Studies on perinatal lamb mortality: with particular reference to immunological and nutritional factors
dc.contributor.author
Khalaf, Ahmad Mohammad
en
dc.date.accessioned
2018-05-14T10:13:48Z
dc.date.available
2018-05-14T10:13:48Z
dc.date.issued
1978
dc.description.abstract
en
dc.description.abstract
This study was concerned with perinatal lamb
mortality (PLM). Over a three year period, 263 ewes
and 576 lambs were studied. The work was divided into
three major sections.
en
dc.description.abstract
The first section was a preliminary study divided
into two parts. In the first part, basic data on PLM
were collected from a variety of sheep to ascertain
which aspects of the topic were worthy of further
investigation. In the second part, the effects of ewe
nutrition during the last eight weeks of pregnancy on
lamb performance were Investigated. Particular atten¬
tion was paid in both studies to mortality rates, causes
of death and birth weight and growth rate of lambs.
The effect of litter size and the passive immune status
of the lambs were also observed.
en
dc.description.abstract
The preliminary results lead on to the second major
section in which two topics were investigated. Firstly,
the effect on PLM, subsequent lamb performance and the
lamb's immunoglobulin status was Investigated when twin
lambs were deprived of colostrum. The deprivation
appeared to have no demonstrable detrimental effect.
Secondly, the effect of ewe nutrition during the last
eight weeks of pregnancy on PLM, the immune status of
lambs and the subsequent performance of both ewes and
lambs was studied. Nutritional levels affected both
ewe and lamb performance.
en
dc.description.abstract
In the last major part of the work the combined
effect of inadequate ewe nutrition during late pregnancy
and colostrum deprivation of twin lambs was studied.
A detrimental effect on lamb performance was observed
when the two factors were imposed together.
en
dc.description.abstract
Throughout the various stages of this work, blood
levels of 3-hydroxybutyrate, urea and albumin were used
to monitor the ewe's nutritional status. The major
laboratory investigations were concerned with levels of
immunoglobulins (IgG₁, IgG₂> IgM and IgA) in lamb's
serum and also in ewe's serum and colostrum.
en
dc.description.abstract
In addition, blood glucose, PCV and serum alkaline
phosphatase levels were measured in lambs. The value
of these parameters was assessed In relation to PLM.
en
dc.identifier.uri
http://hdl.handle.net/1842/29831
dc.publisher
The University of Edinburgh
en
dc.relation.ispartof
Annexe Thesis Digitisation Project 2018 Block 18
en
dc.relation.isreferencedby
Already catalogued
en
dc.title
Studies on perinatal lamb mortality: with particular reference to immunological and nutritional factors
en
dc.type
Thesis or Dissertation
en
dc.type.qualificationlevel
Doctoral
en
dc.type.qualificationname
PhD Doctor of Philosophy
en
Files
Original bundle
1 - 1 of 1
- Name:
- KhalafAM_1978redux.pdf
- Size:
- 55.66 MB
- Format:
- Adobe Portable Document Format
This item appears in the following Collection(s)