動物妊娠期間計算機

牛の妊娠期間は品種によって異なり、乳牛で275〜282日、肉用種で283〜294日です。

犬の妊娠期間は排卵から平均63日、または繁殖日から58〜68日です。正確なタイミングにはLHサージ検査が必要です。

ヤギの妊娠期間は平均150日（5ヶ月）で、品種や産子数によって異なります。

羊の妊娠期間は平均147日（約5ヶ月）で、品種や子羊の数によってわずかに異なります。

馬の妊娠期間は平均340日（11ヶ月）で、正常範囲は320〜370日です。牝馬の妊娠期間は大幅に異なる場合があります。

豚の妊娠期間は「3ヶ月、3週間、3日」（114日）として有名です。品種間で非常に一貫しています。

ウサギの妊娠期間は平均31日です。雌ウサギは分娩直後に再び繁殖することができます。

猫の妊娠期間は平均63〜65日です。母猫は21日頃に乳首がピンク色になることがあります。

オジロジカの妊娠期間は平均201日です。子鹿が春に生まれるようにタイミングが調整されています。

ラマの妊娠期間は平均350日（11.5ヶ月）です。ほとんどの出産は日中に行われます。

アルパカの妊娠期間は平均345日です。ラマと同様に、通常は朝に出産します。

フェレットの妊娠期間は短く、平均42日です。出産予定日が近づいたら、雌を注意深く監視する必要があります。

Donkey gestation averages 365 days (12 months), slightly longer than horses. Jennies typically give birth to a single foal.

Buffalo (bison) gestation averages 285 days, similar to cattle. Cows typically give birth to a single calf in spring.

Camel gestation averages 13 months (390 days). Dromedary and Bactrian camels have similar gestation periods.

Yak gestation averages 258 days (8.5 months). Adapted to high-altitude breeding, calves are typically born in spring.

Chicken egg incubation takes 21 days. Temperature and humidity control are critical for successful hatching.

Duck egg incubation averages 28 days. Muscovy ducks take 35 days, while most other breeds take 28 days.

Goose egg incubation takes 28-32 days depending on breed. Larger breeds may take slightly longer.

Turkey egg incubation takes 28 days. Proper temperature and humidity are essential for successful hatching.

Quail egg incubation is quick, taking only 17-18 days. Coturnix quail are popular for small-scale farming.

Guinea pig gestation averages 68 days (about 2 months). Sows can have 1-6 pups per litter.

Hamster gestation is very short, averaging 16 days. Syrian hamsters take 16 days, dwarf hamsters 18-21 days.

Chinchilla gestation averages 111 days (about 3.5 months). Litters typically consist of 1-6 kits.

Hedgehog gestation averages 35 days. Litters typically have 3-5 hoglets, born with soft spines.

Elephant gestation is the longest of any land mammal, averaging 22 months (645 days). African and Asian elephants have similar gestation periods.

Giraffe gestation averages 15 months (457 days). Calves are born standing and can walk within an hour.

Zebra gestation averages 12-13 months (375 days). Foals are born with brown and white stripes that darken with age.

Kangaroo gestation is remarkably short at 33-36 days. Joeys are born tiny and continue development in the pouch for 6-8 months.

Giant panda gestation averages 135 days but varies widely (95-160 days) due to delayed implantation. Cubs are born tiny and helpless.

Reindeer (caribou) gestation averages 228 days (7.5 months). Calves are typically born in spring when food is abundant.

Moose gestation averages 235 days (about 8 months). Cows typically give birth to 1-2 calves in late spring.

Bear gestation varies by species (180-270 days) with delayed implantation. Cubs are born during winter hibernation.

Wolf gestation averages 63 days, similar to domestic dogs. Pups are born in spring in a den prepared by the pack.