التفاصيل البيبلوغرافية
| العنوان: |
Cattle breed-variation in infestation by the horn fly Haematobia irritans. |
| المؤلفون: |
Guglielmone, A. A., Curto, E., Anziani, O. S., Mangold, A. J. |
| المصدر: |
Medical & Veterinary Entomology; Sep2000, Vol. 14 Issue 3, p272-276, 5p, 3 Charts, 2 Graphs |
| مصطلحات موضوعية: |
HORN fly, CATTLE |
| مصطلحات جغرافية: |
ARGENTINA |
| مستخلص: |
SummaryA study was carried out to assess the resistance of pure and cross-bred groups of cattle to the horn fly Haematobia irritans (Linnaeus) (Diptera: Muscidae) in northern Argentina. Pure-bred cattle were Criolla, Iberian Bos taurus Linnaeus (Artiodactyla: Bovidae) and Nellore, Bos indicus Linnaeus (Artiodactyla: Bovidae). Cross-bred cattle were Hereford, British B. taurus (34%) × Nellore (66%) and Hereford (66%) × Nellore (34%). All were heifers and animals were maintained in two groups, each containing a mixture of pure and cross-breeds. The lowest fly numbers were found on Criolla heifers and the highest on Hereford × Nellore cross-breeds. However, it could not be determined from this study whether this was a consequence of breed and/or size, as Criolla heifers were lighter than the corresponding Hereford × Nellore heifers. Fly numbers on the heifers followed an approximately negative binomial distribution. However, the ranking of individual animals in their level of infestation within subgroups was not consistent. Hence, culling the most infested heifers on any given date would at best give only a small improvement in H. irritans control. [ABSTRACT FROM AUTHOR] |
|
Copyright of Medical & Veterinary Entomology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
Full Text Finder