Fertilization Rates Obtained with Boar Semen Stored for Zero and Twelve Hours

1958 ◽  
Vol 17 (3) ◽  
pp. 598-603 ◽  
Author(s):  
Frederick W. Stratman ◽  
H. L. Self ◽  
Vearl R. Smith
Keyword(s):  
Fertilization Rates ◽  
Boar Semen

Castorbean Yield and Quality as Influenced by Irrigation Schedules and Fertilization Rates 1

1967 ◽  
Vol 59 (5) ◽  
pp. 463-467 ◽  
Author(s):  
D. L. Kittock ◽  
J. H. Williams ◽  
D. G. Hanway
Keyword(s):  
Fertilization Rates ◽  
Yield And Quality

scholarly journals Cluster analysis reveals seasonal variation of sperm subpopulations in extended boar semen

2018 ◽  
Vol 64 (1) ◽  
pp. 33-39 ◽  
Author(s):  
Iulian IBĂNESCU ◽  
Claus LEIDING ◽  
Heinrich BOLLWEIN
Keyword(s):  
Cluster Analysis ◽  
Seasonal Variation ◽  
Boar Semen

Fertilization Rates of South Texas Deer

1973 ◽  
Vol 37 (2) ◽  
pp. 179 ◽  
Author(s):  
John C. Barron ◽  
William F. Harwell
Keyword(s):  
South Texas ◽  
Fertilization Rates

scholarly journals Zeolite and Vermiculite as Inorganic Soil Amendments Modify Shoot-Root Allocation, Mineral Nutrition, Photosystem II Activity and Gas Exchange Parameters of Chestnut (Castanea sativa Mill) Plants

Agronomy ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 109
Author(s):  
Theocharis Chatzistathis ◽  
Evgenia Papaioannou ◽  
Anastasia Giannakoula ◽  
Ioannis E. Papadakis
Keyword(s):  
Nutrient Management ◽  
Soil Amendments ◽  
Castanea Sativa ◽  
Gas Exchange Parameters ◽  
Soil P ◽  
Fertilization Rates ◽  
Sustainable Nutrient Management ◽  
Castanea Sativa Mill ◽  
High Fertilization ◽  
Exchange Parameters

One of the most challenging topics for the sustainable agriculture is how to decrease high fertilization rates. A pot experiment, exploring the effects of zeolite (ZEO) and/or vermiculite (VER) as soil amendments, comparing to the soil application of a controlled release fertilizer (CRF), was realized in chestnut plants. Various parameters related to soil fertility, and plant growth, nutrition, and physiology were investigated to gain knowledge towards more sustainable management. After ZEO application and in comparison to CRF, an impressive boost in soil K was achieved. Moreover, soil P and Zn levels were higher in the VER-treated soil, compared to CRF. Leaf K and Ca concentrations were significantly higher in ZEO, compared to the VER treatment; the highest foliar N and Zn concentrations were measured in CRF and VER, respectively. However, significantly lower foliar Mn and Cu were found in VER. The highest root biomass produced in the ZEO treated plants. For most nutrients, their total uptake per plant was higher in CRF and ZEO. Finally, photosynthetic rates were higher in VER (mainly due to non-stomatal factors) and CRF (mainly due to stomatal factors). Our data open a discussion towards the application of ZEO and/or VER as soil amendments in chestnut nurseries and orchards, aiming at partially decreasing fertilization rates and boosting sustainable nutrient management.

scholarly journals Male-derived copulatory plugs enhance implantation success in female Mus musculus†

2020 ◽  
Author(s):  
Lough-Stevens Michael ◽  
Caleb Ghione ◽  
Matthew Urness ◽  
Adelaide Hobbs ◽  
Colleen Sweeney ◽  
...  
Keyword(s):  
Mus Musculus ◽  
Genetically Engineered ◽  
Fertilization Rates ◽  
Copulatory Plug ◽  
Female Remating ◽  
Implantation Rates ◽  
Transfer Method ◽  
Copulatory Plugs ◽  
Threshold Amount ◽  
Implantation Success

Abstract Among a wide diversity of sexually reproducing species, male ejaculates coagulate to form what has been termed a copulatory plug. A number of functions have been attributed to copulatory plugs, including, but not limited to, the inhibition of female remating and the promotion of ejaculate movement. Here we demonstrate that copulatory plugs also influence the likelihood of implantation, which occurs roughly four days after copulation in mice. Using a bead transfer method to control for differences in ejaculate retention and fertilization rates, we show that implantation rates significantly drop among females mated to genetically engineered males incapable of forming plugs (because they lack functional TGM4, the main enzyme responsible for its formation). Surprisingly, this result does not correlate with differences in circulating progesterone levels among females, an important hormone involved in implantation. In this paper we discuss three models that connect male-derived copulatory plugs to implantation success, including the hypothesis that plugs contribute to a threshold amount of stimulation required for females to become receptive to implantation.

Fertility with antibiotic-free preserved boar semen under standardized field conditions

2020 ◽  
Vol 220 ◽  
pp. 106410
Author(s):  
Helen Jäkel ◽  
Rafael Gianluppi ◽  
Matheus Schardong Lucca ◽  
Ana Paula Mellagi ◽  
Rafael Rosa Ulguim ◽  
...  
Keyword(s):  
Field Conditions ◽  
Boar Semen
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