The Influence of Thiouracil on Semen Quality in the Fowl ,

Shaffner, C. S.; Andrews, F. N.

doi:10.3382/ps.0270091

Cited by 56 publications

(22 citation statements)

References 18 publications

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“…Similarly, the absence of a significant relationship between concentration of spermatozoa and fertility is congruent with the findings of Shaffner andAndrews (1948), McCartney (1956), and Boone and Huston (1963) in fowl. However, several other fowl researchers, some more recent, believe it to exist (Cooper and Rowel1 1958;Kamar 1960;Mymrin et al 1972;Kamar and Razik 1973;Hartmann and Gleichauf 1974).…”

Section: Discussionsupporting

confidence: 89%

“…In fowl a positive correlation has been shown by many researchers (Shaffner and Andrews 1948;Allen and Champion 1955;Cooper and Rowel1 1958;McDaniel andCraig 1959, 1962;Kamar 1960;Smyth 1968; KamCan. J. Zool.…”

Section: Discussionmentioning

confidence: 78%

“…Semen volume was not significantly related to the fertility data ). In fowl, only two reports of such a correlation exist (Kamar 1960;Kamar and Razik 1973), while most researchers (Shaffner and Andrews 1948 ;McCartney 1956;Boone and Huston 1963;Smyth 1968;Hartmann and Gleichauf 1974) found no evidence of this relationship.…”

Section: Discussionmentioning

confidence: 85%

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Semen production of the American kestrel

Bird¹,

Laguë²

1977

Can. J. Zool.

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BIRD, D. M . , and P. C. LAGUE. 1977. Semen production of the American kestrel. Can. J. Zool. 55: 1351-1358.In 1975, semen was collected by massage from 18 randomly selected captive male American kestrels (Falco sparverius). The period of semen production extended for 103 days, beginning on March 19, while the mean duration of semen production was 73.6 days. Under natural light, semen production began at 123 h of daily light, peaked about 1% h, and decline considerably around June 21 at 153 h. Weather factors, i.e., temperature, barometric pressure, did not significantly (P > 0.05) affect semen collections or quality.The following means were calculated: semen volume, 12 pl; sperm concentration, 31 OOO/mm3; sperm count per ejaculate, 416 000; motility score, 78%; contamination with epithelial debris and urates, 67%; and semen colour, very pale to pale amber.The following significant (P < 0.05) correlations were found: body weight with semen volume (0.48) and sperm count per ejaculate (0.54); egg fertility with sperm count per ejaculate (0.65); semen volume with sperm count per ejaculate (0.84) and sperm motility (0.54); sperm count per ejaculate with sperm concentration (0.78); and sperm motility with sperm concentration (0.59) and sperm count per ejaculate (0.75). BIRD, D. M., et P. C. LAGUE. 1977. Semen production of the American kestrel. Can. J. Zool. 55: 1351-1358. C'est par une methode de massage que nous avons recueilli, en 1975, la semence de 18 miles choisis au hasard au sein d'une colonie en captivite. La production de semence s'echelonna sur 103 jours et dura 73.6 jours en moyenne, et ceci sous illumination naturelle. Les premiers ejaculats ont CtC recueilles le 19 mars sous 123 h de lumiere par jour, la production de semence atteignirent un sommet sous 13) h de lumitre parjour et se mit a diminuer, rapidement vers le 21 juin, sous 153 h de lumitre. Le climat, i.e., temperature, pression atmospherique, n'ont affecte d'une f a~o n significative (P > 0.05) ni les recoltes ni la qualite de la semence. Voici les moyennes calculCes sur les ejaculats: volume, 12 p1; concentration et nombre de spermatozoi'des, 31 OOO/mm3, et 416000, parametre de motilite, 78%, contamination par debris epitheliaux et acide urique, 67%, la couleur va de tres pile a orange pile. Les correlations suivantes se sont avertes significatives ( P < 0.05): poids du mile avec volume (0.48) et nombre de spermatozoi'des par kjaculat (0.54), fertilite avec nombre de spermatozoi'des par ejaculat (0.65), volume de I'ejaculat avec nombre de spermatozoldes par ejaculat (0.84) et motilite (0.54), nombre de spermatozoi'des par ejaculat avec concentration (0.78). motiliti avec concentration (0.59) et nombre de spermatozoi'des par kjaculat (0.75).

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Section: Discussionsupporting

confidence: 89%

Section: Discussionmentioning

confidence: 78%

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Semen production of the American kestrel

Bird¹,

Laguë²

1977

Can. J. Zool.

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“…The role of semen quality in at least some instances of male infertility has been demon¬ strated, but little is known of the mechanisms involved. Shaffner & Andrews (1948) demonstrated that semen quality was affected adversely by feeding a goitrogen to cocks but semen quantity was little affected. Fertility following artificial insemination (a.i.)…”

Section: Introductionmentioning

confidence: 99%

Distribution of Spermatozoa in the Oviduct and Fertility in Domestic Birds

Ogasawara¹,

LORENZ²,

BOBR³

1966

Reproduction

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Summary. Semen from low-fecundity cocks, characterized by relatively large numbers of spermatozoa with abnormal morphology, poor motility and sluggish metabolism, fertilized very few eggs when inseminated mid-vaginally, but produced moderate fertility when deposited in the uterus.The percentage of pre-ovipositally dead embryos was also increased in eggs fertilized by spermatozoa from low-fecundity cocks when these were deposited directly in the uterus.Few spermatozoa from low-fecundity cocks entered and/or survived in oviducal glands, especially in those of the uterovaginal junction.

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“…its potential for fertilization). Dye reduction time has been studied in avian semen by Shaffner & Andrews (1948), Bogdonoff & Shaffner (1954) and Cooper & Rowell (1957, 1958; oxygen consumption has been recorded by Winberg (1940), Lardy & Phillips (1943), Kosin (1944Kosin ( ,1958, Bade, Wiegers & Nelson (1956), Van Tienhoven (1960) and Goldberg & Norman (1961) (Burrows & Quinn, 1937) ; it was pooled, mixed 1 : 1 with diluent and intro¬ duced in 0-6 ml portions into the side arms of 16 ml Warburg flasks, containing 2·4 ml of the desired mixture of diluent and additives in the main body, and 0-2 ml of potassium hydroxide in the centre well. Flasks with manometers were equilibrated in the bath at 40°C for 15 min; they were tipped within 45 min of the first semen collection.…”

Section: Introductionmentioning

confidence: 99%

Respiratory Rate of Cock Spermatozoa as Affected by Oviduct Extracts

Ogasawara¹,

Lorenz²

1964

Reproduction

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Summary. Oxygen consumption of unwashed fowl semen was manometrically determined in diluents containing 10% suspensions of extracts from the five regions of the hen's oviduct. Extracts from the magnum (and, to a lesser extent, from the infundibulum) augmented the respiratory rate of the spermatozoa. High mechanical pressure or homogenization of the tissue was required for extraction of the active substance(s).The active material appears to be of large molecular size, very likely protein in nature; it is not present, in significant amounts at least, in blood or egg albumen. The significance of the substance from the magnum in increasing the metabolic activity of fowl spermatozoa is discussed.

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The Influence of Thiouracil on Semen Quality in the Fowl ,

Cited by 56 publications

References 18 publications

Semen production of the American kestrel

Semen production of the American kestrel

Distribution of Spermatozoa in the Oviduct and Fertility in Domestic Birds

Respiratory Rate of Cock Spermatozoa as Affected by Oviduct Extracts

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