Research Papers/Topics in Animal Breeding And Genetics

Genetic Diversity Of Aphid Species Attacking Amaranth And Nightshades In Different Agro-Ecological Zones Of Kenya And Tanzania

ABSTRACTAphids are the major pests of vegetables leading to a significant yield loss in African indigenous vegetables including amaranth and nightshades. Information on the types of aphids that infest these vegetables and their genetic diversity in Kenya and Tanzania is scanty. This is an important diagnostic component in developing management strategies such as integrated pest management and early detection and control of invasive species. This study used a fragment of the mitochondrial cyto...

Spatial Distribution And Assessment Of Genetic Diversity Of The Kenyan Mount Ain Bongo (Tragelaphus Eurycerus Isaaciy Using Dna Based Molecular Markers

ABSTRACTThe Kenyan mountaiu bongo (Fr(/ge/fI/J/lII,\' curycerus is(1f1ci) is an endangeredTragclnphinc antelope sub-species endemic to Mt. Kenya- Aberdare ecosystems.This antelope has currently been reduced to pockets of small populations in forestpatches (mainly in the Aberdares) exacerbated primarily by habitat fragmentationdue to anthropogenic and disease factors. The conservation and survival of thesespecies needs vital cmpiricul datil 011 critical luctors such as genetic processes thatmi...

Phenotypic Characterization of Local Chickens (Gallus Gallus Domesticus) In Bekwarra Cross River State, Nigeria

This study was conducted in Bekwarra Local Government Area of Cross River State, Nigeria, to identify and determine some characteristics of local chickens. A total of 530 adult chickens of both sexes and 111 fresh eggs were carefully examined at seven administrative council wards of the local government. About 43.00% of the birds observed were male while 57.00% were females. Statistical Package for Social Sciences (SPSS) was employed to carry out descriptive statistics on qualitative an...

GROWTH PATTERN, REPRODUCTIVE PERFORMANCE AND SEASONAL SENSITIVITY OF BOVAN NERA AND ISA BROWN PARENT-STOCK CHICKENS IN IBADAN NIGERIA

ABSTRACTParent stocks (PS) of exotic hybrids have contributed immensely to commercial poultry production in Nigeria. Their continued optimal utilization depends on their performance test. Information on performance indices of PS layer breeds in South-West Nigeria is however limited. The growth, reproductive performance and seasonal sensitivity of Bovan Nera (BN) and Isa Brown (IB) hybrids were evaluated.Secondary data on 24 batches of PS of each of BN and IB kept over a period of 10 years (19...

Comparison of conventional and automated freezing methods on PB2 rooster semen cryopreserved with glycerol and dimethylsulfoxide tris coconut-water extender

Background: Poultry semen cryopreservation remains an easy and promising way of preserving and transferring poultry germplasm. Standardizing and optimizing freezing procedure with natural extender may be a reliable step towards achieving better post-thawed sperm quality. This study was conducted to investigate the effects of four different freezing protocols (FP) on frozen rooster semen extended with tris coconut water extender (TCWE). A total of 20 roosters were used and trained for semen co...

SEX IDENTIFICATION OF NIGERIAN INDIGENOUS FRIZZLE FEATHERED AND NAKED NECK CHICKS USING VENT SEXING AND MOLECULAR TECHNIQUE

ABSTRACTSex  determination of  Nigerian indigenous  frizzle  feathered and naked neck chicks  has  been a difficult  task especially  due  to the  monomorphism  and high variation in  the  feather  colour  of  this indigenous  chickens  using  the  feather  sexing method. Thus, the  vent  sexing method is  cheap  and easy  to  carry  out  depending&n...

Assessment of Funaab Alpha Broiler Chicken of Genetic Gain For Breast Girth

                                      ABSTRACT This experiment was conducted to estimate and study the genetic gain (ΔG) of FUNAAB Alpha broiler chicken that was selected mainly for breast girth at week 0 to week 10, to provide support for genetic improvement. A total of 200 FUNAAB Alpha broiler chicken were sourced for and fed ad libitum. Data were collected at the end of 2nd, 4th, 6th, 8th and 10th week; birds/strain was selected from both strains. The initial breast gir...

Variation of meat-type chickens in relation to genotypes and age of slaughter on carcass indices.

The experiment was conducted to compare the various carcass characteristics between two broiler strains. A total bird of 150 day-old chick of two commercial broiler strains (Marshall and Cobb, 75 each) were raised and at the end of 4, 6 and 8 weeks, 20 birds/strain; 40 birds/week, making a total of 120 birds were randomly selected from both strains for carcass analysis. The birds were starved of feed overnight and individually weighed to obtain starved live body weight. Th...

Variants mining of Kappa casein K-CN and Prolactin PRL genes among four indigenous cattle breeds in Nigeria

The study determined the allele and genotype frequencies of genetic variants in two genes associated with milk production traits in four indigenous cattle breeds (N’dama, White Fulani, Muturu and Keteku) in Nigeria. Polymerase chain reaction restriction fragment length polymorphism (PCR-RFLP) technique was used to detect genetic polymorphisms in two milk genes (kappa casein (K-CN) and Prolactin (PRL)). Three genetic variants (AA, AB and BB) of K-CN gene were detected in White Fulani and Mut...

ASSOCIATON OF KAPPA-CASEIN GENOTYPE AND THE LINEAR PARAMETER IN TWO INDIGENIOUS BOS INDICUS AND BOS TAURUS CATTLE IN NIGERIA

Kappa-casein as a mammalian milk protein is involved in a several important physiological processes and it’s about 80% of the total protein in cow milk. This study aimed at genotyping bovine Kappa casein(CSN3) in two indigenous Nigerian cattle populations and to determine the frequency distribution of Kappa casein variants as detected across the animals examined and their association with the body measurement. DNA was extracted from 100 blood samples of 50 White Fulani and 50...

Effects of Age and Management System on Egg Quality Traits of Fulani Ecotype Hens

The study was carried out to determine the effect of age and management system on egg quality traits of Fulani ecotype hens. Egg quality traits were measured at 20, 22 and 24 weeks of age from 45 Fulani ecotype hens reared in the cage and deep litter system of management. However, 50 to 70 eggs were utilized at different ages. Data were collected on Egg weight (EW), Egg length (EL), Egg width (EWD), Shell weight (SW), Shell thickness (ST), Yolk weight (YW), Yolk width (YWD), Yo...

Transcriptome profiling of four candidate milk genes in milk and tissue samples of temperate and tropical cattle

The expression of four genes involved in milk regulation and production in bovine milk and tissue samples profiled using quantitative PCR to identify differential gene expression. Our goal focussed on the differential mRNA expression of milk genes (K-CN, PRL, BLG and PIT-1) in milk samples and different tissues from four different breeds of ecologically adapted and geographically separated cattle species. The mRNA expression identified the four milk genes understudied most upregulat...

Genotype and sex effects on the performance characteristics of pigs

Data from fifty-four pigs: twenty-five Duroc, twenty-one Large White and eight crosses of Duroc and Large White (Hybrid) were used to quantify and mathematically describe the performance traits of pigs. The aim of this study was to investigate the effects of genotype, sex and their interaction on the performance characteristics of three pig genotypes. The pigs were 30 kg of body weight and 70 days of age at the beginning of the study. Records for body weight (BW), body len...

PHILOSOPHY AND OTHER BURNING ISSUES for publicationUPDATED

Philosophy and other burning issues is a comprehensive philosophy text book that introduces philosophy to a non starter in philosophy and with it in depth study of other burning issues in philosophy.

DETECTION OF QUANTITATIVE TRAIT LOCI: CHICKEN EGG AND REPRODUCTIVE TRAITS

This book provides research findings of the study conducted with the aim of revealing genetic loci influencing egg production traits in crosses between the chicken inbred lines New Hampshire and White Leghorn which were kept at the animal experimental station of Humboldt Universität zu Berlin, Germany. Besides providing the quantitative trait loci (QTL) information, the performance of the parental lines for various production and reproductive traits were well described. The book is...


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