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Conference Paper 1992

Autor: Inyangala, B.A.O. Rege, J.E.O. Itulya, S.

Presents results of a study undertaken at Magogo, Kenya, to analyse genetic and phenotypic correlations between adjacent weights, between weights and rates of growth, and among growth rates themselves, hence data on 969 lambs collected over a 10-year period (1978-1987) on Dorper sheep were used i...

Enlace original: https://cgspace.cgiar.org/handle/10568/49793

Investigación en Agricultura
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Inyangala, B.A.O. ,  Rege, J.E.O. ,  Itulya, S. ,  [Growth traits of the Dorper sheep. II. Genetic and phenotypic parameters] ,  Growth traits of the Dorper sheep. II. Genetic and phenotypic parameters
Journal Article 1991

Autor: Rege, J.E.O.

An original data set of 31, 661 lactation records of Kenyan Friesian cows covering the period 1968 through 1987 was used to develop part-lactation extension factors for milk yield, and to estimate genetic parameters for production and reproductive traits. Effects of herds and year were significan...

Enlace original: https://cgspace.cgiar.org/handle/10568/28853

Investigación en Agricultura
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Rege, J.E.O. ,  [Genetic analysis of reproductive and productive performance of Friesian cattle in Kenya. I. Genetic and phenotypic parameters] ,  Genetic analysis of reproductive and productive performance of Friesian cattle in Kenya. I. Genetic and phenotypic parameters
Journal Article 1991

Autor: Rege, J.E.O.

The Kenya Livestock Recording Centre progeny testing data base covering the period 1968 through 1987 was used to estimate genetic and phenotypic trends in Friesian cattle for milk yield of all lactations, first lactation milk yield, age at first calving, and calving interval. Annual genetic and p...

Enlace original: https://cgspace.cgiar.org/handle/10568/28852

Investigación en Agricultura
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Rege, J.E.O. ,  [Genetic analysis of reproductive and productive performance of Friesian cattle in Kenya. II. Genetic and phenotypic trends] ,  Genetic analysis of reproductive and productive performance of Friesian cattle in Kenya. II. Genetic and phenotypic trends
Journal Article 2002

Autor: Abegaz, S. Negussie, E. Duguma, G. Rege, J.E.O.

Variance components and genetic parameters were estimated for growth traits: birth weight (BWT), weaning weight (WWT), 6-month weight (6MWT) and yearling weight (YWT) in indigenous Ethiopian Horro sheep using the average information REML (AIREML). Four different models: sire model (Model 1), dire...

Enlace original: https://cgspace.cgiar.org/handle/10568/32974

Investigación en Agricultura
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Abegaz, S. ,  Negussie, E. ,  Duguma, G. ,  Rege, J.E.O. ,  [Genetic parameter estimates for growth traits in Horro sheep] ,  Genetic parameter estimates for growth traits in Horro sheep
Journal Article 1992

Autor: Rege, J.E.O. Wakhungu, Judi W.

Analyses trends in genetic and environemntal components of performance, to estimate levels of inbreeding and to quantify its effects on performance in order to identify which of these factors is responsible for the decline in performance at the Stud. Presents an evaluation of long-term breeding p...

Enlace original: https://cgspace.cgiar.org/handle/10568/28846

Investigación en Agricultura
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Rege, J.E.O. ,  Wakhungu, Judi W. ,  [An evaluation of a long-term breeding programme in a closed Sahiwal herd in Kenya. II. Genetic and phenotypic trends and levels of inbreeding] ,  An evaluation of a long-term breeding programme in a closed Sahiwal herd in Kenya. II. Genetic and phenotypic trends and levels of inbreeding
Conference Paper 1992

Autor: Inyangala, B.A.O. Rege, J.E.O. Itulya, S.

Data on 969 lambs collected over a 10-year period (1978 to 1987) on Dorper sheep at Ol'Magogo were used in this study. Lamb traits studied were weights from birth to yearling and absolute growth rates between adjacent stages of growth. Heritability estimates from paternal half-sib analysis were: ...

Enlace original: https://cgspace.cgiar.org/handle/10568/70832

Investigación en Agricultura
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Inyangala, B.A.O. ,  Rege, J.E.O. ,  Itulya, S. ,  [Growth traits of the Dorper sheep. II. Genetic and phenotypic parameters] ,  Growth traits of the Dorper sheep. II. Genetic and phenotypic parameters
Conference Paper 1996

Autor: Das, S.M. Rege, J.E.O. Shibre, M.

Twenty-five year (1965-89) data on the Blended goats from Malya Research Centre totalling 4799 records were analysed for live weights and growth traits from birth to 72 weeks of age. The Blended goat developed in Malya, Tanzania, is a stabilised three-way cross of the Kamorai (55%), Boer (30%) an...

Enlace original: https://cgspace.cgiar.org/handle/10568/70865

Investigación en Agricultura
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Das, S.M. ,  Rege, J.E.O. ,  Shibre, M. ,  [Phenotypic and genetic parameters of growth traits of blended goats at Malya, Tanzania] ,  Phenotypic and genetic parameters of growth traits of blended goats at Malya, Tanzania
Journal Article 2000

Autor: Rege, J.E.O. Toe, F. Mukasa-Mugerwa, E. Tembely, S. Anindo, D.O. Baker, R.L. Lahlou-Kassi, A.

A study was conducted to investigate the effect of season on, and to estimate heritabilities of, and genetic correlations among, semen and spermatozoa characteristics and the relationship of these characteristics with measures of testicular or scrotal size in 6-, 9- and 12-month old ram lambs of ...

Enlace original: https://cgspace.cgiar.org/handle/10568/29624

Investigación en Agricultura
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Rege, J.E.O. ,  Toe, F. ,  Mukasa-Mugerwa, E. ,  Tembely, S. ,  Anindo, D.O. ,  Baker, R.L. ,  Lahlou-Kassi, A. ,  [Reproductive characteristics of Ethiopian highland sheep. II. Genetic parameters of semen characteristics and their relationships with testicular measurements in ram lambs] ,  Reproductive characteristics of Ethiopian highland sheep. II. Genetic parameters of semen characteristics and their relationships with testicular measurements in ram lambs
Journal Article 1993

Autor: Rege, J.E.O. Famula, T.R.

Calving date (CD) records of 68896 polled Hereford dams of 120 682 calves were coded within herd-year-season with date 1 being the date the first calf was born. Factors affecting CD and its relationship with production traits were investigated. Early calving was found to be associated with high p...

Enlace original: https://cgspace.cgiar.org/handle/10568/28265

Investigación en Agricultura
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Rege, J.E.O. ,  Famula, T.R. ,  [Factors affecting calving date and its relationship with production traits of Hereford dams] ,  Factors affecting calving date and its relationship with production traits of Hereford dams
Conference Paper 1996

Autor: Okeyo Mwai, Ally Mosi, R.O. Rege, J.E.O. Shibre, M.

Phenotypeic and genetic trends of calving interval (CI), nine months corrected weaning weight (9MOWT) and calf weight, weaned/cow/year (cow index), were estimated on data from three ranches (Mogwooni, Galana and Oljorai) located in semi arid areas of Kenya. The number of records per herd varied b...

Enlace original: https://cgspace.cgiar.org/handle/10568/50933

Investigación en Agricultura
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Okeyo Mwai, Ally ,  Mosi, R.O. ,  Rege, J.E.O. ,  Shibre, M. ,  [Phenotypic and genetic trends of reproductive post-weaning growth: Cow productive traits in Kenyan Boran cattle] ,  Phenotypic and genetic trends of reproductive post-weaning growth: Cow productive traits in Kenyan Boran cattle

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