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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. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm
reason for seasonal breeding periods
prostaglandin
feeding a high producing dairy cow
Follical Stimulating in males
2. 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.
why does the cow need fat deposits during pregnancy?
Dairy calves are removed from cow at birth to...
mare ovulation
semen evaluation (BSE)
3. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation
dairy cattle pregnancy check
dry-off time in dairy cattle
1. more cost effective - 2. powdered milk is in excess production
things to check for in a breeding soundness exam (BSE)
4. 16-20 hours
mare ovulation
cow estrus
oviducts
age and castration
5. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge
Follical Stimulating in males
vagina
dairy cattle pregnancy check
behavioral signs of estrus
6. Birthing process (termination of gestation)
seasonally polyestrous
Dairy Cattle Gestation
reasons for castration
Parturition
7. % of fat in milk. makes cheeses and ice cream. regulates cost of milk
1. more cost effective - 2. powdered milk is in excess production
6-8 weeks
butterfat
Dairy Cattle milking schedule
8. Urinary calculi.
mastitis
Dairy Cattle Gestation
Lutinizing Hormone in males
kidney stones also called ________ ___________ can develop in the sigmoid flexure
9. 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)
age and castration
behavioral signs of estrus
feeding a high producing dairy cow
Reasons for gestation length being affected
10. 147 days
Avg. bull specs
eminal vesicles
ewe gestation
things to check for in a breeding soundness exam (BSE)
11. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm
dartos muscle
scrotal circumference (BSE)
sow estrus
why does the cow need fat deposits during pregnancy?
12. Milk ~305 days - dry 60 days prior to calving
Dairy Cattle milking schedule
Reasons for gestation length being affected
cow gestation
Dairy calves are removed from cow at birth to...
13. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).
oviducts
mare gestation
hormones
organs used in spermatogenesis
14. Failure to have one testis (gonad) to descend
kidney stones also called ________ ___________ can develop in the sigmoid flexure
monorchid
ewe ovulation
Hormones from both the fetus and the mom.
15. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
effects of estrogen
Bull's fibro-elastic penis
sow estrus
monorchid
16. 24 hours before end of estrus cycle
spermatogenesis
estrous
mare ovulation
hypothalamus and pituitary gland
17. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm
growth lost from castration methods (knife & band)
prostaglandin
cow ovulation
Follical Stimulating in males
18. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers
hormones
Blood
estrus
Where livelihood is in agriculture
19. 283 days
sperm cell
cow gestation
femininity of a heifer
4 major reasons for culling dairy cows
20. FEED
growth lost from castration methods (knife & band)
kidney stones also called ________ ___________ can develop in the sigmoid flexure
age and castration
#1 cost in production
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.
Bull's fibro-elastic penis
femininity of a heifer
what has to happen for males for copulation to occur
uterus
22. To remove/separate testicles from animal's body before animal reaches puberty
penis and prepuce observation (BSE)
castration
what has to happen for males for copulation to occur
Follical Stimulating in females
23. Front feet and head first. (except for hogs and dogs)
scrotal circumference (BSE)
normal presentation of the fetus
stag
sow estrus cycle
24. 265-285 days
dry-off time in dairy cattle
penis proper
why does the cow need fat deposits during pregnancy?
Dairy Cattle Gestation
25. What about the sperm for a bull which has been castrated but still has testicles?
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
effects of estrogen
#1 cost in production
polyestrous
26. 19-23 (21) days
cow estrus cycle
mastitis
urethra
cow gestation
27. 1-3 days
sow estrus cycle
~1 month
sow estrus
4 major reasons for culling dairy cows
28. Male on one pin and female on other side
libido test (BSE)
cow ovulation
organs used in spermatogenesis
Blood
29. The more stressed out the male is - the less sperm he is going to produce
seasonally polyestrous
6-8 weeks
kidney stones also called ________ ___________ can develop in the sigmoid flexure
humans: stress level vs sperm
30. Can survive ~7 days in cow. vast majority <48 hours
penis proper
testis (gonads)
Sperm survival specs
Dairy calves are removed from cow at birth to...
31. What helps regulate spermatogenesis?
testosterone
mare estrus
functions of progestrone
reason for seasonal breeding periods
32. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)
dry-off time in dairy cattle
4 major reasons for culling dairy cows
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
ewe gestation
33. (male) pushes the testes outward toward the legs for a cool-down off of the body
Blood
feeding a high producing dairy cow
mare ovulation
cremaster muscle
34. 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.
Culls bulls earlier (2 reasons)
reason for seasonal breeding periods
4 major reasons for culling dairy cows
sperm cell
35. 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
Size of cow in relation to the amount of milk produced
functions of progestrone
cow ovulation
36. Animals which have only one estrous cycle (ex: dog - fox)
seasonally polyestrous
effects of BST
reason for seasonal breeding periods
monestrous
37. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
Bull's fibro-elastic penis
kidney stones also called ________ ___________ can develop in the sigmoid flexure
rectal palpation (BSE)
kidney stones also called ________ ___________ can develop in the sigmoid flexure
38. Provide nourishment for the developing sperm
sertoli cells
Dairy Cattle milking schedule
penis sizes vs delivering methods
van deferens
39. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)
ewe ovulation
1. more cost effective - 2. powdered milk is in excess production
seasonally polyestrous
prostaglandin
40. Start of the reproductive tract for the female. located outside of the body
sow ovulation
age and castration
vulva
Size of cow in relation to the amount of milk produced
41. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %
mare estrus
Jersey Cow
ewe gestation
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
42. Way to know everything is alright with the breeding male
purpose of Breeding Soundness Exam (BSE) for males
Lutinizing Hormone in males
prostate gland
van deferens
43. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated
penis and prepuce observation (BSE)
burdizzo
behavioral signs of estrus
Dairy Cattle Lactation (standard)
44. When are steers and heifers weaned from bottle feeding?
6-8 weeks
cervix
elastrator
castration
45. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
scrotum
elastrator
retractor muscles
Dairy calves are removed from cow at birth to...
46. % of fat in milk. makes cheeses and ice cream. regulates cost of milk
Dairy Cattle Gestation
butterfat
Dairy Cattle milking schedule
penis sizes vs delivering methods
47. Provide nourishment for the developing sperm
growth lost from castration methods (knife & band)
sertoli cells
testosterone
hypothalamus and pituitary gland
48. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.
penis proper
mare's estrous cycle
Jersey Cow
retractor muscles
49. 14-19 (17) days
femininity of a heifer
Dairy Cattle milking schedule
ewe estrus cycle
dartos muscle
50. 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)
eminal vesicles
mare estrus
why does the cow need fat deposits during pregnancy?