{"id":140,"date":"2015-05-05T13:42:21","date_gmt":"2015-05-05T13:42:21","guid":{"rendered":"http:\/\/lovaasgjerstad.no\/jaerhons\/?page_id=140"},"modified":"2019-03-02T14:05:12","modified_gmt":"2019-03-02T14:05:12","slug":"jaerhons-avlsforsok-med-fargevariantene","status":"publish","type":"page","link":"https:\/\/lovaasgjerstad.no\/jaerhons\/?page_id=140","title":{"rendered":"J\u00e6rh\u00f8ns &#8211; avlsfors\u00f8k med fargevariantene"},"content":{"rendered":"<p>Til tross for at rasen hadde hatt mange \u00e5r p\u00e5 kontrollavlsstasjonen p\u00e5 J\u00e6ren, s\u00e5 varierte fargevariantene p\u00e5 kyllingene i hver generasjon. Det kom kyllinger med svart tverrstriping, med brun tverrstriping, gule og brunspraglete, og i tillegg b\u00e5de lyse og m\u00f8rke varianter innen disse ulike fargevariantene. Overl\u00e6rer Ivar Finne ved Statens Sm\u00e5bruksl\u00e6rerskole og professor Per Tuff ved Norges Veterin\u00e6rh\u00f8gskole, ville unders\u00f8ke egenskapene ved fargevariantene hos j\u00e6rh\u00f8ns. De hadde tidligere gjort fors\u00f8k med kj\u00f8nnsvisende kyllinger hos legbar, etter oppskrift fra fors\u00f8ksmetodene til den britiske professor Punnet. N\u00e5 ville de se om de stripete j\u00e6rh\u00f8nsene hadde noen av de samme egenskapene. Resultatet av forskningen ble publiserte i 1944.<\/p>\n<p>Finne og Tuff gjorde avlsfors\u00f8k med to avlsstammer, der 206 ble beskrevet som nyklekte kyllinger, og 168 av dem vokste opp til at de igjen kunne bestemme fargevarianter p\u00e5 voksenfj\u00e6rdrakt. De fant at fargen varierte sterkt mellom de nyklekte kyllingene, men at dunfargen ogs\u00e5 kunne fortelle hvordan fargevarianten ville se ut som voksen.<\/p>\n<p>De fant f\u00f8lgende:<\/p>\n<ul>\n<li>Kyllinger som var svarte i dunfargen med lys flekk i nakken utviklet seg til dyr med svart tverrstriping, men med lysere halsfj\u00e6r. Hanene ogs\u00e5 med lysere skuldre og sadlbeheng.<\/li>\n<li>Kyllinger som var brune, gulbrune eller meget lyse, og som samtidig hadde lys nakke og hode eller tydelig lys flekk i nakken, ble som voksne brune tverrstripete (med brune eller gulbrune tverrstriper p\u00e5 lysefj\u00e6r).<\/li>\n<li>I denne gruppen fant man en tydelig forskjell mellom dunfarge hos det som senere skulle bli haner eller h\u00f8ner.\n<ul>\n<li>De 15 kyllingene som var brune med lys nakke og hode eller med stor nakkeflekk, ble det 13 haner og 2 brunspraglete h\u00f8ner.<\/li>\n<li>De 62 kyllingene som var brune med liten nakkeflekk, ble det 61 h\u00f8ner.<\/li>\n<li>De 55 kyllingene som var klekt som lyse, ble haner.<\/li>\n<\/ul>\n<\/li>\n<li>De konkluderte med at alle kyllinger som er lyse eller brune med stor nakkeflekk er haner, og at alle kyllinger som brune med liten nakkeflekk er h\u00f8ner.<\/li>\n<li>Siden brunt er recessivt for svart, ville man ved bare \u00e5 velge lyse eller brune kyllinger utelukke forekomsten av svarte tverrstripete dyr. En ville da f\u00e5 j\u00e6rh\u00f8ns som har kj\u00f8nnsvisende farge.<\/li>\n<li>Alle avlsdyr i fors\u00f8ket hadde videref\u00f8rt tverrstripingsfaktoren.<\/li>\n<li>De konkluderte med at \u00e5rsaken til at fargevariantene ikke har v\u00e6rt konstante innen rasen var at det har i stor grad hadde v\u00e6rt brukt lyse haner, med brun tverrstriping, p\u00e5 m\u00f8rke h\u00f8ner, med svart tverrstriping.<\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td>\n<p><figure id=\"attachment_68\" aria-describedby=\"caption-attachment-68\" style=\"width: 300px\" class=\"wp-caption alignleft\"><img fetchpriority=\"high\" decoding=\"async\" class=\"size-medium wp-image-68\" src=\"http:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr440_svart-lys-nakkeflekk_j\u00e6rh\u00f8ns_011-300x184.jpg\" alt=\"J\u00e6rh\u00f8ne nr 440, svart med lys nakkeflekk.\" width=\"300\" height=\"184\" srcset=\"https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr440_svart-lys-nakkeflekk_j\u00e6rh\u00f8ns_011-300x184.jpg 300w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr440_svart-lys-nakkeflekk_j\u00e6rh\u00f8ns_011-768x471.jpg 768w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr440_svart-lys-nakkeflekk_j\u00e6rh\u00f8ns_011-1024x628.jpg 1024w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr440_svart-lys-nakkeflekk_j\u00e6rh\u00f8ns_011.jpg 1894w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-68\" class=\"wp-caption-text\">J\u00e6rh\u00f8ne nr 440, svart med lys nakkeflekk.<\/figcaption><\/figure><\/td>\n<td>\n<p><figure id=\"attachment_69\" aria-describedby=\"caption-attachment-69\" style=\"width: 300px\" class=\"wp-caption alignleft\"><img decoding=\"async\" class=\"size-medium wp-image-69\" src=\"http:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr440_svart-tverrstripet_j\u00e6rh\u00f8ns_012-300x193.jpg\" alt=\"\" width=\"300\" height=\"193\" srcset=\"https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr440_svart-tverrstripet_j\u00e6rh\u00f8ns_012-300x193.jpg 300w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr440_svart-tverrstripet_j\u00e6rh\u00f8ns_012-768x494.jpg 768w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr440_svart-tverrstripet_j\u00e6rh\u00f8ns_012-1024x658.jpg 1024w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr440_svart-tverrstripet_j\u00e6rh\u00f8ns_012.jpg 1825w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-69\" class=\"wp-caption-text\">J\u00e6rh\u00f8ne nr 440, svart tverrstripet.<\/figcaption><\/figure><\/td>\n<\/tr>\n<tr>\n<td>\n<p><figure id=\"attachment_61\" aria-describedby=\"caption-attachment-61\" style=\"width: 300px\" class=\"wp-caption alignleft\"><img decoding=\"async\" class=\"size-medium wp-image-61\" src=\"http:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr444_svart-lys-nakkeflekk_j\u00e6rh\u00f8ns_009-300x182.jpg\" alt=\"J\u00e6rhane nr 444, svart med lys nakkeflekk.\" width=\"300\" height=\"182\" srcset=\"https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr444_svart-lys-nakkeflekk_j\u00e6rh\u00f8ns_009-300x182.jpg 300w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr444_svart-lys-nakkeflekk_j\u00e6rh\u00f8ns_009-768x467.jpg 768w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr444_svart-lys-nakkeflekk_j\u00e6rh\u00f8ns_009-1024x623.jpg 1024w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr444_svart-lys-nakkeflekk_j\u00e6rh\u00f8ns_009.jpg 1891w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-61\" class=\"wp-caption-text\">J\u00e6rhane nr 444, svart med lys nakkeflekk.<\/figcaption><\/figure><\/td>\n<td>\n<p><figure id=\"attachment_62\" aria-describedby=\"caption-attachment-62\" style=\"width: 300px\" class=\"wp-caption alignleft\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-62\" src=\"http:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr444_svart-tverrstripet_j\u00e6rh\u00f8ns_010_1-300x188.jpg\" alt=\"J\u00e6rhane nr 444, svart tverrstripet\" width=\"300\" height=\"188\" srcset=\"https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr444_svart-tverrstripet_j\u00e6rh\u00f8ns_010_1-300x188.jpg 300w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr444_svart-tverrstripet_j\u00e6rh\u00f8ns_010_1-768x480.jpg 768w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr444_svart-tverrstripet_j\u00e6rh\u00f8ns_010_1-1024x641.jpg 1024w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr444_svart-tverrstripet_j\u00e6rh\u00f8ns_010_1-400x250.jpg 400w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr444_svart-tverrstripet_j\u00e6rh\u00f8ns_010_1.jpg 1859w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-62\" class=\"wp-caption-text\">J\u00e6rhane nr 444, svart tverrstripet.<\/figcaption><\/figure><\/td>\n<\/tr>\n<tr>\n<td>\n<p><figure id=\"attachment_63\" aria-describedby=\"caption-attachment-63\" style=\"width: 300px\" class=\"wp-caption alignleft\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-63\" src=\"http:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr450_brun-stor-lys-nakkeflekk_j\u00e6rh\u00f8ns_015-300x183.jpg\" alt=\"J\u00e6rhane nr 450, brun med stor lys nakkeflekk\" width=\"300\" height=\"183\" srcset=\"https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr450_brun-stor-lys-nakkeflekk_j\u00e6rh\u00f8ns_015-300x183.jpg 300w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr450_brun-stor-lys-nakkeflekk_j\u00e6rh\u00f8ns_015-768x470.jpg 768w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr450_brun-stor-lys-nakkeflekk_j\u00e6rh\u00f8ns_015-1024x626.jpg 1024w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr450_brun-stor-lys-nakkeflekk_j\u00e6rh\u00f8ns_015.jpg 1892w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-63\" class=\"wp-caption-text\">J\u00e6rhane nr 450, brun med stor lys nakkeflekk<\/figcaption><\/figure><\/td>\n<td>\n<p><figure id=\"attachment_64\" aria-describedby=\"caption-attachment-64\" style=\"width: 300px\" class=\"wp-caption alignleft\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-64\" src=\"http:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr450_brun-tverrstripet-m\u00f8rk-normaltype_j\u00e6rh\u00f8ns_016-300x193.jpg\" alt=\"J\u00e6rhane nr 450, brun tverrstripet (m\u00f8rk)\" width=\"300\" height=\"193\" srcset=\"https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr450_brun-tverrstripet-m\u00f8rk-normaltype_j\u00e6rh\u00f8ns_016-300x193.jpg 300w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr450_brun-tverrstripet-m\u00f8rk-normaltype_j\u00e6rh\u00f8ns_016-768x495.jpg 768w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr450_brun-tverrstripet-m\u00f8rk-normaltype_j\u00e6rh\u00f8ns_016-1024x660.jpg 1024w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr450_brun-tverrstripet-m\u00f8rk-normaltype_j\u00e6rh\u00f8ns_016.jpg 1930w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-64\" class=\"wp-caption-text\">J\u00e6rhane nr 450, brun tverrstripet (m\u00f8rk)<\/figcaption><\/figure><\/td>\n<\/tr>\n<tr>\n<td>\n<p><figure id=\"attachment_66\" aria-describedby=\"caption-attachment-66\" style=\"width: 300px\" class=\"wp-caption alignleft\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-66\" src=\"http:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr455_lys_j\u00e6rh\u00f8ns_013-300x184.jpg\" alt=\"J\u00e6rhane nr 455, lys j\u00e6rh\u00f8ns.\" width=\"300\" height=\"184\" srcset=\"https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr455_lys_j\u00e6rh\u00f8ns_013-300x184.jpg 300w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr455_lys_j\u00e6rh\u00f8ns_013-768x472.jpg 768w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr455_lys_j\u00e6rh\u00f8ns_013-1024x630.jpg 1024w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr455_lys_j\u00e6rh\u00f8ns_013.jpg 1987w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-66\" class=\"wp-caption-text\">J\u00e6rhane nr 455, lys j\u00e6rh\u00f8ns.<\/figcaption><\/figure><\/td>\n<td>\n<p><figure id=\"attachment_65\" aria-describedby=\"caption-attachment-65\" style=\"width: 300px\" class=\"wp-caption alignleft\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-65\" src=\"http:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr455_brun-tverrstripet-lys-normalfarget_j\u00e6rh\u00f8ns_014-300x196.jpg\" alt=\"J\u00e6rhane nr 455, brun tverrstripet (lys)\" width=\"300\" height=\"196\" srcset=\"https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr455_brun-tverrstripet-lys-normalfarget_j\u00e6rh\u00f8ns_014-300x196.jpg 300w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr455_brun-tverrstripet-lys-normalfarget_j\u00e6rh\u00f8ns_014-768x503.jpg 768w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr455_brun-tverrstripet-lys-normalfarget_j\u00e6rh\u00f8ns_014-1024x670.jpg 1024w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr455_brun-tverrstripet-lys-normalfarget_j\u00e6rh\u00f8ns_014.jpg 1884w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-65\" class=\"wp-caption-text\">J\u00e6rhane nr 455, brun tverrstripet (lys).<\/figcaption><\/figure><\/td>\n<\/tr>\n<tr>\n<td>\n<p><figure id=\"attachment_72\" aria-describedby=\"caption-attachment-72\" style=\"width: 300px\" class=\"wp-caption alignleft\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-72\" src=\"http:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr452_brun-liten-lys-nakkeflekk_j\u00e6rh\u00f8ns_017-300x181.jpg\" alt=\"J\u00e6rh\u00f8ne nr 452, brun med liten lys nakkeflekk.\" width=\"300\" height=\"181\" srcset=\"https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr452_brun-liten-lys-nakkeflekk_j\u00e6rh\u00f8ns_017-300x181.jpg 300w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr452_brun-liten-lys-nakkeflekk_j\u00e6rh\u00f8ns_017-768x464.jpg 768w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr452_brun-liten-lys-nakkeflekk_j\u00e6rh\u00f8ns_017-1024x619.jpg 1024w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr452_brun-liten-lys-nakkeflekk_j\u00e6rh\u00f8ns_017.jpg 1900w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-72\" class=\"wp-caption-text\">J\u00e6rh\u00f8ne nr 452, brun med liten lys nakkeflekk.<\/figcaption><\/figure><\/td>\n<td>\n<p><figure id=\"attachment_73\" aria-describedby=\"caption-attachment-73\" style=\"width: 300px\" class=\"wp-caption alignleft\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-73\" src=\"http:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr452_brun-tverrstripet-normaltype_j\u00e6rh\u00f8ns_018-300x195.jpg\" alt=\"J\u00e6rh\u00f8ne nr 452, brun tverrstripet, normaltype.\" width=\"300\" height=\"195\" srcset=\"https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr452_brun-tverrstripet-normaltype_j\u00e6rh\u00f8ns_018-300x195.jpg 300w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr452_brun-tverrstripet-normaltype_j\u00e6rh\u00f8ns_018-768x498.jpg 768w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr452_brun-tverrstripet-normaltype_j\u00e6rh\u00f8ns_018-1024x664.jpg 1024w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr452_brun-tverrstripet-normaltype_j\u00e6rh\u00f8ns_018.jpg 1889w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-73\" class=\"wp-caption-text\">J\u00e6rh\u00f8ne nr 452, brun tverrstripet, normaltype.<br \/>(Denne kaller vi i dag gul-brun).<\/figcaption><\/figure><\/td>\n<\/tr>\n<tr>\n<td>\n<p><figure id=\"attachment_67\" aria-describedby=\"caption-attachment-67\" style=\"width: 300px\" class=\"wp-caption alignleft\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-67\" src=\"http:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr476_ekstra-lys_hane_j\u00e6rh\u00f8ns_021-300x199.jpg\" alt=\"J\u00e6rhane nr 476, ekstra lys hane. Det er ingen kyllingfoto av denne hanen.\" width=\"300\" height=\"199\" srcset=\"https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr476_ekstra-lys_hane_j\u00e6rh\u00f8ns_021-300x199.jpg 300w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr476_ekstra-lys_hane_j\u00e6rh\u00f8ns_021-768x508.jpg 768w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr476_ekstra-lys_hane_j\u00e6rh\u00f8ns_021-1024x678.jpg 1024w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rhane_nr476_ekstra-lys_hane_j\u00e6rh\u00f8ns_021.jpg 1752w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-67\" class=\"wp-caption-text\">J\u00e6rhane nr 476, ekstra lys hane. Det er ingen kyllingfoto av denne hanen.<br \/>(Sett i forhold til svenske avlsfors\u00f8k med Fifty Five Flowery, s\u00e5 ser denne ut til \u00e5 v\u00e6re hanefargen som tilh\u00f8rer den \u00abrypefargete h\u00f8na).<\/figcaption><\/figure><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>\n<p><figure id=\"attachment_71\" aria-describedby=\"caption-attachment-71\" style=\"width: 300px\" class=\"wp-caption alignleft\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-71\" src=\"http:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr449_brun-stor-lys-nakkeflekk_spraglete_j\u00e6rh\u00f8ns_019-300x188.jpg\" alt=\"J\u00e6rh\u00f8ne nr 449, brun med stor lys nakkeflekk og spraglete.\" width=\"300\" height=\"188\" srcset=\"https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr449_brun-stor-lys-nakkeflekk_spraglete_j\u00e6rh\u00f8ns_019-300x188.jpg 300w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr449_brun-stor-lys-nakkeflekk_spraglete_j\u00e6rh\u00f8ns_019-768x482.jpg 768w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr449_brun-stor-lys-nakkeflekk_spraglete_j\u00e6rh\u00f8ns_019-1024x643.jpg 1024w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr449_brun-stor-lys-nakkeflekk_spraglete_j\u00e6rh\u00f8ns_019-400x250.jpg 400w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr449_brun-stor-lys-nakkeflekk_spraglete_j\u00e6rh\u00f8ns_019.jpg 1851w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-71\" class=\"wp-caption-text\">J\u00e6rh\u00f8ne nr 449, brun med stor lys nakkeflekk og spraglete.<\/figcaption><\/figure><\/td>\n<td>\n<p><figure id=\"attachment_70\" aria-describedby=\"caption-attachment-70\" style=\"width: 300px\" class=\"wp-caption alignleft\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-70\" src=\"http:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr449_brunspraglete-med-tverrstriping_j\u00e6rh\u00f8ns_020-300x197.jpg\" alt=\"J\u00e6rh\u00f8ne nr 449, brunspraglete med tverrstriping (Rypefarget)\" width=\"300\" height=\"197\" srcset=\"https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr449_brunspraglete-med-tverrstriping_j\u00e6rh\u00f8ns_020-300x197.jpg 300w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr449_brunspraglete-med-tverrstriping_j\u00e6rh\u00f8ns_020-768x503.jpg 768w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr449_brunspraglete-med-tverrstriping_j\u00e6rh\u00f8ns_020-1024x671.jpg 1024w, https:\/\/lovaasgjerstad.no\/jaerhons\/wp-content\/uploads\/2019\/03\/j\u00e6rh\u00f8ns_j\u00e6rh\u00f8ne_nr449_brunspraglete-med-tverrstriping_j\u00e6rh\u00f8ns_020.jpg 1819w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-70\" class=\"wp-caption-text\">J\u00e6rh\u00f8ne nr 449, brunspraglete med tverrstriping (Rypefarget)<\/figcaption><\/figure><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Gjennom sitt avlsfors\u00f8k er konklusjonen at det er mulig \u00e5 f\u00e5 til en fargevariant med konstant nedarving, som er kj\u00f8nnsvisende hos nyklekte kyllinger.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Til tross for at rasen hadde hatt mange \u00e5r p\u00e5 kontrollavlsstasjonen p\u00e5 J\u00e6ren, s\u00e5 varierte fargevariantene p\u00e5 kyllingene i hver generasjon. Det kom kyllinger med svart tverrstriping, med brun tverrstriping, gule og brunspraglete, og i tillegg b\u00e5de lyse og m\u00f8rke varianter innen disse ulike fargevariantene. Overl\u00e6rer Ivar Finne ved Statens Sm\u00e5bruksl\u00e6rerskole og professor Per Tuff [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":30,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-140","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/lovaasgjerstad.no\/jaerhons\/index.php?rest_route=\/wp\/v2\/pages\/140","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lovaasgjerstad.no\/jaerhons\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/lovaasgjerstad.no\/jaerhons\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/lovaasgjerstad.no\/jaerhons\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lovaasgjerstad.no\/jaerhons\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=140"}],"version-history":[{"count":3,"href":"https:\/\/lovaasgjerstad.no\/jaerhons\/index.php?rest_route=\/wp\/v2\/pages\/140\/revisions"}],"predecessor-version":[{"id":143,"href":"https:\/\/lovaasgjerstad.no\/jaerhons\/index.php?rest_route=\/wp\/v2\/pages\/140\/revisions\/143"}],"up":[{"embeddable":true,"href":"https:\/\/lovaasgjerstad.no\/jaerhons\/index.php?rest_route=\/wp\/v2\/pages\/30"}],"wp:attachment":[{"href":"https:\/\/lovaasgjerstad.no\/jaerhons\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=140"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}