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37 Cards in this Set
- Front
- Back
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Testosterone |
-critical for sperm development
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Estrogen |
-critical for follicle development
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Progesterone **Pregnancy Hormone** |
-Sustains pregnancy and inhibits new follicle development |
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Relaxin |
causes ligaments around birth canal to relax |
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Oxytocin |
causes milk letdown/ from post. pit. |
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Male Repro Sys |
Testes/Epididymis/Scrotum |
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Testes |
-primary male repro organ ---> Site of sperm production and testosterone synthesis -->Sperm contain 1/2 of genetic makeup |
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Epididymis |
Surrounds testes and Sperm storage and maturation |
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Scrotum |
protects testes and regulates temp. |
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Vas Deferens |
Transports sperm from epididymis to urethra |
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Urethra |
struct. located into the penis, transports sperm to the outside**external access point** -tube inside of penis transports sperm or urine exterior |
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Penis |
organ of copulation |
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Females vs. Males |
females are born w/ an egg males constantly producing sperms |
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Ovaries |
-primary repro organ --produce egg --egg contains 1/2 of genetic material |
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Oviducts |
-site of fert. -transport embryos to uterus |
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Uterus |
-site of embryonic dev. during gestation |
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Cervix |
-connection b/t the uterus and the vagina -serves as a barrier during preg. |
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Vagina |
-fem. organ of copulation at mating -opening of bladder |
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Vulva |
-ext. opening of repro sys |
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Bicornuate |
Mare/Cow Bitch,Queen,Sow |
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Duplex |
-two cervices -Marsupials,Rabbits,Rodents
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Simplex |
primates |
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Uterine Horns SOW vs COW vs MARE |
Uterine horns are a lot more compact in a mare
much more dispersed and spread out in a sow |
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Events of Repro *Puberty* |
age at which repro organs become functional |
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Events of Repro next event in fem. after puberty |
-cyclic repro procc. --ESTROUS cycle-repetitive cycle occurring when preg does not happen --ESTRUS-"HEAT" or receptive to male/mating |
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Fertilization |
sperm and egg unite/occurs in the oviduct of the uterus -only real male contribution is the sperm |
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Gestation |
length of time of preg |
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Parurtition |
act of giving birth |
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ESTRUS (noun) |
period of time, an event when fem. is sexually receptive |
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ESTROUS |
adj. pertaining to Estrus |
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Factors Affecting Puberty |
species- breed- based on body wt. and size (mini horse will reach maturity quicker) brown swiss large frame take forever to grow, jersey quick maturation climate- season-seasonal breeders nutrition-over or under condition may not show heat |
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Factors Affecting Puberty |
management practices stress ( any lack of these things can pose for a stressful environment)
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Estrous Cycle |
Cattle-Polyestrous (cycle throughout the year) Sheep,Goat,Deer: Seasonal (Decreasing light, Fall=short day breeders) Horses and Poultry: Seasonal (Increasing daylight, spring= long day breeders) Swine: Polyestrous but "want" to be long day breeders |
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Duration od Estrus |
Cattle: 6-27 hrs |
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? |
? |
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Signs of Estrus |
-swollen vulva -mucous discharge -restless behavior -female receptivity to male |
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Specific signs of estrus |
cattle:visually active mounting, increased locomotion, decreased in DMI(dry matter intake) sheep:few ext. signs swine:brace w/ pressure to back, vocal grunting Horses:Vocalization, increased urination, tease w/ stallion |
