Abstract
The aims of the study were to investigate the effects of immunization against GnRH using OL protein (Ovalbumin-LHRH-7) on feedlot performance, carcass, meat quality and some reproductive traits in Kıvırcık ram lambs. Ram lambs in the immunization (I, n=7) group were immunized against GnRH using OL protein and boosted 2 weeks later. Control (C, n=7) group was not treated. The animals were kept at pasture for 6 weeks after the first immunization, subjected to a 70 day fattening program, and then slaughtered. Growth performance, various carcass and meat quality characteristics were not affected from the immunization. GnRH immunization induced GnRH antibody production, suppressed testosterone production and testicular growth (P<0.01). Testicular structure was negatively affected from the immunization, but not pituitary. These results suggest that immunization against GnRH with OL could be an alternative castration technique in ram lambs without negatively affecting carcass and meat quality characteristics.
References
Jan 1, 1985·Cell and Tissue Research·K InoueK Kurosumi
Jan 1, 1982·Endocrinology·B S ConneM L Aubert
Mar 1, 1984·The Journal of Endocrinology·S SakumaF Yoshimura
Jan 1, 1995·Journal of Reproduction and Fertility·B W BrownR D Rigby
May 1, 1994·Journal of Reproduction and Fertility·B W BrownR D Rigby
May 12, 1998·Journal of Neuroendocrinology·L A NolanA Levy
Jun 15, 1999·Vaccine·Y ZhangJ J Reeves
May 10, 2001·Animal Reproduction Science·M J D'OcchioT E Trigg
Mar 16, 2005·Animal Reproduction Science·Hasan UlkerJerry J Reeves
Jul 30, 2005·The Veterinary Journal·Sibylle C MellemaAdrian Steiner
Mar 9, 2006·The Journal of Endocrinology·L A Nolan, A Levy
Mar 11, 2006·The Veterinary Journal·Susanne MelchesAdrian Steiner
Jul 1, 1982·Theriogenology·I A JeffcoateD B Crighton
May 30, 2008·Reproduction in Domestic Animals = Zuchthygiene·H UlkerJ J Reeves
Jul 25, 2008·Reproduction in Domestic Animals = Zuchthygiene·R Fayrer-Hosken
Sep 3, 2008·Theriogenology·S EinarssonH Rodriguez-Martinez
Nov 21, 2008·Reproduction in Domestic Animals = Zuchthygiene·H UlkerJ J Reeves
Oct 1, 2004·Meat Science·E L de A RibeiroJ J Reeves
Citations
Feb 11, 2012·Tropical Animal Health and Production·Ozdal GökdalSibel Karaca Demircioğlu
Jul 25, 2015·Asian Journal of Andrology·Xing-Fa HanXian-Yin Zeng
Dec 1, 2014·Theriogenology·Xingfa HanTianzeng Song
Jun 21, 2016·International Immunopharmacology·Xingfa HanXianyin Zeng
Dec 23, 2017·Biology of Reproduction·Mengsi XuShangquan Gan
Apr 17, 2010·Tropical Animal Health and Production·Irfan DaskiranAskin Kor
Jan 18, 2019·Animal : an International Journal of Animal Bioscience·T NeedhamL C Hoffman
Apr 23, 2021·Theriogenology·Paulo Henrique YamadaEunice Oba
Jul 6, 2021·Animal Reproduction·Laiara Fernandes RochaLarissa Pires Barbosa