Abstract
Seasonal variations in semen quality, freezability and plasma luteinizing hormone (LH) levels were studied between summer and spring. Semen volume, density and initial sperm motility did not differ significantly between different seasons. Plasma LH decreased between summer and spring but the differences were, however, not significant. Pre-freezing motility did not differ significantly but post-freezing motility varied significantly (P<0.01) between seasons. Post-freezing motility was lowest during summer and highest during winter. It can be concluded that summer spermatozoa may be fragile and cannot withstand freezing stress. To increase reproductive efficiency in buffalo during summer, semen should be frozen during winter and spring and used during hot weather conditions. Seasonal variations in plasma LH levels were insignificant.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Chaudhary KC, Gangwar PC (1977) Seasonal variations in physico-biochemical determinants of buffalo (Bos bubalis) semen and their relation to fertility. J Agric Sci Camb 89:273–277
Chinnaiya GP (1978) PhD Thesis, Kurukshetra University, India
Chinnaiya GP, Sarma PA, Ganguli NC (1981) Winter semen solves summer seasonality in buffalo breeding. Ind Dairyman 33:63–65
Courot M (1967) Endocrine control of the supporting and germ cells of the impuberal testis. J Reprod Fertil 2:89–101
D'Occhio M, Kinder JE, Schanbacher BP (1982) Patterns of LH secretion in castrated bulls (steers) during intravenous infusion of androgenic and estrogenic steroids: pituitary response to exogenous luteinizing hormone-releasing hormone. Biol Reprod 26:249–257
Evan JW, Roser JF, Mikuckis GM (1982) Comparison of the interaction of equine LH and human chorionic gonadotrophin to equine testicular receptors. J Reprod Fertil 32:113–121
Everett RW, Bean B (1982) Environmental influences on semen output. J Dairy Sci 65:1303–1310
Galil KAA, Setchell BP (1987) Effects of local heating of the testis on testicular blood flow and testosterone secretion in the rat. Int J Androl 1:73–85
Gangwar PC, Bahga CS (1979) Manganese and copper in buffalo bull semen during spring and summer. Ind J Dary Sci 32:243–246
Gill RS, Gangwar PC, Takkar OP (1974) Seminal attributes in buffalo bulls as affected by different seasons. Ind J Anim Sci 44:415–418
Goswami SB, Nair AP (1964) Effect of some climatological factors on reproduction of buffaloes (Bubalus bubalis). Ind J Vet Sci Anim Husb 34:127–134
Hafez ESE (1980) Reproduction in farm animals, 4th edn. Lea and Febiger, Philadelphia
Jegou B, Peake RA, Irby DC, Dekretser DM (1984) Effects of the induction of experimental cryptorchidism and subsequent orchidopexy on testicular function in immature rats. Biol Reprod 30:179–187
Kapoor PD (1973) Monthly variations in the semen quality of buffalo bulls. Ind J Anim Sci 43:573–578
Lunstra DD, Schanbacher BD (1988) Testicular function and Leydig cell ultrastructure in long-term bilaterally cryptorchid rams. Biol Reprod 38:211–220
McDonald LE (1980) Veterinary endocrinology and reproduction, 3rd edn. Lea and Febiger, Philadelphia
Matharoo JS, Singh M (1980) Revivability of buffalo-spermatozoa after deep freezing the semen using various extenders. Zentralbl Med (A) 27:385
Mieusset R, Bujan L, Plantavid M, Grandjean H (1989) Increased levels of serum follicle-stimulating hormone and luteinizing hormone associated with intrinsic testicular hyperthermia in oligospermic infertile men. J Clin Endocrinol Metab 68:419–425
Pandey MD, Raizada BC (1979) FAO production and health. Paper No. 13, FAO, Rome, pp 235–246
Parrott RF, Davies RV (1979) Serum gonadotrophin levels in prepubertally castrated male sheep treated for long periods with propionated testosterone, dihydrotestosterone, 19-hydroxy-testosterone or oestradiol. J Reprod Fertil 56:543–548
Rommerts FFG, Dejong FH, Grootegoed JA, Van der Molen HJ (1980) Metabolic changes in testicular cells from rats after long term exposure to 37° Cin vivo orin vitro. J Endocrinol 85471–479
Schanbacher BD, D'Occhio MJ, Gettys TW (1983) Pulsatile luteinizing hormone secretion in the castrated male bovine. Effect of testosterone or estradiol replacement therapy. J Anim Sci 56:132
Scheckter CB, Matsumoto AM, Bremner WJ (1989) Tesosterone administration inhibits gonadotropin secretion by an effect directly on the human pituitary. J Clin Endocrinol Metab 68:397–401
Snedecor GW, Cochran WG (1967) Statistical methods, 6th edn. Oxford and IBH, Calcutta.
Welsh TH, Randel RD, Johnson BH (1981) Interrelationships of serum corticosteroids, LH and testosterone in male bovine. Arch Androl 6:141–150
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Bahga, C.S., Khokar, B.S. Effect of different seasons on concentration of plasma luteinizing hormone and seminal quality vis-à-vis freezability of buffalo bulls (Bubalus bubalis). Int J Biometeorol 35, 222–224 (1991). https://doi.org/10.1007/BF01047289
Received:
Revised:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF01047289