Overview of Reproduction in Domestic Animals Flashcards
progeny?
the young or offspring of an animal
biological efficiency influenced by?
reproductive efficiency
lactation ability
growth and development
replacement rate and longevity
what is biological efficiency changed by?
breeding
nutrition
environment
health and behaviour
sexual reproduction?
fusion of the haploid genetic complements from 2 distinct gametes (ovum and spermatozoon) at fertilisation to form the genetic basis of a novel individual
Dioecious?
animals which exist as one of two sexes
male gametes?
spermatozoa from testes
female gametes?
ova from ovaries
sexually dimorphic?
primary sexual characteristics: gonad & gamete types
Secondary sexual characteristic: Overall appearance and behaviour
SRY gene codes for?
testes determining factor -> directs development of the indeterminate gonad
mullerian duct?
develops into female reproductive organs
AKA Paramesonephric duct
wolffian duct?
develop into male reproductive organs
AKA mesonephric duct
what are the three types of somatic cells in the indifferent gonad (as well as germ cells)?
supporting cells
endocrine cells
connective tissue cells
supporting cells?
arise from the primitive sex cords
endocrine cells?
differentiate to produce gonadal steroids
connective tissue cells?
structural framework of the gonad
What part of the brain is required - what makes up the reproductive control centre?
pituitary gland
pineal gland
hypothalamus
GnRH?
Gonadotrophin Releasing Hormone
LH?
lieutenising hormone
FH?
follicle stimulating hormone
HPG?
hyppthalamus pulse generator
alpha fetal protein?
stops surge centre developing as aFP binds to oestrogen in females so the oestrogen can’t get through membrane to get to brain
