Browsing by Author "Abdulrazak, S. A."

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Effect of Intercropping Herbaceous Legumes with Napier Grass on Dry Matter Yield and Nutritive Value of the Feedstuffs in Semi-arid Region of Eastern Kenya
(2006) Njoka-Njiru, E. N.; Njarui, M. G.; Abdulrazak, S. A.; Mureithi, J. G.
Semi-arid region of Kenya is faced with inadequate quantity and low quality of livestock feeds. Research was conducted in the semi-arid region of eastern Kenya to investigate the contribution of two legumes, Seca (Stylosanthes scabra cv. Seca) and Siratro (Macroptilium atropurpureum cv. Siratro) to seasonal total fodder productivity and nutritive value when intercropped with Napier grass (Pennisetum purpureum cv. Bana). The treatments consisted of Napier grass planted as pure stand and intercropped with legumes. During the production phase, the grass and legumes were harvested for dry matter yield after every 8 weeks for a period of four wet seasons and two dry seasons between April 2002 and September 2004. Overall total herbage yield of the mixtures was higher than those of sole fodder grass with the grass constituting the major component of the yield. Seca was more productive and had a relatively stable yield than Siratro. It accounted for higher proportion of total DM yield of 15 - 34%. in Napier compared to Siratro which had less than 5% except in the drier season when yield failed. Total DM yield was highest during the short rains of year 2002 and declined thereafter in subsequent seasons and was lowest during the dry seasons. It was observed that crude protein of Napier grass was significantly ( P< 0.05) enhanced by inclusion of the legume in the intercrop (CP 9.64 - 9.96% of DM) compared to sole Napier grass (CP 8.14% of DM). Napier grass intercropped with Seca was more degradable than sole Napier grass. It can be concluded that Seca formed a better association with fodder grass than Siratro and is recommended for intercropping in the semi-arid region of eastern Kenya.
Nutritive value and Palatability rating of fifteen Selected Indigenous Kenyan Browse Species fed to Small East African Goats.
(Livestock Research for Rural Development 29 (6) 2017, 2017-06) Ondiek, J. O.; Abdulrazak, S. A.; Njoka, E. N.
A palatability study was conducted using fifteen indigenous multipurpose tree leaf forages offered to twenty intact male Small East African Goats, 7 to 8 months and 18kg ± 2.1kg. The CP (gkg-1DM) of the best five species were: M. angolensis (321), A. senegal, (249),Z. mucronata, (200), G. bicolor, (196) and A. brevispica, (187). The NDF and ADF contents ranged from 218-601 for A. hockii and A. amara, and 160-462 for A. hockii and A. abyssinica, respectively. The palatability ranking of the forages was in the order: A. tortilis> M. angolensis> B. aegyptiaca> Z. mucronata> A. coriaria> A. Senegal> A. abyssinica> A. mellifera> A. brevispica> A. elatior> A. amara> G. bicolor> A. nilotica> B. micrantha> A. hockii. M. angolensis and Z. mucronata had OMD of 68.0 and 73.8%, respectively. M. angolensis, Z. mucronata ranked highly on the parameters studied. It is concluded that Maerua angolensis and Zizyphus mucronata being high in nutritive value and palatability, are potential protein supplements to low quality basal diets.
Supplementing Rhodes grass Chloris gayana hay with Maerua angolensis improves weight gain of growing small East African goats
(2018) Ondiek, J. O.; Abdulrazak, S. A.; Njoka, E. N.
To study the performance of Small East African goats fed Rhodes grass(Chloris gayana) hay supplemented with 5 levels of Maerua angolensis (0, 15, 20, 25, 30g DM W0.75) 20 goats were divided into five groups and randomly assigned five treatments in a randomized complete block design based on initial body weight (10.3±1.3kg). The treatment diets were offered twice daily at 08.00 and 14.00 hours with C. gayana and clean water were available ad libitum. Feed intake increased with increasing level ofM. angolensis, whereas, average daily gain, digestibility of DM, CP, NDF and rumen NH3N were the highest on 20g supplementation level. It is concluded that M. angolensis is a potential protein source and can be supplemented at 124 gd-1 (or 20% of metabolic weight, i.e. 20gDM/kgW0.75) for growing Small East African goats.