Topic 4: Performance Flashcards Preview

ASCI 330: Poultry Management > Topic 4: Performance > Flashcards

Flashcards in Topic 4: Performance Deck (39)
Loading flashcards...
1

pre-slaughter trait

- livability
- live body weight
- feed efficiency
- lameness/foot pad scores

2

post-slaughter traits

- carcass weight
- muscle yield
- muscle quality

3

why i flock uniformity important

- easier to manage
- better performance
- highest profit for producer
- maintain animal welfare

4

factors that affect broiler management

- temperature
- air quality
- lighting
- nutrition
- stocking densities
- feeder/water space
- biosecurity

5

uniformity of breeder flock

- body weight targets
- sexual maturity
- nutrition
- environment

6

factors affecting hatchery management

- egg storage condition
-- temperature, pre-warming
-- length of time
-- handling
-- sanitation
- length of time in hatcher

7

uniformity is a good indicator of the production process:

- all technical and/or health problems impacts broiler uniformity at time of slaughter
- day old breeder up to broiler delivered to processing plant

8

disease

- any condition that results in deviation from normal function
- any abnormal condition that impairs bodily functions in an organism
- can be characterized by specific symtoms and signs

9

clinical disease vs subclinical disease

- a disease that has recognizable signs and symptoms
- a disease that lacks detectable signs and symptoms

10

animal health program goals

- reduce mortality & morbidity in disease poultry
- reduce poor performance
- reduce number culled
- reduce condemnations at the processing plant
- improve welfare and well-being

11

biosecurity procedures used to:

- prevent the introduction and spread of disease
- reduce the risk of exposure to pathogens to prevent the spread of diseases

12

occurs due to interactions among three primarily functions:

- agent
- host
- management/environment

13

list infectious agents:

- viruses
- bacteria
- parasites
- fungi

14

non-infectious agents

- chemical
- physical
- lack/excess of vitamins and minerals
- toxins

15

host factors

- breed
- age
- sex
- immune status

16

management & environment factors

- food quality
- lighting program
- air quality and ventilation
- water quality
- space and density
- sanitation
- vaccination & medication program
- season & geographic location

17

general signs of disease

- decreased feed and water consumption
- decreased production (poor growth, poor FCR)
- huddling
- depression
- runting/stunting; poor uniformity
- ruffled feathers
- coughing, sneezing, discharge, difficult breathing
- bloody or wet litter
- increased mortality

18

influenza A viruses are divided into 16 hemagglutinin (H1-16) and 9 neuraminidase (n1-9) subtypes. which of the following subtypes is most likely to cause a highly pathogenic form of avian influenza in poultry?

- H5N1 & H7N1

19

bronchitis

- viral disease of the upper respiratory tract

20

gumboro disease

- viral disease characterized by inflammation of bursa of Fabricius

21

infectiou laryngotracheitis

viral disease of the upper respiratory tract, characterized by bloody mucoid exudate in the trachea

22

newcastle disease

viral disease characterized by mild to severe respiratory and nervous signs and greenish watery diarrhea

23

marek's disease

highly contagious viral disease of poultry characterized by peripheral nerve enlargement

24

feed conversion ratio?

feed intake (g/d)/body weight gain (g/d)

25

avian influenza

- RNA virus (type A orthomyxoviruses)
- signs: respiratory and nervous signs, diarrhea, low feed intake, high mortality

26

viral arthritis

- lameness with swelling of tendon sheaths of shank
- increased mortality
- malpositioned feathers

27

bacterial diseases

- bacterial chondronecrosis w/ osteomyelitis
- femoral head necrosis
- foot pad dermatitis
- gangrenous dermatitis
- necrotic enteritis (NE)

28

viral disease

- avain influenza
- infectious bronchitis
- infectious bursal disease
- infectious laryngotracheitis
- marek's disease
- newcastle disease
- viral arthritis

29

femoral head necrosis & bacterial chondronecrosis w/ osteomyelitis

- lameness in broiler, turkeys
- bacteria include: staphylococci, E.coli, Streptococci
- hip joints, proximal tibiotarsus, proximal femur

30

foot pad dermatitis and causes

- characterized by inflammation and necrotic lesions on the plantar surface of footpads
- starts as erosion of skin, once skin broken, ulcers may develop
- caused by wet litter: footpad soften and become more prone to damage