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Next to breeder farms and broiler farms, "Het Spelderholt", was equiped with a small semi-practical Petersime hatchery with 4 identical 8. There were 3 hatchers with 8. Perfect conditions for research purposes!
The Mother of all incubation thesis about embryo temperature was the one written by Ron Meijerhof in Theoretical and emperical studies on temperature and moisture loss of hatching eggs during the pre-incubation period.
Especially the paper he published with Gerard van Beek in was of importance for all further research about embryo temperature. This was the theoretical basis that induced a huge change in the hatchery world.
The step from theory to practise still had to be made. I started working at "Het Spelderholt" in when Ron left to join Hubbard. In the storage room I found a nice piece of equipment to measure the temperature of eggs.
Nothing digital, so the temperatures were recorded on paper and I typed them over in the computer The first measurements of eggshell temperatures in practise were done in the Van Erp Hatchery broilers in St.
Oedenrode, and in the 't Anker Hatchery layers in Ochten. These showed huge variations between eggs at different positions, and hatchability was poor at the places where eggs were overheated. This was published insee this paper about the importance of air velocity in incubation. This kick-started a new area of practical incubation research, based on the control of eggshell temperature and embryo temperature.
In that same year we performed an experiment at "Het Spelderholt" to control eggshell temperature during incubation to mimic conditions in single stage and multi stage incubators. Hatching eggs from our breeder farm were incubated in the hatchery and the chicks were placed in one of our broiler grow-out farms.
In the broiler farm we also used different temperature profiles to show the importance of good brooding temperatures as well. A nice integrated approach so to say!
The hatchery was abandoned how unfortunate Well, with some flexibility and loaded with good ideas this brought some nice opportunities! This was where Henry van den Brand came in the picture who from then onwards started to develop his interests in incubation as well and together we teamed up to explore new research areas for the hatchery industry.
The first scientific paper Lourens et al. Since then, incubation research at Wageningen University is based on the control of embryo temperature and today they investigate all kinds of variations on this subject.Reduced fee: Supervisors who are member of a Wageningen Graduate School (EPS, PE&RC, VLAG, WASS, WIAS, WIMEK) and are supervisor of PhD candidates who will be defending their thesis at Wageningen University.
PhD thesis Wageningen University, The Netherlands, With references - with summaries in English, Dutch and Spanish. Multiple dimensions of farmer-driven in-situ conservation in the Andes11 Multiple dimensions of farmer-driven in-situ conservation in the Andes13 Folk descriptors and nomenclature ï Summary Organic farming can be referred as an organism, in which all the component parts- the soil minerals, organic matter, micro-organisms, insects, plants, animals and humans-.
Thesis title: “Two times more with two times less”: Framing and reframing of Global Food Security at Wageningen UR Abstract: Wageningen University & Research Centre (Wageningen UR) is one of the world’s leading education and research institutes in the area of life sciences, agriculture and food.
MGI-thesis guidelines Laboratory of Geo-Information Science and Remote Sensing Page 2 of 26 Table of Contents Page Preface 3 1. Introduction 4 information and terms of references for preparing an MSc thesis at Wageningen University [Study handbook /)].
Common elements in the thesis are: literature study, protocol writing, attending research presentations by students and staff, meetings with coach and supervisor, oral presentation of results, written report and a final oral examination with the examiner and a staff member.