Global ETD Search

351	An evaluation of the different techniques for measuring the feedlot efficiency of beef cattle Mountjoy, Robert Leroy, 1931- January 1954 (has links) No description available. Beef cattle -- Feeding and feeds. Feedlots.
352	The utilization of xanthophylls in the avian species Nakaue, Harry Sadao, 1932- January 1963 (has links) No description available. Xanthophylls. Eggs. Poultry -- Feeding and feeds.
353	Digestibility of milo and barley by beef cattle Saba, William Joseph, 1939- January 1964 (has links) No description available. Cattle -- Feeding and feeds. Milo. Barley.
354	Honey bee preferences for sugar solutions of varying composition and concentration Bachman, Walter Wilbert, 1949- January 1976 (has links) No description available. Bees -- Feeding and feeds. Bees -- Behavior.
355	Behavior and grazing preference of fistulated steers on a desert grassland Zemo, Tesfay, 1941- January 1968 (has links) No description available. Cattle -- Feeding and feeds. Grazing -- Arizona.
356	A study of the investment and operating costs of a cattle feeding enterprise in Arizona Roberts, Walter A., 1923- January 1952 (has links) No description available. Cattle -- Arizona. Cattle -- Feeding and feeds.
357	The effect of dietary calcium level and aqueous fluorine dose on the performance of growing rabbits. Lacy, Barbara A. January 1964 (has links) For almost a century both toxic and beneficial qualities have been ascribed to fluorine. During this time emphasis has been placed on many aspects of fluoride metabolism by different groups of workers. Farm animals are exposed to dietary fluorine from small amounts in most natural feedstuffs, from their water supply, from rock phosphate used as a mineral supplement, and from foliage grown in the vicinity of certain industrial operations. [...] Animal Science. Rabbits -- Feeding and feeds.
358	The effect of dietary energy levels and calcium source on the reproductive performance of caged turkey hens. Thompson, Judith Lee, 1958- January 1982 (has links) No description available. Turkeys -- Breeding. Turkeys -- Feeding and feeds
359	Feeding behaviour of the guppy, Poecilia reticulata (Pisces : Poeciliidae) Dussault, Gertrude V. January 1980 (has links) Digestive tracts of wild guppies, Poecilia reticulata (Pisces, Poeciliidae) contained mainly benthic algae and invertebrates. In the laboratory, guppies matured on diets consisting solely of Chlorococcum (Chlorophyceae), Daphnia, or dried fish food, but rates were slowest on algae. Fish grazing benthic algae performed rapid pecks with jaws maximally protracted to cover a relatively large area. Pecks were performed in series at intervals of 0.55 s. Jaw movements required 0.17 s, while substrate contact lasted 0.03 s. Ingestion/peck varied with fish size, sex and algal density. Males fed on lower densities and ingested more per peck than females of similar weight. Ingestion rates were high and showed no consistent daily pattern. Females had longer feeding bouts than males. / Dans la nature, l’appareil digestif du guppy, Poecilia reticulata (Pisces, Poeciliidae), contient principalement invertébrés et algues benthiques. En laboratoire, le taux de croissance des guppys nourris avec Chlorococcum (Chlorophyceae) fut plus lent que celui des poissons nourris avec la nourriture sèche ou des Daphnia. Les poissons se nourissant d’algues, accomplissent des mouvements d’ingestion rapides, avec leurs mâchoires maximalement ouvertes pour couvrir le plus d e sur f ace possible. Ce s mouvements se répétent en série, a intervalles de 0.55 s. Le mouvement d’ouverture des mâchoires dure 0.17 s, le temps de contact avec le substrat 0.03 s. Le rapport ingestion/bouchée varie avec la taille du poisson, son sexe et la densité des algues. Les mâles se nourrissent sur des plus faibles densités et ingérent plus par bouchée que les femelles du même poids. Les taux d’ingestion sont élevés et ne suivent pas de cycles journaliers. Les femelles ont des périodes d’ingestion plus longues que les mâles. fr Guppies -- Behavior Guppies -- Feeding and feeds
360	Protein juice from three forage legumes for use in swine rations Fillmore, Ann (Ann Elizabeth) January 1982 (has links) No description available. Plant proteins. Swine -- Feeding and feeds.

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