Department of Animal Sciences-Journal Articles

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Journal Articles (Animal Science)

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Browsing Department of Animal Sciences-Journal Articles by Author "Adegbola, A. A."

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    The Effect of Prolonged Feeding of Stylosanthes guyanensis Meal on Laying Performance, Egg Quality and Hatchability
    (Faculty of Agriculture, University of Ife, 1979) Onwudike, O. C.; Adegbola, A. A.
    The utilization of increasing levels of Stylosanthes guyanensis meal (stylo meal) by laying chickens feed for a period of nine months and the effect of increasing levels of vitamin A on the hatchability of eggs were studied using Single Comb White Leghorn birds. The feeding of stylo meal to laying birds lengthened the time taken by the birds to get to peak production. There was no significant effect on the average hen-day production percentage following the feeding of up to 20% stylo meal. The control diet in which there was no stylo meal however had a better production rate than any of the other diets. The feeding of stylo meal increased egg riboflavin content, egg hatchability and yold cholesterol level and depressed serum cholesterol level. The improved egg hatchability observed in this study could not be related entirely to the improved vitamin A status of the diets with the addition of stylo meal. It is suggested that the utilization of higher levels of stylo meal could be improved by a better amino acid balance and pelleting of the rations.
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    Preliminary Studies on the Oestrogenic Activity of Guinea Grass [Panicum maximum] var. S112 and Stylo [Stylosanthes gracilis]
    (Faculty of Agriculture, University of Ife, 1979) Adepoju, A.; Adegbola, A. A.; Ayininuola, S. I.
    Purified oestrogenic extracts were obtained from 25g samples of ground air dried leaf and stem portions of guinea grass (Panicum maximum var. S112) and stylo (Stylosanthes gracilis) at four stages of growth. 0.05ml of each of these extracts was injected into immature female mice weighing 8 to 10g in order to determine the oestrogenic activities of the forages at different stages of growth. The mean values obtained for the oestrogenic potency of guinea grass were 0.30, 0.23, 1.41 and 0.86 mcg of diethyl stilbestrol per kg of the leaf portion and 0.28, 0.15, 1.01 and 0.49 mcg of diethyl stilbestrol per kg of the stem portion at early vegetative, full vegetative, early bloom and full bloom growth stages respectively. Mean values for stylo leaf portion were 0.62, 0.85, 1.50 and 0.75 mcg of diethyl stilbestrol per kg, and those for the stem portion were 0.43, 0.62, 0.80 and 0.55 mcg of diethyl stilbestrol per kg at the early vegetative, full vegetative, early bloom and full bloom growth stages, respectively. The results indicated that the oestrogenic content of Stylosanthes gracilis was significantly higher (P .05) than that of guinea grass. for both forages, oestrogen activity was higher (P .05) in the leaf than in the stem, and the differences observed during the various stages of growth were significant.
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    Studies on the Feeding Value of Agro-Industrial By-Products for Livestock: 1. Consumer Acceptance of Beef from Cattle Fed Cocoa-pod Diets
    (Faculty of Agriculture, University of Ife, 1981) Smith, O. B.; Ladipo, P.; Adegbola, A. A.
    The effect of feeding cocoa-pod, hitherto considered a waste product, to cattle on the organoleptic qualities and consumer acceptance of the resulting beef was investigated. Two consumer acceptance tests were carried out, with the cooking method controlled in one and uncontrolled in the other. The results of the latter test showed that the favourite beef cooking method was to boil (or steam), fry and stew (40%), followed by boiling and stewing (34%). In both tests, beef from cattle fed cocoa-pod and control diets had similar scores (P. > 05) for both tenderness and flavour. Overall acceptability scores were also not different (P. > 05). The majority of consumers (75%) indicated a preference for beef as tender as the experimental samples obtained from rapidly grown cattle as opposed to the usually tougher market beef from older, range grown cattle. Apparently, feeding cattle cocoa-pod at dietary levels of up to 40% would have no adverse effect on the organoleptic qualities and acceptability of beef.