Results 111 to 120 of about 46,786 (294)
Genetic parameters of age at first calving, weight gain, and visual scores in Nelore heifers
, 2017 This study aimed at estimating the heritability of age at first calving and of performance traits included in the selection index and the genetic correlations between age at first calving and these performance traits. Data were extracted from the Conexao
Luís Afonso Marques Claus +5 more
semanticscholar +1 more source
Veterinary Record, EarlyView.Abstract Background Updated targets for measuring transfer of passive immunity (TPI) at the herd level have been suggested, but the current performance of dairy herds in Great Britain is unknown. Methods A cross‐sectional study was performed. Serum total protein (STP) data collected between October 2022 and October 2023 by 21 veterinary practices were ...
George Lindley +3 more
wiley +1 more source
Housing, management and health in Swedish dairy calves [PDF]
, 2004 This thesis discusses the results of an observational study conducted in dairy herds in the south-western Sweden and a questionnaire survey of dairy herds done throughout Sweden.
Lundborg, Karin
core
Veterinary Record, EarlyView.Abstract Background Changing legislation regarding antimicrobial consumption (AMC) forces Flemish bovine veterinary practitioners (BVP) to rethink their business models and shift their on‐farm practices from curative to preventive. However, little is known about their current practices and opinions regarding antibiotic stewardship, mastitis treatment ...
Lien Creytens +2 more
wiley +1 more source
, 2017 Age at first calving (AFC) and accumulated 305 d milk yield (MY) data from first-lactation daughters of imported Holstein (IH) and Thai Holstein (TH; purebred and crossbred Holstein-Other Breeds) sires were used to estimate genetic parameters and to ...
Tawirat Konkruea +3 more
semanticscholar +1 more source
Genetic aspects of calving, growth, and carcass traits in beef cattle [PDF]
, 2003 The aim of this thesis was to learn more about the genetic background of calving, growth and carcass traits of beef cattle breeds in Sweden, and to assess the possibility of including calving traits and commercial carcass traits in the genetic evaluation.
Eriksson, Susanne
core
Veterinary Record, EarlyView.Abstract Background During lambing, 10% iodine is often used to protect neonatal navel and ear tag sites. The evidence for its effectiveness is sparse. Recently, a specific navel barrier solution (NBS) was developed. Here, an in vivo field trial compared the two treatments. Methods Ten farms reported data from 6840 lambs. The navel and ear tag sites of
Fiona M. Lovatt +3 more
wiley +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
Genetic improvement of cattle through field progeny testing programme: An evaluation of achievement
Indian Journal of Animal Sciences, 2018 Evaluation of bulls through progeny testing and their extensive use has been a major source of genetic improvement in dairy animals. Adequate numbers of progeny tested bulls are not available in India and whatever small numbers of bulls are progeny ...
A K DAS +11 more
doaj +1 more source
Gain in Dairy Economy hangs around Age at First Calving (AFC) and Calving Interval (CI)
, 2023 Dairy farming which is practiced in India from time immemorial plays a significant part in Indian rural economy. The input of dairy farming is revolving around the economic traits of cattle and buffalo, which majorly includes age at first calving and calving interval. Due to negative correlation between milk yield and fertility, selection for high milk
openaire +1 more source