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Hybrid vigor in poultryAlbright, William Purvis January 1930 (has links)
No description available.
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The reaction of the fowl to pullorinsBrandly, Carl Alfred January 1930 (has links)
No description available.
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The comparative resistance of three breeds of chickens to the nematode Ascaridia lineata (Schneider)Pratt, Ivan January 1935 (has links)
Typescript, etc.
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74 |
A study of female genital tract motility in the domestic fowl.Chen, Ti-Wen. January 1967 (has links)
No description available.
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75 |
The effect of site of insemination on fertility, embryo mortality, progeny viability and sperm competition in the chicken.Etches, Robert J. January 1972 (has links)
No description available.
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76 |
A study of the peptide hydrolases of fresh and stored chicken semen and their relationship to fertility among genetically different groups of males.Bernon, Douglas Emile. January 1974 (has links)
No description available.
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A study of the inheritance of a dwarf isolate in the chicken and its effect on performance.Hsu, Pa Lang. January 1973 (has links)
No description available.
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78 |
Reproductive performance of broiler breeder sires in cages and the relationships of sire reproductive traits with juvenile traits and growth of offspring.Ansah, George Ackah January 1977 (has links)
No description available.
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Studies on immunosuppression in the chicken and its effects on Eimeria tenella infection.Araujo, Hyma Rita B. January 1971 (has links)
No description available.
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80 |
Modeling the Growth and Death Kinetics of Salmonella in Poultry Litter as a Function of pH and Water Activity.Payne, Joshua Bill 20 July 2005 (has links)
In order to assess Salmonella dynamics in a poultry production setting, two studies were conducted to evaluate how common environmental factors during production influence Salmonella populations in poultry litter. A field study was initially conducted to determine Salmonella prevalence, populations, serotypes, and antibiotic resistance in fresh excreta and litter from commercial North Carolina broiler farms. Litter pH, temperature, ammonia levels, moisture content, and water activity (A<sub>w</sub>) were also measured. The purpose of this field study was to assess the populations and prevalence of Salmonella present during grow-out along with how varying environmental growth parameters and management practices impact its growth, persistence and true risk for consumers. Field data were subsequently used to design a laboratory study that observed the combined effects of pH and A<sub>w</sub> at a constant temperature on the growth and decline of Salmonella spp. in inoculated litter for the purpose of predicting microbial behavior using statistical modeling. By understanding the growth and death kinetics of Salmonella based on environmental factors found normally during poultry production, production management strategies can be developed to reduce Salmonella populations on birds entering processing plants, thereby reducing the risk of foodborne illness for consumers.
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