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ADVS 1110 Midterm > Module 3 > Flashcards

Module 3 Flashcards

1
Q

How do you measure the reproductive efficiency in cattle

A

Conception rate, weaning rate
services per conception
calving interval, calving season

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2
Q

What is the female gonad and what is its function

A

Ovary, produces female gametes (Ova) and produces estrogen and progesterone

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3
Q

Primordial follicles

A

Present at birth
decrease in number as female matures

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4
Q

primary follicles

A

remain at this stage until puberty
most never ovulate and undergo atresia

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5
Q

secondary follicles

A

increase in granulosa cell layers
formation of zona pellucida
theca interna and externa

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6
Q

tertiary folicles

A

maturing follicles
antrum formation
- fluid filled space
- liquor folliculi

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7
Q

What is the difference between a cow/ewe/sow/mare uterus and a human uterus

A

Animal have bicornuaate uteri where as humans have simplex uteri (no horns)

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8
Q

What does a cow cervix look like

A

annular rings

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9
Q

What does a Ewe cervix look like

A

annular rings

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10
Q

What does a sow cervix look like

A

corkscrew

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11
Q

What does a mare cervix look like

A

longitudinal folds

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12
Q

What is the Main difference in chicken repro

A

Female has both right and left ovary but only the left develops, yolk is parent material ovulated and its a 24 hr process

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13
Q

Testes and their function

A

Male gonads, function to produce male gametes (spermatozoa), produce male hormones (androgens) (testosterone)

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14
Q

What hormones are required for spermatogenesis

A

FSH and LH

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15
Q

what are the cell types for spermatogenesis

A

peritubular myoid, leydig, sertoli, gametes- spermatogonia, spermatocytes, spermatids, spermatozoa

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16
Q

What are the three parts to the penis

A

Root (crus penis), Body (corpus), Glans penis

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17
Q

What is the difference between the fibroelastic penis and the vascular penis

A

Fibroelastic is with muscle and the vascular is with blood

18
Q

A BSE (Breeding Soundness Exam) does not

A

Guarantee fertility and does not detect libido

19
Q

Factors influencing a BSE

A

Age of male
Disease
Heat stress
Body Condition
Collection procedure

20
Q

Estrous cycle

A

physiologic events that occur between periods of sexual receptivity (Heat) and/or ovulations; such as in farm animals

21
Q

Estrus

A

Period of sexual receptivity

22
Q

Anestrus

A

condition when females do not exhibit regular estrous cycles

23
Q

Polyestrus

A

uniform distribution of estrous cycles occurring regularly throughout the year
cow, sow

24
Q

Luteinizing Hormone (LH)

A

Source: anterior pituitary
Targets: Ovary and testis
Functions: ovulation, corpus leteum (CL) formaiton, progesterone production, testosterone production,

25
Q

Follicle Stimulating Hormone (FSH)

A

Source: Anterior pituitary
Targets: Ovary and testis
Function: follicular development, estrogen synthesis, sperm production,

26
Q

What does GnRH stand for and what is the function

A

Gonadotropin Releasing Hormone
it releases LH and FSH

27
Q

How longs is the Ewe estrous cycle

A

17 days

28
Q

Seasonally polyestrous animals only cycle during certain times of the year. horses cycle when daylight hours are ______ and sheep cycle when daylight hours are _______. in class we discussed some reasons why this may be. One reason was _____ length of the animal.

A

long, short, gestation

29
Q

What hormone starts parturition

A

cortisol released from the fetus

30
Q

what is relative dystocia

A

normal sized calf and a small birth canal

30
Q

absolute dystocia

A

abnormally large calf and a normally sized birht canal

31
Q

What are some of the visual signs of estrus detection

A

Inspect 30 minutes in the morning and in the evening
standing to be mounted (lordosis)
Mounting of other cows
swollen vulva
mucus

32
Q

what percent of calfs are bred artificially

A

80-90%

33
Q

what is PGF2a

A

prostaglandin F2a

34
Q

what is MGA

A

melengestrol acetate

35
Q

What synchronization product is like an IUD

A

Eazi-Breed CIDR

36
Q

What is a gonad

A

on argan that produces sperm or ova

37
Q

what is a gamete

A

sperm and ova

38
Q

What area of the epididymis is mature sperm stored

A

tail

39
Q

Where is the mitochondria on sperm

A

mid piece

ADVS 1110 Midterm (5 decks)

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