Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/14807
Title: A Potential Practical System to Estimate Pasture Intake of Individual Animals
Contributor(s): Cottle, David  (author)orcid 
Publication Date: 2013
Handle Link: https://hdl.handle.net/1959.11/14807
Abstract: Pasture feed intake of individual animals is very difficult to estimate. A practical measurement system would better enable the selection of livestock for pasture feed use efficiency and lower maintenance requirements, which are very important biological and economic traits. A prototype (Proway-CottleDove) feed bin system was trialed by comparing chaff intakes by cattle in a feedlot measured by a race fed autofeeder with intakes estimated by marker analysis of faecal and feed samples following the controlled daily consumption of wax labeled supplement. Intake of a native pasture was also estimated by use of the bin. Autofeeder-recorded daily chaff intakes were very variable and unreliable and so the accuracy of the bin system in estimating intake could not be determined. The repeatabilities of chaff intakes estimated from marker concentrations from sequential faecal samples were 0.2-0.3. Chaff intake predictions were in a feasible range, based on cattle liveweight. When the pasture grasses were combined in analyses, following a principal component analysis of markers, the diet composition, digestibility and daily intake of pasture plus supplement estimates, on average, were consistent with the prediction of intake from liveweight and liveweight gain. The average total intakes estimated from days 5, 7 and 10 faeces marker concentrations were 7.8kg, 6.9kg and 9.7kg/head respectively. The bin system used in this trial would estimate pasture intake at an approx. cost of $122/head. Multi-bin systems using Sapien Technology components and databases are being developed for further testing.
Publication Type: Conference Publication
Conference Name: 20th Conference of the Association for the Advancement of Animal Breeding and Genetics: Translating Science into Action, Napier, New Zealand, 20th - 23rd October, 2013
Conference Details: 20th Conference of the Association for the Advancement of Animal Breeding and Genetics: Translating Science into Action, Napier, New Zealand, 20th - 23rd October, 2013
Source of Publication: Proceedings of the Twentieth Conference of the Association for the Advancement of Animal Breeding and Genetics, p. 294-297
Publisher: AAABG: Association for the Advancement of Animal Breeding and Genetics
Place of Publication: Palmerston North, New Zealand
Field of Research (FOR): 070201 Animal Breeding
Socio-Economic Outcome Codes: 830301 Beef Cattle
830311 Sheep - Wool
830310 Sheep - Meat
Peer Reviewed: Yes
HERDC Category Description: E1 Refereed Scholarly Conference Publication
Other Links: http://www.aaabg.org/aaabghome/proceedings20.php
Series Name: Proceedings of the AAABG ... Conference
Series Number : 20
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Appears in Collections:Conference Publication
School of Environmental and Rural Science

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