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Now showing items 11-20 of 45
Simulation of herbage dynamics and livestock grazing
(1982)
In order to accurately describe animals at pasture, it is necessary to have dynamic, dimensionally precise expressions of the relationships among the variables of animals, forage, land area and time. A dynamic, animal-unit ...
Winter diet composition and quality, and performance of cattle grazing burned and unburned gulf cordgrass rangeland
(1983)
Gulf cordgrass {Spartina spartinae (Trin.) Hitchc.} is a caespitose native warm season perennial grass which grows in low-lying areas of south Texas, especially along the Gulf Coast. Mature gulf cordgrass stands were ...
Comparative alkaline hydrolysis for the determination of tryptophan in feedstuffs and determination of the tryptophan requirements for 5 to 20 and 20 to 50 kilogram pigs
(1985)
Thirty two feedstuffs and lysozyme were hydrolyzed using either Ba(OH)2, NaOH or LiOH and analyzed by ion-exchange chromotography to determine which gave the most accurate and repeatable results. The tryptophan recovery ...
Laboratory studies relating to development of feeds and feeding systems for penaeid shrimp
(1983)
Laboratory studies were focused on developing feeds and feeding strategies for efficient postlarval and juvenile penaeid shrimp rearing through experimental manipulation of environmental factors and feed nutrient composition. ...
Production of Tilapia aurea in simulated sewage lagoons receiving laying hen wastes
(1980)
Experiments were carried out in the summers of 1978 and 1979 in 12 outdoor plastic-lined circular wading pools (about 7 m('2) in area) at the Aquaculture Research Center of the Texas Agricultural Experiment Station near ...
Potassium containing buffers as a source of potassium for ruminants during hot weather : effects on tolerance to heat stress and rumen fermentation
(1986)
Twenty-four lactating Holstein cows offered diets containing (1) no buffer (control), (2) 1.8% potassium bicarbonate, (3) 1.2% potassium carbonate, or (4) 1.5% sodium bicarbonate in the concentrate, consumed more diet 3 ...
The evaluation of Macrobrachium rosenbergii and Tilapia aurea polyculture in Texas
(1981)
The feasibility of polyculturing Macrobrachium rosenbergii and Tilapia aurea was examined in 500 m('2) earthen ponds in central Texas. Monoculture of each species was also undertaken to provide comparative data. Secondary ...
Effect of early protein restriction on growth and subsequent performance of egg-type chickens
(1987)
Fifteen crosses of day-old Shaver Single Comb White Leghorn egg-type chicks were used to study the effect of early protein restriction on growth and subsequent performance during lay. Four dietary protein regimes ...
Animal and sward behavior as affected by levels of forage on-offer
(1984)
A trial was conducted on pastures of Brazos bermudagrass in 1981 and 1982 to study both animal and pasture responses to grazing. Each pasture was divided into four paddocks to permit rotational grazing. Measurements were ...
Partial and total tract nitrogen digestion in ponies fed forages, cereal grains and protein supplements
(1982)
Mature, ileal cannulated ponies were used to quantify partial and total tract nitrogen digestibility of forages, cereal grains and protein supplements. Feed, ileal, fecal and urinary nitrogen was determined and nutrient:chromic ...