Search

Your search keyword '"Ferris, C.P."' showing total 79 results
Start Over Author "Ferris, C.P." Language english
79 results on '"Ferris, C.P."'

3. Prediction of key milk biomarkers in dairy cows through milk mid-infrared spectra and international collaborations

Author

Grelet, C., Larsen, T., Crowe, M.A., Wathes, D.C., Ferris, C.P., Ingvartsen, K.L., Marchitelli, C., Becker, F., Vanlierde, A., Leblois, J., Schuler, U., Auer, F.J., Köck, A., Dale, L., Sölkner, J., Christophe, O., Hummel, J., Mensching, A., Fernández Pierna, J.A., Soyeurt, H., Calmels, M., Reding, R., Gelé, M., Chen, Y., Gengler, N., and Dehareng, F.

Published
2024
Full Text
View/download PDF

29. Impact of slurry application method on phosphorus loss in runoff from grassland soils during periods of high soil moisture content

Author

McConnell D.A., Doody D.G., Elliott C.T., Matthews D.I., and Ferris C.P.

Subjects
phosphorus runoff, slurry, splash-plate, trailing-shoe, Agriculture (General), S1-972, Nutrition. Foods and food supply, TX341-641
Abstract

Previous studies have reported that the trailing shoe application technique reduces phosphorus (P) in the runoff postslurry application when compared to the traditional splash-plate application technique. However, the effectiveness of the trailing-shoe technique as a means of reducing P losses has not been evaluated when slurry is applied during periods of high soil moisture levels and lower herbage covers. To address this issue, three treatments were examined in a 3 × 4 factorial design split-plot experiment, with treatments comprising three slurry treatments: control (no slurry), splashplate and trailing-shoe, and four slurry application dates: 7 December, 18 January, 1 March and 10 April. Dairy cow slurry was applied at a rate of 20 m3/ha, while simulated runoff was generated 2, 9 and 16 days later and analysed for a range of P fractions. Dissolved reactive P concentrations in runoff at day two was 41% lower when slurry was applied using the trailing-shoe technique, compared to the splash-plate technique (P < 0.05). In addition, P concentrations in runoff were higher (P < 0.05) from slurry applied in December and March compared to slurry applied in January or April, coinciding with periods of higher soil moisture contents. While the latter highlights that ‘calendar’-based non-spreading periods might not always achieve the desired consequences, the study demonstrated that further field-scale investigations into the trailing shoe as a mitigation measure to reduced P loss from agricultural soils is warranted.

Published
2016
Full Text
View/download PDF

50. A comparison of the feeding and grazing behaviour of primiparous Holstein-Friesian and Jersey × Holstein-Friesian dairy cows

Author

Vance, E.R., Ferris, C.P., Elliott, C., and Kilpatrick, D.J.

Subjects
Grazing behaviour, Food intake, Feeding behaviour, food and beverages, Crossbreeding
Abstract

Peer-reviewed article Food intake and feeding behaviour of Holstein-Friesian (HF) and Jersey × Holstein- Friesian (J × HF) dairy cows (14 primiparous cows of each genotype) were measured during a 54-day confinement period [cows offered a complete diet comprising conserved forage and concentrates; 66:34 dry matter (DM) basis], while herbage intakes and grazing behaviour were measured on three occasions during a 96-day grazing period. Throughout the experiment HF cows had a higher milk yield than J × HF cows (P < 0.05), while fat + protein yield was unaffected by genotype. During the confinement period HF cows had a higher food intake than the J × HF cows (P < 0.01), although DM intake/kg metabolic live weight (live weight0.75) was unaffected by genotype. With the exception of the number of ruminating bouts/day (P < 0.05), and idling time/day (P < 0.05), both of which were highest with the J × HF cows, genotype had no significant effect on any of the feeding behaviours examined during the confinement period. Herbage intake did not differ between genotypes during the grazing period, although when expressed on a kg live weight0.75 basis, intakes were highest with the J × HF cows (P < 0.05). While the smaller J × HF cows had fewer grazing bouts per day (P < 0.01), the mean duration of each grazing bout was longer (P < 0.001), resulting in a longer total grazing time (P < 0.05) and a greater number of grazing bites each day (P < 0.01). The smaller crossbred cows had to ‘work harder’ during the grazing period to achieve the same intakes as the larger HF cows. Department of Agriculture and Rural Development for Northern Ireland (DARD); Agri-Search

Published
2012

Catalog

Books, media, physical & digital resources
See catalog results