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Show pyINCUBATION p-y p y - INCUBATION PERIOD PERIODUP PERIODUP PERIODUP UP TO AGE OF EGGSHighHatching EGGS EGGSHighHatching High-Hatching High Hatching - Stock ShouldBe Should ShouldBe ShouldBe Be Obtained . Dy ny fly E : W Hendcrion Henderson n Poultry usbandrY Husbandry HusbandryExport IIusbindryExport usbandrYWNU nslo.l nslol nslo.lu6 u6 regusbandrY Export xp Iowa State . Collogo CollogoWNU CollectWNU reg ) WNU Scrvic Service Service . * . Eggs Cggs laid In tn thr thf\ thf the thfafternoon \ afternoon may hntch hatch hntchbetter hatchbetter hatchbetter better than those laid In the morning morningThis morningThis morningThis This was one of the phenomena re revealed revealed revealed vealed In various agricultural agrlculturnl expenment experl expert experlment expertment ment station st'1Uon st1Uon ' tests to discover factorscausing factors factorscausing factorscausing causing poor chick hatches hatchesAnother hatchesAnother hatchesAnother Another unusual fact observed was wasthat wasthat wasthat that the time required for Incubation IncubationIs Is directly related relnted to the age of ot the theegg theegg theegg egg set Those from 14 to 21 days old oldrequired oldrequired oldrequired required 14 to 18 hours longer ( for or In Incuba incubatlon Incubatlon cuba cubatlon lion than did those held less than thaneight thaneight thaneight eight davs days daysChicks da davsChicks e ; Chicks Chlch.s Chlchs . slow In hatching were low Invitality In InvitalIty invitality vitalIty . , It was revealed Only 87 8 7 percent per percent percent cent of the first 90 00 per cent to hatchdied hatch hatchdied hatchdied died In the first eight eighteeks weeks \\eeks eeks peeks \ On theother the theother theother other hand , 24 per pcr cent of or the In last t 10 10per 10per 10per per cent to hatch h'1tch h1tch ' died during the samc same samclength samelength samelength length of timeIilgb time timeHigh High Iilgb summer snmmer temperatures de decreased decreased decreased creased the hatch materially m'lterlally mlterlally ' . . Sudden Suddenand Suddenand Suddenand and sharp drops In temperature caused causedpoor causedpoor causedpoor poor hatches four and five weeks weel.s weels . fol followIng following following lowIng Eggs Iggs : laid during the week weelt ol"cold olcold of of"cold of"cold "cold cold "coldnves " waves \\nves nves naves \ ' were not affected nffected affectedBecause affectedBecause Because the expense of ot getting Informatlon InCor infor InCormatlon informatlon matlon to determine the cause of n a npoor apoor opoor poor hatch h'1tch h1tch hitch ' Is usually too great grent , , It Is Isadvisable isadvisable Isadvisable advisable for Incubator Incub1tor operators to toobtain toobtain toobtain obtain stock stOCh . from high hatching faml fami faml1Ie5 families families 1Ie5 lies and follow good feeding and man man- management management management - agement practices Hatching eggs should be stored storedwhere storedwhere storedwhere where the temperature Is below storedI 68 08 degrecs de degrees degrecs I grees grecs and above abo , e a freezing free71ng freeing For best resuits re resuIts resuits be thaneight than thaneight thaneight suIts they should not kept more eight lays days daysOther < < laysOther Other experimental e\perlmental e perlmental " \ : findings findlDgs revealed revealedthat revealedthat revealedthat that high egg production during the thecsinter thewinter csinter \ Inter and spring months did not harm harmhatchablUty harmhatchability harmhatchablllty hatchablUty hatchability . Eggs from high produc producIng producIng producing Ing hens hatched h'1tched h1tched hitched ' better than those thosefrom thosefrom thosefrom from low pro producetsCross produceis producets produceisCross ucei S SCross Cross breeding Improved Improed improsed Impro\ Impro \ ed hatchabllIty hatchabll hatchabil hatchabllIty hatchability Ity Turning eggs held from one toseven to tose toseen se seen , en days d'1Ys d1Ys ' before setting did not sig slg sig- significantly signiflcantly . - nificantly niflcantly Influence hatching results resultsOne resultsOne resultsOne One station found that pullet eggs eggshatched eggshatched eggshatched hatched better than hen eggs . |