Sources of variation in corn silage and total mixed rations of commercial dairy farms
Information on sources of variation in feed and diet characteristics is needed to develop appropriate strategies to reduce uncertainty and to separate true variation from that associated with measurements. The objectives were to determine sources of variation in DM content and particle size distribu...
Guardado en:
| Otros Autores: | , , , , |
|---|---|
| Formato: | Artículo |
| Lenguaje: | Inglés |
| Materias: | |
| Acceso en línea: | http://ri.agro.uba.ar/files/intranet/articulo/2018turiello.pdf LINK AL EDITOR |
| Aporte de: | Registro referencial: Solicitar el recurso aquí |
| LEADER | 03087nab a22003617a 4500 | ||
|---|---|---|---|
| 001 | 20190425160631.0 | ||
| 003 | AR-BaUFA | ||
| 005 | 20200612180111.0 | ||
| 008 | 190425t2018 ne d||||o|||| 00| 0 eng d | ||
| 999 | |c 46276 |d 46276 | ||
| 999 | |d 46276 | ||
| 999 | |d 46276 | ||
| 999 | |d 46276 | ||
| 022 | |a 1080-7446 | ||
| 024 | |a 10.15232/pas.2017-01704 | ||
| 040 | |a AR-BaUFA | ||
| 245 | 1 | |a Sources of variation in corn silage and total mixed rations of commercial dairy farms | |
| 520 | |a Information on sources of variation in feed and diet characteristics is needed to develop appropriate strategies to reduce uncertainty and to separate true variation from that associated with measurements. The objectives were to determine sources of variation in DM content and particle size distribution in corn silage (CS) and TMR. Ten dairy farms in Argentina were visited on 3 consecutive days, samples of CS and TMR were taken, and an audit of feed management was conducted. Corn silage and TMR were sampled in duplicate each day. Variance components were calculated with the Mixed Linear Models of InfoStat for CS and Generalized Linear Mixed Models for TMR. For CS, the model included the effects of farm and day within farm, and for TMR, the model included farm, pen within farm, day within pen, and feed bunk site within pen. Residual effects accounted for sampling and analytical variation. Farm was the greatest source of variation for DM and particle size distribution of CS and TMR, explaining 40 to 92 per cent of total variation. For CS, day within farm variation was greater compared with residual variation in DM (7 and 0.6 per cent, respectively), meaning real changes occurred from one day to the other. For TMR, daily variation in DM content was high and possibly associated with feed management errors. For particle size distribution in TMR, sampling and assaying variation was greater than feed bunk site variation, indicating increased replication and averaging is needed to increase precision. | ||
| 653 | |a VARIATION | ||
| 653 | |a DRY MATTER | ||
| 653 | |a PARTICLE SIZE DISTRIBUTION | ||
| 653 | |a TOTAL MIXED RATION | ||
| 700 | 1 | |a Turiello, Paula |u Universidad Nacional de Río Cuarto. Departamento de Producción AnimaL. Río Cuarto 5800, Argentina. |9 68537 | |
| 700 | 1 | |a Larriestra, Alejandro |u Universidad Nacional de Río Cuarto. Departamento de Patología Animal. Río Cuarto, Argentina. |9 68538 | |
| 700 | 1 | |9 10622 |a Bargo, Fernando |u Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina. | |
| 700 | 1 | |a Relling, Alejandro E. |u The Ohio State University. Department of Animal Sciences. Ohio, US. |9 47400 | |
| 700 | 1 | |a Weiss, William |u The Ohio State University. Department of Animal Sciences. Ohio, US. |9 68539 | |
| 773 | |g vol.34, no.2 (2018), p.148-155, tbls. |t The Professional Animal Scientist | ||
| 856 | |f 2018turiello |i en Reservorio |q application/pdf |u http://ri.agro.uba.ar/files/intranet/articulo/2018turiello.pdf |x ARTI201904 | ||
| 856 | |u https://www.elsevier.com |z LINK AL EDITOR | ||
| 942 | |c ARTICULO | ||
| 942 | |c ENLINEA | ||
| 976 | |a AAG | ||