Results 11 to 20 of about 504 (152)
Immunocontraception of male and female giraffes using the GnRH vaccine Improvac® [PDF]
Zoo Biology, Volume 41, Issue 1, Page 50-64, January 2022., 2022 I Protocols for contraception using the GnRH vaccine Improvac® were developed. A clear reduction of fecal hormone metabolites in female giraffes was achieved with three, and in males with four or five injections at 4‐week intervals. Effective booster injections were administered at 2‐month intervals in the first, and at three to 4‐month intervals in ...
Franz Schwarzenberger +13 more
wiley +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 +6 more sources
Early vaccination with Improvac®: effects on performance and behaviour of male pigs
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 +6 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 +3 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 +6 more sources
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 +5 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-Romans +2 more
exaly +4 more sources
Long-Term Immunocastration Protocols Successfully Reduce Testicles’ Size in Bísaro Pigs [PDF]
Animals, 2021 This study aimed to find a suitable immunocastration protocol for male Bísaro pigs (BP) due to the breed and production system particularities. Twenty-five male BP were treated with Improvac® according to three protocols: using two (GrpE2 and L2) or ...
Gustavo Paixão +5 more
doaj +2 more sources
Immunization against Gonadotropin-Releasing Hormone in Female Beef Calves to Avoid Pregnancy at Time of Slaughter [PDF]
Animals, 2021 Precocious puberty in beef heifers can result in unwanted pregnancies due to accidental breeding by farm bulls. Inbreeding, premature calving followed by dystocia and a high stillbirth rate or slaughtering of pregnant heifers are the consequences of this
Julia Schütz +5 more
doaj +2 more sources
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 +5 more sources