Pivotal periods for pregnancy loss during the first trimester of gestation in lactating dairy cows

MC Wiltbank, GM Baez, A Garcia-Guerra, MZ Toledo… - Theriogenology, 2016 - Elsevier
Loss of pregnancy can occur at many different stages of gestation and for a variety of causes
but clearly produces a negative impact for reproductive and economic performances of dairy …

Pregnancy losses in cattle: potential for improvement

MG Diskin, SM Waters, MH Parr… - Reproduction, Fertility …, 2016 - CSIRO Publishing
For heifers, beef and moderate-yielding dairy cows, it appears that the fertilisation rate
generally lies between 90% and 100%. For high-producing dairy cows, there is a less …

[图书][B] Mineral nutrition of livestock

N Suttle - 2022 - cabidigitallibrary.org
The physiological functions; pathogenesis, clinical signs, diagnosis, treatment and
prevention of copper deficiency disorders; sources; copper content in feeds and forage; …

[HTML][HTML] The role of progesterone and conceptus-derived factors in uterine biology during early pregnancy in ruminants

TE Spencer, N Forde, P Lonergan - Journal of dairy science, 2016 - Elsevier
This review integrates established and new information on the role of progesterone,
interferon tau (IFNT), and prostaglandins in uterine biology of ruminants. Establishment of …

[HTML][HTML] Effect of a second treatment with prostaglandin F2α during the Ovsynch protocol on luteolysis and pregnancy in dairy cows

MC Wiltbank, GM Baez, F Cochrane, RV Barletta… - Journal of dairy …, 2015 - Elsevier
The main objective of this study was to evaluate the effect of a second treatment with
prostaglandin F 2α (PGF) during Ovsynch on regression of the corpus luteum (CL) and on …

Development of fertility programs to achieve high 21-day pregnancy rates in high-producing dairy cows

PD Carvalho, VG Santos, JO Giordano, MC Wiltbank… - Theriogenology, 2018 - Elsevier
Our objective is to overview the research that lead to the development of fertility programs for
high-producing lactating dairy cows using only GnRH and Prostaglandin F 2α (PGF 2α) …

Interferon-tau and fertility in ruminants

N Forde, P Lonergan - Reproduction, 2017 - rep.bioscientifica.com
Establishment of pregnancy in domestic ruminants includes pregnancy recognition
signalling by the conceptus, implantation and placentation. Despite the high fertilisation …

[HTML][HTML] Symposium review: Progesterone effects on early embryo development in cattle

P Lonergan, JM Sánchez - Journal of dairy science, 2020 - Elsevier
The causes of low fertility in dairy cattle are complex and multifactorial and may be due to
compromised follicle development affecting oocyte quality, a suboptimal reproductive tract …

Role of progesterone in embryo development in cattle

P Lonergan, N Forde, T Spencer - Reproduction, Fertility and …, 2016 - CSIRO Publishing
Progesterone (P4) from the corpus luteum is critical for the establishment and maintenance
of pregnancy and plays a major role in regulating endometrial secretions essential for …

Mechanisms underlying reduced fertility in anovular dairy cows

JEP Santos, RS Bisinotto, ES Ribeiro - Theriogenology, 2016 - Elsevier
Resumption of ovulation after parturition is a coordinated process that involves recoupling of
the GH/insulin-like growth factor 1 axis in the liver, increase in follicular development and …