ANSC 44500
COMMERCIAL POULTRY MANAGEMENT

Exam 2

(48 points) Multiple Choice. Enter the letter of the correct answer in the blank. Each correct response is worth 3 points.

1) Corn gluten, fish meal, and/or soybean meal are typically added to poultry diets as an excellent source of

a) fat
b) carbohydrate
c) protein
d) xanthophyll
e) riboflavin

2) Antibiotics can be used to treat for all of the following diseases except

a) Fowl cholera
b) E. Coli infections
c) Staphylococcosis
d) Streptococcossis
e) Avian adenovirus infections

3) An example of a protozoa causing disease is:

a) Leucocytozoon Infections (turkey malaria)
b) Hexamitiasis
c) Blackhead
d) Coccidiosis
e) all of the above

4) A disease in which poor quality fish meal is fed to birds causing ulcers of the gizzard is called:

a) black vomit
b) blackhead
c) avian encephalomyelitis
d) alcaligenes rhinotracheitis
e) erysipelas

5) The form of feed most commonly fed to laying hens is:

a) mash
b) crumbles
c) pellets
d) all three forms are commonly fed to laying hens, so there is no preference
e) b and c

6) Turkey breeder hens are subject to which one of the following feed restriction programs:

a) skip-a-day beginning at 2 weeks post-peak production
b) a 25 to 30% reduction in feed intake on a limited feed per day basis beginning at 2 weeks post-peak production
c) a mild feed restriction program in which a low protein (10.5% CP) holding ration is fed ad libitum from 19 to 25 wk of age,
d) restricted feed intake (10% restriction) during the first part of grow-out from3 to 18 wk of age)
e) none of the above

7) A trace mineral mix in poultry rations may contain all but one of the following:

a) manganese
b) zinc
c) copper
d) sodium chloride
e) selenium

8) Plant phytate is a problem with this particular mineral.

a) calcium
b) sodium
c) potassium
d) sulfur
e) phosphorus

9) Dehydrated alfalfa meal and marigold petals are examples of feed ingredients containing xanthophylls that are often in demand for their

a) growth promoting abilities
b) yellow pigmentation deposited in the skin or egg yolks
c) anti-coccidial effect
d) antibiotic effect
e) pellet binding capabilities

10) The only internal organ that does not have to be removed from broilers during processing in the United States is/are the

a) testes or ovaries
b) kidneys
c) esophagus
d) preen gland
e) lungs

11) An example(s) of pellent binders is/(are)

a) ethoxyquin
b) butylated hydroxy toluene
c) sodium bentonite
d) cellulose
e) c and d

12) An egg whose yolk outline is indistinct and has a small air cell less than 1/8 inches in depth during candling is graded as what quality egg?

a) AA
b) A
c) B
d) C
e) loss

13) The most common method to an induce a molt is to

a) feed high levels of toxic nutrients such as I, Zn, or Cu
b) inject hormones such as LHRF (Luteinizing Hormone Releasing Factor)
c) feed and light restriction
d) feed low nutrient levels such as low salt or calcium
e) water restriction only

14) A disease often found in fighting toms caused by a bacteria that can cause tough leathery skin, and inflamed snood, but can be prevented by desnooding, beak trimming, and vaccination is called

a) Fowl pox
b) Lymphoid leukosis
c) Hemorrhagic syndrome
d) Erysipelas
e) Avian encephalomyelitis

15) Caponized broilers sometimes develop air puffs. These are

a) caused by air accumulation under the skin
b) should be treated by pricking the skin with a needle or knife and pressing out the air
c) can devolpe in some birds a week to 10 days following surgery
d) all of the above
e) none of the above

16) The respiratory tract is infected with this disease:

a) coccidiosis
b) omphalitis
c) staphylococcosis
d) laryngotracheitis
e) cage layer fatigue
 

II. (36 points) Provide short answers to the following questions.

1) From the egg quality lab, identify the difference between a check and a leaker. Explain what a "body check" egg is?

2) Why do poultrymen collect blood samples from birds?

3) An acceptable uniformity for body weights among pullet flocks is that "80% of the individuals should be within ± 10% of the flock average." If the body weights of a pullet flock average 1.25 pounds at 7 wk of age, give the weight range (in pounds) that would be acceptable for 80% uniformity.

4) Why is duck processing more difficult and time consuming than processing broilers?

5) Sexually mature broiler breeder males and females are fed different diets. Identify at least one difference between the male and female breeder diets.

6) Natural mating is used in the production of fertile broiler eggs. If broiler breeder males and females are raised together, how do they keep the males and females from eating each other s diets? Identify three methods that poultrymen use to feed the sexes separately even though they are in the same pen.

7) Why are laying hens "phase fed" during egg their egg production cycle?

III. (16 points) Discussion: Use your excellent writing skills in discussing the answer to the following question.

You are the owner of a commercial strain of White Leghorns. You have decided to force molt your flock after 12 months of production. Assuming that your force molting program is successful and that your flock is healthy, what do you expect your flock’s performance will be during the second cycle as compared to the first cycle? Be sure to include in your performance evaluation such traits as rate of lay, mortality, egg size, feed consumption and conversion, and shell quality comparisons.

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