Reproductive Traits of Domestic Animals Flashcards

1
Q

Age at puberty of cattle (months, days)

A

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

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2
Q

Age at puberty of swine (months, days)

A

months: 4-7
days: 122-213

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3
Q

Age at puberty of sheep (months, days)

A

months: 4-8
days: 122-243

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4
Q

Age at puberty of goat (months, days)

A

months: 1st autumn

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5
Q

Age at puberty of horse (months, days)

A

months: 10-12
days: 2013-365

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6
Q

Length of cycle of cattle (months, days)

A

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

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7
Q

Length of cycle of swine (months, days)

A

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

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8
Q

Length of cycle of sheep (months, days)

A

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

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9
Q

Length of cycle of goat (months, days)

A

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

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10
Q

Length of cycle of horse (months, days)

A

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

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11
Q

Average length of estrus of cattle

A

16-18 hrs

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12
Q

Average length of estrus of swine

A

3 days

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13
Q

Average length of estrus of sheep

A

30 hrs

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14
Q

Average length of estrus of goat

A

2.5 days

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15
Q

Average length of estrus of horse

A

6 days

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16
Q

Time of ovulation of cattle

A

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

17
Q

Time of ovulation of swine

A

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

18
Q

Time of ovulation of sheep

A

Near end

19
Q

Time of ovulation of goat

A

Near end

20
Q

Time of ovulation of horse

A

1-2 days before end of estrus

21
Q

Best time to breed cattle

A

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

22
Q

Best time to breed sow

A

Last 1/2 of estrus

23
Q

Best time to breed gilt

A

2nd day

24
Q

Best time to breed goat

A

Last 1/2 of estrus

25
Q

Best time to breed horse

A

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

26
Q

Length of gestation of cattle (months, days)

A

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

27
Q

Length of gestation of swine (months, days)

A

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

28
Q

Length of gestation of sheep (months, days)

A

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

29
Q

Length of gestation of goat (months, days)

A

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

30
Q

Length of gestation of horse (months, days)

A

Range: 310-370
Ave: 336
Months: 11