EGG PRODUCTION ( role of hormones) Flashcards
Egg production is controlled by the following HORMONES.
- follicle stimulating hormone (PSH)
- luteinizing hormone (LH)
- estrogen
- androgen
- parathyroxine
- oxytocin
when the chicken is approaching the age of sexual maturity, the FSH, from the anterior lobe of the pituitary gland causes the ovarian follicle and ova to grow.
Follicle Stimulating Hormone (FSH)
after a certain period when the ovum has reached its ovulatory size, the IH, from the pituitary gland is released causing the rupture of the follicle releasing the ovum. this referred to as ovulation
luteinizing hormone (LH)
prior to ovulation, durian follicle produces estrogen it is responsible for the following;
a. enlargement off the oviduct to its functional size
b. spread of the pubic bones
c. enlargement of the vent
d. mobilization of depot of “fat for yolk formation” and “calcium for the shell formation”
prior to ovulation
estrogen
necessary for albumen secretion and is produced from the interstitial tissue of the ovary
androgen
from the parathyroid gland, is responsible for shell formation
parathyroxine
coming from the pituitary gland, it urges the chicken to lay the fully formed egg
oxytocin
hormones which has indirect effect on egg production
thyroxin and prolactin
causes molting
thyroxin
secreted from the anterior lobe of the hypophysis is the controlling factor in broodiness
prolactin
Care of Eggs
- gather egg frequently, atleast 3x a dat
- use a clean receptacle with ventilated sides and bottom
- place eggs in basket carefully
- never fill the basket more than three fourths full
- place basket of eggs into cool, humid storage room
- don’t pack eggs in case until nest or laying temperature is reduced to storage room temperature
