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Olafadehan OA Olafadehan OO Obun CO Yusuf AM Adewumi MK Omotugba SK Daniel NE 《Tropical animal health and production》2012,44(2):285-291
Forty-eight rabbits used to investigate the response of growing rabbits to diets containing differently processed cassava
peel meals were divided into four groups balanced for sex and weight. These groups were then assigned at random to the experimental
treatments. Four diets were formulated such that the diets contained 200 g/kg of the experimental feedstuffs, sun-dried cassava
peel meal (S), ensiled cassava peel meal (E) and retted cassava peel meal (R), and the control did not contain any cassava
peels. Hydrogen cyanide (HCN) concentration in the processed cassava peel meal was lower relative to the unprocessed meal.
It was, however, lowest in R and highest in E. With the exception of S, fibre fractions were lower in the processed meal compared
to the unprocessed meal. The E depressed (p < 0.05) feed and digestible nutrient intakes, weight gain, nutrient digestibility, digestible protein (DP), digestible energy
(DE) and DP/DE ratio but increased protein intake to gain and feed to gain ratios compared to other diets. Intake of HCN decreased
(p < 0.05) successively in this order: R, S and E. The results indicate that retting and sun-drying are more effective in cassava
peel detoxification than ensiling, and dietary HCN concentration and intake of 56 and 4 mg/kg BW, respectively, were not toxic
under the conditions of the experiment. 相似文献
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Idris I. Adejumobi Paterne A. Agre Adewumi S. Adeyinka Inacio M. Cipriano Joseph G. Adheka Didy O. Onautshu 《Plant Breeding》2023,142(5):563-572
Yam is an important tuber crop with enormous potential to enhance rural sustenance and livelihood in DRC. However, studies to enhance its genetic improvement are very far from sufficient with only a handful of information available on the crop. Yam has been treated as an orphan crop compared to contemporary crops such as cassava and sweet potato which have adapted to different cropping systems and become widespread in production. The lack of research attention to address the major production challenges has further decreased the value and potential of the crop compared to its contemporaries. These production constraints include lack of adequate quality planting materials, low yield potential, poor resistance/tolerance to yam mosaic and anthracnose diseases and ultimately poor tuber quality attributes focusing on tuber taste, flesh oxidation and dry matter contents of the majority of the farmers preferred varieties. In this review, we evaluated the status of yam in DRC and presented the needful activities to be incorporated for its improvement. Diversity has however been maintained mainly through ennoblement efforts in house gardens and small farmlands using traditional farming methods. Studies from other nations where yam has been successful with prominence in characterization and genetic improvement brought to light the need for DRC to consider yam as a staple carbohydrate food source, even to the extent of modifications in food public policy. Reversal of the yam's current stigma is a challenge to the scientific community and the population in general. 相似文献
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Four hundred and eighty matured yearlings of Clarias gariepinus (Burchell) (female=182±10 g; males=208±5 g) distributed into groups of 30 specimens (sex ratio 1:1) were fed differently heated soybean‐based diets. Seven approximately iso‐nitrogenous (31% crude protein) and iso‐caloric (13.97 kJ g?1) diets were prepared from either raw soybean (SAMSOY 2, TGX 636–02D) or soybean seeds autoclaved for 5, 10, 15, 20, 25 and 30 min. The untreated and the variously heat‐treated soybean meals were mixed with other ingredients to prepare diets designated as DSoy0, DSoy5, DSoy10, DSoy15, and DSoy20, DSoy25 and DSoy30 according to the treatment time of the soybean portion of the diets, and were fed to the fish broodstocks for 84 days. The fishmeal‐based diet (DFM) served as the reference diet. The duration of heating soybean component of the experimental diet significantly (P<0.05) affected the growth performance and the number of eggs produced by the broodstocks, the percentage number of eggs fertilized and hatched as well as the survival of the progenies. The progenies of the brood fish fed diets DFM and DSoy25 with a yolk sac size of 2.78±0.6 and 2.42±0.5 mm, respectively, had significantly (P<0.05) larger yolk sacs, which were also absorbed at a significantly faster rate of 0.61±0.02 and 0.51±0.03 mm day?1, respectively, than progenies of broodstocks fed other experimental diets. Swim‐up fry survival rates were also better in hatchlings from broodstocks fed DFM (89.5%), DSoy25 (83.8%) and Dsoy 20 (80.5%) diets than progenies from other experimental diets. This study showed that soybean meal portion processed at 116°C and 1.2 kg cm?2 pressure for 25 min in the diet, which ensures normal reproductive function and production of healthy progenies in C. gariepinus, could serve as a substitute for fishmeal in the broodstock diets. 相似文献
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Phosphorus is crucial to crop growth and yield because of its multiple effects on plant nutrition.Most tropical soils have low plant available phosphorus and there is the need for external input of P to achieve optimum yield.The response of soybean to different sources and levels of phosphorus fertilization were therefore investigated between August,2013 and January,2014.The treatments consisted of four fertilizer sources[Sokoto Rock Phosphate(SRP),single super phosphate,Di-Ammonium Phosphate(DAP)and control]and fi ve levels of fertilizers(0,15,30,60 and 75 kg P·hm~(-2))fi tted into Randomized Complete Block Design(RCBD)with three replications.Soil samples were collected,processed and analyzed before planting and after harvest.Data on growth(plants height,numbers of leaves,numbers of branches and numbers of flowers)and yield(pod and grain weights)were analyzed using ANOVA and significant means were separated using LSD at 5%probability level.Application of DAP at15 kg P·hm~(-2) and 30 kg P·hm~(-2) produced the highest grain yield and showed signifi cant differences in plant height,numbers of leaves and numbers of branches.SRP should not be recommended for the study area,because there was no signifi cant difference across all the parameters and it was characterized with low grain yield,due to its level of acidity and the mildly acidic nature of the soil. 相似文献
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The effects of prepartum supplementary feeding on the productive and reproductive performance were investigated using grazing
gestating Bunaji cows with an average initial body weight of 294.50 ± 3.75 kg. Twenty cows were allocated to a completely
randomized design, with five animals per treatment. The treatments were: A, range grazing (RG); B, RG + 100% corn bran (CB);
C, RG + 60% CB + 40% palm kernel cake (PKC), and D, RG + 60% CB + 40% dried brewer’s grains (DBG). The average daily gains
(ADG) and body condition scores (BCS) of supplemented cows were significantly better than the non-supplemented cows. Postpartum
weight loss was markedly reduced in supplemented cows compared to their non-supplemented counterparts. Mean milk offtake and
mean milk yield per lactation were significantly lower in non-supplemented cows than the supplemented ones. Among the supplemented
cows, ADG, BCS, mean milk offtake and milk yield per lactation were significantly better for cows on treatments C and D than
those on treatment B. Though insignificant, longest lactation length (LL) and shortest calving interval were obtained for
supplemented cows. Calf’s birth weight was similar among the treatments. Milk yield was significantly influenced (R2 = 0.8601) by cow’s weight, BCS and LL. 相似文献
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M. A. Bamikole A. O. Akinsoyinu I. Ezenwa† O. J. Babayemi J. Akinlade‡ M. K. Adewumi 《Grass and Forage Science》2004,59(4):357-363
The dry matter (DM) yield and degradability of 6‐week‐old harvests of tropical forages were measured over a season. The forages were nitrogen‐fertilized Guinea grass (Panicum maximum, NFG), unfertilized Guinea grass (UFG), Verano stylo (Stylosanthes hamata,VS), a Guinea grass–Verano stylo mixture (GSM) and Guinea grass in the grass–Verano stylo mixture (GGSM). Six‐week‐old forages were made possible through a cutting regime, which produced four harvests in the growing season. The DM yields of the forages differed significantly (P < 0·001) and showed a significant reduction (P < 0·01) across the season. Crude protein and neutral‐detergent fibre concentrations were significantly (P < 0·01) different between the forages but there was no difference between harvests. The DM degradability of the forages at all harvests were significantly (P < 0·001) different with differences in the soluble fraction (a), degradable fraction (b), potential degradability (PD) and effective degradability (ED), but rate of degradability (c) did not show any significant difference between the forages. Significant (P < 0·01) differences were found between harvests for b and PD, and for the interaction between forage and harvest for b, PD and ED but were not found for the a and c fractions. Both the PD and ED values of all the forages fell with advancing harvests. Although the 6‐week‐old harvests of forage were found not to influence the characteristic reduction in yield of tropical grasses over time, it is concluded that such a management system could be used to obtain forage of relatively high nutritive value during the growing season. 相似文献
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