MISCELLANY

MISCELLANY GESTATION AND MATING TABLES

PROPER AGE OR WEIGHT PERIOD OF NUMBER OF FEMALES PERIOD OF GESTATION (DAYS) FOR FIRST MATING FERTILITY (YRS.) FOR ONE MALE AVERAGE RANGE
CATTLE: Cow Bull	15–18 mos.1	10–14		283	279–2902262–3003
	1 yr., well matured	10–12	504 / thousands5
GOAT: Doe Buck	10 mos. or 85–90 lbs.	6		150	145–155
	well matured	5	30
HORSE: Mare Stallion	3 yrs.	10–12		336	310–370
	3 yrs.	12–15	40–454 / record 2525
PIG: Sow Boar	5–6 mos. or 250 lbs.	6		115	110–120
	250–300 lbs.	6	506 / 35–407
RABBIT: Doe Buck	6 mos.	5–6		31	30–32
	6 mos.	5–6	30
SHEEP: Ewe Ram	1 yr. or 90 lbs.	6		147 / 1518	142–154
	12–14 mos., well matured	7	50–756 / 35–407
CAT: Queen Tom	12 mos.	6		63	60–68
	12 mos.	6	6–8
DOG: Bitch Male	16–18 mos.	8		63	58–67
	12–16 mos.	8	8–10

1Holstein and beef: 750 lbs.; Jersey: 500 lbs. 2Beef; 8–10 days shorter for Angus. 3Dairy. 4Natural.

5Artificial. 6Hand-mated. 7Pasture. 8For fine wool breeds.

INCUBATION PERIOD OF POULTRY (DAYS)

Chicken 21

Duck 26–32

Goose 30–34

Guinea 26–28

Turkey 28

AVERAGE LIFE SPAN OF ANIMALS IN CAPTIVITY (YEARS)

Cat (domestic) 14

Chicken (domestic) 8

Dog (domestic) 13

Duck (domestic) 10

Goat (domestic) 14

Goose (domestic) 20

Horse 22

Pig 12

Rabbit 6

Turkey (domestic) 10

ESTRAL/ESTROUS CYCLE WHEN CYCLE(INCLUDING HEAT PERIOD) LENGTH OF ESTRUS (HEAT) USUAL TIME OF RECURS IFAVERAGE RANGE AVERAGE RANGE OVULATION NOT BRED
Cow	21 days	18–24 days	18 hours	10–24 hours	10–12 hours after end of estrus	21 days
Doe goat	21 days	18–24 days	2–3 days	1–4 days	Near end of estrus	21 days
Mare	21 days	10–37 days	5–6 days	2–11 days	24–48 hours before end of estrus	21 days
Sow	21 days	18–24 days	2–3 days	1–5 days	30–36 hours after start of estrus	21 days
Ewe	16½ days	14–19 days	30 hours	24–32 hours	12–24 hours before end of estrus	16½ days
Queen cat		15–21 days	3–4 days, if mated	9–10 days, in absence of male	24–56 hours after coitus	Pseudo- pregnancy
Bitch	24 days	16–30 days	7 days	5–9 days	1–3 days after first acceptance	Pseudo- pregnancy