II Yumurta Zirvesi 5 – 8 Kasim 2015 Belek / Antalya NutriOpt split-feeding system Optimal supply of nutrients to enhance the persistency II Yumurta Zirvesi 5 – 8 Kasim 2015 Belek / Antalya Felipe Sánchez Trouw Nutrition Application & Solution Center

What is NutriOpt split-feeding ? A feed system to optimise egg production. Provide a more precise supply of nutrients to meet with the requirements of the specific phases of egg formation. Hens are fed two different diets per day: Morning diet: meets the requirements for egg production. Afternoon diet: meets the requirements for eggshell formation.

NutriOpt split-feeding – Benefits Improve eggshell quality. More persistency and saleable eggs ( +2 eggs/ hen). Reduction of feed cost ( - 6 € / MT feed). Reduce the excretion of nutrients by faeces.

NutriOpt split-feeding – Concept Different formation phases of the egg Feed intake during the day According to egg formation process Nutritional requirements of laying hens In relation to egg formation process

Different formation phases of the egg 30 minutes after the current oviposition the next ovulation occurs. During the first 3h 30min the white is produced. After forming shell membranes, the eggshell begins to be formed => Ca deposition (20 hours). Hens lay > 90% of their eggs during the morning. Interval between ovipositions => 24±1 hours. Adapted from Etches, 1986, Leeson and Summers, 1978, Larbier and Leclercq, 1992, Keshavarz, 1998).

Feed intake during the day According to egg formation process 40% during the morning 60% during the afternoon Feed intake patterns are different Adapted from Keshavarz, 1998)

Nutritional requirements of laying hens In relation to egg formation process When laying hens are able to select nutrients: Laying hens adapt their nutrient intake depending on time egg formation phase 8% less Energy Intake 11% less CP intake 26% less Ca intake Excess Deficiency Choice feeding Single feed Adapted from Chah, 1972

Trouw Nutrition R+D 9 trials ( 2005 – 2012) performed focused on: Determine optimal nutrient levels in the morning and afternoon diets. Demonstrate the benefits obtained with NutriOpt split-feeding : Improve the persistency, more saleable eggs. => improve eggshell quality. Feed cost savings. Reduce the excretion of nutrients.

Demonstrate the benefits obtained with NutriOpt split-feeding

Improves the eggshell quality (PPI-34; 37; 38; 40) Treatments (PPI-38) Eggshell weight,g Eggshell thickness,mm SWUSA, mg/cm2 Single feed 5.75b 0.372b 80.5b Split Feeding 5.84a 0.376a 81.3a Probability 0.0089 0.0736 0.0989 Results of PPI-40 Increase eggshell thickness, eggshell weight, SWUSA

Improves the persistency, more saleable eggs (PPI-37) Feed Eggs production, % Saleable eggs production, % Single feed (91-94 weeks) 73.17 66.74 Split-Feeding (95-98 weeks) 72.23 69.26 Split-Feeding increases the number of sellable eggs by reducing the amount of broken and shell-less eggs.

Reduction of the amount of nutrients excreted ↓5%

NutriOpt split-feeding implementation Canadá - 2013. China 2014 Turkey Guatemala - 2015 Colombia - 2014 India 2014

NutriOpt split-feeding - Summary NutriOpt split-feeding brings the optimal supply of nutrients to meet the needs of hens in the egg formation process . Brings a more profitable and sustainable egg production, with a lower production cost. These benefits can be achieved easily with Trouw Nutrition´s NutriOpt system, utilizing all the knowledge from R&D findings.