Nanotechnology and reproductive management of farm animals: Challenges and advances

NM Hashem, A Gonzalez-Bulnes - Animals, 2021 - mdpi.com
Simple Summary The emergence of nanotechnology paves the way for innovating countless
applications in the agricultural and livestock production sector. In the field of reproductive …

Effect of GnRH treatment on ovarian activity and reproductive performance of low-prolific Rahmani ewes

NM Hashem, KM El-Azrak, ANMN El-Din, TA Taha… - Theriogenology, 2015 - Elsevier
This study was designed to evaluate the effect of GnRH treatment during different times of
the reproductive cycle on ovarian activity, progesterone (P 4) concentration, and subsequent …

Use of GnRH-encapsulated chitosan nanoparticles as an alternative to eCG for Induction of estrus and ovulation during non-breeding season in sheep

NM Hashem, AS El-Hawy, MF El-Bassiony… - Biology, 2023 - mdpi.com
Simple Summary Sheep are seasonal polyestrus breeders, and applying intensive breeding
systems requires effective estrus induction protocols. Commonly, progesterone-equine …

Effects of season and ovarian status on the outcome of long-term progesterone-based estrus synchronization protocols and ovulatory follicle development in Santa …

MEF Oliveira, H Ayres, LG Oliveira, FFPC Barros… - Theriogenology, 2016 - Elsevier
This study set out to investigate the efficiency of long-term estrus synchronization protocols
and ovulatory follicle dynamics in ultrasonographically monitored Santa Inês ewes during …

Temperature and rainfall are related to fertility rate after spring artificial insemination in small ruminants

JA Abecia, F Arrébola, A Macías, A Laviña… - international Journal of …, 2016 - Springer
A total number of 1092 artificial inseminations (AIs) performed from March to May were
documented over four consecutive years on 10 Payoya goat farms (36° N) and 19,392 AIs …

Meteorological variables affect fertility rate after intrauterine artificial insemination in sheep in a seasonal-dependent manner: a 7-year study

C Palacios, JA Abecia - international Journal of Biometeorology, 2015 - Springer
A total number of 48,088 artificial inseminations (AIs) have been controlled during seven
consecutive years in 79 dairy sheep Spanish farms (41° N). Mean, maximum and minimum …

Genetic screening of FecB, FecXG and FecXI mutations and their linkage with litter size in Barki and Rahmani sheep breeds

AS El‐Seedy, NM Hashem, KM El‐Azrak… - … in Domestic Animals, 2017 - Wiley Online Library
Contents Characterization of fecundity genes offers the opportunity to improve production
efficiency, and the consequent increase in litter size in livestock industry, through utilizing …

Effect of short‐term supplementation with rumen‐protected fat during the late luteal phase on reproduction and metabolism of ewes

NM Hashem, SZ El‐Zarkouny - Journal of animal physiology …, 2014 - Wiley Online Library
This study was designed to study the effect of short‐term supplementation with rumen‐
protected fat during the late luteal phase on reproduction and metabolism of sheep during …

Effects of Trifolium alexandrinum phytoestrogens on oestrous behaviour, ovarian activity and reproductive performance of ewes during the non-breeding season

NM Hashem, KM El-Azrak, ANMN El-Din… - Animal reproduction …, 2018 - Elsevier
Phytoestrogens are classified as naturally occurring endocrine disrupting chemicals that
may affect reproductive performance of farm animals. To investigate the effects of Berseem …

Effect of vitamin A or C on physiological and reproductive response of Rahmani ewes during subtropical summer breeding season

NM Hashem, D Abd-Elrazek, ZR Abo-Elezz… - Small Ruminant …, 2016 - Elsevier
In the present study, 33 Rahmani ewes were equally divided into 3 groups: 1. Control group
(non-treated ewes); 2. Vitamin A-group (supplemented orally one capsule containing 50 000 …