Results 11 to 20 of about 311,425 (281)

Prospects of modernization of cattle breeding processes [PDF]

open access: yesBIO Web of Conferences, 2023
The development of livestock in industrialized nations has shown that when breeding activity is well-organized, it is feasible to enhance breeds and quickly boost output.
Dosmukhamedova Mukhayo   +1 more
doaj   +1 more source

Seasonality in resumption of ovarian activity and reproductive performance of postpartum Holstein cows

open access: yesThe Journal of Reproduction and Development, 2022
It has been suggested that domestication has turned cattle from seasonal breeders to annual breeders. This study examined the seasonal differences in early postpartum ovulation and subsequent reproductive performance in 542 Holstein cows. Cows displaying
Minoru SAKAGUCHI   +2 more
doaj   +1 more source

Integrated Small RNA Sequencing, Transcriptome and GWAS Data Reveal microRNA Regulation in Response to Milk Protein Traits in Chinese Holstein Cattle

open access: yesFrontiers in Genetics, 2021
Milk protein is one of the most important economic traits in the dairy industry. Yet, the regulatory network of miRNAs for the synthesis of milk protein in mammary is poorly understood.
Wentao Cai   +6 more
doaj   +1 more source

Features of conformation type of black-andwhite cows of different origin estimated by linear classification method [PDF]

open access: yesТехнологія виробництва і переробки продуктів тваринництва, 2022
The research was carried out in the aspect of studying features of conformation type cows of Ukrainian Black-and-White dairy and Holstein breeds estimated by linear classification method.
Khmelnychyi L., Karpenko B.
doaj   +1 more source

Body Condition Score and Milk Production on Conception Rate of Cows under a Small-Scale Dairy System

open access: yesAnimals, 2019
Management and production characteristics impact conception rate to first service (CR1S) in small-scale dairy farms, but the impact of body condition score (BCS) and milk production levels on cows’ fertility is unknown.
Luis Javier Montiel-Olguín   +6 more
doaj   +1 more source

Effect of leptin gene polymorphism on the breeding value of milk production traits in Iranian Holstein

open access: yesAnimal, 2008
New molecular techniques focused on genome analysis, open new possibilities for more accurate evaluation of economiclly important traits in farm animals.
M. Sadeghi   +3 more
doaj   +1 more source

Carcass characteristics of cattle differing in Jersey proportion [PDF]

open access: yes, 2018
peer-reviewedComparison of alternative dairy (cross-)breeding programs requires full appraisals of all revenues and costs, including beef merit. Few studies exist on carcass characteristics of crossbred dairy progeny originating from dairy herds as well ...
Berry, Donagh   +4 more
core   +1 more source

Bio-economical model application in cattle breeding

open access: yesActa Agriculturae Slovenica, 2005
Dairy production systems are complex and cannot be described by a single profit function. In a bio-economical model, relevant biological and economical aspects of the production system are described as a system of equations.
Elli PÄRNA   +3 more
doaj   +1 more source

Nucleon Polarizabilities [PDF]

open access: yes, 2000
The subject of nucleon polarizabilities in real, virtual, and doubly virtual Compton scattering is discussed with respect to what is known and how such quantities can be extracted from data.Comment: 13 page Latex file; Talk given at Chiral Dynamics 2000 ...
Holstein, Barry R.
core   +3 more sources

Neutrinos and the Standard Model [PDF]

open access: yes, 2000
Since their "discovery" by Pauli in 1930, neutrinos have plaed a key part in confirmation of the structure of the standard model of strong and electroweak interactions.
Holstein, Barry R.
core   +3 more sources

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