Results 141 to 150 of about 574 (166)

EFFECTS OF A GNRH VACCINE (IMPROVAC®) ON PATAGONIAN (OTARIA BYRONIA) AND CALIFORNIA SEA LIONS (ZALOPHUS CALIFORNIANUS)

open access: closedJournal of Zoo and Wildlife Medicine, 2021
Improvac® is a gonadotropin-releasing hormone vaccine developed to reduce "boar taint" in the meat of male domestic pig. The use of Improvac for contraception of zoo and free-living animals has been increasing in recent years. This study reports the use, efficacy, and side effects of Improvac on five male sea lions.
Javier, Martinez-Giménez   +2 more
exaly   +4 more sources

Effects of Improvac and Bopriva on the testicular function of boars ten weeks after immunization

open access: closedAnimal Reproduction Science, 2013
This study investigated the effects of Improvac and Bopriva, two anti-GnRF immunization products, on testicular function in boars. We predicted that both products would diminish testicular function; however, we specifically tested the hypothesis that the duration of efficacy for Bopriva would be longer than that of Improvac. Animals were immunized with
Christopher A Pearl
exaly   +4 more sources

Immunocastration with Improvac™ reduces aggressive and sexual behaviours in male pigs

open access: closedApplied Animal Behaviour Science, 2013
Abstract Surgical castration of male pigs is a common practice to reduce the risk of boar taint, an accumulation of pheromones in the muscles of pigs giving an undesirable odour to the pork of entire boars. Castration is not widely practiced in the UK for welfare reasons and indeed, assurance schemes will not allow castrated animals into their ...
Amanda Nevel
exaly   +3 more sources

Early immunocastration of male pigs with Improvac – Effect on boar taint, hormones and reproductive organs

open access: closedVaccine, 2011
The aim of this study was to investigate the effect of a vaccine against gonadotropin-releasing hormone (GnRH), Improvac(®) (Pfizer Ltd), administered at a pre- or early pubertal stage on boar taint, hormonal status and reproductive organs. Crossbred male pigs (Swedish Yorkshire dams×Swedish Landrace sires or Swedish Yorkshire sires, n=192) were at ...
Galia Zamaratskaia   +2 more
exaly   +4 more sources

Einfluss einer GnRH-Vakzine (Improvac®) auf Gewichtszunahmen und Schlachtkörperqualität von Ebern

open access: closedTierarztliche Praxis Ausgabe G: Grosstiere - Nutztiere, 2011
Zusammenfassung Gegenstand und Ziel: Vergleich von Wirkung und Einfluss der GnRH-Vakzine Improvac® (Pfizer GmbH, Berlin) mit der chirurgischen Kastration bei männlichen Mastschweinen. Material und Methoden: Tiere der Gruppe K (n = 205) wurden in der 1. Lebenswoche (LW) chirurgisch kastriert, Schweine der Gruppe V (n = 191) in der 12.
S Zölß, M Ritzmann, A Palzer
exaly   +3 more sources

Vaccination of boars with a GnRH vaccine (Improvac) eliminates boar taint and increases growth performance.

Journal of Animal Science, 2001
Peri- and postpubertal boars accumulate substances (e.g., androstenone and skatole) in their fatty tissue that are responsible for boar taint in pork. The objective of this study was to assess the efficacy of a GnRH vaccine, Improvac, in eliminating boar taint.
F R Dunshea
exaly   +3 more sources

Long-term effect of vaccination against gonadotropin-releasing hormone, using Improvac™, on hormonal profile and behaviour of male pigs

Animal Reproduction Science, 2008
The objective of this study was to evaluate the long-term effect of a gonadotropin-releasing hormone (GnRH) vaccine, Improvac (Pfizer Ltd.), on the levels of GnRH antibodies, testosterone, estrone sulphate (E1S) and androstenone, as well as skatole and indole in male pigs.
Lotta Rydhmer   +2 more
exaly   +3 more sources

Short- and long-term effects of immunization against gonadotropin-releasing hormone, using Improvac™, on sexual maturity, reproductive organs and sperm morphology in male pigs

Theriogenology, 2009
The objective of this study was to determine the short and long term effects of a gonadotropin-releasing hormone (GnRH) vaccine (Improvac Pfizer Ltd.), on sexual maturity, development of the reproductive organs, and the morphology of caudal epididymal spermatozoa in non-castrated male pigs.
Heriberto Rodríguez-Martínez   +2 more
exaly   +3 more sources

Growth performance and carcass characteristics of Improvac-treated male pigs compared with barrows.

open access: closedBerliner und Munchener tierarztliche Wochenschrift, 2014
The present study assessed the effects of using Improvac (Pfizer Animal Health, Germany) on growth performance and meat characteristics in cross-bred male pigs. In addition average daily weight gain of immunised and surgically castrated males was estimated in order to demonstrate differences in growing patterns in these two treatment groups.
Anna, Albrecht   +4 more
openaire   +2 more sources

A comparison of three anti-inflammatory drugs in weaner pigs using Improvac® as an inflammation model

open access: closedAnimal Production Science, 2015
R. L. Wilson   +3 more
openaire   +2 more sources

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