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    The effectiveness of recombinant Ol fusion protein (Ovalbumin-LHRH-7) in supressing reproductive functions when injected in single-dose vaccination protocols with different adjuvants
    (Animal Reproduction Science, 2013) Karakuş, Ferda; Yılmaz, Ayhan; Hakan, Bünyamin; Stormo, Keith; Ülker, Hasan
    The objective of this study was to evaluate the effectiveness of recombinant LHRH fusion protein,Ovalbumin-LHRH-7(OL),using a single-dose vaccination protocol in combination with different adjuvants in suppressing reproductive functions in buck kids.For this pur-pose, either a mixture of free OL antigen and encapsulated OL antigen, or encapsulated OL antigen was used. Thirty-nine native buck kids at 12 weeks of age were divided into control (n=7) and treatment groups (n=8 bucks/group).The four treatment groups were formed according to the different vaccine formulations: Group Cp Greceived0.5mgfree OL protein to get her with 1. 0 mg of encapsulated protein with CpG adjuvant. Group mFCA received 0.5mg free OL protein together with 1.0 mg of encapsulated protein with modified Fre-und’s complete adjuvant. Group IS received 1.5 mg encapsulated OL protein with amix of inulin and saponin adjuvants. Group Ism FCA received 1.5mg encapsulated OL protein withamixofinulin, saponin and modified Freund’scomplete adjuvants. Scrotal circumference in CpG and mFCA groups were significantly smaller than that of Control, IS and ISm FCA groups (P<0.05). Numbers and percentage of bucks having spermatozoa in their ejaculate were significantly lowerin Cp G and mFCA groups (P<0.05). OL immunization completely suppressed sperm production, exceptone buck,in CpG and FCA groups (P<0.05).These results imply that it is possible to use OL protein in a single injection protocol for the purpose of immunocastration. Further investigation with a larger number of animals should be carried out to determine the longevity of response to a single injection.
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    Öğe
    Evaluation of one-shot vaccination protocol for suppressing reproductive functions in rams using encapsulated ovalbumin-LHRH-7 protein
    (Agricultural Research Communication Centre, 2018) Yilmaz, Ayhan; Karakus, Ferda; Hakan, Bunyamin; Stormo, Keith; Cengiz, Firat; Ulker, Hasan
    The objective of study were to determine the effectiveness of Ovalbumin-LHRH-7 (OL) protein administered with cytosine guanine (CpG) adjuvant and Incomplete Freund's Adjuvant (IFA), and used one-shot immunization (single-dose vaccination) protocol in which booster dose included in microspheres in rams. Fifty ram lambs at about a year old were used. Treatment groups receiving Ovalbumin LHRH and control contained 10 animals. They were stratified according to age (weeks), live weight and scrotal circumference size, and were randomly assigned to five groups. Scrotal circumference, sexual activities and the numbers of rams having sperm in the ejaculate were affected from treatment (P<0.05) depending on the dose and vaccination protocol. However, immunization did not affect live weight changes in any treatment groups (P>0.05). Findings clearly demonstrate that the effects of OL immunization on reproductive traits in yearling rams were prominent when it was administered at higher dose and classical one primary and one booster immunization as free protein form. Also we observed that the effect of higher and single dose of OL protein in encapsulated form on reproductive traits had the partial suppressing. CpG adjuvant along with IFA was proved to be an effective adjuvant and could be suggested to be used and alternative to FCA in hormone immunization.
  • Küçük Resim
    Öğe
    Evaluation of one-shot vaccination protocol for supressing reproductive functions in rams using encapsulated ovalbumin-LHRH-7 protein
    (Indian Journal Animal Research, 2018) Yılmaz, Ayhan; Karakuş, Ayhan; Hakan, Bünyamin; Stormo, Keith; Ülker, Hasan
    The objective of study were to determine the effectiveness of Ovalbumin-LHRH-7 (OL) protein administered with cytosine guanine (CpG) adjuvant and Incomplete Freund’s Adjuvant (IFA), and used one-shot immunization (single-dose vaccination) protocol in which booster dose included in microspheres in rams. Fifty ram lambs at about a year old were used. Treatment groups receiving Ovalbumin LHRH and control contained 10 animals. They were stratified according to age (weeks), live weight and scrotal circumference size, and were randomly assigned to five groups. Scrotal circumference, sexual activities and the numbers of rams having sperm in the ejaculate were affected from treatment (P<0.05) depending on the dose and vaccination protocol. However, immunization did not affect live weight changes in any treatment groups (P>0.05). Findings clearly demonstrate that the effects of OL immunization on reproductive traits in yearling rams were prominent when it was administered at higher dose and classical one primary and one booster immunization as free protein form. Also we observed that the effect of higher and single dose of OL protein in encapsulated form on reproductive traits had the partial suppressing. CpG adjuvant along with IFA was proved to be an effective adjuvant and could be suggested to be used and alternative to FCA in hormone immunization.