Semen dilution effects on reproductive performance in turkeys.
Abstract Interest in economizing with respect to the cost of poult production has prompted the use of semen diluents, with a view to reducing the number of toms required to inseminate a given number of turkey hens. In connection with this practice, there exists a fairly voluminous literature dealing with constituents of diluents for turkey semen; an access to this literature may be gained by beginning with Bajpai and Brown (1967). Brown (1971) referred to a study by Graham and coworkers in which semen diluted 1:2 with an insemination dose of .025 ml. gave as high fertility as undiluted semen. However, Brown (1970) found depressing effects on fertility due to dilution of semen and speculated that his results probably disagreed with those of Graham and coworkers because of such factors as season of the year, age of the breeders and frequency of insemination. The study reported here deals with the main…
Effect of Carbon Dioxide Diluents on the Fertilizing Capacity of Turkey Spermatozoa
Abstract LACK of information on a diluent containing carbon dioxide as a reversible induced Bajpai and Brown (1963a) to study the possibilities of using carbon dioxide diluents in storing turkey semen. Bajpai and Brown (1963a) reported that although the Illini Variable Temperature diluent (I.V.T.) and G-1 diluent (sodium glutamate substituted for sodium citrate in I.V.T.) containing carbon dioxide preserved turkey semen adequately in the laboratory both I.V.T. and G-1 diluent markedly inhibited the fertilizing capacity of turkey spermatozoa. However, in a subsequent study Bajpai and Brown (1963b) reported fairly good fertility (63 percent) with a glutamate diluent containing carbon dioxide and no egg yolk and poor fertility (35 percent) with a glutamate diluent containing 10 percent egg yolk by volume and no carbon dioxide. In the same year Harris et al. (1963) in a research note reported that the average fertility for turkey semen stored for six hours in a carbon …
The Effect of Some Diluents on Semen Characteristics of Turkeys
Abstract IT HAS long been recognized that, for artificial insemination to have widespread application, methods for diluting and storing semen are necessary. Van Tienhoven et al. (1958) reported some success with milk as a diluent for turkey semen, although the fertility obtained with semen diluted in milk was lower than that of undiluted semen. Fairly good fertility (64%) was reported by Lake (1960) for chicken semen diluted in a synthetic diluent containing monosodium glutamate (1.92 mg.%) as the main component. By using carbon dioxide as a reversible inhibitor, Vandemark and Sharma (1957) developed a room temperature diluent called the “Illini Variable Temperature Diluent” (I.V.T.) for bovine semen. Polge et al. (1949) and Clark and Shaffner (1960) obtained 54 to 40% fertility, respectively, in their attempts to preserve chicken semen by freezing. Lack of information on a diluent containing carbon dioxide as a reversible inhibitor of metabolism for chicken and turkey semen,…