Misc.

Question 0

generation interval of BUFFALOES

Answer 0

M 5 yrs

F 3.5 yrs

Question 1

generation interval of CATTLE

Answer 1

M 4.5 yrs

F 3 yrs

Question 2

generation interval of SHEEP & GOAT

Answer 2

M 4 yrs

F 2 yrs

Question 3

generation interval of POULTRY

Answer 3

M 0.7 yrs

F 0.6 yrs

Question 4

intensity of selection is decreased by selection for more than one trait and it is equal to __________ for each trait

Answer 4

1/square root N

Question 5

name two method of MEASUREMENT OF RESPONSE

Answer 5

CONTROL SYSTEM
STATISTICAL ANALYSIS(phenotypic & genotypic trend)

Question 6

name the 3 ways of CONTROL SYSTEM

Answer 6

• unselected(random bred) control population
• two way(bidirectional) selection
• repeat mating

Question 7

name 4 methods of STATISTICAL ANALYSIS(phenotypic & genotypic trend)

Answer 7

• estimation of phenotypic trend
• estimation of genetic trend
• enviromental trend
• genetic change by direct selection

Question 8

define CONTROL population

Answer 8

a population whose genetic value remains unchanged over generations

Question 9

unselected(randome bred) control population system is used in ________ species. WHY?

Answer 9

poultry

because it is easy to maintain control population

Question 10

formula for rate at which the homozygosity is increased

Answer 10

F=1/8M + 1/8F

Question 11

it is suggested that control population should contain _____ males & _______ females

Answer 11

25-50 males

50-100 females

Question 12

two way(bidirectional) selection is not feasible for LARGE LIVESTOCK? why

Answer 12

because the selection for DECREASED PERFORMANCE is not justified

Question 13

adjustment of AGE EFFECT OF DAMS is done in which method of CONTROL SYSTEM

Answer 13

Repeat mating

Question 14

repeat mating is more restricted to ______ and ______ species

Answer 14

poultry(for control population too)

pig

Question 15

advantages of REPEAT mating

Answer 15

• less expensive
• no problem of G x E interaction
• no porblem of POPULATION size

Question 16

the characters under selection are called

Answer 16

selection objectives

Question 17

simple method to calculate EXPECTED PRODUCING ABILITY was given by ______ called as_____

Answer 17

Lush

Most Probable Producing Ability(MPPA)

Question 18

expand EPD

Answer 18

Expected
Predicted
Difference

Question 19

name the scientist who noticed resistance to diseases among WHITE LEG HORNS

Answer 19

Hutt

Question 20

________ found out genetic variability in the occurance of certain disease in MURRAH buffaloes

Answer 20

Tomar

Question 21

3 ways to find individuals showing resistance to certain disease

Answer 21

• occurence in normal condition
• inoculation with pathogen
• using INDICATORS of disease

Question 22

animals prone to Str. Aglactiae has high proportion of ________ in teats

Answer 22

PALMITIC ACID

Question 23

animals resistant to Str. Aglactiae has high proportion of ________ in teats

Answer 23

myristic, palmitic and linoleic acid

Question 24

in cows resistant to MASTITIS, level of _______ & ______ were highest in lactosebum

Answer 24

LAURIC , myristic acid

Question 25

Name indictorof resistance of EYE CANCER in HEREFORD cattle

Answer 25

pigmented eyelids(solid ring of pigment around eye)

Question 26

indicator of resistance to PULLORUM DISEASE in chickens

Answer 26

have BETTER CONTROL to maintain their body temperature | raise temp. to 106 F by 6th day of hatching

Question 27

indicator of resistance to MAREK'S disease in birds

Answer 27

have RBC antigen B21

Question 28

birds susceptable to MAREK disease having _____ antigen on RBC

Answer 28

B19

Question 29

indictator of resistance to AVIAN leucosis in birds

Answer 29

lack antigen R1

Question 30

in selection for disease resistant, maximum selection is achieved when the proportion selected is ________ to the proportion of resistant individuals

Answer 30

EQUAL

Question 31

individual selection is also known as _________

Answer 31

PERFORMANCE TESTING

Question 32

expand PBV

Answer 32

probable breeding value

Question 33

formula of PBV

Answer 33

PBV=selection differential x heritability of trait

Question 34

the phenotypic value is poor indicator of B.V if Heritaiblity is _______

Answer 34

LOW

Question 35

methods of multi trait selection were given by

Answer 35

HAZEL & LUSH

Question 36

selection is practised for 1 trait at a time in ______

Answer 36

tandem selection

Question 37

least efficient method of multi trait selection

Answer 37

tandem selection

Question 38

expand ICL

Answer 38

independent culling levels

Question 39

ICL method involves selection of _______ traits at a time

Answer 39

two or more

Question 40

minimum standard in set in which method of mutitrait selection

Answer 40

ICL

Question 41

ICL is used for selection of cattle used in _______ purpose

Answer 41

SHOW

Question 42

for show purpose , ________ method of multitrait selection is used

Answer 42

ICL

Question 43

selection index method is aka

Answer 43

total score index

Question 44

in Total score method, how many triats are taken simultaneously

Answer 44

SEVERAL traits

Question 45

the advantage of index method ______ with the number of traits

Answer 45

increases

Question 46

selection index method involves the technique of _________

Answer 46

discriminant function

Question 47

discriminant function was developed by ________, used by _______ and applied to animals by ______

Answer 47

fisher smith hazel

Question 48

in estimating economic value , all traits are given +ve sign except ______ which is given -ve sign

Answer 48

AFC

Question 49

relative efficiency of index method increases with ________ when compared to tandem method

Answer 49

n

Question 50

relative efficiency of index method rises with _____ and fall with ______ when compared to ICL

Answer 50

increasing n | increasing i

Question 51

the superiority of index method rises with _____

Answer 51

Increasing n & i