Author, Donkey, Bureaucrats, Administrators
53,803
edits
Changes
Jump to navigation
Jump to search
Female Seasonality - Donkey (view source)
Revision as of 09:55, 25 October 2010
, 09:55, 25 October 2010no edit summary
<u>Ovarian activity in the jenny starts between 8 and 24 months of age</u>. This great variability can be explained by factors such as breed, nutrition, health, temperature and photoperiod. Seasonality of ovarian activity is variable and is likely to be influenced by photoperiod as well as nutrition and temperature. Scientific studies regarding seasonality present some discrepancy.
<u>Ovarian activity in the jenny starts between 8 and 24 months of age</u>. This great variability can be explained by factors such as breed, nutrition, health, temperature and photoperiod. Seasonality of ovarian activity is variable and is likely to be influenced by photoperiod as well as nutrition and temperature. Scientific studies regarding seasonality present some discrepancy.
A marked seasonality in which 54% of the females present an anoestrus has been reported in Brazil (latitude 19°51' 06"S). Anoestrus season lasts 166.3 ± 63.2 days (Henry ''et al'' ,1987). Seasonality has also been described in Mexico (Orozco Hernandez ''et al'', 1992). In Morocco, our field observations show that the peak birthing season is March through May with some sporadic births occurring in February and from June until September. Studies in Ethiopia show that the rainy season (''i.e.'' increased
A marked seasonality in which 54% of the females present an anoestrus has been reported in Brazil (latitude 19°51' 06"S). Anoestrus season lasts 166.3 ± 63.2 days (Henry ''et al'' ,1987). Seasonality has also been described in Mexico (Orozco Hernandez ''et al'', 1992). In Morocco, our field observations show that the peak birthing season is March through May with some sporadic births occurring in February and from June until September. Studies in Ethiopia show that the rainy season (''i.e.'' increased
food availability) is associated with higher sexual activity, follicular growth and incidence of ovulation in free-ranging tropical jennies (Lemma ''et al'', 2006a). Ovarian activity in these jennies is highly correlated with body condition (Lemma ''et al'', 2006b).
food availability) is associated with higher sexual activity, follicular growth and incidence of ovulation in free-ranging tropical jennies (Lemma ''et al'', 2006a). Ovarian activity in these jennies is highly correlated with body condition (Lemma ''et al'', 2006b).
==Literature Search==
[[File:CABI logo.jpg|left|90px]]
Use these links to find recent scientific publications via CAB Abstracts (log in required unless accessing from a subscribing organisation).
<br><br><br>
[http://www.cabdirect.org/search.html?q=%28%28%28%28title%3A%28season*%29%29%29+AND+%28%28subject%3A%28reproduction%29+AND+%28%28title%3A%28donkey%29+OR+ab%3A%28donkey%29+OR+od%3A%28donkeys%29%29%29%29%29%29%29+OR+%28%28%28%28%28title%3A%28Oestrus+cycle%29+OR+title%3A%28ovarian+activity%29+OR+title%3A%28estrus+cycle%29%29+AND+%28%28title%3A%28donkey%29+OR+ab%3A%28donkey%29+OR+od%3A%28donkeys%29%29%29%29%29+%29%29+NOT+od%3A%28cats%29 Donkey Seasonality related publications]
==References==
==References==
|pagetype = Donkey
|pagetype = Donkey
}}
}}
{{infotable
|Maintitle = [[Sponsors#The Donkey Sanctuary|This page was sponsored and content provided by '''THE DONKEY SANCTUARY''']]
|Maintitlebackcolour = B4CDCD
}}
[[Category:Donkey]]
[[Category:Donkey]]
'''Bold text'''[[Category:Reproduction_-_Donkey]]