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Test your basic knowledge |
Dairy Cattle And Reproduction
Start Test
Study First
Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. (LH) causes female's egg to break (her period)
Lutinizing Hormone in females
oviducts
scrotal circumference (BSE)
dairy cattle pregnancy check
2. Help to signal hormone levels which we need both in the brain right next to each other.
mastitis
penis sizes vs delivering methods
hypothalamus and pituitary gland
Brown Swiss Cow
3. 19-23 (21) days
growth lost from castration methods (knife & band)
sow estrus cycle
cowper's gland
behavioral signs of estrus
4. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total
cow gestation
testis (gonads)
Avg. bull specs
colostrum
5. 1. brain function - 2. blood flow - 3. willing female
urethra
purpose of Breeding Soundness Exam (BSE) for males
what has to happen for males for copulation to occur
Mares
6. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.
colostrum
ewe estrus
dry matter and water
Sperm growth rate
7. Male on one pin and female on other side
Blood
libido test (BSE)
Dairy Cattle milking schedule
sow estrus
8. 147 days
cervix
functions of progestrone
~1 month
ewe gestation
9. (male) pushes the testes outward toward the legs for a cool-down off of the body
cremaster muscle
testosterone
sow ovulation
vagina
10. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat
Holstein Cow
Size of cow in relation to the amount of milk produced
seasonally polyestrous
1. more cost effective - 2. powdered milk is in excess production
11. Animals which have many estrous periods per year (ex: cow - sow)
prostaglandin
Hard
polyestrous
penis sizes vs delivering methods
12. Sperm production
testosterone
spermatogenesis
dry matter and water
dairy cattle pregnancy check
13. 14-19 (17) days
ewe estrus cycle
cow ovulation
Mares
4 major reasons for culling dairy cows
14. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed
spermatogenesis
Avg. bull specs
prostate gland
Lutinizing Hormone in males
15. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
seasonally polyestrous
Lutinizing Hormone in males
effects of estrogen
Dairy calves are removed from cow at birth to...
16. 1-3 days
sow estrus
mare's estrous cycle
elastrator
ewe gestation
17. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
cow estrus cycle
Mares
mare gestation
Where livelihood is in agriculture
18. Front feet and head first. (except for hogs and dogs)
spermatogenesis
age and castration
dairy cattle pregnancy check
normal presentation of the fetus
19. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.
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20. Sperm production
retractor muscles
spermatogenesis
vulva
cryptorchid
21. 1-3 days
libido test (BSE)
femininity of a heifer
sow gestation
sow estrus
22. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
libido test (BSE)
urethra
effects of estrogen
elastrator
23. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.
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24. Duct through penis that carries sperm and urine
Dairy Cattle Gestation
accessory sex glands
ewe ovulation
urethra
25. (male) pushes the testes upward toward the body for warmth or protection
growth lost from castration methods (knife & band)
Hard
prostaglandin
dartos muscle
26. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm
mastitis
Follical Stimulating in males
Size of cow in relation to the amount of milk produced
cremaster muscle
27. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.
Mares
Jersey Cow
van deferens
sperm cell
28. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.
Blood
scrotal circumference (BSE)
uterus
hormones
29. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.
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30. When are dairy cattle dehorned?
femininity of a heifer
~1 month
1. more cost effective - 2. powdered milk is in excess production
cryptorchid
31. Allows extension of penis without fibro-elastic penis
ewe estrus
sigmoid flexure
burdizzo
Sperm growth rate
32. Important 'landmark' during palpation
cervix
ewe estrus cycle
4 major reasons for culling dairy cows
accessory sex glands
33. Contains and regulates the temp of the testes for sperm production
hypothalamus and pituitary gland
sow gestation
growth lost from castration methods (knife & band)
scrotum
34. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
rectal palpation (BSE)
growth lost from castration methods (knife & band)
testis (gonads)
monestrous
35. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)
Grading choice
accessory sex glands
Dairy Cattle Gestation
scrotum
36. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days
epididymis: definition - 3 parts - 4 functions
Dairy Cattle Lactation (standard)
Sperm survival specs
growth lost from castration methods (knife & band)
37. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market
elastrator
reasons for castration
dartos muscle
#1 cost in production
38. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
eminal vesicles
estrus
Dairy Cattle milking schedule
penis sizes vs delivering methods
39. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
Brown Swiss Cow
age and castration
hormones
mare ovulation
40. Superior genes are _______ to multiply
Hard
6-8 weeks
purpose of Breeding Soundness Exam (BSE) for males
cervix
41. The more stressed out the male is - the less sperm he is going to produce
why does the cow need fat deposits during pregnancy?
Grading choice
oviducts
humans: stress level vs sperm
42. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
sow estrus cycle
vulva
penis sizes vs delivering methods
cow ovulation
43. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)
prostate gland
spermatogenesis
effects of BST
epididymis: definition - 3 parts - 4 functions
44. Start of the reproductive tract for the female. located outside of the body
vulva
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
van deferens
spermatogenesis
45. 14-19 (17) days
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
cow ovulation
ewe estrus cycle
Dairy Cattle Gestation
46. 26 hours after estrus begins
~1 month
Sperm survival specs
penis and prepuce observation (BSE)
ewe ovulation
47. 265-285 days
Dairy Cattle Gestation
ewe estrus cycle
oviducts
Parturition
48. Sperm is produced here
seminiferous tubules
cremaster muscle
Sperm survival specs
prostate gland
49. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge
Lutinizing Hormone in females
prostaglandin
behavioral signs of estrus
retractor muscles
50. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %
pelvis
Jersey Cow
humans: stress level vs sperm
penis proper