title: [Trials to improve weight development of suckling piglets by administration of substances with gestagenic activity to sows in puerperium].
abstract: The investigations reported in this paper were undertaken against the background of literature data on successful increase of milk yield of sows by offering them gestagens, between the eighth and 21st days of lactation, and on higher weight increases thus induced in piglets before weaning. Those results should be reproduced under conditions of industrialised production, with the view to reducing the percentage of weaned piglets below normal weight. However, the results published were not confirmed by three experimental approaches, using litters of different sizes as well as different megestrol acetate doses (20 mg and 30 mg per sow/die), between the eighth and 21st days of lactation. Involved in these experiments were 579 test animals and 582 controls.
mesh_terms: D000284:Administration, Oral; D000818:Animals; D000833:Animals, Suckling / Q000502:physiology; D001835:Body Weight / Q000187:drug effects*; D005260:Female; D007774:Lactation / Q000187:drug effects*; D008535:Megestrol / Q000008:administration & dosage* / Q000494:pharmacology; D011247:Pregnancy; D013552:Swine / Q000502:physiology*
chemical_list: D008535:Megestrol
vernacular_title: Versuche zur Verbesserung der Masseentwicklung von Saugferkeln durch Verabreichung gestagenwirksamer Substanzen an Puerperalsauen.