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Biomedical subjects

K A Yamani

Publications and source records attributed to K A Yamani.

6 recordsLinked to original sources
PubMed1976

The effect of light stimulus on Pekin ducks in the subtropics. Effect on the reproduction.

Experiments were carried out to study the effect of an extended light period (natural, gradual, and abrupt) on the semen characteristics, fertility, and hatchability of Pekin ducks. The results obtained can be summarised as follows: 1. Night feeding has no reliable effect on the semen production and characteristics in drakes. Thus, any improvement in the semen characteristics of different treated groups compared to the control may be traced back to light stimulus only. 2. Light stimulus showed a favourable effect on the semen volume and sperm motility, concentration, viability and normality during the two laying seasons. 3. Subjection of ducks to artificial light had a favourable effect on their fertility and hatchability.

Animals↗
PubMed1975

Preliminary study on using fermented skim milk in poultry rations.

80 (4 X 20) four-month-old cockerels were fed the following rations for six weeks: Group 1 = corn and green berseem, group 2 = corn, green berseem, and skim milk, groups 3 and 4 = corn, green berseem, and fermented skim milk. Feeding was ad libitum in groups 1 to 3, and 80% of the group 3 standard in group 4. The live weight increased in all groups during the experimental period. In group 4 it was higher at the end of the experiment than that of groups 1 to 3. But the difference was statistically not significant. The amount of starch units required per unit of live weight increase during the experimental period was 9.76 (group 1) 11.00 (group 2), 10.72 (group 3), and 9.66 (group 4). The visceral fat weights were higher in groups 2 and 3 (not significant). 40 (2 x 20) four-week-old ducklings were fed a commercial ration (group 5) or 65% of this ration supplemented with 35 ml of fermented skim milk (group 6). There were no significant differences in the live weight gains. The amount of starch units required per unit of live weight increase was 2.89 (group 5) and 3.61 (group 6).

Animal Feed↗