Results 21 to 30 of about 651 (133)

Effect of Different Protocols of Fixed‐Time Artificial Insemination on Mucus, Ovarian Size, and Pregnancy of Mixed‐Breed Cows in the Humid Tropics of Peru

Veterinary Medicine International, Volume 2023, Issue 1, 2023., 2023
The objective of the research was to evaluate three synchronization protocols for fixed‐time artificial insemination (FTAI) in Bos indicus with Bos taurus crossbred cows. Forty‐five cows of 5 ± 1.6 years were selected. The Jsynch treatment consisted of the application of an intravaginal device plus benzoate; on day 8, the device was removed and PGF2α ...
Clavel Diaz-Quevedo, Alonso Ramírez García, Lenin Torres Bernal, Jorge Cáceres Coral, Gustavo Ampuero Trigoso, José Américo Saucedo-Uriarte, Sumanta Nandi   +6 more
wiley   +1 more source

Comparison of the initial ovarian response, the synchrony of oestrus and ovulation and chronic stress response after administration of 100 or 250 μg of GnRH to randomly cycling Bos indicus cattle

Australian Veterinary Journal, Volume 100, Issue 10, Page 479-491, October 2022., 2022
Objective This study investigated the effects of administering saline, 100 or 250 μg of gonadotrophin releasing hormone (GnRH) on ovarian response, synchrony of oestrus and ovulation and chronic stress response in Bos indicus cattle. Design Randomised control.
M Abdallah, C Joone, S Edwards, S Das, J Cavalieri   +4 more
wiley   +1 more source

Current status of assisted reproductive technologies in buffaloes

Animal Science Journal, Volume 93, Issue 1, January/December 2022., 2022
Abstract Buffaloes are raised by small farm holders primarily as source of draft power owing to its resistance to hot climate, disease, and stress conditions. Over the years, transformation of these animals from draft to dairy was deliberately carried out through genetic improvement program leading to the development of buffalo‐based enterprises ...
Kanokwan Srirattana, Danilda Hufana‐Duran, Eufrocina P. Atabay, Peregrino G. Duran, Edwin C. Atabay, Kehuan Lu, Yuanyuan Liang, Thuchadaporn Chaikhun‐Marcou, Kasem Theerakittayakorn, Rangsun Parnpai   +9 more
wiley   +1 more source

Effects of age and season on conception rate of Mediterranean Italian Dairy Buffalo (Bubalus bubalis) following oestrus synchronization and fixed‐time artificial insemination

Reproduction in Domestic Animals, Volume 56, Issue 12, Page 1511-1518, December 2021., 2021
Abstract The objective of this project was to report the effects of season and age on conception rate amongst Italian Mediterranean Buffalo subjected to an Ovsynch/Resynch (O/R) reproductive management protocol. The study utilized nulliparous (heifers), primiparous buffalo cows (PBC) and multiparous buffalo cows (MBC).
Gabriel Otava, Stefano Squicciarini, Simona Marc, Tijana Suici, Gary William Onan, Ioan Hutu, Iuliu Torda, Calin Mircu   +7 more
wiley   +1 more source

Effect of progestagen application during ovsynch protocol on pregnancy rates of lactating-grazing cows [PDF]

Kafkas Universitesi Veteriner Fakültesi Dergisi, 2017
The aim of this study was to test the effect of progesterone supplementation to Ovsynch protocol in lactating and grazing cows on pregnancy rate after fixed time artificial insemination (TAI).
ARI UÇ, PANCARCI ŞM, KAÇAR C, GÜNGÖR Ö, LEHİMCİOĞLU NC, ÖZTÜRKLER Y, YILDIZ S   +6 more
doaj   +1 more source

The effect of prostaglandin and gonadotrophins (GnRH and hCG) injection combined with the ram effect on progesterone concentrations and reproductive performance of Karakul ewes during the non‐breeding season

Veterinary Medicine and Science, Volume 7, Issue 1, Page 148-155, January 2021., 2021
The administration of prostaglandin and hCG in combination with the ram effect may reduce lambing period and tended to increase lambing rate at the first cycle during the non‐breeding season. Administrations of double injection of GnRH not only had no effect on the progesterone concentrations but also couldn’t improve the reproductive performance of ...
Mohammad Ayaseh, Abdolah Mirzaei, Alidad Boostani, Mansur Mehrvarz   +3 more
wiley   +1 more source

Efficacy of different estrus synchronization protocols in repeat breeder cows

Indian Journal of Animal Sciences, 2019
The work was conducted in 272 repeat breeder cows diagnosed with functional form of infertility, i.e. luteal insufficiency and ovulatory defects. The objective of present study was to evaluate the efficacy of synchronization protocols in functionally ...
MADHUMEET SINGH, AKSHAY SHARMA, SUPRIYA KAPSE, AMIT KASHYAP, PRAVESH KUMAR   +4 more
doaj   +1 more source

Eficácia do tratamento Ovsynch associado à inseminação artificial prefixada em rebanhos Bos taurus e Bos indicus [PDF]

Pesquisa Agropecuária Brasileira, 2003
O presente trabalho objetivou avaliar a eficácia do tratamento Ovsynch associado à inseminação artificial em tempo prefixado em vacas Bos taurus e Bos indicus. Foram utilizados rebanhos das raças Holandesa, Caracu, Nelore e Mantiqueira.
Rafael Herrera Alvarez, Antonio Campanha Martinez, João Batista Pereira de Carvalho, Juliana Rodrigues Pozzi Arcaro, Rita Maria Ladeira Pires, Cláudio Alvarenga de Oliveira   +5 more
doaj   +1 more source

Modifications of the G6G timed-AI protocol improved pregnancy per AI and reduced pregnancy loss in lactating dairy cows

Animal, 2017
In dairy cows, subjected to a G6G protocol, objectives were to determine effects of (1) extending the interval from prostaglandin F2α (PGF2α) to gonadotropin-releasing hormone (GnRH) during presynchronization; and (2) adding a second PGF2α treatment ...
F. Heidari, E. Dirandeh, Z. Ansari Pirsaraei, M.G. Colazo   +3 more
doaj   +1 more source

Effect of Dalmavital and Ovulik Plus on conception rate in Ovsynch synchronized Nili-Ravi buf- faloes

Revista Científica, 2023
Nili-Ravi buffalo are known as the “Black Gold of Pakistan”. It is the most prized dairy animal in Pakistan. Silent estrus and shy behavior are among the main causes of poor reproductive efficiency in buffalo, leading to prolonged calving intervals ...
Muhammad Tayyab Khan, Muhammad Muzammal Niaz , Ghulam Shabbir Khan   +2 more
doaj   +1 more source