{"id":3003,"date":"2023-01-02T05:02:38","date_gmt":"2023-01-02T05:02:38","guid":{"rendered":"https:\/\/kfm-kasachstan.net\/?p=3003"},"modified":"2023-01-02T05:06:37","modified_gmt":"2023-01-02T05:06:37","slug":"wuechsige-kaelber-fruchtbare-kuehe-2","status":"publish","type":"post","link":"https:\/\/kfm-kasachstan.net\/?p=3003","title":{"rendered":"W\u00fcchsige K\u00e4lber \u2013 fruchtbare K\u00fche"},"content":{"rendered":"<p>Eine intensive K\u00e4lberf\u00fctterung wirkt sich positiv auf die Entwicklung des Reproduktionstraktes und die sp\u00e4tere Fruchtbarkeit aus. Besonders die Intensit\u00e4t der Tr\u00e4nkeversorgung der K\u00e4lber kann das Fruchtbarkeitsgeschehen der sp\u00e4teren F\u00e4rsen deutlich beeinflussen. Das ist das Ergebnis einer kanadischen Studie (Universit\u00e4t Alberta) mit 36 Holsteink\u00e4lbern und vier F\u00fctterungsgruppen.<\/p>\n<ul>\n<li>bis 7. Woche: 5 l Vollmilch vs. 10 l Vollmilch am Tag.<\/li>\n<li>bis 25. Woche: 70% Kraftfutter und 30% geh\u00e4ckseltes Stroh vs. 85% Kraftfutter und 15% geh\u00e4ckseltes Stroh.<\/li>\n<\/ul>\n<p>Ab der 26. Woche wurde w\u00f6chentlich das K\u00f6rpergewicht plus H\u00fcfth\u00f6he gemessen und ein rektaler Ultraschall durchgef\u00fchrt, um die Dicke der Geb\u00e4rmutterschleimhaut, die Ovarialstrukturen sowie die Anzahl und Gr\u00f6\u00dfe der Follikel zu bestimmen. Ein sichtbarer Gelbk\u00f6rper f\u00fchrt zum ersten Eisprung und damit den Eintritt in die Pubert\u00e4t. Der rektale Ultraschall wurde bis zur zweiten Ovulation weitergef\u00fchrt.<\/p>\n<p>Ergebnisse: Die intensiv gef\u00fctterten Rinder hatten ein signifikant h\u00f6heres K\u00f6rpergewicht (82 kg mit 8 Wochen, 247 kg mit 25 Wochen) als die Standard-F\u00fctterungsgruppe (73 kg mit 8 Wochen, 230 kg mit 25 Wochen).<\/p>\n<p>Die hochenergetisch versorgten K\u00e4lber zeigten eine dickere Geb\u00e4rmutterschleimhaut nach dem Absetzen (12 mm vs. 10,8 mm) sowie mehr und gr\u00f6\u00dfere Follikel w\u00e4hrend des ersten Zyklus. Die Follikelanzahl bei F\u00e4rsen in den n\u00e4chsten Zyklen ist in hohem Ma\u00dfe wiederholbar. Aus diesen Follikeln entwickelten sich tendenziell mehr Follikel der Klasse 2 (6 bis 9 mm) und 3 (&gt;9 mm), die sp\u00e4ter zur Eizelle heranwachsen. Im Durchschnitt zeigten die Tiere mit 39 Wochen den ersten Zyklus.<\/p>\n<p>Fazit f\u00fcr die Praxis: Intensiv gef\u00fctterte K\u00e4lber werden schwerer, kommen schneller in die Pubert\u00e4t und bilden die Basis f\u00fcr eine gute Fruchtbarkeit.<\/p>\n<p>Quelle: Bruinje et al., 2019<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Eine intensive K\u00e4lberf\u00fctterung wirkt sich positiv auf die Entwicklung des  [&#8230;]<\/p>\n","protected":false},"author":3,"featured_media":2982,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","footnotes":""},"categories":[9],"tags":[],"post_folder":[],"class_list":["post-3003","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized-de"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - 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