Ansci Study Exam 2
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| What are the two functions of the MALE reproductive tract? | Produce viable spermatozoa and deliver it to the reproductive tract.
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| What organ produces testosterone and sperm cells? | the testes
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| Where do spermatozoa mature? | the epididymis
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| What cell produces testosterone? | leydig cells
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| What produces spermatozoa in the testicles? | The seminiferous tubules
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| What does the scrotum do? | Protects and regulates the temperature of the testes
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| What does the vas deferens do? | transports sperm cells
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| What does the urethra do? | Provides exit for urine and sperm
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| What do seminal vesicles do? | produces the major portion of fluids to add volume to the ejaculate
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| What does the bulbourethral gland do? | Secretes the gel portion of the ejaculate
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| What does the Ampulla do? | Allows for rapid ejaculation
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| What does the retractor penis muscle do? | Relaxes during mating to allow the sigmoidal flexure to straighten
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| Where are the testes located with poultry? | Inside the abdomen
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| Male poultry do not have penises. What do they have instead? | Cloacas
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| How long can stored TURKEY sperm stay viable? | 30 days
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| How long can stored CHICKEN sperm stay viable? | 10 days
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| What is a cryptorchid? | An animal whos testes stay inside the abdomen
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| What does castration do? | Prevents sperm and testosterone production by removing the testes
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| What is the physiological desire to mate (in female animals) called? | Estrus
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| What do the ovaries do? | Produce ovum/ova and estrogen
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| What does Corpus Luteum produce? | progesterone
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| What do the oviduct do? | Connects to each uterine horn, transports sperm and ova, and is the site of fertilization
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| What does the uterus do? | Incubates the fetus, moves sperm to the oviducts, and contracts to birth the fetus.
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| What is the cervix? | A hard barrier between the vagina and uterine body.
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| Where do boars & stallions deposit semen? | Into the cervix
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| Where do bulls & rams deposit semen? | Into the vagina
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| What is the estrous cycle? | A cyclic pattern of ovarian function after puberty
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| What is the average length of the estrous cycle for SHEEP? | 14 days
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| What is the average length of the estrous cycle for CATTLE? | 21 days
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| What does oogenesis produce? | Estrogen and FSH
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| What does Ovulation produce? | LH, CH, CL, CA, PGF
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| What is LH? | Lutenizing hormoe
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| What is CH? | Corpus Homoragicum
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| What is CL? | Corpus Luteum
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| What is CA? | Corpus Albacans
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| What is PGF? | Placental growth factor/A hormone produced that kills CL
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| When is LH produced in swine? | 40 hours after the onset of estrous
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| What is the sequence of events for the estrous cycle? | Oogenesis, Ovulation, Fertilization, Placentation, Implantation, Gestation, Parturition
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| What is the gestation period for CATTLE? | 282 days
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| What is the gestation period for SWINE? | 114 days
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| What is the gestation period for the EWE? | 150 days
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| What is the gestation period for the MARE? | 336 days
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| Which ovary and oviduct atrophies in poultry? | Right
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| What is the incubation period for CHICKENS? | 21 days
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| What is the incubation period for TURKEYS? | 28 days
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| What is AI (Artificial Insemination)? | Impregnating an animal via sperm, done by humans
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| What is estrus syncing? | Syncing estrus cycles so many animals are in estrus at the same time
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| What is superovulation? | Making a heifer produce more than one calf
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| What is embryo transferring? | Transferring an embryo from one uterus to another
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| What animals are monogastric (having one stomach)? | Pigs, Horses, and Poultry
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| What animals are ruminants (having a rumen)? | Cattle, goats, and sheep
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| What is the pattern in which food moves through the ruminant stomach? | Rumen, Reticulum, Omasum, Abomasum
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| What organ do poultry have that other animals do not? | A crop
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| When does the rumen start to function? | 6 to 8 weeks old
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| What feed types are high in energy? | Grains
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| What feed types are high in protein? | Roughages, Forages, Protein
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| What types of feeds are high in fiber? | Roughages, Forages
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| What grain has 100% energy? | Corn
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| What is the protein % of corn? | 10.1%
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| What are two types of roughages? | Silage and grass
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| What is a type of forage? | Hay
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| What are the types of fats & oils? | Animal fats and plant oils
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| What are two types of plant-based protein feeds? | Soybean meal and Cottonseed meal
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| What are two types of animal-based protein feeds? | Meat meal and Fish Meal
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| What is the most important and available nutrient? | Water
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| What is the primary ingredient in carbs? | Starch
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| What are the nutrient requirements for nonruminants? | Low fiber, high energy
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| What are the nutrient requirements for ruminants? | high fiber, low energy
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| How is daily feed consumption measured? | As a percent of the animal's body weight.
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