Table 2 Criteria for categorization of reproductive stage of harvested female moose from southern Sweden

1

Pre-pubertal heifer: small uterus and ovaries, no corpus luteum, i.e. no sign of previous ovulation.

2

Heifer, pubertal, in first oestrus: large mature follicle (>10 mm), close to ovulation, or recently ovulated (corpus luteum <10 mm, passed puberty).

3

Heifer, pubertal, passed first oestrus: corpus luteum ≥10 mm (in first dioestrus*).

4

Heifer, pregnant (>2 weeks): presence of embryo or fetus.

5

Cow, in oestrus or recently passed first oestrus of the season: presence of mature follicle (>10 mm) or newly developed corpus luteum (<10 mm).

6

Cow, passed first oestrus of season: large corpus luteum (≥10 mm).

7

Cow, pregnant (>2 weeks): presence of embryo or fetus.

8

Cow, returned to oestrus: Presence of regressed corpus luteum, together with a mature follicle (>10 mm), or a new corpus luteum.

9

Cow in anoestrus: no signs of large mature follicles (>10 mm) or ovulation (no fresh corpus luteum) during the present season.