Results 71 to 80 of about 11,071 (289)

Impact of nonadditive genetic effects in the estimation of breeding values for fertility and correlated traits

open access: yes, 2005
The effects of inbreeding, heterosis, recombination loss, and percentage Holstein on the estimation of predicted transmitting abilities for fertility traits (calving interval, number of days from calving to first insemination, nonreturn rate, number of ...
Coffey, M.P.   +9 more
core  

Micro‐habitat selection by boreal woodland caribou improves access to food

open access: yesWildlife Biology, EarlyView.
Bio‐logging sensors attached to radiotelemetry receivers have great potential to transform our understanding of the ecological, physiological, and energetic constraints that shape patterns of wildlife movement under field conditions. We used video camera collars to assess microhabitat selectivity by woodland caribou Rangifer tarandus in boreal forests ...
Ian D. Thompson   +8 more
wiley   +1 more source

Estimation of the breeding value and ranking of Holstein-Friesian bulls on fertility properties [PDF]

open access: yesSelekcija i Semenarstvo, 2018
The analysis included 433 daughters of 10 bulls, calving for the first time in the period from 2007 to 2014, on 6 dairy farms of the Agricultural Corporation Belgrade AD.
Mićić Nenad   +6 more
doaj  

Genetic relationships between calving interval and body condition score conditional on milk yield

open access: yes, 2002
Body condition score (BCS) is a useful tool in assessing the energy status of dairy cattle. Previous research has shown that it is heritable and genetically correlated to reproductive performance.
Coffey, M.P.   +3 more
core  

Effects of various uterine treatments on calving-to-conception interval

open access: yes, 1973
Cows were given intrauterine infusions of enzymes, antibacterials, bacteria, or a combination of enzymes and antibacterials after calving to study basic changes in the post-partum uterus and effect on rebreeding.
Schalles, R.R.   +5 more
core   +1 more source

DNA metabarcoding reveals wolf dietary patterns in the northern Alps and Jura Mountains

open access: yesWildlife Biology, EarlyView.
Understanding predator–prey interactions is crucial for wildlife management and human–wildlife coexistence, particularly in multi‐use landscapes such as western Europe. As wolves Canis lupus recolonize their former habitats, knowledge of their diet is essential for conservation, management and public acceptance.
Florin Kunz   +6 more
wiley   +1 more source

Estimating red deer Cervus elaphus population density using drones in a steep and rugged terrain

open access: yesWildlife Biology, EarlyView.
Precise and accurate information about population density, crucial for wildlife management, is difficult to obtain for elusive species living in dense forests or steep and inaccessible terrain. Using unmanned aerial vehicles (UAVs), we developed a method for obtaining absolute population estimates of ungulates living in steep, rugged, and partly ...
Julie Bommerlund   +3 more
wiley   +1 more source

Insight into the reproductive performance of Murrah buffaloes based on RNA sequencing analysis

open access: yesFrontiers in Animal Science
Late sexual maturity and prolonged postpartum ovarian acyclicity are responsible for longer non-productive periods, thereby compromising the economic viability of buffalo farming.
Poonam Sikka   +5 more
doaj   +1 more source

Environmental Factors Affecting Performance Traits of Sahiwal Cattle in Pakistan [PDF]

open access: yesPakistan Veterinary Journal, 2012
Data on 23925 lactations of 5897 Sahiwal cows in five Government herds of Punjab (Pakistan) viz. Livestock Experiment Station (LES) Allahdad, LES Bahadurnagar, LES Fazalpur, LES Jahangirabad and LES Khizerabad (1964-2004) were collected to document the ...
Z. Rehman*§ and M. S. Khan
doaj  

Parturition timing and the pre‐ and post‐partum behaviour of female moose assessed using animal‐borne video and movement‐based approaches

open access: yesWildlife Biology, EarlyView.
Limited information on moose calving behaviour, including parturition timing, cow‐calf interactions, and pre‐ and post‐partum movement patterns hinder our ability to define calving phenology and habitat use. GPS‐collars were deployed on 89 female moose over five years, including eight collars equipped with animal‐borne video and environmental data ...
Mikaela Borgeaud LeBlanc   +3 more
wiley   +1 more source

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