HETEROSIS ASSESSMENT OF INTRA BREED TYPES CROSSING IN ONE SUMMER OLD COMMON CARPS

assessment of the effect of honey as a topical therapy for intra oral wound healing in rat.

چکیده ندارد.

Breed and Heterosis Utilization in Rotational and Composite Crosses

Breed and heterosis effects of American Zebu cattle.

The Brahman (American Zebu) has been evaluated in numerous crossbreeding studies throughout the Southern United States. Brahman females producing straightbred calves have usually been found to have a lower calving percentage, calf survival rate and weaning rate than other contemporary straightbreds, although they have been reported to be superior or competitive in some studies. Birth weights of...

Periodic rotational crosses. II. Optimizing breed and heterosis use.

Choice of the optimal number and sequence of breeds in a periodic cross was determined by comparing the trade-off between increased utilization of breed differences and decreased utilization of heterosis. It was shown that the change in mean efficiency resulting from adding the next best breed to the best conventional n-breed rotation is always less than the change in efficiency predicted from ...

Assessment of the effect of heterosis on semen parameters of two-breed crosses of Duroc, Hampshire and Pietrain boars

The study was performed on 4 609 ejaculates obtained from 32 boars, including 14 purebred and 18 two-breed crosses. The ejaculates were collected manually every 4-5 days. The study involved ejaculates collected from each boar from the first day of its insemination use until the day of semen depletion. Each ejaculate was assessed for the following physical parameters: ejaculate volume, sperm con...