Results 251 to 260 of about 230,319 (297)
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Animal Reproduction Science, 2000
The problems, aspects and methods of liquid storage and freeze-thawing of boar semen are discussed and a review is given on examination of spermatozoa by the recent fluorescent staining methods.
L A, Johnson +3 more
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The problems, aspects and methods of liquid storage and freeze-thawing of boar semen are discussed and a review is given on examination of spermatozoa by the recent fluorescent staining methods.
L A, Johnson +3 more
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Oligomerisation of Boar Acrosin
Hoppe-Seyler´s Zeitschrift für physiologische Chemie, 1980Boar acrosin, a glycoprotein present in the acrosome of spermatozoa, tends to aggregate in the absence of detergents and lipids. Self-association products were analyzed electrophoretically by the method of Ferguson. Molecular weights ranging from 44 000 up to 237 000 were found, corresponding to acrosin monomer up to hexamer.
W, Müller-Esterl, B, Zippel, H, Fritz
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Microvasculature of the epididymis in the boar
Cell and Tissue Research, 1990Microvasculature of the epididymis was investigated by scanning electron microscopy of vascular corrosion casts. The basic structure of blood supply to the boar epididymis consists of two superimposed vascular networks. Capillaries surrounding the epididymal duct constitute the inner level.
Stoffel M +3 more
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Theriogenology, 2008
Selection of boars by visual appraisal is the simplest and oldest method used by the swine industry. However, individual performance testing, and later use of computers to incorporate relatives' data and account for environmental variation, resulted in greater rate of improvement for economically important traits.
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Selection of boars by visual appraisal is the simplest and oldest method used by the swine industry. However, individual performance testing, and later use of computers to incorporate relatives' data and account for environmental variation, resulted in greater rate of improvement for economically important traits.
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Journal of Comparative Pathology, 1982
Abstract The clinical and histological features of scrotal haemangiomas in mature boars in Hong Kong and Fiji are described. Nomenclature of the lesions is discussed. Age, altered haemodynamic forces in the capillary bed of the dermis and genetic predisposition are suggested as factors involved in the development of these vascular overgrowths.
R. Munro, K.W. Head, H.M.C. Munro
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Abstract The clinical and histological features of scrotal haemangiomas in mature boars in Hong Kong and Fiji are described. Nomenclature of the lesions is discussed. Age, altered haemodynamic forces in the capillary bed of the dermis and genetic predisposition are suggested as factors involved in the development of these vascular overgrowths.
R. Munro, K.W. Head, H.M.C. Munro
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Impotence in the boar: angioarchitecture and venous drainage of the penis in normal boars
Veterinary Record, 1981Twenty penis from normal boars were injected with various media at known reservoir pressures and examined by radiography, dissection, maceration, clearing and sectioning. Injections into the corpus spongiosum penis (csp) produced dorsal deviation and clockwise spiral twisting.
R R, Ashdown, S W, Barnett
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Impotence in the boar 2: Clinical and anatomical studies on impotent boars
Veterinary Record, 1982Six boars were deficient in penile erection and incapable of intromission, but produced ejaculates containing spermatozoa. In five of these boars impotence was primary, but one boar had served normally for two seasons before showing secondary impotence. Sexual libido was good in two, moderate in two and poor in two of these animals. Post mortem studies
R R, Ashdown, S W, Barnett, G, Ardalani
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THE MORPHOLOGY OF BOAR SPERMATOZOA
Journal of the Royal Microscopical Society, 1956SYNOPSISThe morphological features of boar spermatozoa in freshly ejaculated semen and in semen exposed to various experimental treatments have been studied in stained smears and with the phase‐contrast microscope and the electron‐microscope.The spermatozoon of the boar closely resembles that of other domestic ungulates.
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The influence of boar libido on the efficacy of the boar effect
Animal Reproduction Science, 1994Eighty-one Large White/Landrace crossbred gilts were used in three replicates in this study. These gilts were allocated to one of three treatments, these being (1) control—no boar contact, (2) daily exposure to a low-libido boar, and (3) daily exposure to a high-libido boar. All treatments began at a mean gilt age of 160 days and continued for 60 days.
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