Researches in the artificial insemination of pigs. Farrowihn rate of pigs inseminated once or twice in the same Oestrus:


ΕΛΕΥΘΕΡΙΟΣ Σ. ΕΛΕΥΘΕΡΙΟΥ
Abstract

By the present study the following points have been examined: 1. The characteristiques of semen taken from seven boars, which are as follow: Volume, 200- 422ml. Viability motility 65/4, 2 to 70-/4,4. Density, 156 to 249xl06 spermatozoa/ml. Total sperm per ejaculate, 33,9 to 60,3xlO9. 2. A method to estimate the concentration of semen was adapted for the boar's semen by using a photometer. 3. The farrowing rate of pigs inseminated once or twice in the same oestrus were 63,8 and 82,7% and the litter size 10,65 and 11,37 respectively.

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References
Bariteau,, F., Bussiere, J. and Courot M. (1976). Artificial insemination in the pig with fresh semen. Fertility trials with two extenders. Intern. Congr. Anim. Rept. Art. Ins. Krakow Vol. IV: 964-966.
Bennett, G.H., O'Hagan, C. and Stewart, D.L. (1968). The effect of length of storage time and numbers of spermatozoa on the fertility of diluted boar semen. VIe Gong. Intern. Reprod. Anim. Insern. Artif. Paris, Vol. II 997- 999.
Foote, R.H. (1974). «Artificial Insemination» Chap. 22 in «Reptoduction in Farm Animals» E.S.E. Hafej Philadelphia, Led and Febiger.
Haeger, O. and Mackle (1978) A two-phase diluter in the practice of pig insemination. Dtsch. Tierarztl Wschr 78:395-397.
Koh, T.J., Crabo, B.G., Tsou, H.L., and Graham, E.F. (1976). Fertility of liquid boar semen as influenced by breed and Season. J. Anim. Sci. 42:138-144.
Melrose, D.R. and O' Hagan, C. (1961). Investigation into the techniques of insemination in the pig. Proc. IVth Int. Congr. Anim. Reprod. The Hague 4. 855-859.
Melrose, D.R., Reed, H.C.B. and Pratt J.H. (1968). Developments in the use of pig. Artificial insemination by the farmer. VIe Cong. Intern. Reprod. Anim. Artif. Paris, 1968, Vor. II: 1087-1089.
Du Mesnil du Buisson and Signoret K.P. (1970). Reproduction Physiology and Artificial Insemination in pigs. Vet. Ree. 87:562-568.
Moore, H.D.M., Hibbiti, K.G., (1977). Fertility of boar spermatozoa after freezing in the absence of seminal vesicular proteins. J. Repr. Fert. 50 (2): 349-352.
Niwa, I., Ito, S., Kudo, Α., Mizuho, Α., and Soejima, A. (1959). Techniques of A.I. with Swine in Japan. Annls. Zootech. Paris, 8. Suppl. 97- 103.
Paquignon, M., Bussiere, J., Bariteau, F., Courot, M., (1977). Practical use of frozen boar semen. Journées Rech. Porc, en France, Paris, I.T.P. Ed., 19-21.
Paquignon M., Martinat-Botte F., Bariteau F., Bosc, M. J., Courot, M. Mauleon, P. Signoret, H.P. (1978). Preocupation et connaissances techniques en matière de reproduction porcine. Journées Rech. Porc, en France, Paris, 1978, 63-92.
Polge, G. (1956). Artificial Insemination in Pigs. Vet. Ree. Jun. 28th: 62- 76.
Pursel, V.G., Johnson, L.A., and Schulman L.L. (1973). Fertilizing capacity of boar semen stored at 15° C. J. Anim. Sci. 37:532-535.
Reed H.C.B. (1969). Artificial Insemination and Fertility of the boar. Br. Vet. J. 125:275-280.
Reed, H.C.B. Barlow, M. and Pratt, J.H. (1971) Use of two part insemination technique in the pig A.I. Semen Delivery service. Anim. Prod. 13:393.
Singleton, W.L. and Shelby, D.R. (1972) Variation among boars in semen chatacteristics and fertility J. Anim. Sci. 34:762-766.
Swierstra E.E. and Dyck G.W. (1976) Influence of the boar and ejaculation frequency on pregnancy rate and embryonic survival in Swine. J. Anim. Sci. 42:455-460.
Treu, H., Krause, D. (1977). Present position and problems of freezing boar semen. Tierjuchter 29(8):338-340.
Wilmut, I. Polge, C. (1977). The low temperature preservation of boar spermatozoa. 3. The fertilizing capacity of frozen and thawed boar semen. Cryobiology. 14(4) 483-491.
Young, D.C., Foote, R.H. turkheimer, A.R. and Hafs H.D. (1960). A photoelectric method for estimating the concentration of sperm in boar semen. J. Amin. Sci. 19:20-25.