Immunocontraception of male and female giraffes using the GnRH vaccine Improvac® [PDF]
Zoo Biology, 2022 AbstractThe aim of this study was to develop protocols for contraception in both sexes of giraffes (Giraffa camelopardalis) by using the GnRH vaccine Improvac®. We evaluated the success of immunization by analyzing fecal reproductive hormone metabolites in female (n = 20) and male (n = 9) giraffes.
Franz Schwarzenberger, Florian Sicks
exaly +8 more sources
Improvac immunocastration affects the development of thigh muscles but not pectoral muscles in male chickens [PDF]
Poultry Science, 2020 Improvac has been tentatively used to immune-castrate roosters. The aim of this study was to investigate whether Improvac affected skeletal muscle development in chickens.
Y.T. Zeng +10 more
exaly +8 more sources
Early vaccination with Improvac®: effects on performance and behaviour of male pigs [PDF]
Animal, 2012 The aim of this study was to investigate the effect of giving a two-dose regimen of gonadotropin-releasing hormone vaccine, Improvac® (Pfizer Ltd), earlier than currently recommended, on performance and behaviour of growing/finishing pigs.
Galia Zamaratskaia +2 more
exaly +7 more sources
Effect of the biological castration vaccine (Improvac®) on sex hormones and reproductive organs of pigs in Vietnam [PDF]
Veterinary Integrative Sciences, 2023 The Improvac® vaccine has been shown to improve growth performance, meat quality, and sexual behavior in swine herds in several countries. This study initially investigated the ability of this vaccine to control sex hormones and the development ...
Danh Cong Lai +5 more
doaj +5 more sources
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 +7 more sources
Effect of feed restriction on the performance and behaviour of pigs immunologically castrated with Improvac® [PDF]
Animal, 2012 For centuries, entire male pigs have been castrated to reduce the risk of boar taint. However, physical castration of pig is increasingly being questioned with regard to animal welfare considerations. Immunization against gonadotrophin releasing hormone (
N. Quiniou +4 more
exaly +6 more sources
Effect of vaccination against gonadotrophin-releasing hormone, using Improvac®, on growth performance, body composition, behaviour and acute phase proteins [PDF]
Livestock Science, 2010 The objective of this study was to evaluate the effect of vaccination against GnRH on performance traits, pig behaviour and acute phase proteins. A total of 120 pigs (36 non-castrated males, NCM; 36 males to be vaccinated, IM; 24 castratedmales, CM; and 24 females, FE)were controlled in groups of 12 in pens with feeding stations allowing the recording ...
Emma Fàbrega, Antonio Velarde, J Tibau
exaly +7 more sources
Effect of immunocastration using Improvac on the regulation of adiponectin and leptin in the testes of Landrace boars [PDF]
Medycyna Weterynaryjna, 2022 Immunological castration of male pigs is an attractive alternative to surgical castration used in many countries to reduce the production of the main androgen, androstenone, and skatole, responsible for meat taint. To understand the effect of gonadoliberin (GnRH) vaccination with Improvac on the functional status of Landrace pig testes at the molecular
Kotula-Balak, Małgorzata +9 more
core +4 more sources
Growth performance, carcass characteristics and meat quality of group-penned surgically castrated, immunocastrated (Improvac®) and entire male pigs and individually penned entire male pigs [PDF]
Animal, 2009 The objective of the study was to compare growth performance, carcass characteristics, meat quality and fatty acid composition of the adipose tissue of group-penned barrows, immunocastrated boars and entire males.
Giuseppe Bee +2 more
exaly +6 more sources
Improvac induces immunocastration by affecting testosterone levels and disrupting spermatogenesis in male broiler chickens [PDF]
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
exaly +4 more sources