40), F2 carniolan (93.40 & 100.00) and F2 Italian (92.40 & 99.40 g/colony) in two tested seasons, respectively. Data revealed that F1 Carniolan produced the highest honey yield (6.55 & 6.95 kg/colony) followed by F2 carniolan (5.75 & 7.85), F1 Italian (5.51 & 5.70) and F2 Italian (4.55 & 4.95 kg/colony) at the end of clover blooming season, respectively. Also, at the end of cotton blooming season, the honey yield of F1 Carniolan hybrid (8.50 & 8.53 kg/colony) was more than other honey bee hybrids during 2005 and 2006 seasons. From the current results, it could be concluded that the F1 Italian honeybee performed larger areas of worker brood and greater amounts of propolis and pollen than F1 Carniolan, F2 Italian and F2 Carniolan honeybee. By contrast, the F1 Carniolan achieved larger areas of drone brood and produced greater amounts of royal jelly and clover and cotton honey yield than other honey bees hybrids. | ||||
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