A study was carried out to evaluate the secondary sexual characteristics of four strains of cocks, comprising of two (2) exotics; Bovan Nera Black (BNB) and Isa Brown (ISB), one (1) improved local strain, Shika Brown (SB) and one (1) unimproved local strain, normal feathered cock (NFC). A total of 64 birds (16 for each strain) at 36, 38, 40 and 42 weeks were used for the study. The result indic...

Editor-De Cock et al` note that waiting times to conception are significantly longer in the wives of men exposed to pesticides. They cite the evidence that the nematocide dibromochloropropane (DBCP) is associated with diminished sperm counts.2 It is worth noting that there is other evidence of hazard in these men. They reportedly have significantly high gonadotrophin concentrations although the...

To simplify 24-hour urine collection for epidemiological and clinical examinations, we devised a portable, semiautomatic urine sampling cup with divided partitions. The cup, 6.6 cm in diameter and 14 cm in height, is double-bottomed and has a pipe-shaped scale and a cock leading to the lower compartment. It is so devised that 1/m of the urine volume excreted into the upper compartment each time...

Crotaline snakes (family Viperidae, subfamily Crotalinae) are unique among snakes in the possession of facial pits situated on each side of the head between the nostril and the eye (Klauber, 1972). These organs are depressions with highly innervated membranes at their bases that have a heat-sensing function and that transmit information to the part of the brain that receives visual data (Desmou...