Sardar Krushinagar Dantiwada Agricultural Uiversity Health and Wellness P.G. Semester End Examination Question Paper University model question papers



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Posted Date: 30 Jul 2011      Posted By:: Dr. Ashish C Patel    Member Level: Gold  Points: 5 (₹ 1)

2009 Sardar Krushinagar Dantiwada Agricultural Uiversity Health and Wellness Bachelor of Veterinary Science & Animal Husbandry P.G. Semester End Examination Question Paper University Question paper



Course: Bachelor of Veterinary Science & Animal Husbandry   University/board: Sardar Krushinagar Dantiwada Agricultural Uiversity








SEMESTER END EXAMINATION

DAIRY CATTLE BREEDING-II
(AGB-816)
Marks:50


Q.1.a.Write in brief on any three of the following (6)

1.Pedigree selection 2.Linebreeding
3.Heterosis 4.Grading up

b.Describe in brief the field progeny testing programme for dairy sire (4)

Q.2.a.What is the genetic and physiological basis of inbreeding depression. (4)

b.Describe in brief the effects of inbreeding in dairy cattle. (6)

Q.3 Discuss in detail the breeding policy of India for dairy cattle
with special reference to Gujarat. (10)

Q.4.a.State true or false (5)
1.Intersemating in dairy cattle results into loss of heterosis.

2.Fullsib mating increases the inbreeding coefficient by 50%in
one generation.

3.Relationship between first cousins is 12.5%.

4.Individual selection in dairy sire is recommended when the heritability of
milk yield is 0.90.

5.The intensity of selection increases when animals culled increases.

6.Family selection is preferred for selecting animals at an early ages
for traits expressed after sexual maturity.

7.The accuracy of estimating breeding value of a sire increases by decreasing
the number of progeny per sire.

8.The use of multiple record is recommended when repeatability of a trait
is 0.01.

9.The age at first calving is a repeatable trait in dairy cattle.

10.An individual is related to its grand parent by 50%.

b.Define/explain in one or two sentences. (5)
1.Epistasis 2.Inbred line 3.Selection intensity 4.Repeatability
5.Interbull 6.Herdmate 7.Topcrossing 8.Outcrossing
9.Tandem selection 10.Intersemating

Q.5.Give formulae for the followings:- (10)

1.Contemprory daughter average index.
2.Krishnan's index
3.Genetic gain per year.
4.Relationship coefficient when both the individuals are inbred.
5.MPPA of a cow.





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