Results 1 to 10 of about 1,202 (145)

The use of computed tomography for in vivo estimation of reticulo-rumen and omasum contents in Alpine goats [PDF]

open access: yesJDS Communications
Precise in vivo measurement of reticulo-rumen content (volume and mass) is required for the study of digestive processes. Rumen-cannulated animals have been classically used for this purpose, and less invasive alternatives are currently investigated to ...
J.A.A. Pires   +5 more
doaj   +2 more sources

Exploring the reticulo-ruminal motility pattern in goats through medical barium meal imaging technology [PDF]

open access: yesFrontiers in Veterinary Science
The motility pattern of the reticulo-rumen is a key factor affecting feed intake, rumen digesta residence time, and rumen fermentation. However, it is difficult to study reticulo-ruminal motility using general methods owing to the complexity of the ...
Yang Song   +5 more
doaj   +2 more sources

Long-Term Recording of Reticulo-Rumen Myoelectrical Activity in Sheep by a Telemetry Method [PDF]

open access: yesAnimals, 2021
The reticulum and rumen are considered a single functional unit (the reticulo-rumen) with regards to myoelectrical and contractile activities. The specialized contractions of the reticulo-rumen provide constant mixing of partially digested material ...
Małgorzata Wierzbicka   +3 more
doaj   +2 more sources

Parturition and postpartum dietary change altered ruminal pH and the predicted functions of rumen bacterial communities but did not alter the bacterial composition in Holstein cows [PDF]

open access: yesFrontiers in Veterinary Science, 2022
We investigated the temporal dynamics of ruminal pH and the composition and predicted functions of the rumen bacterial community in Holstein cows during the periparturient period. Eight multiparous Holstein cows (body weight; 707.4 ± 29.9 kg, parity; 3.6
Yo-Han Kim   +4 more
doaj   +2 more sources

Ciliados nas cavidades do estômago de bovinos [PDF]

open access: yesArquivo Brasileiro de Medicina Veterinária e Zootecnia, 2001
O presente trabalho teve como objetivo identificar e quantificar os gêneros de ciliados do rúmen, retículo, omaso e abomaso de bovinos abatidos em matadouro municipal. Foram coletados 45ml de conteúdo de cada cavidade de 30 animais.
G.M.M. Salvio, M. D’Agosto
doaj   +5 more sources

Estrus Prediction Models for Dairy Gyr Heifers [PDF]

open access: yesAnimals, 2021
Technological devices are increasingly present in livestock activities, such as identifying the reproductive status of cows. For this, predictive models must be accurate and usable in the productive context. The aims of this study were to evaluate estrus-
Valesca Vilela Andrade   +7 more
doaj   +2 more sources

Oro-ruminal sampling device and technique for rapid collection of rumen content and improved recovery of solid fractions for microbiome analysis [PDF]

open access: yesJDS Communications
Rumen fistulation is a widely used procedure that allows for collection of ruminal contents. However, fistulation is an invasive and costly procedure that generally limits the number of animals that can be recruited for experiments, thus encouraging the ...
F.E. Miccoli   +8 more
doaj   +2 more sources

Phenotypic and genetic parameters of circadian rhythms from core body temperature profiles and their relationships with beef steers’ production efficiency profiles during successive winter feeding periods [PDF]

open access: yesFrontiers in Genetics, 2023
This 2-year study evaluated differences in circadian parameters obtained from measures of core body temperatures using telemetric reticulo-rumen and rectal devices during two winter feeding regimes in western Canada.
Obioha Durunna   +9 more
doaj   +2 more sources

Early rumen development in calves: Biological processes and nutritional strategies—A mini-review [PDF]

open access: yesJDS Communications
The transformation of the reticulo-rumen (hereafter rumen) from a monogastric state to a functional rumen during early calf development is driven by complex transcriptional reprogramming and changes in metabolic pathways.
M.H. Ghaffari, H.M. Hammon, C. Koch
doaj   +2 more sources

Órgãos vitais e trato gastrintestinal de vacas de descarte mestiças Charolês x Nelore abatidas com pesos distintos Vital organs and gastrointestinal tract of feedlot finished Charolais x Nellore culling crossbred cows slaughtered at different weights [PDF]

open access: yesRevista Brasileira de Zootecnia, 2007
Objetivou-se estudar o desenvolvimento dos órgãos vitais e do trato gastrintestinal de vacas de descarte mestiças provenientes da segunda (G2 - 3/4Charolês (C) 1/4Nelore (N) e 3/4NC) e terceira geração (G3 - 5/8CN e 5/8NC) do cruzamento rotativo Charolês
Fernando Kuss   +6 more
doaj   +2 more sources

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