2026-09-26T13:57:50Zhttps://mro.massey.ac.nz/server/oai/requestoai:mro.massey.ac.nz:10179/148342025-11-11T14:20:19Zcom_10179_294col_10179_296
DSpace at Massey University
author
Stewart, John Alexander
2019-07-30T21:53:40Z
2019-07-30T21:53:40Z
1962
http://hdl.handle.net/10179/14834
Q112836528
https://www.wikidata.org/wiki/Q112836528
Economy in feeding the ruminant is based on taking full advantage of rumen function. At birth however the rumen is not functional
and the very young animal is dependent on a diet which it can digest without aid from microbial fermentation The need for a readily assimilated diet is normally fulfilled by the mothers milk. In the case of naturally reared animals this milk may continue to provide
a significant proportion of the nutrients in the diet of the young animal even when rumen function has been established and it is capable of obtaining its nutrient requirements from grazing alone.
Recognition of the fact that milk is an ideal food for young animals is reflected in the extended periods of milk feeding which in the past have been characteristic of the rations fed to artificially reared dairy stock. However there may be several disadvantages in such a practice, not the least of which being the amounts of milk and labour involved.
In the search for more economical methods of calf rearing, the possibility of weaning at an earlier age has been investigated. Calves have been weaned as early as 3 weeks of age (Preston 1960), and it is known that calves which are provided with high quality pasture may be weaned at about 8 weeks of age without ill effect. [From Introduction]
en
The Author
Rumen
Rumination
Physiology
Dairy cattle
Some aspects of the development of rumen function in dairy calves reared on pasture : a thesis presented at Massey College in partial fulfilment of the requirements for the degree of Master of Agricultural Science in the Victoria University of Wellington
Thesis
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
URL
https://mro.massey.ac.nz/bitstreams/0ee27e57-6cfe-4ad3-8931-d2cf30109f42/download
File
MD5
9cf6dc677b86bdca64e1674dd08f1efc
1707546
application/pdf
01_front.pdf
URL
https://mro.massey.ac.nz/bitstreams/59278c9f-0d29-47ad-8501-c934113f5bb8/download
File
MD5
fc364665a856be0cb5893bdfd38b8b52
15535062
application/pdf
02_whole.pdf
URL
https://mro.massey.ac.nz/bitstreams/ee9a1c29-9c07-4318-bf10-c65f806c1b68/download
File
MD5
c2923467a204bd0c2669576035920827
35034
text/plain
01_front.pdf.txt
URL
https://mro.massey.ac.nz/bitstreams/7e692504-afe2-493b-b0b1-baff7fe89019/download
File
MD5
cdad796870f032107e6197463fcad2b2
99289
text/plain
02_whole.pdf.txt