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Abstract

Cattle pose estimation is a key step analyzing cattle behaviors and evaluating cattle health, hence, greatly significant for intelligent breeding of cattle. Computer vision based on cattle pose automatic estimation techniques were investigated in this paper and three deep cascaded convolutional...

Author(s)
Li XiangYuan; Cai Cheng; Zhang RuiFei; Ju Lie; He JinRong
Publisher
Elsevier, Amsterdam, Netherlands
Citation
Computers and Electronics in Agriculture, 2019, 164, pp 104885
Abstract

Bovine respiratory disease (BRD) remains the leading cause of morbidity and mortality in feedlot cattle. At feedlot arrival, classification of cattle groups into high- or low-risk based on their expected level of BRD is common, highly variable, and based on many subjective criteria. An accurate...

Author(s)
Amrine, D. E.; McLellan, J. G.; White, B. J.; Larson, R. L.; Renter, D. G.; Sanderson, M.
Publisher
Elsevier, Amsterdam, Netherlands
Citation
Computers and Electronics in Agriculture, 2019, 156, pp 439-446
AbstractFull Text

Estimation of animal weight is critical in cattle production to assist in herd management and to estimate the value chain prices of the animals. There is a lack of tools for small-scale farmers and stakeholders to readily estimate cattle weight in communal livestock farming systems in South Africa. ...

Author(s)
Conan, A.; Meyer, A.; Reininghaus, B.; Rooyen, J. van; Knobel, D. L.
Publisher
South African Society for Animal Science, Hatfield, South Africa
Citation
Applied Animal Husbandry & Rural Development, 2018, 11, 1, pp 46-52
Abstract

Genetic evaluation of female fertility in Danish, Finnish, and Swedish dairy cows was updated in 2015 to multiple-trait animal model evaluation, where heifer and cow fertility up to third parity are considered as separate traits. A model for conception rate was also developed, which required...

Author(s)
Muuttoranta, K.; Tyrisevä, A. M.; Mäntysaari, E. A.; Pösö, J.; Aamand, G. P.; Lidauer, M. H.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 9, pp 8184-8196
Abstract

Genotype by environment interaction (G × E) effects for lactating cows' fertility traits may differ with lactation number when accounting for herd production level. Our objective here was to investigate the genetic correlations among three fertility traits in cows and lactation persistency within...

Author(s)
Yamazaki, T.; Takeda, H.; Osawa, T.; Yamaguchi, S.; Hagiya, K.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Livestock Science, 2019, 219, pp 97-103
Abstract

We compared different Bayesian models to handle censored data for genetic parameters estimation of age at first calving (AFC) in Brazilian Brahman cattle. Data from females with AFC above 1825 days of age were assumed to have failed to calve and were considered as censored records. Data including...

Author(s)
Fernandes Lázaro, S.; Varona, L.; Fonseca e Silva, F.; Ventura, H. T.; Veroneze, R.; Brito, L. C.; Costa, E. V.; Sávio Lopes, P.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Livestock Science, 2019, 221, pp 177-180
Abstract

Background: Body weight (BW) at different ages are of increasing importance in dairy cattle breeding schemes, because of their strong correlation with energy efficiency traits, and their impact on cow health, longevity and farm economy. In total, 15,921 dairy cattle from 56 large-scale test-herds...

Author(s)
Yin Tong; König, S.
Publisher
BioMed Central Ltd, London, UK
Citation
Genetics, Selection, Evolution, 2019, 51, 4, pp (06 February 2019)
Abstract

High-producing dairy cows experience a state of negative energy balance in the periparturient period that is partially addressed by increasing the rate of fat and protein mobilization. Previous studies have focused on the rate of fat mobilization, and consequently the rate of protein mobilization...

Author(s)
Megahed, A. A.; Hiew, M. W. H.; Ragland, D.; Constable, P. D.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 6, pp 5550-5565
Abstract

The aim of this study was to estimate genetic parameters for environmental sensitivities in milk yield and composition of Iranian Holstein cows using the double hierarchical generalized linear model (DHGLM) method. Data set included test-day productive records of cows which were provided by the...

Author(s)
Ehsaninia, J.; Hossein-Zadeh, N. G.; Shadparvar, A. A.
Publisher
Cambridge University Press, Cambridge, UK
Citation
Journal of Dairy Research, 2019, 86, 2, pp 145-153
Abstract

A single-nucleotide polymorphisms-based genomic relationship matrix (GSNP) discriminate less identity by state from identity by descent (IBD) alleles compared with a multi-locus haplotype-based relationship matrix (GHAP), which can better capture IBD alleles and recent relationships. We aimed to...

Author(s)
Karimi, Z.; Sargolzaei, M.; Robinson, J. A. B.; Schenkel, F. S.
Publisher
NRC Research Press, Ottawa, Canada
Citation
Canadian Journal of Animal Science, 2018, 98, 4, pp 750-759

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