| Effect of nutrition on plasma progesterone levels, metabolic parameters and small follicles development in unstimulated goats reared under constant photoperiod regimen. | |
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MedLine Citation:
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PMID: 16324082 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Sixteen local adult goats were submitted for 9 weeks to 2.09 (high group) and 0.54 (low group) x dietary maintenance respectively. During the experimental period, goats were weighed, oestrus was detected and plasma insulin, urea, non-esterified fatty acids and progesterone concentrations were assessed. At the end of the experiment, ovarian small follicles population was studied by histological analysis. Final weight loss in low group was 18.37 +/- 2.02%, whereas weight gain of high group was 13.84 +/- 2.70%. Insulin and urea were lower in low group, while non-esterified fatty acids were significantly higher. A lower number of fasted goats was in oestrus or ovulated and an extended length of oestrus (p < 0.05) and a higher frequency of short or long cycles (p < 0.05) were also observed. Fed animals showed heavier ovaries (p < 0.01) and a lower number of primordial follicles (p < 0.05). In restricted goats a significant qualitative alteration of follicle classes involved in the initiation process of primordial pool was found. In this phase, granulosa thickness and oocyte size were the most affected (p < 0.01). However in small follicles beyond the primary stage no differences were found between the groups in either number or qualitative characteristics (p > 0.05). Collectively, these results indicate that opposite dietary intakes for a medium period induce a composite reproductive response in goats and can regulate the early onset of follicle growth. |
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Authors:
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D Rondina; V J F Freitas; M Spinaci; G Galeati |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Reproduction in domestic animals = Zuchthygiene Volume: 40 ISSN: 0936-6768 ISO Abbreviation: Reprod. Domest. Anim. Publication Date: 2005 Dec |
Date Detail:
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Created Date: 2005-12-05 Completed Date: 2006-03-13 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 9015668 Medline TA: Reprod Domest Anim Country: Germany |
Other Details:
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Languages: eng Pagination: 548-52 Citation Subset: IM |
Affiliation:
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Faculdade de Veterin?ria, Universidade Estadual do Cear?, Av. Paranjana 1700, Campus do Itaperi, CEP 60740-000 Fortaleza, Cear?, Brazil. davide@uece.br |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animal Nutritional Physiological Phenomena* Animals Body Weight / physiology Estrus / physiology Fatty Acids, Nonesterified / blood Female Goats / blood, metabolism, physiology* Insulin / blood Ovarian Follicle / anatomy & histology, growth & development, pathology, physiology* Ovulation Photoperiod* Progesterone / blood* Urea / blood Weight Loss / physiology |
| Chemical | |
Reg. No./Substance:
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0/Fatty Acids, Nonesterified; 11061-68-0/Insulin; 57-13-6/Urea; 57-83-0/Progesterone |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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