economic traits of cattle and buffalo Flashcards
purpose of record keeping
- *know the pedigree and history
- *compare herd performance
- **breed comparison
use of record keeping
- **animal pricing
* **breeding value estimation
types of records are
- **pedigree registers
- **birth register
- ***growth register
- **daily treatment register
- **livestock register
types of records 2
daily milking register
milk feeding register
feed and fodder register
**sale /mortality register
pedigree register is for
- **info about breed /genetic number
- **dam and sire number
- **grand dam and grand sire number
birth register is for
***dob
sire and dam number
birth weight
calf number and sex
daily treatment register is for
number of animals which are sick
**names of disease
daily milking register for
amount of milk produced by each cow in morning and evening
standardisation of records
***some records are excluded before statistical and genetic analysis
**incomplete records
milk records
abnormal calving milk records
two types of traits
- ***directly measurable/observable traits
* ***generated traits
directly measurable traits
**body weight
**birth weight
**sex
body measurements
**litter size
***egg production
generated traits
most are economic traits
**generated from pedigree registers
economic trait**growth rate??
***percent change of body measurements within a specific time
buffallo growth rate
**1 to 1.3 kg/day
cattle growth rate
500-600g/day
age at sexual maturity
DATE of birth to date of first heat
approx 20 months
age at first calving
dob to date of first calving
cattle——32-34 months
afc in buffalo—-36-40months
post partum breeding interval
from calving to date of first heat
ppb in cattle
45 days
ppb in buffalo
63 days
service period
date of calving to date of successsful AI
service period in cattles
SP :145-150 days
service period in buffaloesgestation peri
120 to 150 days
gestation period
date of conception to date of calving
