Výsledky vyhledávání - "Rumination time"

Akademický článek

Genetic relationships between behavioral traits and feed efficiency traits in lactating Holstein cows

Autor: Bárbara M. Nascimento, Ligia Cavani, Malia J. Caputo, Mariana N. Marinho, Matthew R. Borchers, Richard L. Wallace, José E.P. Santos, Heather M. White, Francisco Peñagaricano, Kent A. Weigel

Publikováno v: Journal of Dairy Science, Vol 107, Iss 10, Pp 8141-8149 (2024)

ABSTRACT: The evaluation of dairy cow feed efficiency using residual feed intake accounts for known energy sinks. However, behavioral traits may also contribute to the variation in feed efficiency. Our objective was to estimate the heritability and r

Externí odkaz: https://doaj.org/article/388d5230a54d4c4ab54896f7ed752a54

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Akademický článek

Estimates of genetic parameters for rumination time, feed efficiency, and methane production traits in first-lactation Holstein cows

Autor: L.S.F. Lopes, F.S. Schenkel, K. Houlahan, C.M. Rochus, G.A. Oliveira, Jr., H.R. Oliveira, F. Miglior, L.M. Alcantara, D. Tulpan, C.F. Baes

Publikováno v: Journal of Dairy Science, Vol 107, Iss 7, Pp 4704-4713 (2024)

ABSTRACT: The large-scale recording of traits such as feed efficiency (FE) and methane emissions (ME) for use in genetic improvement programs is complex, costly, and time-consuming. Therefore, heritable traits that can be continuously recorded in dai

Externí odkaz: https://doaj.org/article/d2dd7c1222984afb875e4d471d15c829

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Akademický článek

Patterns of periparturient rumination and activity time in multiparous Holstein cows with and without dyscalcemia in early lactation

Autor: C.R. Seely, J.A.A. McArt

Publikováno v: Journal of Dairy Science, Vol 107, Iss 7, Pp 4871-4880 (2024)

ABSTRACT: Dyscalcemia, defined as reduced blood Ca at 4 DIM, is associated with reduced milk production and reproduction and an increased risk of negative health events. Cowside testing of blood Ca to diagnose dyscalcemia is difficult, and alternativ

Externí odkaz: https://doaj.org/article/c539316f14f3493a886a5990c3775ceb

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Akademický článek

Genetic analysis of rumination time based on an analysis of 77,697 Israeli dairy cows

Autor: Joel Ira Weller, Ephraim Ezra

Publikováno v: Journal of Dairy Science, Vol 107, Iss 7, Pp 4793-4803 (2024)

ABSTRACT: Reduction of methane emission may become necessary for sustainable milk production. Several studies indicate a relationship between rumination time and the level of methane emission. The objectives of the current study were to estimate envi

Externí odkaz: https://doaj.org/article/34e5e1ef2a744a4ebc69daa172093999

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Akademický článek

Estimation of genetic parameters and single-step genome-wide association studies for eating time and rumination time in Holstein dairy cows

Autor: Hadi Atashi, Pauline Lemal, Marie-Nguyet Tran, Nicolas Gengler

Publikováno v: Journal of Dairy Science, Vol 107, Iss 5, Pp 3006-3019 (2024)

ABSTRACT: The aims of this study were to estimate genetic parameters and to identify genomic regions associated with eating time (ET) and rumination time (RUT) in Holstein dairy cows. Genetic correlations among ET, RUT, and milk yield traits were als

Externí odkaz: https://doaj.org/article/e97f438d64dc4c40ad1f558936664d64

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Akademický článek

The repeatability and heritability of traits derived from accelerometer sensors associated with grazing and rumination time in an extensive sheep farming system

Autor: Fazel Almasi, Michael J. Stear, Majid Khansefid, Hien Nguyen, Aniruddha Desai, Jennie E. Pryce

Publikováno v: Frontiers in Animal Science, Vol 4 (2023)

IntroductionThe automated collection of phenotypic measurements in livestock is of interest to both researchers and farmers. Real-time, low-cost, and accurate phenotyping can enhance precision livestock management and could lead to the optimized util

Externí odkaz: https://doaj.org/article/9a5d78fd24c3416a87ec32af123b7163

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Akademický článek

Associations of Grazing and Rumination Behaviours with Performance Parameters in Spring-Calving Dairy Cows in a Pasture-Based Grazing System

Autor: Muhammad Wasim Iqbal, Ina Draganova, Patrick Charles Henry Morel, Stephen Todd Morris

Publikováno v: Animals, Vol 13, Iss 24, p 3831 (2023)

This study investigated the relationship of the length of time spent grazing and ruminating with the performance parameters of spring-calved grazing dairy cows (n = 162) over the lactation period for three lactation seasons (n = 54 per season). The c

Externí odkaz: https://doaj.org/article/4bc21aa5df664038b1f1b180bbe2dd4e

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The Effect of Feeding a Total Mixed Ration with an ad libitum or Restricted Pelleted Starter on Growth Performance, Rumination Behavior, Blood Metabolites, and Rumen Fermentation in Weaning Holstein Dairy Calves

Autor: Anna Antonella Spina, Vincenzo Lopreiato, Domenico Britti, Andrea Minuti, Erminio Trevisi, Bruno Tilocca, Alessia Perri, Valeria Maria Morittu

Publikováno v: Animals, Vol 14, Iss 1, p 81 (2023)

The aim of the current study was to evaluate the effect of the starter restriction and of the ad libitum TMR (total mixed ration) inclusion on intake, growth performance, rumination time (RT), and health condition of Holstein dairy calves during wean

Externí odkaz: https://doaj.org/article/220ca0b4f3e3463b8f8eb228fdbd951e

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