Sheep and Goat Reproduction Flashcards
What species are the earliest domesticated animals?
Sheep and goats
What are 4 things to consider with reproductive management of goats?
Purpose of the farm
Farm capabilities
Animal capabilities
Time to achieve goal
What type of kidding do you want if the purpose of your farm is dairy?
Year round kidding for constant supply
What are 5 breeds of dairy goat?
Nubian Toggenburg Alpine Lamancha Saanan
What type of kidding do you want if the purpose of your farm is meat?
Controlled kidding
How long do you keep a buck with the does to get a uniform kid crop?
32 days (1.5 cycles)
What are 5 breeds of meat goat?
Boer Kiko Pygmy Tennessee stiff-leged (fainting goats) Spanish
What are 2 breeds of fiber goat?
Angora
Cashmere
What are the 4 types of production in sheep?
Meat
Wool
Milk
Pet
What do you look for when selecting for increased reproduction?
Select for twins and triplets.
What body weight do you want a sheep or goat to reach before they enter the breeding herd?
60-70% of their adult weight
When do sheep and goats reach puberty?
5-15 months (>60% adult body weight)
What factors affect sheep and goats reaching puberty?
Time of lambing
Nutrition
Ram selection
How long can you typically keep a ewe or doe in your breeding herd?
3-6 years
What do you want to watch for in ewes and does to determine drop in production?
Decrease in number of babies (eg. usually has triplets now having twins)
How long is the estrous cycle in the ewe?
17 days
How long is the estrous cycle in the doe?
21 days
Which species has CL dependent production of Progesterone?
The goat
And goats and sheep short or long-day breeders?
Short-day breeders
How does day-length affect cyclicity?
Increasing darkness increases melatonin from the pineal gland, which increases GnRH from the hypothalamus which releases LH.
What does estrus in the doe look like?
Tail wagging, bleating, restlessness, pacing and vulvar swelling.
What does estrus in the ewe look like?
Vulvar swelling, anorexia.
When do you put vasectomized teaser rams out with the ewes?
14 days prior
What is flushing?
20-30 % increase in nutrient uptake 2-3 weeks prior to breeding.