Comparing two different superovulation protocols on ovarian activity and fecal glucocorticoid levels in the brown brocket deer (Mazama gouazoubira)

Table 1 Mean (±SEM) time to estrus and superovulatory response in six hinds of the species Mazama gouazoubira submitted to two different hormonal treatments

	Treatments		P value
	eCG	FSH
Number of hinds treated per treatment	6	6
Hinds exhibiting estrus behavior	3/6	3/6	NS
Period between removal of the progesterone device and the onset of estrus (h) (range)	40.0 ± 8.0 (24–48)	92.0 ± 22.0 (48–120)	NS
Duration of estrus (h) (range)	40.0 ± 4.0 (36–48)	36.0 ± 6.9 (24–48)	NS
Synchrony ^a (h)	24	72
Superovulating hinds	4/6	4/6	NS
No. of corpora lutea (range)	7.0 ± 1.8a* (2–10)	2.6 ± 0.8b* (1–6)	0.04
No. of corpora lutea in the right ovary (range)	4.2 ± 1.2* (1–7)	1.0 ± 0.3* (0–2)	NS
No. of corpora lutea in the left ovary (range)	2.7 ± 0.8* (0–5)	1.6 ± 0.8* (0–2)	NS
No. of anovulatory follicles (range)	4.5 ± 1.7* (0–7)	7.6 ± 0.9* (6–11)	NS
Total follicular stimulus ^b (range)	11.5 ± 2.5* (6–17)	10.2 ± 1.1* (7–13)	NS
Hinds with early regression of corpora lutea	4/6	2/6	NS

eCG Treatment, CIDR^® for 8 days + BE D0 + 700UI eCG D4 + cloprostenol D8; and FSH Treatment, CIDR^® for 7.5 days + BE D0 + 130 mg FSH D4.5/D8 + cloprostenol D7.5.
^aPeriod between the first and last hind to exhibit estrus behavior under each treatment.
^bSum of the number of corpora lutea and the number of anovulatory follicles.
*Mean ± SEM, excluding data from hinds 3 and 5 in eCG Treatment and hind 3 in FSH Treatment due to repetition of estrus behavior prior to laparoscopic examination.
NS: P ≥ 0:05; Values with different letters (a and b) along the lines differ (P < 0:05) according to the Student t test.

ISSN: 1477-7827