73. Hatchery operations does not include :
(^) Dubbing (2) Sexing
(C) Setting ) Brooding

74. Culling should be practiced in:
(^) Chicks and layers (B) Growers and breeders
(C) Both (A) and (B) ൯൩) None of these

75. How can you reduce the summer stress in a deep litter poultry house?
(6). 59789 cool and clean water in shed
Gi) Reduce thickness of built up lifter
(111) Give ascorbic acid supplement
(¢) Only 0) and (ii) (B) Only ©) and (iii)
(C) Only (ii) and (iii) (D) Allof these (i), (ii) and (iii)

76. The easiest method of mating used in breeder chicken when pedigree records are not kept :
(4) Flock mating (B) Stud mating
(C) Artificial insemination (D) Pen mating

77. Regarding nutritional value of egg :
(A) Tinted egg is better than white shelled egg
(B) Brown shelled egg is better than tinted egg
(C) Both of these
(D) None of these

78. The transparent membrane enclosing the yolk of egg :
(A) Chalaziferous layer ൯ Vitelline membrane

(C) Follicular membrane (D) Cuticle

79. Hatching eggs may be candled before incubation to find out the following except :
(^) Blood spot ൯) Infertile egg
(C) ൧ cell depth (D) Albumen quality

80. Which is not true regarding the physical requirements for incubation of chicken egg?
(A) Temperature in setter 98.5°F
(B) Humidity in hatcher 65 — 75%
(C) Carbon dioxide level in setter below 0.5%
(D) The eggs kept horizontally in hatcher

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