advances in broiler breeder modelling

Download advances in broiler breeder modelling

Post on 07-Jan-2017

975 views

Category:

Career

8 download

Embed Size (px)

TRANSCRIPT

Broiler Breeder Nutrition Issues

Current Advances in Broiler Breeder Modeling Research: a North American PerspectiveMartin J. Zuidhof1R. A. Renema, and A. Pishnamazi

AMEVEABogot, ColombiaApril 18-19, 2012 1 martin.zuidhof@ualberta.ca

www.poultryresearchcentre.ca

1

1957 broiler1977 broiler2005 broiler

Why are Broiler Breeders Difficult to Manage?

2

3

The Nutritionists GoalMatch nutrient supply to nutrient requirements

The Organisms GoalTo feel good and be productive

Feel good = f(eat, not eat)Feel good = f(health, fitness, environment, luxury, scarcity,)

Properly fed

UnderfedOverfed

Breeder:Broiler BW ratio* from 1979 to 2005Renema et al. 2007. WPSJ 63:457-472.*6 wk of age

6

Uniformity Issue: Competing for a limited resource

Photo courtesy Philippe Dufour, Cobb-VantressBroiler breeder feeding time - Brazil

7

Uniformity at PhotostimulationReady Set GO!

8

Experimental Design9TreatmentDietFormME (kcal/kg)CP (%)FrequencyControlStandardMash2,86515.0DailyFiber Dilute 25% Oat HullsMash2,20011.4DailyScatterStandardPellet2,86515.0DailySkip-a-DayStandardMash2,86515.0Alternate DaysSortedStandardMash2,86515.0Daily

9

10

SourceProbabilityTreatment

Recommended

View more >