HATCHING EGG

high total egg production, high total hatching egg, high DOC or clean chicks

Breederman Goals

chalazae

internal suspension system anchoring the yolk

albumen

protective protein cushion for the yolk

cloacal kiss

mating via cloaca contact, lasting just few seconds

177

number of top quality eggs expected from a hen

shell, membranes, air cell, chalazae, yolk and germinal disc, albumen

Anatomy of eggs

• thick white spot (2-3 mm)

• jagged, irregular edges

• slightly bubbly appearance

infertile blastodisc

• tthe donut shaoe

• round white spot (4-5 mm)

• symmetrical with a small circle in the middle

fertile blastoderm

weight: 52-68 grams

shell: intact, clean, smooth

shape: uniform with round and pointed ends

status: fertilized

exception: soiled settable = max allowance 15% of surface area and must be separated

Class A specification for egg

smaller chick = hotter temperature

younger parent = smaller chick

NOTE

high total dirty eggs, high total cracked eggs, toe punched

rejects

blood stained, dirty (more than 15%), fly marks, mildew (amag)

rejects: dirty

wrinkled, slab-sided, elongated, rounded, rough shell, pimpled egg, thin shelled, shell less, peewee, double yolk

rejects: deform

10% = 10 female
9% ratio = 1:11
8% ratio = 1:12.5

percentage of male in flock, assuming 1000 females.

after 19 weeks, tsaka lang tinetrain to lay eggs
ratio of perch:

1 hole - 4-5 eggs

notes

contaminated eggs

• penetration via pores

• dirty hands transfer microbes

• rotten eggs = farm loss

Wash - before collecting eggs, after collecting floor eggs, whenever hands are dirty

sanitize - after washing, after each round of collection (limit 2-3x), and after touching slightly dirty materials

Defense Protocol: Personal Hygiene

defense: daily maintenance

• clean nest tops and interiors daily

• wash grass pads weekly

• manage litter to prevent wet droppings

Defense Protocol: The Environment

• never mix dirty/floor eggs with nest eggs

• sort immediately and use clean trays

Defense protocol: collection

containment - disinfection - safe storage

Defense Protocol: Storage & Disinfection

Troubleshooting: Low Recovery Rates

• hatching eggs are exposed to direct sunlight and rain

• inappropriate egg storage condition

• wiping of eggs

egg handling (avoid)

52 - 68 grams

standard egg weight

allow for gas exchange, taking in oxygen and releasing waste products like CO2 and moisture

what is the function of the tiny pores found in an eggshell

air pocket gets larger as the egg ages due to the contraction of contents during cooling and moisture loss

why does the air cell of an egg increase in size over time?

chalazae

what are the twisted strands of mucin fibers that suspend the yolk in the center of the egg called