Performance Objectives

Transcription

1 308 PARENT STOCK Performance Objectives An Aviagen Brand

2 Introduction This booklet contains the performance objectives for Ross 308 Parent Stock and is to be used with the Ross 308 Parent Stock Management Manual. Performance Poultry production is a global activity but across the world there are differing management strategies adapted to local conditions. These performance objectives are for birds that receive the first light stimulation after 21 weeks (147 days +) of age. This is the most common strategy used worldwide as it gives distinct advantages in early egg size, chick number and broiler chick quality. Achieving the genetic potential of the birds depends on: Management to provide birds with their required environment. A dietary regime that provides the appropriate nutrients. Effective biosecurity and disease control. If any one of these elements is sub-optimal, performance will suffer. The three sectors, environment, nutrition and health, are also interdependent; a problem in any one will result in a negative response by the bird to the other factors. Data contained within this booklet indicates the performance that can be achieved under good management and environmental conditions and when feeding the recommended nutrient levels. They should therefore be regarded as Performance Objectives and not specifications. In practice, variations in performance may occur for a wide variety of reasons. For example, feed consumption can be affected significantly by form of feed, energy level and house temperature. While every attempt has been made to ensure the accuracy and relevance of the information presented, Aviagen accepts no liability for the consequences of using this information to manage Parent Stock. All weight measurements are shown in both metric (kg/g) and imperial (lb/oz) to reflect the global nature of this publication. In the tables, values are rounded. This may result in small inaccuracies when using the objectives to calculate other performance statistics. For further information on the management of Ross stock, please contact your local Technical Service Manager or the Technical Services Department. 02

3 Contents 04 Performance Summary 05 Male Body Weight and Feeding Program 06 Female In-Season Body Weight and Feeding Program 07 Female Out-of-Season Body Weight and Feeding Program 08 Weekly Egg Production 09 Weekly Hatchability and Chick Production 10 Weekly Egg Weight and Egg Mass 03

4 Performance Summary Global Ross 308 breeder performance objectives for birds light stimulated after 21 weeks of age (147 days +) Summary of 40 weeks of production Age at depletion (days) (weeks) KEY (kg/g) metric measurement (lb/oz) imperial measurement Total Eggs (HHA*) Hatching Eggs (HHA*) Chicks/female housed at 175 days (25 weeks) Hatchability % Age at 5% Production (days) (weeks) Peak Production % Body weight at 175 days (25 weeks) 2975g 6.56lb Body weight at depletion g lb Mortality + culls % (rearing period) Mortality % (laying period) 8 8 Feed/100 Chicks** day old 448 days (0 64 weeks) 37.0kg 81.6lb Feed/100 Hatching Eggs** day old 448 days (0 64 weeks) 31.4kg 69.2lb NOTES * Hen Housed Average ** Feed amounts expressed in the table do not include male feed allocations. 04

5 Male Body Weight and Feeding Program Age Age Body Weekly Feed Body Weekly Feed Energy intake (days) (weeks) weight gain (g/bird/day) weight gain (lb/100/day) (kcal/bird/day)* (g) (g) (lb) (lb) day old 0 ad lib ad lib KEY (kg/g) metric measurement (lb/oz) imperial measurement NOTES Weekly body-weight gain beyond 29 weeks (203 days) should average approximately 30 grams ( lb). This profile allows the male to reach sexual maturity by first egg. Field performance has shown that this practice ensures that the body condition of the males is not compromised so they will maintain the best possible fertility levels. Body weights are based on a feed day, 4-6 hours after feeding. Feed quantities are a guide only; actual feed levels will depend on the energy value of individual rations. The feed allowance should increase in the lay period and never decrease. * Based on 2800 kcal ME/kg (1270 kcal ME/lb). Adjustments must be made to reflect feeding differing energy levels. 05

6 Female In-Season Body Weight and Feeding Program All flocks grown in black-out housing are considered in-season. Age Age Body Weekly Feed Body Weekly Feed Energy intake (days) (weeks) weight gain (g/bird/day) weight gain (lb/100/day) (kcal/bird/day)* (g) (g) (lb) (lb) day old 0 ad lib ad lib KEY (kg/g) metric measurement (lb/oz) imperial measurement NOTES Weekly body-weight gain beyond 33 weeks (231 days) should average approximately 20 grams ( lb). Body weights are based on a feed day, 4-6 hours after feeding. Feed quantities are given as a guide. Birds should be fed the amount of feed they need to achieve the body-weight target curve. * Based on 2800 kcal ME/kg (1270 kcal ME/lb). Adjustments must be made to reflect feeding differing energy levels. 06

7 Female Out-of-Season Body Weight and Feeding Program Age Age Body Weekly Feed Body Weekly Feed Energy intake (days) (weeks) weight gain (g/bird/day) weight gain (lb/100/day) (kcal/bird/day)* (g) (g) (lb) (lb) day old 0 ad lib ad lib KEY (kg/g) metric measurement (lb/oz) imperial measurement NOTES Weekly body-weight gain beyond 33 weeks (231 days) should average approximately 20g ( lb). Body weights are based on a feed day, 4-6 hours after feeding. Feed quantities are given as a guide. Birds should be fed the amount of feed they need to achieve the body-weight target curve. * Based on 2800 kcal ME/kg (1270 kcal ME/lb). Adjustments must be made to reflect feeding differing energy levels. 07

8 Weekly Egg Production Week of Age Age Hen housed Hen week Eggs/bird/ Eggs/bird/ Hatching Hatching production (days) (weeks) (%) (%)* week cum. eggs/bird/ eggs/bird/ week** cum NOTES * Hen week (%) is based on the assumption that mortality in lay is 8% with 0.2% mortality per week. ** A hatching egg is considered to be an egg which is 50 grams (21.2 oz/dozen) or heavier. Hatching egg utilization weekly Hatching egg utilization cum

9 Weekly Hatchability and Chick Production Week of Age Age Hatch all Cum. Chicks/week Cum. chicks production (days) (weeks) eggs hatchability hen housed hen housed (%)* (%) NOTE * Hatchability is based on an average egg age of 3 days. Hatchability will drop by 0.5% per day of storage between 7 and 11 days. 09

10 Weekly Egg Weight and Egg Mass Week of Age Age Hen week Egg weight Egg mass* Egg weight production (days) (weeks) (%) (g) (oz/dozen) KEY (kg/g) metric measurement (lb/oz) imperial measurement NOTE * Egg mass = Hen week (%) x Egg weight (g)

11 Notes

12 For further information on the management of Ross stock, please contact your local Technical Service Manager or the Technical Services Department.