Results 141 to 150 of about 440 (158)

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.
Frank R Dunshea, Dunshea F R, Walker J
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.
Galia Zamaratskaia, L Rydhmer, K Andersson   +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.
K Andersson, M Wallgren, K Lundström
exaly   +3 more sources

Improvac® Immunized Boars Compared to Surgical Castrates: Control of Boar Taint and Growth Performance

2006
E.T.F. Silveira, E. Poleze, O. Umehara, A.P. Tonietti, M.L.T. Buzelli, M.M.H Haguiwara, L. Miyagusku, D. Hennessy   +7 more
exaly   +2 more sources

Effect of a Gonadotropin‐releasing Hormone Vaccine (Improvac^TM) on Steroid Hormones, Boar Taint Compounds and Performance in Entire Male Pigs

Reproduction in Domestic Animals, 2007
ContentsThe objective of this study, comprising two trials, was to evaluate the effect of a gonadotropin‐releasing hormone (GnRH‐vaccine ImprovacTM; Pfizer Ltd) in a sample of the Swedish pig population. The pigs (n = 120) were assigned to three groups: control (entire male pigs), surgical castration and immunization against GnRH.
G, Zamaratskaia, H K, Andersson, G, Chen, K, Andersson, A, Madej, K, Lundström   +5 more
openaire   +2 more sources

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

Berliner 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, Elisabeth, Grosse Beilage, Martina, Henning, Torsten, Bekendorf, Joachim, Krieter   +4 more
openaire   +1 more source

A GnRF vaccine (Improvac®) and porcine somatotropin (Reporcin®) have synergistic effects upon growth performance in both boars and gilts

Australian Journal of Agricultural Research, 2003
The use of a vaccine (Improvac) directed against gonadotrophin-releasing factor (GnRF), to prevent boar taint in male pigs, is also associated with an increase in feed consumption, growth, and higher deposition of subcutaneous fat. Daily administration of porcine somatotropin (pST) consistently increases average daily gain, and feed conversion ...
I. McCauley, M. Watt, D. Suster, D. J. Kerton, W. T. Oliver, R. J. Harrell, F. R. Dunshea   +6 more
openaire   +1 more source

Biochemical Blood Parameters in Enrire Boars and Boars Vaccinated with Improvac®

2011
The objective of this study was to evaluate and to compare the effect of vaccination with Improvac on biochemical bloood parameters in mature boars under commercial AI conditions. A total of 19 Danish Landrace boars: 10 entire males (Control) and 9 males (Test) vaccinated with Improvac were included into the trial.
Bilskis, Ronaldas, Sutkevičienė, Neringa, Januškauskas, Aloyzas, Žilinskas, Henrikas   +3 more
openaire   +1 more source

Effect of vaccination against gnrh with improvac®, on performance parameters and body composition under field

2011
The objective of this study was to evaluate the effect of vaccination against GnRH on performance traits as well as body composition of pigs under commercial farming conditions. A total of 592 cross-bred pigs (male, and gilts) (112 castrated males, CM); 168 males to be vaccinated with Improvac, IM); and 312 females, F) included into the trial.
Žilinskas, Henrikas, Sutkevičienė, Neringa, Garlaitė, Kristina, Januškauskas, Aloyzas   +3 more
openaire   +1 more source

[Effect of a synthetic GnRF vaccine (Improvac®) on daily weight gain and carcass quality of boars. A field trial in Bavaria].

Tierarztliche Praxis. Ausgabe G, Grosstiere/Nutztiere, 2012
The effects of vaccination against gonadotropin releasing factor (GnRF) with Improvac® (Pfizer Animal Health) were compared with surgical castration in fattening pigs.A total of 205 pigs were surgically castrated (group K) and 191 were vaccinated twice (group V) using the boar taint vaccine (Improvac®; 2ml s.c.).
T, Hügel, S, Zöls, A, Palzer, S, Kaufmann, R, Langhoff, M, Ritzmann, K, Heinritzi   +6 more
openaire   +1 more source