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International Journal of Animal and Veterinary Advances
Archives Animal Breeding
Seasonal sensitivity of genotypes in the humid tropics and its application to chicken breeding2015 •
International Journal of Poultry …
Effects of genotype and housing system on the laying performance of chickens in different seasons in the semi-humid tropics2007 •
2016 •
Three-month old 60 pullets and 12 cockerels assigned to a 2X2X3 factorial arrangement as a completely randomized design with 4 treatments of 3 replicate for each treatment, distributed to 12 household farmers and maintained till 15-month age in Kedida Village-South Wollo zone, Ethiopia; in-order to study the effect of season (cold-CS, hot-HSe and main rainy seasons-MRS) and feeding regime (Supplemented-S and Non-supplemented-NS) on egg production performance of Bovans Brown (BB) and Koekoek (Kk) chicken breeds. The result revealed significantly (P<0.05) higher total collected eggs (TCE) in Kk and average egg weight (AEW) in BB breed. There were no significant differences in egg mass (EM) among all main and interaction effects. Though insignificant Kk chicken attained 6 days earlier in the age at onset of egg laying (AOEL) and significantly (P<0.05) earlier AOEL was recorded in the main effect supplemented and the interaction effects of BB breeds due to supplementation. In TCE-...
Asian Journal of Animal Sciences
Embryonic Development and Early Juvenile Growth of Nigerian Local Chickens in Crosses with Exotic Broiler Breeder under Humid Tropical ConditionsAn experiment was carried out to compare fertility, hatchability and egg quality traits of Nigerian locally adapted chickens in derived savanna environment of Nigeria. A total number of 1928 eggs consistof309eggs of naked neck, 635 eggs of frizzle feather, 590 eggs of Fulani ecotype and 394 eggs of normal feather eggs were used to study hatchability traits of the four genotypes. The results showed that fulani ecotypes had highest eggset (100%), fertile eggs (85.59%) and lowest infertile egg (14.41%) while highest and lowest hatchability and dead in shell was obtained for normal feather eggs of 86.67% and 13.33% respectivelythan other genotypes. Most of the parameters measured for correlation coefficient were positively significant for all the genotypes. Significant (P < 0.05) effect was observed among the egg traits measured and the genotypes. Naked neck eggs had highest egg weight (44.86g), egg length (7.03mm), shell weight (4.29mm), yolk weight (14.57mm) and yolk height (3.29mm) than its counterpart genotype eggs while normal feather eggs recorded highest egg breadth (5.34mm), albumen weight (22.68mm) and albumen height (4.58mm) over other genotype groups eggs.The presentresults indicated that fulani ecotype eggs performed better than other genotypes group used in this study in respect to hatchability traits and naked neck and normal feather eggs were better in egg quality traits than their counterpart genotype eggs. Introduction There has been rapid increase in the number of farmers keeping chicken parent and grandparent stock leading to increase in the population of meat type chicken in Nigeria (Kathleen 2002). Unfortunately, in Nigeria, poor fertility and hatchability rates among other factors constitute the major threat to performance of the industry (Adebambo 2005).The fertility and hatchability characteristics of egg type chickens in Nigeria are two main traits of assessing the potentials of hens (Allanah et al 2014). According to Peters et al (2008), the gene make-up of an individual chicken is fixed at fertilization and hence fertility and hatchability are generally considered as traits of two parents. Fertility is an important parameter in chicken and reflects the total actual reproductive capacity of females and males expressed by their ability when mated together to produce offspring. An egg is said to be infertile when it fails to show any evidence of developing embryo (Miazi et al 2012). Hatchability is a trait of economic importance in the chicken industry because it has a strong effect on chick output (Wolc et al 2010). It is influenced by a number of factors such as egg weight, turning of eggs, storage, humidity, shell strength, egg size and genetic factors within the chickens kept. The ability of the embryo to successfully escape from the shell is called hatchability (Tarek 1992). Good hatchability of eggs is to some extent heritable, but is determined by a complicated genetic constitution and the environment. Egg quality is important for consumer appeal, and the economic success of a producer depends on the total number of eggs sold. Egg quality comprises several aspects (Tumova et al 2007) related to egg weight, egg length, egg breath, shell weight, shell thickness and specific gravity (external quality) and to the albumen weight, haugh unit and yolk colour (internal quality). Egg quality has a genetic basis and the parameters of egg quality vary between strains of hens (Silverside et al 2006). However, the eggshell may be affected by interactions of age and breed (Campo et al 2007). The relationship between external traits, yolk and albumen had contributed to the egg weight increases with hen's age, reaching an apex by the end of laying cycle (Danilov 2000). Thus egg external qualities are one of the important phenotypic traits which influence egg quality and reproductive fitness of the chicken parent (Islam and Dulta 2010). It is real that beneficial egg quality traits are of immense importance to poultry breeding industries (Bain 2005). In addition, embryonic development of hen's egg is dependent on traits like egg weight, yolk and albumen weights, genetic line and age of hen (Onagbesan et al 2007). This study therefore, was designed to access the fertility and hatchability and egg quality characteristicsNigerian locally adapted chickens
Nigerian Journal of Geography and the Environment
Analysis of the influence of climatic factors on poultry production in Lagos, Nigeria2019 •
The study examined the effect of climatic factors on poultry production in Lagos State. In particular, the study compared the influence of climatic factors on poultry production in NIMET Oshodi farm and Tak farm Ojo in Lagos State, Nigeria. The study used only climatic variables collected from as the only factors that affect egg production while other variables were isolated. Also, egg production data from two poultries were collected to understand the trends and influence of climatic factors on their production. The study on trend analyses indicated an upward trend in rainfall amount, Tmax, relative humidity and bird mortality in Oshodi farm. In Tak farm, no trend was observed in rainfall and Tmax. Decreasing pattern was observed in relative humidity in Tak farm. The study also showed that climatic variables were not significantly related to culling in both farms. The result in Oshodi farm indicated that Tmax and rainfall had low, positive and insignificant associations with culling. In Tak farm, positive but insignificant associations were observed between Tmax, relative humidity, wind speed and culling. Pearson's correlation results showed that climatic factors correlated significantly with culling in the two locations. Relative humidity significantly correlated with mortality in Tak farm, while in Oshodi farm, none of the climatic factors showed positive associations with mortality. In Oshodi farm, Tmax and rainfall had positive significant relationship with egg weight, while in Tak farm, only rainfall positively correlated with egg weight. Result of the regression analysis showed that rainfall was the sole climatic variable that significantly influenced egg weight in Oshodi farm and it explained 91.2% of the variation in egg weight. In Tak farm, relative humidity and Tmax had significant influence on bird mortality and egg weight and the two explained 65.7% and 61.3% of the of the variation in bird mortality and egg weight respectively
Veterinary World
Effect of climatic variables on production and reproduction traits of colored broiler breeder poultryThis study was conducted to determine the laying performance and egg quality traits of Naked neck, Noiler, Frizzle feathered and Normal feathered chickens. Eighty birds were selected at random from 240 birds consisting of four Strains (20 Frizzle feathered, 20 Normal feathered, 20 Naked neck and 20 Noiler) of chickens used for this study. From point of lay to 40 weeks, eggs were collected from each strain to evaluate the external and internal egg quality parameters of the four stains of chickens. Data generated was subjected to one way analysis of variance (ANOVA) using the General Linear Model procedure (SAS, 2008). Result shows that the effect of strains on short term egg production characteristics of the four strains of chickens were significantly (p<0.05) different for all parameters. The effect of strains and weeks on short term external and internal egg quality traits was highly significant for all parameters studied. It also revealed that the Noiler strain had higher values for all the short-term egg production characteristics of the four Strains of Nigerian local and improved chickens which could also serve as baseline information for future improvement and selection.
Journal of World’s Poultry Research
Effects of Sex and Rearing Season on Body Weight Gain and Growth Curve Parameters of Local Chickens in Niger2023 •
Local chicken breeding is widespread in Niger, a country with harsh environmental conditions. This study aimed to investigate the effects of sex, temperature, and hygrometry variations on the body weight gain and growth curve of local Nigerien chickens. Two groups of local chickens were followed from hatching to 20 weeks of age. The first and second groups consisted of 96 and 124 chickens, respectively. Three seasons were identified based on continuously recording ambient temperature and humidity over a year. The dry and warm seasons (February, March, April, and May), the wet and warm seasons (June, July, August, and September), and the dry and cold seasons (October, November, December, and January). The average hatch weight was about 24 g, and monthly body weight gains ranged from 100 to 360 g. Asymptotic weights were 2214.02 ± 69.94 g and 1776.93 ± 63.57 g for roosters and 1380.25 ± 25.96 g and 1433.08 ± 71.24 g for hens. The sexual maturity rates indicate that hens are more precocious than roosters. Sex and season had significant impacts on the growth performance of the chickens. In conclusion, the results of the present study indicated that the optimal time to raise local chickens in rural Niger is from June to January, and males are better candidates for meat production.
Elementos de Direito Cooperativo 2a ed
Apresentação elementos de Dir Coop Renato Becho2019 •
The British journal of general practice : the journal of the Royal College of General Practitioners
A computer template to enhance patient-centredness in multimorbidity reviews: a qualitative evaluation in primary care2018 •
Green and Sustainable Chemistry
Photoelectrocatalytic Oxidation of Ethinylestradiol on a Ti/TiO<sub>2</sub> Electrode: Degradation Efficiency and Search for By-Products2014 •
2012 •
7th IFAC International Symposium on Advanced Control of Chemical Processes (2009)
Fault dection and variation source identification based on statistical multivariate analysis2009 •
2021 •
SAE Technical Paper Series
Coolant Seal Elastomer for Diesel Engine Head Gasket1993 •
Environmental Monitoring and Assessment
Adsorption-desorption and leaching potential of glyphosate and aminomethylphosphonic acid in acidic Malaysian soil amended with cow dung and rice husk ash2018 •
Revista de Administração
Networks in Argentine agriculture: a multiple-case study approach2013 •
European Journal of Organic Chemistry
Bisarylselanylbenzo-2,1,3-selenadiazoles: Synthesis, Photophysical, Electrochemical and Singlet-Oxygen-Generation Properties2018 •
Physics Letters B
Charged particle densities from Au+Au collisions at =130 GeV2001 •
2006 •
Cultivos tropicales
Influencia de los residuales liquidos de crudo y refino sobre la microflora del suelo1994 •
arXiv (Cornell University)
Developing a Vehicle Re-routing Algorithm using Connected Vehicle (CV) Technology2022 •
2020 •
Call Girls in Subhash Nagar
FULL ENJOY — 9953040155 Call Girls in Subhash Nagar | Delhi2025 •
Journal of Mammalogy
A NEW SUBSPECIES OF POCKET GOPHER (GENUSGEOMYS) FROM THE OZARK MOUNTAINS OF ARKANSAS WITH COMMENTS ON ITS HISTORICAL BIOGEOGRAPHY2000 •
XVII Congreso Argentino de Ciencias de la Computación
Validación de usabilidad de una plantilla para documentar casos de uso – estudio exploratorio2011 •
Clinical Pharmacology and Therapeutics
Xipamide disposition in liver cirrhosis1990 •
Islam and pluralism within the West
BOOK COVER: Islam and pluralism within the West2016 •