@article{10.11648/j.avs.20150301.13,
  author = {Birhanu Hailu and Berihu Gebrekidan and Solmon Raju and Alemselam Birhanu and Gebrhiwot Tadesse},
  title = {Effects of Gonadotropin Releasing Hormone Analogue in Enhancements of Pregnancy in Repeat Breeding Dairy Cows in and around Mekelle, Tigray, Ethiopia},
  journal = {Animal and Veterinary Sciences},
  volume = {3},
  number = {1},
  pages = {12-17},
  doi = {10.11648/j.avs.20150301.13},
  url = {https://doi.org/10.11648/j.avs.20150301.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.avs.20150301.13},
  abstract = {Clinical trial was carried out to evaluating the effects of GNRH analogue (buserelin acetate) along with AI in repeat breeding cross breed cows on enhancement of pregnancy. The trial was also aimed at evaluation of dose variation on conception rate. Sixty six cross breed dairy cattle which were apparently healthy, exhibits estrus regularly were selected and assigned randomly in to three equal groups(A,B and C); two treated groups and one control group. Group A (n=22) cattle were injected intramuscularly a 20 µg buserelin acetateat along with AI and Group B (n=22) cattle have injected with dose of 10µg Buserelin acetate. Group C (n=22) cattle were receive no treatment and considered as a control group, given a single service. These cows were examined for pregnancy after three months through rectal palpation. Additional history was taken from herd owners. The pregnancy rates recorded were 68%, 59% and 32% in the cattle grouped with A, B and C respectively. The conception rates of the treated groups exceeds control group by 36% and 27% respectively. Treated groups showed a significant statistical variation (P<0.05) as compared to control group. Dose variation between two treated groups has an effect on pregnancy rate with significant variation. Other observed finding was that treated first and second parity cows became more responsive to therapy than those with more than two parity with a significant variation (P<0.05). The study revealed that the use of GNRH analogue therapy at the time of AI can enhance pregnancy rate. This would be helpful and cost effective to minimize financial losses incurred from milk production loss, managmental and feed cost. This might be achieved through reducing calving interval and treating repeat breeding cases. The benefit cost ratio indicates that individual cow could benefit small holder farmer by 140 USD within a single month.},
 year = {2015}
}

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TY  - JOUR
T1  - Effects of Gonadotropin Releasing Hormone Analogue in Enhancements of Pregnancy in Repeat Breeding Dairy Cows in and around Mekelle, Tigray, Ethiopia
AU  - Birhanu Hailu
AU  - Berihu Gebrekidan
AU  - Solmon Raju
AU  - Alemselam Birhanu
AU  - Gebrhiwot Tadesse
Y1  - 2015/01/27
PY  - 2015
N1  - https://doi.org/10.11648/j.avs.20150301.13
DO  - 10.11648/j.avs.20150301.13
T2  - Animal and Veterinary Sciences
JF  - Animal and Veterinary Sciences
JO  - Animal and Veterinary Sciences
SP  - 12
EP  - 17
PB  - Science Publishing Group
SN  - 2328-5850
UR  - https://doi.org/10.11648/j.avs.20150301.13
AB  - Clinical trial was carried out to evaluating the effects of GNRH analogue (buserelin acetate) along with AI in repeat breeding cross breed cows on enhancement of pregnancy. The trial was also aimed at evaluation of dose variation on conception rate. Sixty six cross breed dairy cattle which were apparently healthy, exhibits estrus regularly were selected and assigned randomly in to three equal groups(A,B and C); two treated groups and one control group. Group A (n=22) cattle were injected intramuscularly a 20 µg buserelin acetateat along with AI and Group B (n=22) cattle have injected with dose of 10µg Buserelin acetate. Group C (n=22) cattle were receive no treatment and considered as a control group, given a single service. These cows were examined for pregnancy after three months through rectal palpation. Additional history was taken from herd owners. The pregnancy rates recorded were 68%, 59% and 32% in the cattle grouped with A, B and C respectively. The conception rates of the treated groups exceeds control group by 36% and 27% respectively. Treated groups showed a significant statistical variation (P<0.05) as compared to control group. Dose variation between two treated groups has an effect on pregnancy rate with significant variation. Other observed finding was that treated first and second parity cows became more responsive to therapy than those with more than two parity with a significant variation (P<0.05). The study revealed that the use of GNRH analogue therapy at the time of AI can enhance pregnancy rate. This would be helpful and cost effective to minimize financial losses incurred from milk production loss, managmental and feed cost. This might be achieved through reducing calving interval and treating repeat breeding cases. The benefit cost ratio indicates that individual cow could benefit small holder farmer by 140 USD within a single month.
VL  - 3
IS  - 1
ER  - 

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