Broiler Breeders - Lecture Notes Review (copy)

Broiler

Chickens raised primarily for meat production.

Broiler Breeder

The parent chickens of broilers that lay hatching eggs.

Primary Breeder Companies

Entities that own grandparent, great-grandparent, and pedigree lines selected over years for marketable traits.

Genetic Hierarchy

The levels of genetic stock including Integrator, Primary Breeder, Pedigree Elite Stock, Great Grand Parent Stock, Grand Parent Stock, Parent Stocks, and Broilers.

Female Lines

Genetic lines for female broilers, such as Ross 708, Ross 308, and Cobb 500.

Male Lines

Genetic lines for male broilers, such as Yield Plus (YP) and Efficiency Plus (EP).

Hybrid Vigor

The phenomenon where offspring exhibit superior traits compared to the average traits of the parents.

Terminal Strain Cross

Refers to a type of hybrid vigor in broiler chicks resulting from a four-way cross of genetic lines.

Pullet

Immature female chicken.

Cockerel

Immature male chicken.

Hen

Mature female hen that has laid eggs previously or is actively laying.

Rooster/Cock

Mature male that has produced or is producing semen.

Replacement Flock

New flock of pullets set to replace older hens on a breeder farm.

Placement

Introduction of new breeder chicks into the pullet house for rearing.

Feed Restriction Programs

Management practices aimed at maximizing egg and chick production while reducing metabolic disorders.

Weight Management Techniques

Strategies for monitoring and managing the weight of broiler breeders to ensure growth and production goals.

Photostimulation

Application of extended daylengths to activate reproductive behaviors in chickens.

Nesting Requirements

Essential needs for hens to have secure nesting areas to lower egg damage or contamination.

Breeder House

Housing for pullets and cockerels with stimulated daylength conditions.

Laying Phase

The transition period for broiler breeders to layer houses occurring at 18-21 weeks.

Performance Metrics

Primary performance goals for breeders including fertility rate and hatchability rate.

Artificial Insemination

A method used to breed chickens that can improve fertility rates and reduce female damage risks.

Growth and Production Figures

Statistics on bird production over the years, highlighting significant increases in quantity.

Selection Criteria for Breeder Lines

Criteria used to select male and female lines based on growth, meat characteristics, and reproductive traits.

Brooding Phase

The initial phase in rearing where chicks are kept in optimal conditions for development.

Whole House Brooding

A brooding method where the entire barn is maintained at a uniform temperature.

Spot Brooding

A brooding method focused on localized heating for optimal chick comfort.

Lighting Management

Control of daylength during rearing phases to influence sexual maturation and performance.

Mortality Rates Throughout Breeder Production

Rates of mortality experienced during rearing and laying phases.

Feeding Practices for Broiler Breeders

Strategies for feeding broiler breeders, including phases and restrictions.

Breeder Diets

Formulas provided to broiler breeders from 24 weeks onward.

Monitoring Feather Condition

Assessing female feather loss to determine mating activity or nutrition imbalances.

Assessing Male Condition

Evaluating males based on keel bone prominence and breast condition for health assessment.

Feed Distribution Practices

Management practices ensuring uniform productivity among sexes at feeding stations.

Environmental Factors

Critical influences such as lighting, nutrition, and health that impact breeder goals.

Flock Grading

Management practice to separate birds not meeting target weights to ensure effective growth.

Broiler Breeder Management Goals

Objectives including health maintenance, high production of fertile eggs, and economical feed consumption.

Critical Factors Influencing Breeder Goals

Aspects such as environment, lighting, nutrition, and genetics that affect breeding success.

Implications of Feed Restriction

Effects of controlled feeding on fertility, mortality rates, and overall production.

Sexual Maturation Overview

The assessment of maturity indicators based on age and body condition for male and female breeders.

Nesting Material Preferences

Hens prefer enclosed nesting surfaces with loose materials for comfort and security.

Performance Goals in Breeder Management

Strategies aimed at achieving high performance metrics for fertility and hatchability.

Mating Behavior Influencing Factors

Conditions that affect the mating behavior of breeders such as age, weight, and population dynamics.

Lighting Program Parameters

Guidelines for managing lighting conditions across different phases of breeding.

Broiler Breeder Paradox

The challenge of balancing growth efficiency while ensuring reproduction and health in broiler breeders.

Placement of New Breeder Chicks

The process of introducing new chicks into rearing environments.

Phases of Broiler Breeder Management

Stages of management including brooding, rearing, and laying.