Table 1.

Percentage of females showing ovulation or oestrus, BW and body condition, at those moments, intervals from male introduction to ovulation or oestrus, ovulation rate of the first oestrous, fecundity, fertility, prolificacy and productivity, in 7- and 10-month-old does exposed to photostimulated bucks (PHOTO) and to unstimulated bucks (CONTROL)

	7-month-old does (n=19)		10-month-old does (n=22)		Statistical significance
	CONTROL (10)	PHOTO (9)	CONTROL (11)	PHOTO (11)	Doe age	Buck photoperiod treatment
Females showing ovulation or oestrous (%)	20	67	64	100	*	*
BW at ovulation (kg)	26.5±0.0	26.3±1.2	29.8±0.8	29.2±0.4	*	NS
Body condition score at ovulation	2.88±0.13	3.00±0.00	3.14±0.05	2.95±0.03	NS	*
Interval ‘introduction-ovulation’ (days)	15.0±0.0	16.5±0.7	14.3±1.1	14.6±0.8	NS	NS
BW at oestrous (kg)	25.0±0.0	26.0±1.3	30.1±1.0	29.0±0.4	*	NS
Body condition score at oestrous	3.00±0.00	3.00±0.00	3.14±0.05	3.00±0.03	NS	*
Interval ‘introduction-oestrous’ (days)	10.0±0.0	12.5±1.1	10.4±1.1	10.4±0.8	NS	NS
Ovulation rate	1.00±0.00	1.00±0.00	1.43±0.20	1.27±0.14	NS	NS
Fecundity (%)	100	100	100	82	NS	NS
Fertility (%)	20	67	64	82	*	*
Prolificacy	1.00±0.00	1.17±0.17	1.43±0.20	1.56±0.18	NS	NS
Productivity	0.20±0.13	0.78±0.17	0.91±0.10	1.27±0.15	*	*

Fecundity=percentage of pregnant female goats/female goats mounted by the males, determined via transrectal ultrasonography on day 45 after mounting.

Fertility=percentage of female goats kidding per female goat serviced.

Prolificacy=number of kids born per female goat kidding.

Productivity=number of kids born per female goat serviced.

*P<0.05.

The interaction doe age × buck photoperiod treatment had no significant (NS) effect on any variable (P>0.05).