INFLUENCE OF TIME OF SOWING ON THE CHEMICAL COMPOSITION OF FOUR COTTONSEED VARIETIES
INFLUENCE OF TIME OF SOWING ON THE CHEMICAL COMPOSITION OF FOUR COTTONSEED VARIETIES
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Date
1995-05
Authors
ANIGO, KOLA MATTHEW
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Abstract
Four cottonseed varieties (TAMCOT-CABCS, TAMCOT-CAMD-E,
TX-CDP.37-H-H-I-83 and SAMCOT-6) sown in May, June and July,
1991 were analysed to investigate the influence of time of
sowing and variety on some chemical parameters.
Data obtained showed significant variation in some of
these parameters due to time of sowing and variety. Time of
sowing significantly increased (P < 0.05) gossypol and ester
value of TAMCOT-CABCS, but decreases its crude fat and
manganese contents. Iron and copper contents of TAMCOT-CAMD-E
were increased but had its crude fat, magnesium and phosphorus
contents decreased. There were decreases in free cyanide,
sodium and manganese contents of TX-CDP, while for SAMCOT-6
there was an increase in total carbohydrate but decreased
crude fat, ester and saponification values, manganese and free
cyanide contents.
These cottonseed varieties sown in May showed significant
effect (P< 0.05) of variety on the ester value, saponification
value, calcium, sodium, phosphorus, manganese, iron and copper
while those sown in June, varietal differences were reflected
in their iron content. Those sown in July showed varietal
effect on phytic acid, magnesium and manganese content.
Based on the findings of this study, these cottonseed
varieties are good sources of oil, protein and roughage, and
may be distributed for sowing ending of May to obtain higher
cotton fibre and oil yields. Appreciable protein quantity
\/ i i
could be obtained from the cottonseed meal after the
extraction of the oil which can be used as feed supplement to
animals.
Description
A THESIS SUBMITTED TO THE POSTGRADUATE SCHOOL
AHMADU BELLO UNIVERSITY, ZARIA.
IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE AWARD OF
THE DEGREE OF MASTER OF SCIENCE (M.Sc.) IN BIOCHEMISTRY.
DEPARTMENT OF BIOCHEMISTRY
FACULTY OF SCIENCE
AHMADU BELLO UNIVERSITY
ZARIA, NIGERIA.
MAY, 1995
Keywords
INFLUENCE,, SOWING,, CHEMICAL,, COMPOSITION,, COTTONSEED,, VARIETIES.