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Table 2 Summary of oestrous cycle lengths in weeks of female African elephants of the Lower Escarpment herd

From: Non-invasive assessment of the reproductive cycle in free-ranging female African elephants (Loxodonta africana) treated with a gonadotropin-releasing hormone (GnRH) vaccine for inducing anoestrus

 

Cycle Phasea

Cow No.

  

1b

2b

3b

4c

5b

7c

8b

9b

Pre-treatment

LP

4.43*

8.43

5.71*

     

ILP

9.57+

7.86+

7.14+

     

TC

14.00

16.29

12.86

     

Post-treatment

LP

9.00N

6.00

 

10.00

25.86+

15.86+

10.43N

16.86+

ILP

3.86N

8.86+

 

1.71*

  

5.29N

 

TC

12.86

14.86

 

11.71

25.86

15.86

15.71

16.86

LP

5.57*

8.71N

 

10.14

  

10.57

 

ILP

2.43*

6.00N

 

0.71*

  

2.14*

 

TC

8.00

14.71

 

10.86

  

12.71

 

LP

9.43N

  

12.14

    

ILP

3.71N

  

2.43*

    
 

TC

13.14

  

14.57

    
  1. aLP = Luteal phase; ILP = Inter-luteal phase; TC = Total cycle length.
  2. bGnRH treatment.
  3. cControl.
  4. * = short phase; + = long phase; N = normal cycle.
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Reproductive Biology and Endocrinology

ISSN: 1477-7827

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