Poultry A26-35 Flashcards
what do birds eat
seeds
how to increase feed intake in birds
make feed look like seeds
what are ducks beaks good for
filtering water but not picking up solid feed
how to geese feed
grazing
saliva in poultry
v small amounts
function of gizzard
grinds feed into smaller pieces
what type of food grind food
grits
transit time of birds
small intestine is small so short trasnit time
low time for absorb[ption
why can antinutritives be digested
amylase cant break bonds
viscosity of small intestine
high in narrow lumen so antinutritives bind to water soluble nutrients
vitelline diverticulum
former yolk sac
vitelline diverticulum
former yolk sac
caecum of birds
v small
only 10% of feed ends up there
feed energy to protein ratio
60-70% energy
30-40% protein
essential FA in birds
linoleic acid
deficiecny leads to decreased growth and skin problems
function of mash
decrease feed intake
ideal feed for young birds
crumbles
cereals for birds
corn
wheat
barley
orat
legumes for birds
field peas
horse bean
lupin
soybean
extracted meals for birds
soybean meal
extracted sunflower meal
extracted rapeseed
function of dilution of energy density
to avoid fast growth
bw at hatching of broilers
40g
bw at broiler slaughter
2.7kg
how long does fattening take
5-6weeks
fattening methods of broilers
- semi intensive method
- intensive fattening
semi intenstive method
fattening in 2 phases
intensive fore rearing - 0-18days
extensive post rearing from day 19 to slaughter
intensive fattening
1 phase
protein building requires less energy
fat building requires x2 energy required for protein building
where is fat stored in broilers
in stomach
v. wasteful
feeding of broilers first 2-3 weeks
muscle buidling at first hten fat building
starter of broilers duration
day 0-10
starter of broilers energy
ME= 12.6mj/day
starter of broilers cp
23%
grower of broilers duration
day 11-24
grower of broilers energy
13MJ/day
grower of broilers cp
21.5%
finisher of broilers duration
25 days until slaughter
finisher of broilers energy
13.4mj/day
finisher of broilers cp
19.5%
why does cp reduce with age
protein inbuild decreases with ages
feed of efficiency of broilers
1.6kg/kg
protein sources for broilers
cereals
legumes
supplements
physical forms of newly hatched broilers
homogenous diet = crumble
why is pellet good
for enhancing feed intake
supplements for broilers
lysine
methionine + cysteine
linoleic acid and calcium
rda of water in broilers
2-2.5L/kg
what is a pullett
from hatching to egg production
starter for layers duration
0-8weeks
starter for layers CP
17%
grower for layers duration
8-17 weeks
grower for layers CP
15%
ME of layers
11.7MJ/kg
why is cp reduced
to delay sexual maturity and increase egg production
feed of 0-3 week layers
ad lib mash
feed of 4-8 week layers
if low bw then give pelletts
if high bw give unchanged daily feed
feed of 9 weeks
650-700g
starter for layers duration
0-7 weeks
grower for layers duration
7-17 weeks
prelayerfor layers duration
17-21 weeks
layer 1 duration
21-63 weeks
layer 2 duration
63-77weeks
egg size of layers
60g
no of eggs per year in layers
320-350g
level of egg production at 18 weeks
5%
level of egg production at 20 weeks
10%
level of egg production at 21-23 weeks
20-50%
level of egg production at 24-26 weeks
95%
level of egg production at 65-76 weeks
75%
prelayer feed ME
12mj/kg
prelayer feed CP
16%
prelayer feed Ca
18g/kg
layer 1 feed ME
12mj/kg
layer 1 feed CP
18%
layer 1 feed Ca
36.5g/kg
layer 2 feed ME
11.5mj/kg
layer 2 feed CP
16%
layer 2 feed Ca
37.5g/kg
why increase Ca
due to increasing size of eff
diet of layers
ad lib
mash is retricted
grits used for grinding
feed efficiency of layers
2kg/kg egg
light program for pulllets
reduce or keep the same
never increase
hens light program
increase of keep the same
never reduce
bw at hatching of turkeys
60g
turkey hens bw at slaughter
10.5kg
toms bw at slaughter
21.5gk
starter 1 for turkeys duration
0-4weeks
starter 1 for turkeys ME
12.2mj/kg
starter 1 for turkeys cp
28%
starter 2 for turkeys duration
5-8 weeks
starter 2 for turkeys ME
12.8 mj/day
starter 2 for turkeys cp
26%
grower 1 for turkeys duration in toms
9-12 weeks
grower 1 for turkeys duration in hens
9-11 weeks
grower 1 for turkeys ME
13.4mj/day
grower 1 for turkeys cp
22%
grower 2 for turkeys duration in toms
13-16weeks
grower 2 for turkeys duration for hens
12-15 weeks
grower 2 for turkeys me
13.6mj/day
grower 2 for turkeys cp
20%
fattener for turkeys duration
toms only
17-20weeks
fattener for turkeys me
14mj/kg
fattener for turkeys cp
17%
aim of feeding turkeys
good quality breast and ham
proportionate breast - 35%
supplements of turkeys
lysine
vit d
biotin
function of lysine in turkeys
meat production
what does biotin prevent
leg problems
how long do flock replacement turkeys grow for
29weeks
starter in breeding turkeys duration
week 0-4
starter in breeding turkeys cp
26%
starter in breeding turkeys Ca
15g/kg
starter in breeding turkeys Ca
15g/kg
starter in breeding turkeys P
7.5g/kg
grower 1 in breeding turkeys duration
week 5-8
grower 1 in breeding turkeys cp
23%
grower 1 in breeding turkeys Ca
14g/kg
grower 1 in breeding turkeys P
7g/kg
grower 2 in breeding turkeys duration
9-12 weeks