Results 51 to 60 of about 11,071 (289)
Disrupting the herd: Recreational boating alters group dispersion within beluga whale herds
The Journal of Wildlife Management, EarlyView.Recreational boating in beluga habitat remains poorly documented. Using land‐based observations in the Saguenay Fjord (Quebec, Canada), we show that increasing recreational boat numbers are associated with a higher probability of changes in beluga herd dispersion, suggesting behavioral disturbance and the need to integrate recreational boating into ...
Camille Kowalski +4 more
wiley +1 more source
Limnology and Oceanography: Methods, EarlyView.Abstract Understanding a population's distribution depends on observing the presence and movement of individuals throughout their range. For highly mobile marine species, these observations typically rely on high effort monitoring programs. Tracking enough individuals to understand trends in movement behavior is not always logistically feasible, and ...
Abigail M. Kreuser +3 more
wiley +1 more source
Familiarity and aggression shape long‐term associations and mortality risk in a solitary ungulate
Oikos, EarlyView.Periodic social interactions are important to animal fitness, even in solitary species. For solitary species, these interactions can be unexpected and shaped by previous encounters. Despite being aggressive and largely solitary, black rhinoceroses Diceros bicornis are commonly seen in groups, suggesting they may engage in more social behaviours than ...
Rachel M. Stein, Adrian M. Shrader
wiley +1 more source
GENETIC AND PHENOTYPIC CORRELA TIONS FOR SOME ECONOMIC TRAITS IN DAIRY CATTLE
Pakistan Veterinary Journal, 2001 Data on lactation records of 1113 purebred Sahiwal and 784 Holstein Friesian X Sahiwal (FS) and Jersey X Sahiwal (JS) crossbred cows kept at the Livestock Production Research Institute (LPRl), Bahadurnagar, District Okara and Qadirabad District Sahiwal ...
Manzoor Ahmad, J. H. J. van der Werf1 and Khalid laved2
doaj
The most threatened plants receive the least scientific attention
PLANTS, PEOPLE, PLANET, EarlyView.Plants sustain all life, providing the energetic and structural basis of ecosystems, but they face a growing risk of extinction. Reversing this decline requires an understanding of how scientific knowledge is distributed among species, and identification of the biases and gaps that hinder effective responses to the threats they face. However, we reveal
Renon S. Andrade +3 more
wiley +1 more source
Age, Calving Interval and Gestation Table [PDF]
, 2006 This document provides information useful for calculating a calf's age, a cow's calving interval, a cow's expected calving date and a cow's breeding ...
Clemson University. Cooperative Extension Service
core
Pest Management Science, EarlyView.The interaction between grass species and climatic season shapes the population dynamics of the cattle tick, Rhipicephalus microplus. This information highlights the potential of forage species to influence off‐host tick dynamics. Additionally, minimum temperature and minimum relative humidity were the most influential microclimatic predictors of ...
Valesca Henrique Lima +8 more
wiley +1 more source
Scientific Papers Animal Science and Biotechnologies, 2023 The aim this work was to evaluate relationships between traits of milk production and reproduction traits in breeding herds of Slovak spotted breed in the period 1992-2010 the results for 10 514 Slovak cows.
Jozef Bujko +4 more
doaj
Relationships Between Conformation and Calving Interval in Holstein Cows
Journal of Dairy Science, 1986 Type information collected by the Holstein Association of Canada from 1976 to 1983 was matched with calving interval records from the Record of Performance program of Agriculture Canada. Type traits considered were final class, major scorecard breakdown traits (general appearance, dairy character, capacity, rump, feet and legs, mammary system, fore ...
E, Dadati, B W, Kennedy, E B, Burnside
openaire +2 more sources
Portable Radar for Noncontact Heart Rate Monitoring and Estrus Detection in Dairy Cows
IEEJ Transactions on Electrical and Electronic Engineering, EarlyView.This study introduces a portable radar system for real‐time monitoring of respiratory and heart rates in dairy cows. It uses millimeter‐wave Frequency Modulated Continuous Wave (FMCW) radar to perform noncontact physiological sensing, reducing behavioral disturbance. The radar system's design prioritizes portability, cost‐effectiveness, and robustness,
Yingxiu Li +7 more
wiley +1 more source