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Filtering by: Creator Butterworth, Earl McKenzie Remove constraint Creator: Butterworth, Earl McKenzie Degree Field Animal Science Remove constraint Degree Field: Animal Science

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  • Some hormonal factors associated with the regulation of ewe reproductive patterns

    Creator:
    Reeves, Jerry John
    Abstract:
    Twenty-eight Columbia ewes were made available for study during their breeding and anestrous seasons. After the regularity of the estrous cycles had been established, eight of the ewes were sacrificed in pairs at four different stages of the estrous cycle. Eight additional ewes were sacrificed during anestrus. Pituitary glands, ovaries,...
    Resource Type:
    Masters Thesis
    Full Text:
    : Redacted for Privacy Earl F. Ellington Twenty -eight Columbia ewes were made available for study

  • Regulation of ovine pituitary function with estrogen alone and in combination with progresterone

    Creator:
    Osland, Robert Birger
    Abstract:
    Five experiments were conducted to study the activity of the pituitary gland in sheep as influenced by estrogen administered alone or in combination with progesterone. Particular emphasis was given to the study of gonadotropic activity. Mature wethers (experiments I, III, IV and V) or ewes (experiment II) were utilized as...
    Resource Type:
    Masters Thesis
    Full Text:
    assistance of Dr. Earl F. Ellington, Assistant Professor of Animal Science, for providing advice, guidance

  • Evaluation of tropical forages and by-product feeds for rabbit production

    Creator:
    Raharjo, Yono C.
    Abstract:
    An evaluation was made on the nutritive value of tropical forages and by-product feeds for rabbit production. Digestibility of nutrient fractions, feed preferences, growth, combination of forages, supplementation of micro and macro nutrients and/or effects of drying temperature on the quality of four groups of forages, namely woody legumes (WL),...
    Resource Type:
    Dissertation
    Full Text:
    ingredients for chickens. Bri. Poult. Sci. 18:475-482. Kratzer, F.H., L. Earl and C. Chiaravanont. 1974

  • Factors affecting prolactin secretion in the African elephant

    Creator:
    Bechert, Ursula S.
    Abstract:
    Prolactin (PRL) is a peptide hormone that is involved in a number of diverse physiologic roles, particularly with respect to reproduction, including: influencing sexual and parental behaviors, onset of puberty, regulation of seasonal reproduction, follicular maturation, ovulation, luteinization and corpus luteum (CL) function, steroidogenesis, mammary gland development and lactation, testicular...
    Resource Type:
    Dissertation