Results 31 to 40 of about 1,913,404 (378)

Beneficial Effects of Nitric Oxide Induced Mild Oxidative Stress on Post-Thawed Bull Semen Quality [PDF]

open access: yesInternational Journal of Fertility and Sterility, 2015
Background Cryopreservation of semen requires optimized conditions to minimize the harmful effects of various stresses. The main approach for protection of sperm against stress is based on the use of antioxidants and cryoprotectants, which are described ...
Mohsen Sharafi   +3 more
doaj   +1 more source

Glutathione and selenium nanoparticles have a synergistic protective effect during cryopreservation of bull semen

open access: yesFrontiers in Veterinary Science, 2023
IntroductionIn the present study, the synergistic protective effect of co-supplementation of glutathione (GSH) with selenium nanoparticles (SeNPs) on the cryopreservation efficiency of bull semen was analyzed.MethodsAfter collection, the ejaculates of ...
Shubin Li   +7 more
doaj   +1 more source

Uncovering sperm metabolome to discover biomarkers for bull fertility

open access: yesBMC Genomics, 2019
Subfertility decreases the efficiency of the cattle industry because artificial insemination employs spermatozoa from a single bull to inseminate thousands of cows.
E. Menezes   +9 more
semanticscholar   +1 more source

Comparison of two reef sites on the north coast of Jamaica over a 15-year period [PDF]

open access: yes, 2016
This paper compares two reef sites near Discovery Bay, Jamaica, Dairy Bull and Dancing Lady, from 2000 to 2015. At Dairy Bull reef, with low macroalgal cover (8% in 2002 falling to 1% in 2015) and significant number of Diadema antillarum urchins (c.
Crabbe, M. James C.
core   +1 more source

Memoria y traición femenina en la ficción y el testimonio

open access: yesKamchatka: Revista de Análisis Cultural, 2015
Resumen: El artículo analiza la representación de las mujeres que, habiendo formado parte de la militancia de izquierda en los setenta, pasó a colaborar con los organismos represivos después de haber sido sometidas a una tortura extrema.
Bernardita Llanos
doaj   +1 more source

Selection for bull fertility: a review

open access: yesTranslational Animal Science, 2019
Fertility is a critically important factor in cattle production because it directly relates to the ability to produce the offspring necessary to offset costs in production systems.
M. Butler   +4 more
semanticscholar   +1 more source

A note on spherical functors [PDF]

open access: yes, 2021
We provide a new and very short proof of the fact that a spherical functor between certain triangulated categories induces an autoequivalence.Comment: Final version. Accepted for publication in Bull. Lond.
Meachan, Ciaran
core   +2 more sources

Insights from Koala–Cattle Interaction Experiments: Koalas and Cattle May See Each Other as a Disturbance

open access: yesAnimals, 2022
Koalas are facing many threats and have now been officially listed as endangered. Recently, concerns were raised in anecdotal reports of koalas being killed by livestock, especially cattle.
Alex Zijian Jiang   +3 more
doaj   +1 more source

Sperm miRNAs— potential mediators of bull age and early embryo development

open access: yesBMC Genomics, 2020
Sperm miRNAs were reported to regulate spermatogenesis and early embryonic development in some mammals including bovine. The dairy cattle breeding industry now tends to collect semen from younger bulls under high selection pressure at a time when semen ...
Chongyang Wu   +4 more
semanticscholar   +1 more source

Calculation of multiple-trait sire reliability for traits included in a dairy cattle fertility index [PDF]

open access: yes, 2004
The advent of genetic evaluations for fertility traits in the UK offers valuable information to farmers that can be used to control fertility problems and safeguard against involuntary culling.
Banos, Georgios   +5 more
core   +1 more source

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