Faecal near infrared spectroscopy to measure the diet selected and productivity of grazing ruminants
In ruminants near infrared spectroscopy of faeces (F.NIRS) can measure the concentrations of faecal constituents such as N and fibre. It can also directly estimate many diet attributes, including total N, fibre, digestibility and the major plant groups (e.g. monocots versus dicots, and some plant species). In some situations F.NIRS can be used to estimate voluntary intake and liveweight change, but it is difficult to encompass animal effects (e.g. lactation, maturity), pasture availability or mineral deficiencies. Application of F.NIRS, especially in conjunction with other measurements (e.g. metabolizable energy intake calculated from liveweight change, 13C/12C ratio in faeces, microbial protein synthesis and phosphorus concentrations in faeces) can provide valuable and reliable information about the nutritional status of grazing ruminants. Examples where F.NIRS has been used to measure the nutritional status of grazing cattle and sheep are described for extensive and intensive tropical production systems in northern Australia, the Caribbean, the Amazonian humid tropics, and for temperate pastures in Europe. F.NIRS can be applied to routinely and economically measure the nutrient intakes of grazing ruminants, and such information used to modify herd management.
Main Authors: | Dixon, R., Boval, Maryline, Blanfort, Vincent, Decruyenaere, V., Coates, David |
---|---|
Format: | conference_item biblioteca |
Language: | eng |
Published: |
CSIRO
|
Subjects: | L02 - Alimentation animale, L51 - Physiologie animale - Nutrition, U30 - Méthodes de recherche, |
Online Access: | http://agritrop.cirad.fr/573878/ http://agritrop.cirad.fr/573878/1/document_573878.pdf |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
NIRS as a Tool to Assess Digestibility of Feeds and Feedstuffs
by: Bastianelli, Denis -
Dégradabilité in situ de la matière sèche et des matières azotées de quelques fourrages ligneux: application des méthodes in sacco à l'étude de la digestion dans le rumen et dans les intestins
by: Touré Fall, S., et al. -
Mesures de la digestibilité des aliments en élevage de poulets de chair grâce au " proche infrarouge " : des premiers éléments de faisabilité
by: Bouvarel, Isabelle, et al. -
Use of near infrared spectroscopy for the prediction of nutrient digestibility in poultry
by: Bastianelli, Denis, et al. -
Application of Near Infrared Reflectance Spectroscopy (NIRS) to develop prediction models for feed intake of dairy cow based on animal factors and faecal spectra
by: Tran Hiep,, et al.