Zobrazeno 1 - 10
of 13
pro vyhledávání: '"72"'
Autor:
G. Tortorelli, R. dos Santos Ramos, M. A. da Silva Menon, C. da Costa Carrer, A. S. Moraes, A. J. Azrak, M. R. Bastos, V. da Costa Andrade
Publikováno v:
Reproduction, Fertility and Development. 29:143
Progesterone plays an important role in the maintenance of pregnancy. It is hypothesised that insufficient progesterone early in pregnancy may result in embryonic loss, and that supplemental progesterone would decrease pregnancy loss in dairy cows. T
Publikováno v:
Reproduction, Fertility and Development. 28:135
We have shown that inclusion of initial gonadotropin-releasing hormone (GnRH) in a 5-day Co-synch protocol is unnecessary to achieve acceptable pregnancy rates in dairy heifers (2011 Theriogenology 76, 578). This study determined the efficacy of a mo
Publikováno v:
Reproduction, Fertility and Development. 27:96
An oestradiol-based protocol (named J-Synch) has been developed recently with the aim of providing for a longer proestrus, enhancing the development of the dominant follicle before ovulation, and increasing pregnancy rates following fixed-time AI (FT
Autor:
T. Oikawa, T. Kurahara, S. Hiraizumi, O. Ishiyama, O. Nishino, F. Sano, K. Ooishi, N. Nishimoto, H. Nishinomiya, M. Yamamoto, Y. Hashiyada, N. Sakagami
Publikováno v:
Reproduction, Fertility and Development. 23:256
The objective of this study was to evaluate the superovulatory response to a single SC administration of pFSH (Antrin R-10) dissolved in saline in Japanese Black cattle. Forty Japanese Black cows were divided into 5 groups. All cows received a proges
Publikováno v:
Reproduction, Fertility and Development. 19:308
It is necessary to control the sex ratio (percentage of females) of pre-implantation embryos in the dairy industry. Several studies indicate that, in cattle, varying insemination time does not influence the embryo sex ratio (Rorie et al. 1999 Theriog
Autor:
G. M. K. Mehaisen, A. O. Abbas
Publikováno v:
Reproduction, Fertility and Development. 29:155
The aim of this study was to investigate the effect of a rearing-fasting program as an alternative bio-stimulation method to hormonal eCG treatments on the embryo recovery of rabbit females. A total number of 119 nulliparous New Zealand White rabbit
Publikováno v:
Reproduction, Fertility and Development. 27:101
The aim of the present study was comparing between the efficiency of FGA-30 (intravaginal polyurethane sponges impregnated with 30 mg of flurogestone acetate; Synchropart®, Ceva Sante, Animale, France) and EAZI-Breed™ CIDR® (an inert silicone ela
Publikováno v:
Reproduction, Fertility and Development. 26:119
A study investigated the effect of AI timing on pregnancy rate when using X sorted semen, and whether prostaglandin F2α (PGF2) injection on Day 7 of a modified 14-day progesterone (P4) protocol improved oestrous response in beef cows. Angus-based co
Autor:
Felipe Zandonadi Brandão, W. J. Silva, J. M. G. Souza, João Herbert Moreira Viana, A. L. R. S. Maia, Olivardo Facó, R. Denadai, Jeferson Ferreira da Fonseca, J. H. Bruschi
Publikováno v:
Reproduction, Fertility and Development. 22:169
Depending on the season, estrus can be efficiently induced using male effect, melatonin implants, light controlled programs, prostaglandin, progestagens, and gonadotrophins. The eCG is the most used hormone employed in estrus induction protocols in g
Autor:
J. Larson, M.-J. Thatcher, William W. Thatcher, Carlos A. Risco, Fabio S. Lima, S. A. Woodall
Publikováno v:
Reproduction, Fertility and Development. 20:90
The objectives of the present series of experiments were to develop a timed artificial insemination (TAI) program for dairy heifers and to utilize a TAI program to evaluate the effect of flunixin meglumine (Banamine�; Schering-Plough Animal Health