Results 11 to 20 of about 651 (133)

Fertility of Crossbred Dairy Cattle After Progesterone-Supplemented Co-Synch in Southwestern Ethiopia. [PDF]

Vet Med Int
In Ethiopia, the reproductive efficiency of dairy cattle utilizing artificial insemination (AI) is low, and implementing estrus and ovulation synchronization protocols could enhance the efficiency. Therefore, this study was designed to evaluate the effect of progesterone (P4) supplementation during Co‐Synch on estrus response (ER) and pregnancy per AI (
Dodicho AA, Gebeyehu ST, Kidane ZY.
europepmc   +2 more sources

PREVALENCE, DIAGNOSTICS AND TREATMENT OF OVARIAN FOLLICULAR CYSTS IN DAIRY COWS [PDF]

Trakia Journal of Sciences, 2019
Ovarian cysts are among the primary causes for poor reproduction efficiency and economic losses in dairy cattle farming. Material and metods: The studies were performed in 2015-2017 in three dairy cattle farms.In the experiment, 79 cows with follicular ...
G. Naglis
doaj   +1 more source

The effect of different FSH administration before ovum pick up on superstimulation response and oocyte yield

Reproduction in Domestic Animals, Volume 58, Issue 8, Page 1055-1062, August 2023., 2023
Abstract This study aims to evaluate the effect of synchronization and different superstimulation protocols on oocyte yield before ovum‐pick up (OPU) to provide a homogeneous follicle population. Animals in all study groups except the control group applied a synchronization protocol including modified ovsynch+progesterone and dominant follicle ablation
Muhammed Furkan Ciftci, Dursun Ali Dinc
wiley   +1 more source

Effects of daily propylene glycol drenching during the Ovsynch protocol on fertility and metabolic parameters in lactating dairy cows

Reproduction in Domestic Animals, Volume 58, Issue 8, Page 1097-1103, August 2023., 2023
Abstract Negative energy balance (NEB) caused by restricted feed intake leads to body condition loss (BCS), increased metabolic stress and reduced fertility in dairy cows. Propylene glycol (PG) is a precursor of ruminal propionate for gluconeogenesis used to increase metabolic adaptation to the early postpartum period.
Rabia Cakircali, Ebru Karakaya‐Bilen, Baris Guner, Zafer Mecitoglu, Cihan Tolga Ortac, Abdulkadir Keskin, Abdulkadir Orman, Ahmet Gümen   +7 more
wiley   +1 more source

Effects of fresh‐cow grouping strategy and rumen‐protected glucose on production performance, reproductive variables and risk of culling in Holstein cows

Veterinary Medicine and Science, Volume 9, Issue 3, Page 1338-1348, May 2023., 2023
We hypothesized that a faster transition (14 versus 21 days) from a fresh‐cow diet (higher forage:concentrate) to a lactation diet (lower forage:concentrate), combined by a greater glucose supply at the intestinal level during the fresh period will have a positive long‐term effect on productivity of high‐producing Holsteins.
H. Beiranvand, F. Ahmadi, S. Babajanzade‐Sorati, Ali A. Alamouti   +3 more
wiley   +1 more source

Application of gender‐ablated semen during timed artificial insemination following oestrous synchronization in dairy and beef cows

Reproduction in Domestic Animals, Volume 58, Issue 4, Page 529-536, April 2023., 2023
Abstract The objectives of this study were to compare oestrous synchronization expression and conception rate following timed artificial insemination (TAI) with frozen–thawed X‐sexed or unsexed semen in dairy and beef cows. For this study, 227 cows (dairy, n = 130 and beef, n = 97) were assigned to a 9‐day Ovsynch + controlled intravaginal drug release
Thabang Luther Magopa, Masindi Lottus Mphaphathi, Thendo Mulaudzi   +2 more
wiley   +1 more source

Efecto en la eficiente reproductiva mediante el uso de dos protocolos (eCG y Ovsynch) para IATF en ganado bovino tropical

Revista de Veterinaria y Zootecnia Amazónica, 2023
La situación económica mundial requiere de prácticas de manejo eficaces para mejorar la rentabilidad de los establecimientos de producción de leche, especialmente, en ganadería de trópico. El objetivo es demostrar el efecto en la eficiencia reproductiva
Hugo Sánchez-Cárdenas, Pedro Vargas-Rodríguez   +1 more
doaj   +1 more source

Effect of oestrus synchronisation through ovulation delay by vaccination against foot‐and‐mouth disease in Hanwoo (Bos taurus coreanae) cows

Veterinary Medicine and Science, Volume 9, Issue 2, Page 974-981, March 2023., 2023
The purpose of this study is to improve the fertility rate by ovulation delay caused by foot‐and‐mouth disease vaccination. We figure out that ovulation delay can be employed to improve conception rate after FMD vaccination through a modified ovulation synchronization method with 500 μg of GnRH administration.
Daehyun Kim, Woo‐Sung Kwon, Jaejung Ha, Jaejo Kim, Danil Kim, Wonyou Lee, Joonho Moon, Junkoo Yi   +7 more
wiley   +1 more source

Ultrasonographic patterns of different regions of uterus according to pregnancy in cows and heifers

Animal Science Journal, Volume 94, Issue 1, January/December 2023., 2023
Abstract This study aimed to detect pregnancy within the first 20 days after artificial insemination by evaluating the ultrasonographic patterns of the different regions of uterus in Holstein heifers and cows. Animals were divided into subgroups according to pregnancy on 28th day as pregnant (heifer, n: 15; cow, n: 15) and non‐pregnant (heifer, n: 15 ...
Kemal Tuna Olğaç, Murat Onur Yazlik, Ufuk Kaya, Mehmet Borga Tirpan   +3 more
wiley   +1 more source

EFFECT OF DOUBLE OR PRE-SYNCHRONIZATION OVSYNCH PROTOCOLS ON FOLLICULAR DYNAMICS, PROGESTERONE PROFILE AND FIRST SERVICE PREGNANCY RATE IN TIMED ARTIFICIAL INSEMINATION IN FRIESIAN COWS [PDF]

Journal of Animal and Poultry Production, 2015
Aim of this study was to determine the effect of double-Ovsynch (DO) and pre-synchronization (PS) protocols on ovarian follicular dynamics, progesterone (P4) concentration and pregnancy rate at first postpartum AI in Friesian cows.
M. Omar, M. El-Banna, M. El-Harairy
doaj   +1 more source