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Effectiveness of precision feeding in reducing N excretion in dairy cattle
(Elsevier, 2023-07-01)
Two periods enrolling 56 (milk yield 36.2 ± 7.91 kg/d) and 58 (milk yield 32.4 ± 4.99 kg/d) grouped-fed dairy cows were performed to evaluate nutrient adjustment and N emissions of a precision feeding ...
Effect of particle size of a mash concentrate on behavior, digestibility, and macroscopic and microscopic integrity of the digestive tract in Holstein bulls fed intensively
(Oxford University Press, 2018-11-01)
Twenty-four individually housed Holstein bulls (456 ± 6.9 kg of body weight and 292 ± 1.4 d of age) were enrolled in a complete randomized experiment involving four dietary treatments to evaluate the ...
Whole rumen metagenome sequencing allows classifying and predicting feed efficiency and intake levels in cattle
(Nature Research, 2019-01-09)
The current research was carried out to determine the associations between the rumen microbiota and traits related with feed efficiency in a Holstein cattle population (n = 30) using whole metagenome ...
Using compositional mixed-effects models to evaluate responses to amino acid supplementation in milk replacers for calves
(Elsevier, 2021-04-15)
The consequences of supplementing Lys, Met, and Thr in milk replacers (MR) for calves have been widely studied, but scarce information exists about potential roles of other AA (whether essential or not). ...
Trans-Generational Effect of Maternal Lactation during Pregnancy: A Holstein Cow Model
(Public Library of Science, 2012-12-20)
Epigenetic regulation in mammals begins in the first stages of embryogenesis. This prenatal programming determines, in
part, phenotype expression in adult life. Some species, particularly dairy cattle, ...
Feeding pasteurized waste milk to preweaned dairy calves changes fecal and upper respiratory tract microbiota
(Frontiers Media, 2019-06-06)
In the present study bacterial communities from both, the gastrointestinal and respiratory tract of pre-weaned dairy calves fed two different milk-feeding programs were characterized using 16S rRNA gene ...
A Meta-analysis Describing the Effects of the Essential oils Blend Agolin Ruminant on Performance, Rumen Fermentation and Methane Emissions in Dairy Cows
(MDPI, 2020-04-03)
There is an increasing pressure to identify feed additives which increase productivity or decrease methane emissions. This paper aims to elucidate the effects of supplementing a specific essential oils ...
Consequences of supplying methyl donors during pregnancy on the methylome of the offspring from lactating and non-lactating dairy cattle
(Public Library of Science, 2017-12-11)
The aim of this study was to evaluate the potential effects of methyl donor supplementation of pregnant animals in the presence or absence of a concomitant lactation on the methylome of the offspring. ...
Past, present, and future of epigenetics applied to livestock breeding
(Frontiers Media, 2015-09-28)
This article reviews the concept of Lamarckian inheritance and the use of the term epigenetics in the field of animal genetics. Epigenetics was first coined by Conrad Hal Waddington (1905–1975), who ...
Effects of particle size and moisture levels in mixed rations on the feeding behavior of dairy heifers
(Elsevier, 2014-06-11)
Two experiments on replacement heifers (175 ± 12 days of age) assessed the effects of forage particle length and moisture on feeding behavior. Both experiments used a replicated 3 × 3 Latin square design, ...