title: Plasma hormonal and electrolyte alterations in cycling buffaloes (Bubalus bubalis) during hot summer months.
abstract: Plasma levels of progesterone, prolactin, luteinizing hormone, and electrolytes were monitored by radioimmunoassay in ten cycling buffaloes maintained at Punjab Agricultural University, Ludhiana during the hot summer months of June-July. The plasma progesterone concentration ranged from 0.28 +/- 0.04 to 3.09 +/- 0.03 ng/ml at various stages of the oestrous cycle. Prolactin values ranged from 319 +/- 23 to 371 +/- 25 ng/ml and LH levels from 0.95 +/- 0.05 to 1.35 +/- 0.08 ng/ml. Concentrations differed significantly (P less than or equal to 0.05) at various stages of the cycle. Levels of electrolytes, viz. Ca++, Na+ and K+, were well within the normal range. The high levels of prolactin, progesterone and LH during the hot summer were assessed in relation to poor reproductive efficiency in buffaloes.
authors.affiliation: Department of Animal Science, Punjab Agricultural University, Ludhiana, India.
authors.forename: N
authors.initials: N
authors.lastname: Singh
authors.forename: K C
authors.initials: KC
authors.lastname: Chaudhary
mesh_terms: D000818:Animals; D002020:Buffaloes / Q000097:blood*; D004573:Electrolytes / Q000097:blood; D004971:Estrus; D005260:Female; D006728:Hormones / Q000097:blood; D006358:Hot Temperature / Q000009:adverse effects; D012621:Seasons; D014887:Weather
chemical_list: D004573:Electrolytes; D006728:Hormones