Results 81 to 90 of about 1,160,159 (320)

Genetic evaluation of Frieswal cattle for first lactation milk yield from smallholder dairy production systems in Kerala, India

open access: yesIndian Journal of Animal Sciences, 2023
The present investigation was undertaken to determine the genetic worth of Frieswal (62.5% HF × 37.5% Sahiwal) young bulls through progeny testing under field conditions in Kerala state, India.
A K DAS   +9 more
doaj   +1 more source

Sperm‐Derived CircRNA‐1572 Regulates Embryogenesis and Zygotic Genome Activation by Targeting CCNB2 via Bta‐miR‐2478‐L‐2

open access: yesAdvanced Science, EarlyView.
Sperm‐derived circRNA‐1572 competitively binds to bta‐miR‐2478‐L‐2 through a “sponge” mechanism to regulate cyclin B2 (CCNB2) expression, thereby modulating the distribution of fibrous actin (F‐actin) in early pig embryos, ensuring proper chromosome segregation during mitosis, and facilitating normal embryo cleavage and zygotic genome activation.
Yanfang Wu   +10 more
wiley   +1 more source

Chlamydiae – what’s new?

open access: yesJournal of Veterinary Research, 2020
This paper provides an overview of the current knowledge of chlamydiae. These intracellular microorganisms belonging to the Chlamydiaceae family are widely distributed throughout the world.
Zaręba-Marchewka Kinga   +2 more
doaj   +1 more source

Are herders protected by their herds? An experimental analysis of zooprophylaxis against the malaria vector Anopheles arabiensis [PDF]

open access: yes, 2011
Background The number of Anopheles arabiensis (Diptera: Culicidae) and Anopheles pharoensis caught by human and cattle baits was investigated experimentally in the Arba Minch district of southern Ethiopia to determine if attraction to humans, indoors ...
Gibson, Gabriella   +3 more
core   +4 more sources

An estimation of cattle movement parameters in the Central States of the US [PDF]

open access: yesarXiv, 2014
The characterization of cattle demographics and especially movements is an essential component in the modeling of dynamics in cattle systems, yet for cattle systems of the United States (US), this is missing. Through a large-scale maximum entropy optimization formulation, we estimate cattle movement parameters to characterize the movements of cattle ...
arxiv  

Origins, Dispersal, and Impact: Bidirectional Introgression Between Chinese and European Pig Populations

open access: yesAdvanced Science, EarlyView.
This study investigates bidirectional introgression between Chinese and European pig populations, revealing 3558 introgressed genomic segments and 30 structural variations. Analysis of the BMP2 region suggests its role in body size enhancement. By integrating ancient and modern genomes, the study highlights the impact of introgression on genetic ...
Yibin Qiu   +19 more
wiley   +1 more source

Elements of IPM for Dairy Cattle in New York State [PDF]

open access: yes, 2020
NYS IPM Type: Livestock IPM ElementsThis is a checklist of items to help you develop or analyze whether you use IPM for flies in your dairy operation. If the IPM practice listed below is used across the farm then check it off and give yourself the all ...
Waldron, Keith, Wise, Ken
core  

Efficiency of low versus high airline pressure in stunning cattle with a pneumatically powered penetrating captive bolt gun [PDF]

open access: yes, 2017
The efficiency of stunning cattle was assessed in 443 animals (304 pure Zebu and 139 crossbred cattle), being mainly mature bulls and cows. Cattle were stunned using a Jarvis pneumatically powered penetrating captive bolt gun operating with low (160–175 ...
Costa, F A D   +4 more
core   +1 more source

Counting Cows: Tracking Illegal Cattle Ranching From High-Resolution Satellite Imagery [PDF]

open access: yesarXiv, 2020
Cattle farming is responsible for 8.8\% of greenhouse gas emissions worldwide. In addition to the methane emitted due to their digestive process, the growing need for grazing areas is an important driver of deforestation. While some regulations are in place for preserving the Amazon against deforestation, these are being flouted in various ways, hence ...
arxiv  

Modeling the Role that Habitat Overlap Shape has on the Spread of Brucellosis in the Greater Yellowstone Ecosystem [PDF]

open access: yesarXiv, 2022
Brucellosis is a zoonotic bacterial infectious disease that affects livestock and wildlife. The Greater Yellowstone Ecosystem is the last area in the United States where cattle are regularly infected with brucellosis. Even though livestock are vaccinated, interactions with reservoir species still result in spill-over cases to cattle.
arxiv  

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