Results 51 to 60 of about 6,238 (254)
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
Evaluation of Adaptive, Productive and Reproductive Performance of Boran Dairy Breed in the Lowland Agro-Ecology of Kaffa Zone, South-Western Ethiopia. [PDF]
Vet Med SciBoran dairy cattle demonstrated acceptable productive, reproductive and adaptive performance under lowland conditions of south‐western Ethiopia. Significant effects of parity and lactation stage were observed on milk yield and blood parameters, while physiological values remained within normal ranges, confirming good adaptation and potential for ...
Nigatu EW.
europepmc +2 more sources
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
Fecundity of the Lagune Cow in Benin. Age at first calving and Calving Intervals
Revue d’Elevage et de Médecine Vétérinaire des Pays Tropicaux, 2005 Data collected from 1987 to 2003 at the Samiondji farm in Benin were used to study the age at first calving (n = 200) and calving intervals (n = 805) in the Lagune cow.
T.I. Alkoiret, A.B. Gbangboche
doaj +1 more source
EFFECT OF CALVING SEASON, PARITY AND AGE AT FIRST CALVING ON PERFORMANCE TRAITS AND PHENOTYPIC CORRELATIONS BETWEEN THESE TRAITS IN HOLSTEIN FRIESIAN COWS [PDF]
Journal of Animal and Poultry Production, 2007 The effects of calving season , parity and age at first calving on performance traits and phenotypic correlations between these traits were studied in.
S. Abbas,
doaj +1 more source
Improving Beef Cattle Profitability by Changing Calving Season Length
Journal of Applied Farm Economics, 2020 We determined the impacts of calving season length on net returns and variability in net returns for spring-and fall-calving herds in Tennessee. Weaning weight as a function of calving date was estimated using a 19-year data set and simulation models generated distributions of net returns for 45-, 60-, and 90-day calving periods with and without using ...
Boyer, Christopher N +2 more
openaire +3 more sources
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
Monitoring GPS‐collared moose by ground versus drone approaches: efficiency and disturbance effects
Wildlife Biology, EarlyView.Efficient wildlife management requires precise monitoring methods, for example to estimate population density, reproductive success, and survival. Here, we compared the efficiency of drone (equipped with a RGB camera) and ground approaches to detect and observe GPS‐collared female moose Alces alces and their calves. We also quantified how drone (n = 42)
Martin Mayer +8 more
wiley +1 more source
Genetic analysis of first dry period and lifetime performance in Hariana cattle
Indian Journal of Animal Sciences, 2022 The present study was aimed to study lifetime milk production of Hariana cattle in organized farms. The nongenetic factors such as period of calving/birth, season of calving/birth, AFC age group and farms on these traits were studied by least-squares ...
MAHANTESH SHETKAR +5 more
doaj +1 more source
Wildlife Biology, EarlyView.Resource managers require accurate estimates of large herbivore abundance and demography to maintain ecological integrity. Common methods to count these species, including observations from low altitude helicopter flights, may conflict with other protected area management objectives and struggle to produce precise estimates for more cryptic species. To
Hanem G. Abouelezz, N. Thompson Hobbs
wiley +1 more source