TABLE 1.

Number of animals sampled according to species and sex, showing age at sampling according to sex, and reproductive stage for females.

Species	Breed	Female	Age (days)	Stage	Male	Age (days)	Castrated male	Age
Bos taurus	Holstein	2	1250, 1532	Lactating	2	539, 602	–	–
Bos taurus	Hereford (Line 1)	2	420	Post-ovulatory	2	420	–
Capra hircus	Alpine	2	1697, 2072	Pregnant and lactating	2	Days 49 to 246	–
Sus scrofa	Large White	2	592, 595	lactating	2	Days 25 to 255
Sus scrofa	Yorkshire						2	170
Gallus gallus	White Leghorn	2	387	Laying	2	387
Gallus gallus	White Leghorn F1 crossbred (Lines 6x7)	2	140	Sexually mature but not yet in lay	2	140