U4 Livestock Reproduction

Posljednje ažuriranje over 5 years ago

43 questions

U4 Livestock Reproduction

Posljednje ažuriranje over 5 years ago

43 questions

Maturation of Sperm Cells take

10 - 15 Days

20 - 30 Days

40 Days

50 Days

What is the main purpose of the epididymis?

Create fructose

Create sperm cells

Maturation of sperm cells

Accessory Glands produce more than ____ of total ejaculation volume.

75%

85%

95%

In ejaculation volume, the seminal vesicles accounts for the production of

secretion of cleansing fluid

secretion of enzymes

secretion of fructose

In ejaculation volume, the prostate gland accounts for the production of

secretion of cleansing fluid

secretion of enzymes

secretion of fructose

In ejaculation volume, the cowper's gland accounts for the production of

secretion of cleansing fluid

secretion of enzymes

secretion of fructose

Which muscle is responsible for extending the penis

Sigmoid Flexure

Retractor Muscle

An Ovary produces ova or eggs at the following rate

50,000 - 150,000 a day

50,00 - 150,000 a month

50,000 - 150,000 a year

50,000 - 150,000 a lifetime

The Broad Ligament is responsible for

Controlling the muscle contractions of the vagina

Holding the reproductive track in place

Holding the ovaries in place

Which is not the purpose use of the uterus.

serve as a passageway for sperm cells to the egg

provides a barrier to the external environment

produce a histotroph

site of pregnancy

What organ is made of ringed tissue to serve as a receptacle for semen?

Cervix

Vagina

Vulva

What organ is the opening of the female reproductive tract

Cervix

Vagina

Vulva

The anterior pituitary gland regulates

The FSH regulates

Stress

Growth

Reproduction

Lactation

The LH regulates

Stress

Growth

Reproduction

Lactation

What is puberty

The stage during which the animal becomes sexually mature

The period in which the female is receptive to mating.

What is estrus?

The stage during which the animal becomes sexually mature

The period in which the female is receptive to mating.

What are the stages of estrus? (mark all that apply)

What are the factors to determine bred maturity?

What is conception?

Which best describes Natural Breeding?

Male animal copulates with female animal

Female releases many eggs during ovulation because of FSH injections

Semen is collected and stored

During estrus, previously collected semen is inserted into female reproductive tract

Eggs are fertilized by natural or artificial mating

After conception, embryos are collected from female and transferred to other females (recipients) for gestation

Which best describes Embryo Transfer?

Male animal copulates with female animal

Female releases many eggs during ovulation because of FSH injections

Semen is collected and stored

During estrus, previously collected semen is inserted into female reproductive tract

Eggs are fertilized by natural or artificial mating

After conception, embryos are collected from female and transferred to other females (recipients) for gestation

Which best describes AI?

Male animal copulates with female animal

Female releases many eggs during ovulation because of FSH injections

Semen is collected and stored

During estrus, previously collected semen is inserted into female reproductive tract

Eggs are fertilized by natural or artificial mating

After conception, embryos are collected from female and transferred to other females (recipients) for gestation

What is a Gene?

Unit of inheritance carrying traits inherited by offspring through reproduction

Genes are divided into sections

Component of the gene that controls inheritance

What is a DNA

Unit of inheritance carrying traits inherited by offspring through reproduction

Genes are divided into sections

Component of the gene that controls inheritance

What is a Chromosomes?

Unit of inheritance carrying traits inherited by offspring through reproduction

Genes are divided into sections

Component of the gene that controls inheritance

Which is not true about Chromosomes?

Found in the nucleus of cell

Carry the genes

Occur in singles

Dominant Genes

Gene that is overshadowed by a gene

One gene overshadows the other

Recessive Genes

Gene that is overshadowed by a gene

One gene overshadows the other

Homozygous

possesses both of the same genes

possesses the dominant trait phenotypically but genotypically contains one recessive gene.

physically will show dominant trait

TT or Tt or tt

Heterozygous

possesses both of the same genes

possesses the dominant trait phenotypically but genotypically contains one recessive gene.

physically will show dominant trait

TT or Tt or tt

Phenotype

possesses both of the same genes

possesses the dominant trait phenotypically but genotypically contains one recessive gene.

physically will show dominant trait

TT or Tt or tt

Genotype

possesses both of the same genes

possesses the dominant trait phenotypically but genotypically contains one recessive gene.

physically will show dominant trait

TT or Tt or tt

EPD

Based on a measurement of how well the bull’s offspring perform.

A measurement of genetic potential based on the performance of relatives.

Done from an ultrasound of the actual bull.

Based on how well the bull’s offspring have performed on the rail.

Performance-based

Based on a measurement of how well the bull’s offspring perform.

A measurement of genetic potential based on the performance of relatives.

Done from an ultrasound of the actual bull.

Based on how well the bull’s offspring have performed on the rail.

Carcass-based

Based on a measurement of how well the bull’s offspring perform.

A measurement of genetic potential based on the performance of relatives.

Done from an ultrasound of the actual bull.

Based on how well the bull’s offspring have performed on the rail.

Ultrasound

Based on a measurement of how well the bull’s offspring perform.

A measurement of genetic potential based on the performance of relatives.

Done from an ultrasound of the actual bull.

Based on how well the bull’s offspring have performed on the rail.

Culling

Should be culled from the herd based on the great productivity of their offspring.

Should be culled from the herd based on the poor productivity of their offspring.

How much more will Bull B weight at birth than Bull A?

How much more will Bull A weight at weaning than Bull B?

Which bull would be a better bull for heifers?

Male A

Male B

Which bull has a bigger Rib-eye Area?

Male A

Male B

Which bull has the largest Yearly Weaning Weight

Male A

Male B