Fatty acid composition of extracted oils from 58 lines of cowpea (Vigna unguicuiata (L) Walp) was investigated by gas‐liquid chromatography (GLC). Considerable variability was observed in the fatty acid profile, though palmitic (16:0), linoleic (18:2) and linolenic (18:3) acids were the dominant ...
Scanty information on long-term soil organic carbon (SOC) dynamics hampers validation of SOC models in the tropics. We observed SOC content changes in a 16-year continuously cropped agroforestry experiment in Ibadan, south-western Nigeria. SOC levels declined in all treatments. The decline was mo...
Diels, J.
,
Vanlauwe, Bernard
,
Meersch, M.K. van der
,
Sanginga, N.
,
Merckx, R.
,
[Longterm soil organic carbon dynamics in a subhumid tropical climate: 13C data in mixed C3/C4 cropping and modeling with ROTHC]
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Longterm soil organic carbon dynamics in a subhumid tropical climate: 13C data in mixed C3/C4 cropping and modeling with ROTHC
This study was designed to evaluate the effects of some root - promoting substances on rooting andmini tuber formation using vine cuttings obtained from two genotypes (TDr 335 and TDr 93 - 49) of whiteyam (D. rotundata). The ashes were obtained from rice straw, bamboo, Gliricidia sepium, dry leav...
Agele, S.O.
,
Ayankanmi, T.G.
,
Kikuno, H.
,
[Effects of synthetic hormone substitutes and genotypes on rooting and mini tuber production of vines cuttings obtained from white yam (Dioscorea rotundata, Poir)]
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Effects of synthetic hormone substitutes and genotypes on rooting and mini tuber production of vines cuttings obtained from white yam (Dioscorea rotundata, Poir)
Biomass production and nutrient uptake of all components in planted Senna
spectabilis, Dactyladenia barteri and Flemingia macrophylla hedgerow fallow were
determined after three two-year fallow phases and compared to natural fallow. Total
above-ground biomass production after each of three fallow...
Hauser, S.
,
[Biomass production, nutrient uptake and partitioning in planted Senna spectabilis, Flemingia macrophylla and Dactyladenia barteria fallow systems over three fallow/cropping cycles on Ultisol]
,
Biomass production, nutrient uptake and partitioning in planted Senna spectabilis, Flemingia macrophylla and Dactyladenia barteria fallow systems over three fallow/cropping cycles on Ultisol
Cratylia argentea, a drought tolerant shrub, is known to produce significant amounts of fodder during the dry season but little is known of its nutritive value for feeding animals. Two studies of quality and intake of Cratylia argentea, as an arboreal protein supplement for crossbred dual purpose...
Ibrahim, M.
,
Franco, M.
,
Pezo, Danilo A.
,
Camero, A.
,
Araya, J.L.
,
[Promoting intake of Cratylia argentea as a dry season supplement for cattle grazing Hyparrhenia rufa in the subhumid tropics]
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Promoting intake of Cratylia argentea as a dry season supplement for cattle grazing Hyparrhenia rufa in the subhumid tropics
Crossbreeding parameters and variance components were estimated for lactation and reproductive traits of crosses between the Sahiwal, Brown Swiss and Ayrshire breeds in a dairy herd in sub-humid coastal Kenya. An individual animal model was fitted to the data with a fixed effect for 20 distinct b...
Mackinnon, M.J.
,
Thorpe, W.R.
,
Baker, R.L.
,
[Sources of genetic variation for milk production in a crossbred herd in the tropics]
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Sources of genetic variation for milk production in a crossbred herd in the tropics
Binswanger, Hans P.
,
McIntire, John M.
,
[Behavioral and material determinants of production relations in land abundant tropical agriculture]
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Behavioral and material determinants of production relations in land abundant tropical agriculture
Resistance to nematode parasites can be improved by selection, but efforts to include appropriate traits in commercial livestock breeding programs are only a recent development. Procedures for including resistance in breeding programs are similar to those involving other traits. The steps are des...
Woolaston, R.R.
,
Baker, R.L.
,
[Prospects of breeding small ruminants for resistance to internal parasites]
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Prospects of breeding small ruminants for resistance to internal parasites
Records from 1577 cows borm from 1973 to 1983 on a ranch in lowland Kenya were analyzed for age at first calving, lactation length, lactational milk yield, calving interval, annual milk yield, and, for cows born from 1973 to 1979, number of calvings, productive lifetime in the herd, and lifetime ...
Thorpe, W.R.
,
Morris, C.A.
,
Kang'ethe, P.
,
[Crossbreeding of Ayrshire, Brown Swiss, and Sahiwal cattle for annual and lifetime milk yield in the lowland tropics of Kenya]
,
Crossbreeding of Ayrshire, Brown Swiss, and Sahiwal cattle for annual and lifetime milk yield in the lowland tropics of Kenya
Cattle, sheep, goats, buffalo and other ruminant animals in developing countries feed mainly on poor-quality plant material, on natural rangelands or pastures as well as on bushes, trees and crop residues. The efficient utilization of such materials depends upon symbiotic micro-organisms in one o...