Reproductive Traits of Domestic Animals

Question 1

Age at puberty of cattle (months, days)

Answer 1

months: 4-12 (6-8 more common)
days: 122-365 (183-243 more common)

Question 2

Age at puberty of swine (months, days)

Answer 2

months: 4-7
days: 122-213

Question 3

Age at puberty of sheep (months, days)

Answer 3

months: 4-8
days: 122-243

Question 4

Age at puberty of goat (months, days)

Answer 4

months: 1st autumn

Question 5

Age at puberty of horse (months, days)

Answer 5

months: 10-12
days: 2013-365

Question 6

Length of cycle of cattle (months, days)

Answer 6

months: ~7
days: 16-24 (Ave: 21)

Question 7

Length of cycle of swine (months, days)

Answer 7

months: ~7
days: 18-24 (Ave: 21)

Question 8

Length of cycle of sheep (months, days)

Answer 8

months: ~5
days: 14-20 (Ave: 16)

Question 9

Length of cycle of goat (months, days)

Answer 9

months: ~7
days: 12-30 (Ave: 22)

Question 10

Length of cycle of horse (months, days)

Answer 10

months: ~7 months
days: 10-37 (Ave: 22)

Question 11

Average length of estrus of cattle

Answer 11

16-18 hrs

Question 12

Average length of estrus of swine

Answer 12

3 days

Question 13

Average length of estrus of sheep

Answer 13

30 hrs

Question 14

Average length of estrus of goat

Answer 14

2.5 days

Question 15

Average length of estrus of horse

Answer 15

6 days

Question 16

Time of ovulation of cattle

Answer 16

20-40 hr from beginning of estrus;
10-14 hr after end of estrus

Question 17

Time of ovulation of swine

Answer 17

18-60 hr after start of estrus;
24 hr before end of estrus

Question 18

Time of ovulation of sheep

Answer 18

Near end

Question 19

Time of ovulation of goat

Answer 19

Near end

Question 20

Time of ovulation of horse

Answer 20

1-2 days before end of estrus

Question 21

Best time to breed cattle

Answer 21

1st: early in estrus
2nd: 12-20 hrs after start of estrus

Question 22

Best time to breed sow

Answer 22

Last 1/2 of estrus

Question 23

Best time to breed gilt

Answer 23

2nd day

Question 24

Best time to breed goat

Answer 24

Last 1/2 of estrus

Question 25

Best time to breed horse

Answer 25

3rd day;
2nd time: if still in heat, 3 days later

Question 26

Length of gestation of cattle (months, days)

Answer 26

Range: 278-289
Ave: 283
Months: ~9

Question 27

Length of gestation of swine (months, days)

Answer 27

Range: 111-115
Ave: 114
Months: ~4 (3.7)

Question 28

Length of gestation of sheep (months, days)

Answer 28

Range: 144-152
Ave: 148
Months: ~5 (4.8)

Question 29

Length of gestation of goat (months, days)

Answer 29

Range: 140-160
Ave: 151
Months: ~5 (4.9)

Question 30

Length of gestation of horse (months, days)

Answer 30

Range: 310-370
Ave: 336
Months: 11