Browsing by Subject "Major poultry science"
Now showing items 1-20 of 31
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(Texas A&M University. Libraries, 1980)The economics of egg production is greatly affected by the feeding program, rate of egg production and length of production. Profit can be maximized by controlling these three factors. This study has investigated the ...
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(Texas A&M University. Libraries, 1992)A well-defined subregion of the mammillary knob of the avian eggshell, designated the calcium reserve assembly (CRA), is identified as a specialized structure housing the calcium reserve for the embryo. Embedded in the ...
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(Texas A&M University. Libraries, 1964)
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(Texas A&M University. Libraries, 1994)Phenomenological association of alterations of immune system function at the time of puberty (e.g. involution of the chicken bursa of Fabricius) has led to postulation that the humoral immune system may negatively affect ...
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(Texas A&M University. Libraries, 1974)Students were conducted to determine the influence of cage and bottom types, new litter materials and housing regimes on the performance of commercial broilers and turkeys, respectively. This research measured the effect ...
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(Texas A&M University. Libraries, 1972)The first study was undertaken to determine the feasibility of supplementing low protein diets with the two most commonly limiting amino acids in laying diets methionine and lysine. Individually caged incrossbred pullets ...
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(Texas A&M University. Libraries, 1978)Economy of egg production is greatly affected by the quality of the egg shell and its ability ot withstand shock and resist breakage. The egg industry loses no less than 250 million dollars annually because of egg breakage ...
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(Texas A&M University. Libraries, 1978)Experiments were conducted with 380 Hy-line pullets fed dietary supplements of 0, 5, 10, or 15 percent sand for twelve 28-day periods and with 440, 120, and 540 day-old Hubbard x Hubbard broiler chicks fed diets with up ...
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(Texas A&M University. Libraries, 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 ...
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(Texas A&M University. Libraries, 1978)Research in this study was conducted in three phases. The firs t was concerned with the evaluation of the effect of carcass transfer and line transport, deboning operations, protein extraction and product wrapping, meat ...
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(Texas A&M University. Libraries, 1972)Studies were conducted to determine the effects of dietary density and ad libitum versus restricted feeding on the performance of layers from the same commercial genetic pool. Eight diets of different nutrient densities ...
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(Texas A&M University. Libraries, 1979)Two hundred and sixteen hens were divided into six treatment groups, each consisting of three replicates of twelve Single Comb White Leghorn hens, housed two birds per cage, in a study to determine the effects of dietary ...
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(Texas A&M University. Libraries, 1995)Two "modern" commercial broilers breeds (Indian River: IR and Hubbard:HU) and one older broiler breed (Athens-Canadian Randombred:AC) were evaluated with respected to growth rate, feed conversion, carcass composition, and ...
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(Texas A&M University. Libraries, [1971])Two studies were conducted to determine the effects of soybean meal (SBM), sesame meal (SM) and glandless cottonseed meal (GCSM) upon performance of inbred-cross layers. In the first experiment, two strains of birds (180 ...
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(Texas A&M University. Libraries, 1980)Four experiments were conducted with Indian River broiler chicks in which the protein and energy levels were fed in different combinations in an attempt to produce a broiler at 49 days of age with reduced body fat while ...
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(Texas A&M University. Libraries, 1985)Two experiments were conducted with commercial egg-type laying hens to determine the effects of housing body weight and parental egg weight on egg quality and laying hen performance. In experiment 1, egg production improved ...
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(Texas A&M University. Libraries, 1974)A study was undertaken to determine the feasibility of restricting the feed intake of hens fed a medium density diet. Performance traits, egg quality, and mortality of individually caged commercial layers, were studied for ...
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(Texas A&M University. Libraries, 1973)Hatching egg production from commercial broiler breeders housed in single and multiple male cages maintained in a naturally and in artificially ventilated houses was investigated. Twelve cages measuring 90x90x60 cm. and ...
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(Texas A&M University. Libraries, 1977)A closed population of White Leghorns was used in this study to evaluate the importance of additive and nonadditive genetic variance in the inheritance of egg yolk and blood serum cholesterol in chickens. A diallel mating ...
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(Texas A&M University. Libraries, 1967)