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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. FEED
#1 cost in production
Hard
eminal vesicles
Reasons for gestation length being affected
2. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
leydid or interstitial cells
ewe's estrous cycle
Dairy calves are removed from cow at birth to...
age and castration
3. Duct through penis that carries sperm and urine
Dairy calves are removed from cow at birth to...
sigmoid flexure
urethra
sertoli cells
4. 26 hours after estrus begins
ewe ovulation
humans: stress level vs sperm
mare estrus
1. more cost effective - 2. powdered milk is in excess production
5. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.
oviducts
4 major reasons for culling dairy cows
Dairy Cattle Lactation (standard)
Dairy calves are removed from cow at birth to...
6. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
Mares
scrotum
Parturition
libido test (BSE)
7. The more stressed out the male is - the less sperm he is going to produce
monorchid
colostrum
humans: stress level vs sperm
penis sizes vs delivering methods
8. Animals which have only one estrous cycle (ex: dog - fox)
monestrous
femininity of a heifer
seminiferous tubules
Dairy Cattle Lactation (standard)
9. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %
Jersey Cow
cremaster muscle
libido test (BSE)
cow gestation
10. Contains and regulates the temp of the testes for sperm production
scrotum
mastitis
Hard
effects of estrogen
11. ~60 days before calving
feeding a high producing dairy cow
vagina
dry-off time in dairy cattle
prostate gland
12. Larger the cow - more milk is produced; smaller the cow - less milk is produced
vagina
Dairy Cattle Gestation
Size of cow in relation to the amount of milk produced
ewe estrus cycle
13. 26 hours after estrus begins
cowper's gland
Reasons for gestation length being affected
pelvis
ewe ovulation
14. ~305 days (altough often longer due to breeding difficulties)
urethra
Dairy Cattle Lactation (standard)
Size of cow in relation to the amount of milk produced
femininity of a heifer
15. Not under a timeline - cow can not be sold as steak
Sperm growth rate
sertoli cells
dry-off time in dairy cattle
Grading choice
16. (FSH) causes egg to mature in females
Follical Stimulating in females
mare estrus
normal presentation of the fetus
dry-off time in dairy cattle
17. (male) pushes the testes outward toward the legs for a cool-down off of the body
organs used in spermatogenesis
kidney stones also called ________ ___________ can develop in the sigmoid flexure
testosterone
cremaster muscle
18. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge
1. more cost effective - 2. powdered milk is in excess production
Size of cow in relation to the amount of milk produced
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
behavioral signs of estrus
19. 114 days
sow gestation
penis and prepuce observation (BSE)
estrous
dairy cattle pregnancy check
20. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells
accessory sex glands
Grading choice
dartos muscle
organs used in spermatogenesis
21. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat
functions of progestrone
feeding a high producing dairy cow
Dairy Cattle milking schedule
Avg. bull specs
22. Sperm is produced here
seminiferous tubules
behavioral signs of estrus
mare's estrous cycle
feeding a high producing dairy cow
23. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells
cow estrus
cow estrus cycle
organs used in spermatogenesis
epididymis: definition - 3 parts - 4 functions
24. Start of the reproductive tract for the female. located outside of the body
vulva
prostaglandin
Hormones from both the fetus and the mom.
scrotum
25. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
ewe ovulation
vagina
pelvis
scrotal circumference (BSE)
26. Birthing process (termination of gestation)
monorchid
pelvis
Parturition
mare estrus
27. 16-20 hours
mare's estrous cycle
cow estrus
vagina
Dairy Cattle milking schedule
28. Knife-loose ~1wk of growth. band-loose ~2wks of growth.
burdizzo
Follical Stimulating in males
growth lost from castration methods (knife & band)
sow estrus cycle
29. Important 'landmark' during palpation
retractor muscles
monorchid
cervix
things to check for in a breeding soundness exam (BSE)
30. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.
age and castration
stag
Culls bulls earlier (2 reasons)
organs used in spermatogenesis
31. Microscopic - make sure not sterile - very few bulls are actually tested
Bull's fibro-elastic penis
Hormones from both the fetus and the mom.
semen evaluation (BSE)
scrotum
32. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation
purpose of Breeding Soundness Exam (BSE) for males
reason for seasonal breeding periods
Jersey Cow
things to check for in a breeding soundness exam (BSE)
33. Important 'landmark' during palpation
testis (gonads)
Where livelihood is in agriculture
cervix
rectal palpation (BSE)
34. Luteolysis happens because of the ____________ hormone
cryptorchid
prostaglandin
eminal vesicles
cow ovulation
35. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated
stag
Jersey Cow
burdizzo
scrotum
36. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
Avg. bull specs
Sperm growth rate
Jersey Cow
Reasons for gestation length being affected
37. Milk ~305 days - dry 60 days prior to calving
burdizzo
Dairy Cattle milking schedule
Where livelihood is in agriculture
cervix
38. When are dairy cattle dehorned?
eminal vesicles
~1 month
dry matter and water
cow ovulation
39. Larger the cow - more milk is produced; smaller the cow - less milk is produced
Blood
dairy cattle pregnancy check
Size of cow in relation to the amount of milk produced
vulva
40. 1-2 days
Where livelihood is in agriculture
ewe estrus
Dairy Cattle Lactation (standard)
testis (gonads)
41. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)
semen evaluation (BSE)
seasonally polyestrous
Culls bulls earlier (2 reasons)
kidney stones also called ________ ___________ can develop in the sigmoid flexure
42. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)
dry matter and water
4 major reasons for culling dairy cows
dry-off time in dairy cattle
cryptorchid
43. Allows extension of penis without fibro-elastic penis
sigmoid flexure
vulva
butterfat
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
44. Animal which has been castrated after puberty
spermatogenesis
Follical Stimulating in females
semen evaluation (BSE)
stag
45. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.
dry matter and water
colostrum
why does the cow need fat deposits during pregnancy?
monorchid
46. Knife-loose ~1wk of growth. band-loose ~2wks of growth.
penis sizes vs delivering methods
purpose of Breeding Soundness Exam (BSE) for males
growth lost from castration methods (knife & band)
estrus
47. 14-19 (17) days
vagina
monorchid
ewe estrus cycle
Dairy Cattle Gestation
48. 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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49. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm
prostaglandin
mare gestation
scrotal circumference (BSE)
elastrator
50. Allows extension of penis without fibro-elastic penis
sigmoid flexure
ewe ovulation
Reasons for gestation length being affected
cow gestation