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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. 30 hours after estrus begins
cow ovulation
Dairy Cattle milking schedule
functions of progestrone
sigmoid flexure
2. ~305 days (altough often longer due to breeding difficulties)
Dairy Cattle Lactation (standard)
prostaglandin
things to check for in a breeding soundness exam (BSE)
sow estrus
3. Produce testosterone. located between the seminiferous tubules
dartos muscle
mare gestation
Dairy Cattle milking schedule
leydid or interstitial cells
4. 14-19 (17) days
estrous
ewe estrus cycle
sigmoid flexure
oviducts
5. What makes the milk flow through the mammary glands?
Blood
scrotal circumference (BSE)
Grading choice
estrous
6. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm
scrotal circumference (BSE)
burdizzo
femininity of a heifer
van deferens
7. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %
Jersey Cow
rectal palpation (BSE)
penis sizes vs delivering methods
Grading choice
8. Why Dairy calves are fed powdered milk.
1. more cost effective - 2. powdered milk is in excess production
visual evaluation (BSE)
uterus
retractor muscles
9. Urinary calculi.
cryptorchid
Brown Swiss Cow
kidney stones also called ________ ___________ can develop in the sigmoid flexure
prostate gland
10. 336 days
ewe ovulation
mare gestation
Reasons for gestation length being affected
Dairy Cattle Gestation
11. 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.
cremaster muscle
age and castration
colostrum
ewe gestation
12. Days which have increasing daylight hours
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13. Way to know everything is alright with the breeding male
growth lost from castration methods (knife & band)
cryptorchid
purpose of Breeding Soundness Exam (BSE) for males
burdizzo
14. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.
mare gestation
stag
penis proper
oviducts
15. Animals which have many estrous periods per year (ex: cow - sow)
hormones
Blood
polyestrous
dry matter and water
16. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
dry matter and water
Size of cow in relation to the amount of milk produced
penis sizes vs delivering methods
Sperm growth rate
17. The more stressed out the male is - the less sperm he is going to produce
hypothalamus and pituitary gland
penis and prepuce observation (BSE)
humans: stress level vs sperm
Blood
18. Sperm is produced here
sperm cell
seminiferous tubules
Where livelihood is in agriculture
what has to happen for males for copulation to occur
19. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
Grading choice
penis and prepuce observation (BSE)
elastrator
humans: stress level vs sperm
20. 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.
prostaglandin
~1 month
scrotum
colostrum
21. 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.
uterus
why does the cow need fat deposits during pregnancy?
Dairy calves are removed from cow at birth to...
Reasons for gestation length being affected
22. Milk ~305 days - dry 60 days prior to calving
testosterone
Dairy Cattle milking schedule
growth lost from castration methods (knife & band)
rectal palpation (BSE)
23. 16-20 hours
seasonally polyestrous
eminal vesicles
cow estrus
Jersey Cow
24. To remove/separate testicles from animal's body before animal reaches puberty
behavioral signs of estrus
castration
rectal palpation (BSE)
cow gestation
25. 24 hours before end of estrus cycle
mare ovulation
dry-off time in dairy cattle
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
hormones
26. Way to know everything is alright with the breeding male
purpose of Breeding Soundness Exam (BSE) for males
Jersey Cow
dry-off time in dairy cattle
penis and prepuce observation (BSE)
27. Start of the reproductive tract for the female. located outside of the body
estrous
vulva
kidney stones also called ________ ___________ can develop in the sigmoid flexure
dry matter and water
28. Luteolysis happens because of the ____________ hormone
Reasons for gestation length being affected
Avg. bull specs
prostaglandin
semen evaluation (BSE)
29. To remove/separate testicles from animal's body before animal reaches puberty
Reasons for gestation length being affected
castration
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
penis proper
30. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co
Dairy Cattle milking schedule
castration
effects of BST
vagina
31. 19-23 (21) days
Hard
hormones
cow estrus cycle
prostate gland
32. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract
#1 cost in production
normal presentation of the fetus
Sperm survival specs
eminal vesicles
33. Can survive ~7 days in cow. vast majority <48 hours
cervix
Blood
Sperm survival specs
Dairy Cattle Gestation
34. When are dairy cattle dehorned?
Holstein Cow
age and castration
testosterone
~1 month
35. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed
Avg. bull specs
6-8 weeks
dry-off time in dairy cattle
Blood
36. Important 'landmark' during palpation
#1 cost in production
cervix
eminal vesicles
dry matter and water
37. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.
burdizzo
feeding a high producing dairy cow
Size of cow in relation to the amount of milk produced
retractor muscles
38. 147 days
dartos muscle
Sperm survival specs
ewe gestation
colostrum
39. 1-2 days
ewe estrus
mare gestation
Avg. bull specs
Size of cow in relation to the amount of milk produced
40. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.
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41. Animals which have only one estrous cycle (ex: dog - fox)
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
monestrous
ewe estrus
hypothalamus and pituitary gland
42. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge
6-8 weeks
sow estrus cycle
Avg. bull specs
behavioral signs of estrus
43. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)
cervix
urethra
seasonally polyestrous
feeding a high producing dairy cow
44. (male) pushes the testes outward toward the legs for a cool-down off of the body
cremaster muscle
Sperm survival specs
mare ovulation
Grading choice
45. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)
accessory sex glands
pelvis
effects of BST
epididymis: definition - 3 parts - 4 functions
46. Scar tissue plugs up chambers of udder
normal presentation of the fetus
libido test (BSE)
1. more cost effective - 2. powdered milk is in excess production
mastitis
47. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).
normal presentation of the fetus
hormones
dartos muscle
Follical Stimulating in females
48. Animal which has been castrated after puberty
Lutinizing Hormone in males
stag
reasons for castration
ewe ovulation
49. 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)
Holstein Cow
epididymis: definition - 3 parts - 4 functions
Culls bulls earlier (2 reasons)
prostate gland
50. Check feet and legs - look for masculine traits in build such as crest and muscling
leydid or interstitial cells
Follical Stimulating in females
visual evaluation (BSE)
Blood