Hostname: page-component-78c5997874-s2hrs Total loading time: 0 Render date: 2024-11-08T06:32:02.075Z Has data issue: false hasContentIssue false

Further observations on the factors controlling fertility and foetal atrophy

Published online by Cambridge University Press:  27 March 2009

John Hammond
Affiliation:
From the Institute of Animal Nutrition, School of Agriculture, Cambridge University.

Extract

In a previous paper (1) some of the factors which control fertility in domestic animals were discussed. These for purposes of clearness in investigation were divided into two groups: (1) The factors which control the number of eggs shed; and (2) The factors which control the number of eggs which develop to reach birth size. By this means the way in which the various factors which affect fertility could be determined, for example, it was shown that the effect of age on fertility, the literature of which has been reviewed by Harris (2), is due to the number of eggs shed at each oestrus period. Young sows examined had on the average 14 corpora lutea in the ovaries while old sows had 20 corpora lutea.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1921

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

BIBLIOGRAPHY

(1)Hammond, . This Journal, 6, pt 3, 09 1914.Google Scholar
(2)Harris, . American Naturalist, 50, no. 593, 1916.Google Scholar
(3)Good, and Smith, . Jour. Bacteriology, 1, no. 4, 1916.Google Scholar
(4) Corner. Carnegie Institute, Washington, Pub. 222, 1915.Google Scholar
(5)Weymeersch, . Jour, de l'Anat. et Physiol. T. 47, 1911.Google Scholar
(6)Marshall, . Phil. Trans. B. 196, 1904.Google Scholar
(7)Strahl, and Henneberg, . Anat. Anz. B. 20, 21, 1902.Google Scholar
(8)Meyer, . Anat. Rec. 12, 1917.Google Scholar
(9)Fortuyn, . Arch, de Biologie, T. 30, 1920.Google Scholar
(10)Kuntz, . Anat. Rec. 18, 1920.CrossRefGoogle Scholar
(11)Stephenson, . Jour. Roy. Agric. Soc. of England, 42, p. 499, 1885.Google Scholar
(12)Allen, . Anat. Rec. 16, no. 2, 1919.Google Scholar
(13)Arlitt, and Wells, . Jour. Exp. Med. no. 6, 1917.Google Scholar
(14)Stookard, and Papanicolaou, . Jour. Exp. Zool. 26, 1918.Google Scholar
(15)Hertwig, . Arch. f. Microp. Anat. B. 82, 1913.Google Scholar
(16)Regaud, and Dubreuil, . C. R. Soc. de Biol. T. 64, 1908.Google Scholar
(17)Marshall, and Crosland, . Jour. Board of Agric. and Fisheries, 24, 03, 1918.Google Scholar
(18)Lloyd-Jones, and Hays, . Jour. Exp. Zool. 25, no. 2, 1918.Google Scholar
(19)Minot, . Jour, of Physiol. 12, 1891.Google Scholar
(20)King, . Anat. Rec. 11, no. 2, 1916.Google Scholar
(21)Hammond, . This Journal, 6, pt 3, 09 1914.Google Scholar
(22)King, . Anat. Rec. 11, no. 2, 1916.Google Scholar
(23)King, . Anat. Rec. 9, 1915.Google Scholar
(24)Zuntz, . Arch. f. Gynaek, B. 110, 1919.CrossRefGoogle Scholar
(25)Eward, . Proc. Iowa Acad. Science, 20, 1913.Google Scholar
(26)Weaver, . Missouri Agric. Exp. Sta. Bull. 163, 1919.Google Scholar
(27)Kansas Agric. Exp. Sta. Rep. 1918.Google Scholar
(28)Smith, and Welch, . Jour. Biol. Chem. 29, no. 2, 1917.Google Scholar
(29)Woll, . Jour. Dairy Science, 1, no. 6, 1918.CrossRefGoogle Scholar
(30)Hart, . Wisconsin Agric. Exp. Sta. Bull. 1919.Google Scholar
(31)Kaufmann, . Arch. Entwick. B. 37, 1913.Google Scholar
(32)Strahl, and Henneberg, . Anat. Anz. B. 20, 21, 1902.Google Scholar
(33)Myer, . Biol. Bull. Mar. Biol. Lab., Wood's Hole, 36, 1919.Google Scholar
(33a)Mall, . Johns Hopkins Hosp. Rpt. 9, 1900.Google Scholar
(34)Hill, . Q. J. Microp. Sci. 56, 19101911.Google Scholar
(35)Huber, . Jour, of Morphology, 26, no. 2, 1915.Google Scholar
(36)Kirkham, . Jour. Exp. Zool. 28, no. 2, 1919.Google Scholar
(37)Hill, and O'Donoghue, . Q. J. Microp. Sci. 59, 19131914.Google Scholar
(38)Pearl, . U.S. Dept. Agr. Bur. Anim. Industry Bull. no. 110, 1911.Google Scholar
(39)Marshall, . Trans. High, and Agric. Soc. 20, 1908.Google Scholar
(40)Koebner, . Arch. f. Gynaek. B. 91, 1910.CrossRefGoogle Scholar
(41)Machens, . Berlin Tierärtzl. Wchnschr. 31, no. 47, 1915.Google Scholar
(42)Marshall, . The Physiology of Reproduction, London, 1910, p. 592.Google Scholar
(43)Sandes, . Proc. Linnean Soc., New South Wales, 28, 1903.Google Scholar
(44)Robinson, . Trans. Roy. Soc., Edinburgh, 52, pt 2, 1918.Google Scholar
(45)Loeb, . Biol. Bull. Mar. Biol. Lab., Wood's Hole, 33, no. 2, 1917.Google Scholar
(46)Hunter, . Observations on Animal Oeconomy, London, 1792, p. 157.Google Scholar
(46a)Carmichael, and Marshall, . Jour, of Physiol. 36, 1908.Google Scholar
(47)Bond, . British Medical Journal, 2, 07, 1906.CrossRefGoogle Scholar
(48)Cramer, and Marshall, . Jour. Econ. Biol. 3, 1908.Google Scholar
(49)Weymeersch, . Jour, de l'Anat. et Physiol. T. 47, 1911.Google Scholar
(50)Fraenkel, . Arch. f. Oynaek. B. 68, 1903.Google Scholar
(51)Heape, . Jour. Roy. Agric. Soc. 10, 1899.Google Scholar
(52)Wisconsin Agric. Exp. Station Bull. 275, 1917.Google Scholar
(53)King, . Jour. Exp. Zool. 26, 1918.Google Scholar
(54)East, and Jones, . Inbreeding and Outbreeding, Philadelphia, 1919.Google Scholar
(55)Bauer, . Zeits.f. indukt. Abstam, u. Vererbungslehre, B. 1, 1908, and B. 3, 1910.Google Scholar
(56)Boyd, . Jour, of Heredity, 5, no. 5, 1914.Google Scholar
(57)Little, . Amer. Nat. 53, no. 625, 1919, and 54. no. 634, 1920.CrossRefGoogle Scholar
(58)Kirkham, . Anat. Rec. 11, p. 480, 19161917.CrossRefGoogle Scholar
(59)Ibsen, and Steigleder, . Amer. Nat. 51, no. 612, 1917.CrossRefGoogle Scholar
(60)Marshall, and Peel, . This Journal, 3, 1910.Google Scholar