The effects of immunological castration against GnRH with recombinant OL protein (Ovalbumin-LHRH-7) on carcass and meat quality characteristics, histological appearance of testes and pituitary gland in Kıvırcık male lambs

Meat Science
O GökdalJohn Jerry Reeves

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

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Citations

Feb 11, 2012·Tropical Animal Health and Production·Ozdal GökdalSibel Karaca Demircioğlu
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

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