{"title":"A Study of Multiple Turning of Incubated Eggs","authors":"LOYAL F. PAYNE","doi":"10.3382/ps.0070017a","DOIUrl":null,"url":null,"abstract":"<div><p>Last year I reported on the distribution of mortality of chick embryos during the period of incubation and presented a formulae for calculating, on the 14th day of incubation, the approximate number of chicks to be hatched. This method for “counting your chicks before they hatch” was applied, the past season, on five hatches, March 2nd to May 20th (one of which was in 1919.) 7,120 eggs were incubated in small machines and the calculated hatch was 1.4% less than the actual hatch. The estimate was 3,840. The hatch was 3,940 or 100 chicks more.</p><p>Variation of Temperature at Different Levels</p><p>It was also reported, last year, that a large percentage of chicks dead in shell were found to be deformed. In February we recorded temperatures at various levels in the egg chamber and to our surprise we found a difference of 4° to 8° F. between the top and . . .</p></div>","PeriodicalId":100836,"journal":{"name":"Journal of the American Association of Instructors and Investigators of Poultry Husbandry","volume":"7 3","pages":"Pages 17-22"},"PeriodicalIF":0.0000,"publicationDate":"1920-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3382/ps.0070017a","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the American Association of Instructors and Investigators of Poultry Husbandry","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2666365119302881","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
Last year I reported on the distribution of mortality of chick embryos during the period of incubation and presented a formulae for calculating, on the 14th day of incubation, the approximate number of chicks to be hatched. This method for “counting your chicks before they hatch” was applied, the past season, on five hatches, March 2nd to May 20th (one of which was in 1919.) 7,120 eggs were incubated in small machines and the calculated hatch was 1.4% less than the actual hatch. The estimate was 3,840. The hatch was 3,940 or 100 chicks more.
Variation of Temperature at Different Levels
It was also reported, last year, that a large percentage of chicks dead in shell were found to be deformed. In February we recorded temperatures at various levels in the egg chamber and to our surprise we found a difference of 4° to 8° F. between the top and . . .
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