dc.contributor.author | Wanyoike, M M | |
dc.date.accessioned | 2013-05-28T09:19:31Z | |
dc.date.available | 2013-05-28T09:19:31Z | |
dc.date.issued | 1979-09 | |
dc.identifier.citation | Doctor of Philosophy in Animal Production, Univesity of Nairobi,1978 | en |
dc.identifier.uri | http://erepository.uonbi.ac.ke:8080/xmlui/handle/123456789/26512 | |
dc.description | PhD Thesis | en |
dc.description.abstract | The effects of a feed additive (Monensin sodium) on intake
and feed efficiency. the factors affecting the accuracy of using
Cr 0 as an external indicator for digestibility and intake studies
ana ihe physiological aspects of compensatory growth were reviewed.
In experimental work conducted by the author, Monensin was
fed as a component of a cereal-based concentrate diet to ~rowing and
finishing cattle under indoor fedding ··and grazing· con~itions
'in1.977 and "197a. Monensin fed to cattle on the normal winter rations
depressed silage intake during the store period in 1977 and improved
LWG during the 1977 finishing period and the 1978 store period. Feed
efficiency was improved in all cases. The reaeone for the different
modes of action ~1Cre investigate,d. When Mone'nsin was offered •. dth
concentrates on good pasture in 1977 it had no effect on either
intake or UIG nor did concentrate supplementation improve feed intake
or LWG. In the 1978 storo per'Lod two levels of feeding each with
Monensin at two levels were compared. The effect of Monensin at the
two levels of feeding was not significantly different.
In 1978, the effects of the preceding winter level of feeding
on the intake and !MG at pasture was studied. Intake and LWG of the
cattle that had been subjected to a restricted growth rate of
O.5kg/day were higher on pasture than of controls Which had grown at
a rate of 1.08kg/day. The reasons for this were examined.
Several detaileel studies of techniques were made. Two methods
of estimating faecal output, total collection or by using an external
marker (c-201) were compared. The Cr20'3gave better estimates • In
the 1978 gra~ing period, two faecal sam~ling techniques, field or
grab sampling were compared with the grab samples taken at three
different sampling time schedules. The error associated with the
Cr20 concentration of the field samples was less than with grab
sampfes but the correlation between the Cr20J concentration of field
and grab samples was highly significant.
In the 1978 finishing period, the effect of time of access to
feed on intake vas studied. Increasing the time of access to grass
silage from 5 to 24hr. significantly increased total feod intake. | en |
dc.language.iso | en | en |
dc.subject | Beef production | en |
dc.subject | Feed Intake | en |
dc.subject | Feed additive | en |
dc.title | Beef production: studies on feed intake and on the use of a feed additive | en |
dc.type | Thesis | en |
local.publisher | College of Agriculture and Veterinary Sciences, University of Nairobi | en |