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U4 Livestock Reproduction
By Taylor Bryant
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Last updated over 5 years ago
43 questions
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What is conception?
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How much more will Bull B weight at birth than Bull A?
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How much more will Bull A weight at weaning than Bull B?
Question 41
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Question 43
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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
Stress
Growth
Reproduction
Lactation
All of the Above
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)
Estrus Phase
Progesterone Phase
Follicular Phase
Luteal Phase
Prostaglandin Phase
What are the factors to determine bred maturity?
Physical Size
Vulva Size
Age
Testicle Size
Breed Standards
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.
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
