title: [Single administration of a progesterone preparation during early gravidity of gilts following synchronized ovulation and induction of puberty to lower the age of first insemination].
abstract: The action of one single injection of 62.5 mg of hydroxy-progesterone-capronate on the 14th day after first insemination was tested for the purpose of defining the fertility performance of 180 gilts with synchronised ovulation and induced puberty. Synchronised ovulation caused significant rise in litter size and enhancement in gravidity rates. By comparison with a control group, the number of piglets born additional to each first insemination was 2.3. Induction of puberty to lower first-insemination age was of significant positive effect only on the pregnancy result, and somewhat fewer piglets were actually born. Nevertheless, the surplus birth figure to each first insemination was 2.1, as compared to untreated sows. The positive effect on puberty-induced animals was inversely proportional to daily weight rise.
mesh_terms: D000077713:17 alpha-Hydroxyprogesterone Caproate; D000818:Animals; D004973:Estrus Synchronization; D005260:Female; D006908:Hydroxyprogesterones / Q000494:pharmacology*; D007314:Insemination; D008098:Litter Size / Q000187:drug effects; D010062:Ovulation Induction; D011247:Pregnancy; D011270:Pregnancy, Animal / Q000187:drug effects*; D013552:Swine / Q000502:physiology*
chemical_list: D006908:Hydroxyprogesterones; D000077713:17 alpha-Hydroxyprogesterone Caproate
vernacular_title: Untersuchungen zur einmaligen Anwendung eines Progesteronepräparates während der Frühgravidität von Jungsauen nach der Ovulationssynchronisation und nach der Pubertätsinduktion zur Vorverlegung des Erstbesamungsalters.