Results 101 to 110 of about 260 (132)
Poultry Science, 2019 Immunocastration (vaccination against Gonadotropin-releasing hormone (GnRH)) has been regarded as a friendly substitution to physical castration in animals. To date, a few studies have reported the use of Improvac for immunocastration in boar and one study in broiler chickens; however, there is an apparent dearth of scientific evidence regarding the ...
Izhar Hyder Qazi, Ming Zhang
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THE EFFECT OF IMPROVAC ON TESTOSTERONE LEVEL AND LIVE WEIGHT OF BULLS
HERALD OF SCIENCE OF S SEIFULLIN KAZAKH AGRO TECHNICAL RESEARCH UNIVERSITY : Veterinary sciences, 2023There are many castration methods of bulls and it is believed that the best ones are those that lead to gonadopause or inhibit the function of the gonads, contribute to a significant increase in the quantity and quality of the products obtained. It is currently considered that immunocastration, compared with chemical and surgical castration, is ...
I .T. Jakupov +3 more
openaire +1 more source
Animal Reproduction Science, 2011 Gonadotropin-releasing hormone (GnRH) vaccine (Improvac(®)) is effective at diminishing boar taint by interfering with testis function. Early pre-pubertal vaccination at 10 and 14 weeks-of-age could be desirable if sufficient and sustained effects could be achieved.
Heriberto Rodríguez-Martínez +2 more
exaly +5 more sources
Journal 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.
Yedra Feltrer-Rambaud
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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.
Yedra Feltrer-Rambaud
exaly +3 more sources
Immunocastration with Improvac™ reduces aggressive and sexual behaviours in male pigs
Applied Animal Behaviour Science, 2013Abstract 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
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Effects of Improvac and Bopriva on the testicular function of boars ten weeks after immunization
Animal Reproduction Science, 2013This 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
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Vaccine, 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
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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 +3 more sources
Einfluss einer GnRH-Vakzine (Improvac®) auf Gewichtszunahmen und Schlachtkörperqualität von Ebern
Tierarztliche Praxis Ausgabe G: Grosstiere - Nutztiere, 2011Zusammenfassung 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
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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.
Frank Dunshea
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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.
Frank Dunshea
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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
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