Even More Past Questions Flashcards
Minimum temperature for heat treatment of soybean which increases the bypass protein from ruminant is:
150 C
Tests of heat treatment quality of soybean products include:
The protein dispersibility and solubility index
The urease activity of trypsin inhibitor
Urea:
Can be applied as a source of NPN to corn silage during the ensiling process in the concentration 0.5%
Lipase is present in the calf saliva until:
3 months of age
Energy requirements in dairy cows are expressed as:
NEL
Principal reason of use of urea in daily ration of cattle:
Daily ration low in natural protein
Sucrose is digested by calf in period of pre-ruminal digestion:
Badly
1st phase of lactation lasts:
10 weeks
2nd phase of lactation lasts:
10 weeks
3rd phase of lactation lasts:
More than 15 weeks
Dairy cow will reach the peak of lactation:
1st phase of lactation
Recommended protein concentration in dry matter of daily ration of lactation cows in 2nd phase of lactation is:
13-15%
Recommended energy concentration in daily ratio of lactation of cow in 2nd phase of lactation:
6.6-7.3 MJ/kg of DM
Level of nutrition in 2nd phase of lactation is:
Very high to high, 2.1-3 x that of maintenance
Recommended dry matter ration from forage and concentration in the 1st phase of lactation is:
60:40
Recommended dry matter ration from forage and concentration in the 2nd phase of lactation is:
70:30
Recommended dry matter ration from forage and concentration in the 3rd phase of lactation is:
90:10
Recommended dry matter ration from forage and concentration in the dry period is:
80:20
Recommended crude fibre content in dry matter of dairy ration for lactation cow in 1st phase
17:18
Recommended crude fibre content in dry matter of dairy ration for lactation in 3rd phase:
24-28%
Recommended crude fibre content in dry matter of dairy ration for lactation cow in dry period:
24-48%
Characteristics of 1st phase of lactation:
Rise and peak of lactation and negative energy balance
Characteristics of 2nd phase of lactation:
Rise and peak of dry matter intake
Characteristics of 3rd phase of lactation:
Decline and end of lactation
Dry period:
Period of 60 days before the next lactation
Recommended energy concentration in daily ration of cow in dry period:
4.3-6.1 MJ/kg of DM
Calf nutrition is period:
From the birth to 6 months of age
The aim of heifer nutrition is:
Optimum body development
Time when heifer breed depends on:
Their body weight
Daily ration of heifer nutrition of about 6 months of age will be:
Minimal amount of high moisture forage
Use of concentrate in daily ration of heifer older the 1 years is:
Not necessary when good quality forage will meet the requirements of animals
The aim of nutrition of young bulls is:
To reach the highest daily weight gain possible
Weight gaining of young bulls from weaning to 12-15 months of age is:
At least 1.25kg/day
