Goats Flashcards
How do we name the adult female?
Doe or nanny
How do we name the adult intact male?
Buck or billy
How do we name the adult neutered male?
Wethers
How do we name the baby goat?
Kid
Age of puberty
3-7 months of age. (male: when spermatozoas found in ejaculation, female: first estrus and ovulation) Varies on weight, breed. Will usually weigh 32kg
Females are polyestrous or monoestrous?
Polyestrous
Females are seasonal or non-seasonal?
Seasonal
When is the breeding season, if any?
Peak sexual activity in the fall when day length is decreasing. In temperate regions usually in fall and winter to allow for kidding in spring and summer. Short day breeders
Length of estrous cycle
Average of 21 days
Length of estrus period
Average length of standing estrus is 36h but can range from 24-48 hours
How do we detect the estrus period?
Behaviorally : Bleating (vocalization), restlessness, inappetance, flagging the tail (vigorous wagging), reddened vulva, vaginal discharge, being mounted by other does (but not as commonly as in cattle). Could also use: mount detection aids, heat detector animals.
Tests:
a) May rub the goats back, if she twitches her tail vigorously, she may be in heat.
b) Rub a cloth on a buck so it gets his scent and then present it to the doe. If she becomes attracted and excited she may be in heat.
What is the best time to do mating?
12-18 hours after the onset of estrus.
Is artificial insemination done? If yes, explain the method.
Yes, artificial insemination is done in goats. Semen is collected through an artificial vagina most prominently (AV) (also be done by electroejaculation), and is usually frozen after collection, or used fresh. Optimal time for insemination is 12-18 hours after onset of estrus. Fresh or chilled semen can be placed into the vagina or cervix. Extended fresh, chilled or frozen-thawed semen can be placed into the uterus (since motility is decreased).
Pregnancy length
Gestation length is 145-155 days (avrg. 150 days) can be affected by breed, litter weight, and environment.
Describe the type of placenta
Cotyledonary placenta
How do we detect pregnancy?
1-manual palpation of the abdomen seems different then normal if you notice it’s abdomen diameter has increased by more than 1 inch after 6 weeks.
2- urine & blood test performed by the vet.Perform this type of test after 40 to 50 days of gestation period. Early test may not provide you an accurate result.
How do we name the parturition?
Kidding
How long lasts the parturition? Give the length for each stage
This stage of labor may last for only a few hours or it may last for 12 to 24 hours.
Stage 1: up to 12hrs
Stage 2: 1-2 hrs
Stage 3: 12 hrs
Litter size
1-2 kids first pregnancy and up to 2-4 Kids
Give 2 characteristic concerning the anatomy of the penis
- Sigmoid (S-shaped) flexure
- Urethra extends 2-3 cm beyond end of penis
- (Also: Fibroelastic)
What is the buck effect?
The sudden introduction of a male induces ovulation of anestrous goats
Name 2 different breeds of meat goats
Boer goats, Tennessee Meat Goat
Name 2 different breeds of milk goats
Alpine goat, Beetal goat
What is chlamydiosis
Bacteria of the order Chlamydiales are ubiquitous, obligate intracellular gram-negative bacteria. Within the host cell, they replicate via a unique developmental cycle competing with the host for intracellular nutrient pools. Virtually any chlamydial organism can infect any eukaryotic host cell, resulting in various infections.
