Results 21 to 30 of about 101,713 (298)
Influence of Lactation Number, Year and Season of Calving on Milk Productivity of Cows
UKRAINIAN BLACK SEA REGION AGRARIAN SCIENCE, 2022 The main characteristics of the milk productivity of Holstein dairy cattle differ in different countries due to differences in terrain, management and breeding objectives. At the same time, the manifestation of non-genetic (that is, environmental) factors during milk production, as a rule, mask the real breeding value of animals.
O. Kramarenko, S. Kramarenko
openaire +2 more sources
A review of factors influencing litter size in Irish sows [PDF]
, 2007 peer-reviewedMany factors influence litter size. These include genetics, gilt management, lactation length, parity distribution, disease, stress and boar fertility. In the past 20 years, litter size in Irish sows has increased by only one pig. Born alive
Peadar G Lawlor +7 more
core +1 more source
Milk composition of Holstein cows: a retrospective study
Ciência Rural, 2018 : Worldwide, milk analysis is an satisfactory measurement of milk quality on dairy farms. Milk composition is the base for payment systems, so knowledge of its characteristics at different periods is essential for modern dairy producer.
Carlos Bondan +5 more
doaj +1 more source
Modeling daily energy balance of dairy cows in the first three lactations [PDF]
, 2005 Daily energy balance was calculated for 111 Holstein cows in their first 3 lactations, based on combinations of smoothed preadjusted phenotypic records for milk yield, feed intake, live weight, and body condition score.
Banos, G, Coffey, MP, Brotherstone, S
core +1 more source
Body Condition Score and Milk Production on Conception Rate of Cows under a Small-Scale Dairy System
Animals, 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
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2011 The aim of this study was to determine effect of lactation stage and number, current milk performance and ambient temperature on laterality of dairy cows laying behaviour (i.e. preference of either left or right body side).
Petra Zejdová +3 more
doaj +1 more source
Genetic Relationship of Body Energy and Blood Metabolites with Reproduction in Holstein Cows [PDF]
, 2008 Body condition score (BCS), energy content (EC), cumulative effective energy balance (CEEB), and blood serum concentrations of glucose, beta-hydroxybutyrate (BHBA), and nonesterified fatty acids ( NEFA) were measured throughout first lactation in 497 ...
Arsenos, G. +5 more
core +1 more source
Comparisons between C. pecorum positivity rates with breed, lactation status and lactation number.
, 2023 P-values for comparisons between C. pecorum positivity rates (animal prevalence) with breed, lactation status and lactation number at each sampling timepoint.
Hanna Marti (597504) +5 more
core +1 more source
Merging and characterising phenotypic data on conventional and rare traits from dairy cattle experimental resources in three countries [PDF]
, 2012 peer-reviewedThis study set out to demonstrate the feasibility of merging data from different experimental resource dairy populations for joint genetic analyses.
Coffey, M.P. +15 more
core +1 more source
Revista Brasileira de Parasitologia Veterinária, 2012 The aim of this study was to investigate whether season, lactation number, breed standard and milk production were risk factors relating to occurrences of gastrointestinal nematodes in dairy cows during the peripartum period.
Jenevaldo Barbosa da Silva +3 more
doaj +1 more source