Male and Female Repro System Flashcards
What is the incubation period for chicken eggs?
21 Days
Advances in AI (Artificial insemination) permits livestock producers to use outstanding sites for genetic improvement and to control reproductive diseases in their herds
True
The release of the ovum in cows or ova in sows is often referred to as ____
Ovulation
The hormone in the female animal that causes the cessation of pregnancy or triggers parturition is ___
PGF2A
Only the right ovary is functional in producing an ovum in the avian species because the left ovary atrophies
False
The ovum is enclosed in a fluid filled cavity during development. This structure on the ovary is known as the ___
Follicle
___ is the hormone secreted by the female reproductive tract that causes sexual excitability in cows, ewes, sows, etc
Estrogen
___ is the length of the gestation in the sow
114 Days
Fertilization occurs in the oviduct in the female reproductive tract because during estrus conditions in the Fallopian tube are suitable for fertilization to occur
True
In the sexually mature gilt or heifer ___ cells are involved in the production of the female secondary sex hormone estrogen
Graafian follicle
The hormigone on the female animals that stimulates follicular development is ___
FSH
Ovarian functions occur in a cyclic manner following puberty. The period of time when the animal shows signs of sexual receptivity is referred to in reproductive physiology as:
Estrus
The groom one that is produce by corpus outrun and functions in preventing estrus during pregnancy is known as:
Progesterone
The hormone in the female animal that triggers ovulation the ovum or ova from the ovary is ___
LH
Which principal hormones are involved in brining about successful parturition?
Prolactin and Oxytocin
The primary organ of the female reproductive system produces ____ and ____, while the primary organ of the male reproductive system produces ____ and ___
Ova & estrogen and spermatozoa & testosterone
In the sexually mature boar or bull ___ cells are involved in the generation of spermatozoa
Seminiferous Tubules
Factors affecting sperm production are numerous in animal production. Which of the following factors would be considered a hereditary factor that affects sperm production
Cryptorchids
Sperm stored in the oviduct it is capable of fertilizing eggs for up to 30 days in turkeys and 10 days in chickens
True
In male birds (chickens) the resolves are retained in the abdomen even after they are hatched. The following statement(s) is(are) true about male birds at sexual maturity
A and C above
A cryptorchid is an animal whose testicles do not drop into the scrotal sacs at birth. A cryptorchid bull will typically be able to produce spermatozoa that is viable and will fertilize an ovum of the ejaculate is used (though AI) to mate a cow
False
In our class discussion, the funnel like structure that catches the ova as they are released from the ovary of a sow during ovulation is known as the:
Infundibulum
___ is the meiotic process that results in the development of an ovum in the cow
Oogenesis
The increase in performance often observed in the crossbred progeny over the average performance of their parents is often referred to in genetics as:
Hybrid Vigor
In the sexually mature boar or bull ___ cells are involved in the production of the male secondary sex hormone testosterone
Leydig Cells
Reproductive efficiency in farm animals is measured by the number of _____
All of the above
In the sexually mature boar or bull ____ cells are involved in the generation of seminal fluids to add volume to spermatozoa
Seminal Vesicles
In livestock production what is the reason given by producers for castrating male animals that are raised and sold as meat
All of the above are correct
List the four phases of the estrous cycle in the proper sequence of the estrus cycle events
Proestrus, estrus, metestrus, and diestrus
What so the main function of the placenta in the cow reproductive system?
Housing and protection of the developing fetus
In animal reproduction, the advantages of the technologies of multiple ovulations, estrus synchronization, embryo sexing and transplantation is the increased production of bull calves in beef cattle and increased production of heifer calves in dairy cattle
True
Many environmental and hereditary factors affect fertility in both sides and dams; however, hereditary factors are usually temporary while environmental factors are usually permanent
False
___ is the average length of the estrous cycle in the ewe and ___ is the average length of the estrous cycle in the sow.
17 and 28 days
The incubation period for turkey eggs is ___.
28 Days
In our class discussion the funnel like structure that catches the ova as this are released form the ovary of a sow during ovulation is known as the:
Infundibulum
The scar tissue(s) left in the ovary after ovulation occurs in either cow or sow reproductive tracts is/are known as ___.
Corpus Lutea
Ovarian functions occur in a cyclic manner following puberty. This cyclic nature of events is known as the:
Estrous cycle
___ is the length of gestation in the cow
282 Days
___ is the reproductive technique or process used to control the estrous cycle so that female animals in the her are in estrus at the same time
Estrus Synchronization
___ and ___ are considered technological advances in reproduction:
A and B above
___ is the length of gestation in the ewe or doe
150 days
___ is the length of the gestation in the mare
335 days
Which major hormone of produced by testicular cells that is responsible for male secondary sex characteristics
Testosterone
Is the meiotic process that relies in the development of the sperm in make farm animals
Spermatogenesis
Artificial Insemination (AI) a technology in animal reproduction allows for extensive use of outstanding sires for genetic improvement. AI is primarily used for genetic improvement in the beef industry than in the dairy industry
False
In the sexually mature boar or bull ___ is the site of sperm Nell maturation and storage in the testicle
Epididymis
Factors affecting sperm production are numerous in animal production. Which of the followed factors would be considered an environmental factors that affects sperm production
A and C above
___ is the hormones secreted by the female reproductive tract that causes sexual excitability on cows, ewes, sows, etc.
Estrogen
___ is the reproductive technique or process used to allow the cow to produce more ova during the estrus cycle so that their cow in the herd can be mated to produce multiple embryos for embryo transfer
Superovulation
The anatomy and the ability to produce and offspring is quite different in birds as compared to mammals:
True
Reproductive efficiency is a trait of great economic importance in farm animal production. To increase performance you as a future manager of an animal production unit must:
A and B above
Your animal science instructor in a discussion about inducing the parturition process in domestic animals (cows, sows, does, etc.) indicated that women of child bearing age working in on a farm should never be allowed to handle the following product used in the parturition inducing process:
Lutalyse
Which of the following domesticated fame animals are known to be seasonally polyestrus?
Mare and ewe
What major hormone is produces by the cells of the Graafian follicle
Estrogen
In which of the following livestock industries is artificial insemination (AI) used the most?
Dairy Cattle Industry
Which one of the follows structures relaxes the sigmoidal flexure of the bull to straighten during mating and ejaculation
Retractor Flexure muscle
Examples of technological advances in reproduction
Timely AI procedures and Embryo Transplant
Function of Leydig Cells
Produce Testosterone
Function of epididymis
site and storage of spermatozoa (savings account)
The function of the ampulla
Important for bull rapid ejaculation (checking account)
The function of Vas Deferens
Tube that transports sperm cells from epididymis to urethra
Function of Bulbourethral gland
Secretes the gel portion of ejaculate
