Global ETD Search

31	Distribution and feeding interactions of the threadfin shad and juvenile gamefish in Patagonia Lake Cashman, Michael Robert, 1953- January 1988 (has links) Distribution, diet, and food availability for young-of-the-year (YOY) largemouth bass (Micropeterus salmoides), YOY bluegill (lepomis macrochirus) and threadfin shad (Dorosoma petenense) were studied to reveal any potential interactions in Patagonia Lake, a 170 ha (265 acre) recreational impoundment in Santa Cruz County, Arizona. Threadfin shad, a forage species, were stocked to enhance the growth of bass. As shad became abundant, limnetic zooplankton declined, reducing the primary food supply of the YOY game fish. Diet analysis showed very little food overlap between YOY gamefish and threadfin shad. Shad ate phytoplankton when zooplankton became scarce, and continued to grow well and reproduce. As zooplankton decreased, YOY gamefish shifted their diets to aquatic insects. After the shift, the gamefish did not grow well. The continuous overgrazing of zooplankton by large numbers of threadfin shad had an impact on the growth of the juvenile largemouth bass and bluegills. This impact may result in weak year classes in the future. Threadfin shad. Bluegill. Largemouth bass.
32	Cattle diets during spring and summer on desert shrub rangelands near Roosevelt Lake, Arizona Aguirre de Luna, Raymundo January 1980 (has links) No description available. Cattle -- Feeding and feeds -- Arizona. Range plants -- Research -- Arizona. Rangelands -- Research -- Arizona. Feces -- Microbiology.
33	The economic feasibility of on-farm feed milling for Arizona poultry ranches Schwabe, Barry Edward, 1952- January 1977 (has links) No description available. Poultry -- Feeding and feeds -- Arizona. Feed mills -- Arizona. Poultry industry -- Arizona -- Costs. Poultry -- Prices -- Arizona.
34	The economic feasibility of on-farm storage for Arizona poultry ranches Lammers, Mark Kevin January 1979 (has links) No description available. Poultry industry -- Arizona -- Costs. Poultry -- Feeding and feeds -- Arizona. Eggs -- Prices -- Arizona. Feeds -- Storage -- Arizona.
35	Japanese Honeydrip Sorghum Silage versus June Corn Silage for Milk Production Cunningham, W. S., Reed, J. R. 01 August 1927 (has links) This item was digitized as part of the Million Books Project led by Carnegie Mellon University and supported by grants from the National Science Foundation (NSF). Cornell University coordinated the participation of land-grant and agricultural libraries in providing historical agricultural information for the digitization project; the University of Arizona Libraries, the College of Agriculture and Life Sciences, and the Office of Arid Lands Studies collaborated in the selection and provision of material for the digitization project. Agriculture -- Arizona Sorghum as feed Sorghum -- Silage Corn as feed Corn -- Silage
36	Part I. - The Comparative Nutritive Value of Certain Locally Produced Poultry Rations, Part II. - Confinement Rearing Hinds, H. B. 08 1900 (has links) No description available. Agriculture -- Arizona Chickens -- Feeding and feeds -- Arizona Eggs -- Production -- Arizona Poultry -- Housing -- Arizona
37	FORAGE PREFERENCE OF CATTLE AND ELAND ON A DESERT GRASSLAND IN SOUTHERN ARIZONA Abdullahi, Ahmed Nasser January 1980 (has links) No description available. Cattle -- Feeding and feeds -- Arizona. Elands -- Feeding and feeds. Grazing -- Arizona -- Dos Arroyos Ranch.

Page generated in 0.0338 seconds