the impact of nutriton on carcass quality
Download
Skip this Video
Download Presentation
THE IMPACT OF NUTRITON ON CARCASS QUALITY

Loading in 2 Seconds...

play fullscreen
1 / 46

THE IMPACT OF NUTRITON ON CARCASS QUALITY - PowerPoint PPT Presentation


  • 136 Views
  • Uploaded on

THE IMPACT OF NUTRITON ON CARCASS QUALITY. GENE PESTI 1 & JOHN DRIVER 2 1 UNIVERSITY OF GEORGIA 2 JACKSON LABORATORY USA. THE IMPACT OF NUTRITON ON CARCASS QUALITY. PROTEIN & ENERGY ON CARCASS LEAN & FAT INEXPENSIVE DIETS -> FAT CARCASSES DIETARY CU LEVELS CHOLESTEROL LEVELS IN MEAT

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' THE IMPACT OF NUTRITON ON CARCASS QUALITY' - cutter


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
the impact of nutriton on carcass quality

THE IMPACT OF NUTRITON ON CARCASS QUALITY

GENE PESTI1 & JOHN DRIVER2

1UNIVERSITY OF GEORGIA

2JACKSON LABORATORY

USA

the impact of nutriton on carcass quality1
THE IMPACT OF NUTRITON ON CARCASS QUALITY
  • PROTEIN & ENERGY ON CARCASS LEAN & FAT
    • INEXPENSIVE DIETS -> FAT CARCASSES
  • DIETARY CU LEVELS
    • CHOLESTEROL LEVELS IN MEAT
  • CALCIUM & PHOSPHORUS
    • MARGINAL LEVELS -> BROKEN BONES & BRUISES
from donaldson et al 19562
From Donaldson et al., 1956
  • Growth Not Related to C/P Ratio
  • No “Optimums” Evident
from donaldson et al 19563
From Donaldson et al., 1956
  • Carcass Composition fits C/P Ratio Well
  • No “Optimums” Evident
from donaldson et al 19564
From Donaldson et al., 1956
  • Carcass Composition Related to C/P Ratio
  • Carcass Composition Related to C & P Levels
pesti g m t s whiting l s jensen poultry science 62 490 1983
Pesti, G.M., T.S. Whiting & L.S. Jensen, Poultry Science 62:490 (1983)
  • Altering the form of the diet alters the carcass composition response to dietary energy
slide13

24% Protein

16% Protein

slide14

24% Protein

16% Protein

slide16

HMG-CoA reductase

  • REGULATES CHOLESTEROL SYNTHESIS
  • REGULATES FATTY ACID SYNTHESIS
  • IS COPPER SENSITIVE
copper status
COPPER STATUS

CHOLESTEROL SYNTHESIS

copper status1
COPPER STATUS

CHOLESTEROL SYNTHESIS

?

other known effects of dietary copper
OTHER KNOWN EFFECTS OF DIETARY COPPER
  • COPPER ACCUMULATES IN BONES
  • SOFT PORK IN SWINE
slide25

DIETARY CALCIUM & PHOSPHORUS AND CARCASS QUALITY

  • P IS EXPENSIVE
  • POTENTIAL POLLUTANT
  • NUTRITIONISTS MINIMIZE USE
  • Ca IS INEXPENSIVE
  • DECREASES FAT ABSORPTION
  • NUTRITIONISTS MINIMIZE USE
introduction
Introduction
  • A suitable combination of 1αOH-D3 (1A) and phytase in the diet could reduce requirements for both inorganic Ca and P sources
  • Implications:
    • Reduced P in excreta
    • Improved feed efficiency
    • Lower requirements of nutrients which interact with Ca and P
objectives
Objectives

To determine:

  • The feasibility of replacing a portion of dietary Ca and P with a combination of phytase and 1A under commercial grow-out conditions
  • Which phase of production is more responsive to the combination of supplements (Starter or Grower/Finisher)
objectives1
Objectives

To determine:

  • The feasibility of replacing a portion of dietary Ca and P with a combination of phytase and 1A under commercial grow-out conditions
  • Which phase of production is more responsive to the combination of supplements (Starter or Grower/Finisher)
  • The implications of Ca and P replacement in terms of carcass processing
materials and methods
Materials and Methods
  • Ca & P deficient (mash) diets were mixed:
    • Starter phase
    • Grower/Finisher phase
  • Diets were mixed with and without:
    • 1000 FTU/kg Natuphos Phytase (P)
    • 5mg/kg 1a-OH-cholecalciferol (1A)

P+ 1A

  • 5 Feeding Regimens were used
feeding regimens1
Feeding Regimens

PENS = 4

PENS = 4

PENS = 4

PENS = 4

PENS = 8

parameters measured
Parameters Measured
  • BWG, FI & FCR from 0 to 18 and 19 to 35 days
  • 10 birds were selected on days 18 and 35 and:
  • Left tibias were collected for % Tibia Ash determination
  • Right tibias were sliced and scored for incidence and severity of P & Ca rickets & TD
parameters measured1
Parameters Measured
  • Tibias snapped during evisceration
  • Broken clavicles
  • Bloody breast muscles
  • Broken femurs
results body weight gain 0 to 35 d
ResultsBody Weight Gain (0 to 35 d)

A

A

A

a

a

b

B

B

bc

c

a

a

a

b

b

0 to 18 d →

19 to 35 d →

results fcr feed to gain ratio
ResultsFCR (feed to gain ratio)

a

b

b

b

c

A

AB

AB

AB

B

a

b

b

a

b

b

b

0 to 18 d →

19 to 35 d →

results tibia ash at 18 35 d
Results% Tibia Ash at 18 & 35 d

a

a

a

a

b

c

cd

d

b

b

a

a

a

b

b

0 to 18 d →

19 to 35 d →

results phosphorus rickets at 18 35 d
Results% Phosphorus Rickets at 18 & 35 d

a

b

c

c

c

0 to 18 d →

19 to 35 d →

results broken tibias after evisceration
Results% Broken Tibias After Evisceration

a

ab

ab

b

b

0 to 18 d →

19 to 35 d →

results broken clavicles after de boning
Results% Broken Clavicles After De-boning

a

a

a

ab

b

0 to 18 d →

19 to 35 d →

results bloody pectoralis minor after de boning
Results% Bloody Pectoralis Minor After De-boning

a

a

ab

ab

b

0 to 18 d →

19 to 35 d →

results broken femurs after de boning
Results% Broken Femurs After De-boning

0 to 18 d →

19 to 35 d →

conclusion
Conclusion
  • The P+1A combination was required only during the Starter Phase to optimize BWG and FCR and eliminate bone disease
  • Feeding P+1A at the very low levels of dietary Ca and P used was not sufficient to obtain maximum bone ash or prevent allbones from breaking during processing
implications
Implications
  • The combination of 1A and Phytase is a very promising alternative to inorganic Ca and P sources.
  • The value of both supplements depends upon their price and availability as well as dietary levels of Ca and P and Phytin P
  • Future testing should be conducted to determine how much dietary Ca and P can be replaced by the combination of these two supplements
summary
SUMMARY
  • CARCASS LEAN MEAT YIELD IS RELATD TO
    • CARCASS LIPID LEVELS
    • PROTEIN LEVEL
    • ENERGY LEVEL
    • FEED FORM
  • IF ENERGY BECOMES SCARCE & PROTEIN ABUNDANT, THE PROBLEM OF FAT CARCASSES MAY TAKE CARE OF ITSELF
summary1
SUMMARY
  • CARCASS LIPID PROFILES CAN BE EASILY INFLUENCED:
    • DIETARY FATTY ACIDS
    • FEEDING PHARMACOLOGICAL LEVELS OF CU
  • DIETARY MINERALS ARE BECOMING VERY EXPENSIVE
    • REMEMBER TO EVALUATE CARCASSES WHENEVER EVALUATING MINERAL LEVELS
ad