Small Ru A20-23 Flashcards
goals of sheep nutrition
increase reproduction
rearing of lambs
milk and meat production
DM of lambs
2.5-6kg/100kg bw
CF of lambs
15-20%
NEm of lambs
0.31MJ x bw ^0.75
MP of lambs
2.6g x bw^0.75
minerals of lambs
Fe
Mn
Zn
I
Cu
Se
important vitamines for mothers
a
Important vitamins for suckling lambs
e
duration of pregnancy in ewes
136-155 days
duration of lactation ewes
3-4months
ovarian cycle of ewes
16days
bw at birth lambs
2.5-6kg
age at weaning lambs and bw
30-40days
12-15kg
age of inseminartion lambs
3-4months
flushing in ewes
2-3 weeks prior to mating
roughage +0.3concentrates + P + carotene
when to give excess concentrates to ewes
flushing
last 6 weeks of pregnancy
milk production
energy requirement of ewe month 4 of pregnancy
+30% of NEm
energy requirement of ewe month 5 of pregnancy
+50% of NEm
concetrates to give 6 weeks prior to partuition
0.3-0.5kg
during lactation CF
18-23%
concentrates to give during lactation
0.2-0.3 conc and hay
when is there a -ve energy balance in ewes
last 3-5weeks of lactation
ewe milk composition DM
200g/kg
ewe milk composition fat
80g
ewe milk composition protein
60g
feed 1 week prior to weaning in lambs
no concentrates for ewes
feed 1 day prior to weaning in ewe
no feed and water
feed after weaning in ewes
water and roughage
bw gain of natural lamb rearing
200g bw gain/kg ewes milk
natural lamb rearing feed from 2 weeks
good quality grass hay
natural lamb rearing from 4-6 weeks
0.3kg starter and 0.2kg hay
what breeds to do artifical lamb rearing methods
in breeds of high reproduction
what to give for artificial lamb rearing adter colostrum
homogenised and milk replacers ad lib
fattening of suckling lambs
until age 8-9months
14-18kg
fattening of express broiler lambs
from weaning –> 120-130days
28-35kg bw
200-350g/day gain
growing lambs of high bw
weaning at 3months
give high level of roughage and hay and concentrates
bw 40-50kg
daily gain of growing ewes with high bw
100g/day