التفاصيل البيبلوغرافية
| العنوان: |
Individual and socially learned preferences for biserrula ( Biserrula pelecinus L.) in sheep |
| المؤلفون: |
Thomas, D. T., Milton, J. T. B., Revell, C. K., Ewing, M. A., Lindsay, D. R. |
| المساهمون: |
Grains Research and Development Corporation |
| المصدر: |
Grass and Forage Science ; volume 70, issue 2, page 374-380 ; ISSN 0142-5242 1365-2494 |
| بيانات النشر: |
Wiley |
| سنة النشر: |
2014 |
| المجموعة: |
Wiley Online Library (Open Access Articles via Crossref) |
| الوصف: |
This study examined how sheep develop a learned aversion to the annual legume biserrula ( Biserrula pelecinus L.). Merino sheep were grazed on paddocks sown with either (i) biserrula, (ii) biserrula + ryegrass ( Lolium rigidum Gaud.), (iii) crimson clover ( Trifolium incarnatum L.), (iv) crimson clover + ryegrass or (v) ryegrass, for 4 weeks. Relative preference (Chesson–Manly selection index) was determined by offering randomly ordered monoculture plots of the three forage species. The groups of sheep were then combined into a single group and grazed a paddock containing a monoculture sward of each plant type for 5 d. Relative preference of sheep was tested again after the completion of the combined grazing. The experiment was repeated at three stages of plant phenology: vegetative, reproductive and senesced. Relative preference for biserrula was lower in sheep that had grazed the paddock sown with only biserrula compared with sheep that grazed a combination of biserrula + ryegrass, at both the vegetative ( α ; −0·11 vs. 0·32) and reproductive ( α ; 0·18 vs. 0·63) stages. At each stage of phenology, when groups were combined and grazed together, preference for biserrula became uniform. This supported the hypothesis that sheep develop an aversion to biserrula when they graze a pasture containing biserrula. However, we concluded that the familiarity of sheep with biserrula did not result in low relative preference; rather, the aversion was more likely a response to the high proportion of this plant in their diet. Social facilitation may have enabled sheep to overcome rapidly the food aversion. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
English |
| DOI: |
10.1111/gfs.12108 |
| الإتاحة: |
https://doi.org/10.1111/gfs.12108Test |
| حقوق: |
http://onlinelibrary.wiley.com/termsAndConditions#vorTest |
| رقم الانضمام: |
edsbas.66B81519 |
| قاعدة البيانات: |
BASE |
