Browsing School of Agriculture and Food Security by Title
Now showing items 212-231 of 427
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Genetic diversity and population structure of Striga hermonthica populations from Kenya and Nigeria
(2017-10)Striga hermonthica is a parasitic weed that poses a serious threat to the production of economically important cereals in sub-Saharan Africa. The existence of genetic diversity within and between S. hermonthica populations ... -
Genetic diversity of symbiotic bacteria nodulating common bean (Phaseolus vulgaris) in western Kenya
(Public Library of Science, 2018-11-15)Biological nitrogen fixation (BNF) in legumes plays a critical role in improving soil fertility. Despite this vital role, there is limited information on the genetic diversity and BNF of bacteria nodulating common bean ... -
Genetic evaluation of growth of Dorper sheep in semi-arid Kenya using random regression models
(Elsevier, 2010-10-01)Data consisting of 8922 weight records from 2642 Dorper sheep from 20 to 380 days of age spanning 1981–1996 were used to model the growth trajectory using random regression (RR) and estimate genetic parameters. The independent ... -
Genetic evaluation of growth of Kenya Boran cattle using random regression models
(Springer Netherlands, 2007-10-01)Data consisting of 18 884 weight records collected from 1273 Boran cattle from birth to 24 months of age were used to estimate covariance functions and genetic parameters for growth of Boran cattle using random regression ... -
Genetic evaluation of milk yield of Bos taurus dairy breeds in Kenya
(2006-11-12)The objective of this study was to quantify the rate of genetic progress in 305-d milk yield (MY) in Bos taurus dairy cattle breeds. The Bos taurus breeds considered were Holstein Friesian (F), Ayrshire (A), Jersey (J) and ... -
The genetic map of finger millet, Eleusine coracana
(Springer-Verlag, 2007-01-01)Abstract Restriction fragment length polymorphism (RFLP), ampliWed fragment length polymorphism (AFLP), expressed-sequenced tag (EST), and simple sequence repeat (SSR) markers were used to generate a genetic map of the ... -
Genetic parameters for growth and reproductive traits in the Kenya Boran cattle.
(Instituto Prociência, 2006)see more details (WW), 12-month weight, 18-month weight and 24-month weight were 0.36, 0.40, 0.38, 0.21 and 0.17, respectively while estimates for age at first calving age at first calving Subject Category: Properties -
Genetic parameters for weaning weight of Kenyan Boran cattle accounting for direct-maternal genetic covariances
(South African Society for Animal Science, 2006)Genetic parameters were estimated for weaning weight (WW) in Kenya Boran cattle using animal models that assumed non-zero direct-maternal genetic covariance. In addition to the direct and maternal genetic effects, maternal ... -
Genetic Relationship between Lactation Curve Traits in Dairy Cattle
(2010)Dairy cattle selection strategy in Kenya prefers cows with good 305-day lactation milk yield (TMY) in previous parity. This has improved milk production although increased incidences of physiological disorders and ... -
Genetic relationship between lactation curve traits in the first three parities of dairy cattle
(2014-10-07)In Kenya, selection of dams for the national contract mating scheme is based on 305-day lactation milk yield (TMY) performance across parities. At farm level, only cows that had good TMY performance in previous parity are ... -
Genetic variability in registered Alpine dairy goat population in Kenya
(Ruforum, 2021)A total of 6893 individuals were used to evaluate the population structure and genetic variability of registered Alpine dairy goats in Kenya. Parameters estimated were pedigree completeness, maximum generations traced, ... -
Genome analyses reveal population structure and a purple stigma color gene candidate in finger millet
(Nature Publishing Group UK, 2023-06-21)Finger millet is a key food security crop widely grown in eastern Africa, India and Nepal. Long considered a ‘poor man’s crop’, finger millet has regained attention over the past decade for its climate resilience and the ... -
Genome-wide association analysis of residual feed intake and milk yield in dairy goats
(Oxford University Press, 2016-10-01)Interest in both dairy and meat goat production in the US has been increasing, and there is tremendous opportunity for genetic progress in traits that are easy to measure (eg, milk yield) and those that are more difficult ... -
Genotype environment interaction on sugar and biomass production in sweet sorghum (Sorghum bicolor (L). Moench) in western Kenya
(Academic Journals, 2016-02-29)Genotype x environment interaction was determined from field experiments conducted to evaluate sweet sorghum genotypes in Western Kenya during the 2011, 2012 and 2013 rainy season from April to July at Alupe, Kibos, Homa ... -
GOAT BREEDING IN LOW INPUT PRODUCTION SYSTEMS: INTERGRATING VALUES AND MODERN BREEDING TECHNOLOGIES FOR IMPROVING INSTRINSIC ROBUSTNESS
(2012-09)Low input production systems operate on long term values of supporting stable livestock production through efficient and sustainable combination of various production resources to achieve the desired production objectives. ... -
Growth and Nutrient Removal Efficiency of Sweet Wormwood (Artemisia annua) in a Recirculating Aquaculture System for Nile Tilapia (Oreochromis niloticus)
(Multidisciplinary Digital Publishing Institute, 2019-05)The maintenance of optimal water quality for fish production is one of the major challenges in aquaculture. Aquaponic systems can improve the quality of water for fish by removing the undesirable wastes and in turn produce ... -
Growth changes of seven Amaranthus (spp) during the vegetative and reproductive stages of development as influenced by variations in soil water deficit
(2015)Soil water deficit is a principal a biotic factor that limits plant growth and development in dry areas. Insufficient moisture contributes to soil water deficit and some negative effects on Amaranthus (spp) such as ... -
Growth Performance of African Catfish (Clarias Gariepinus) Fed on Diets Containing Black Soldier Fly (Hermetia Illucens) Larvae Under Aquaponic System
(AQUAST910, 2022)Cost of fish production can be reduced by replacement of high-priced fishmeal (FM) with insects sourced ingredients. Four months feed experiment was conducted at a fish farm in Baringo County, Kenya to investigate effects ... -
Growth response of rotifers on a bacterial-based diet made from fishwastes
(IOP Publishing, 2019-07)Fishwastes are potential low-cost diet sources for replacing microalgae, which is the popular diet for rotifers. Growth responses of rotifer were tested under different weights of the diet (i.e. 0.05, 0.1, 0.2 and 0.4 g/L), ... -
Growth Response, Survival and Profitability of Nile Tilapia (Oreochromis niloticus) Fed at Different Feeding Frequencies in Fertilized Earthen Ponds
(Kenya Marine and Fisheries Research Institute, National Aquaculture Research Development and Training Center,, 2014)Nile tilapia (Oreochromis niloticus) fingerlings were reared in earthen ponds at three different feeding frequencies; twice daily, twice after 1 day, and twice after 2 days for a period of 7 months. Three hundred and ...