Results 221 to 230 of about 127,456 (263)

Male Reproductive Traits and Their Relationship to Reproductive Traits in Their Female Progeny: A Systematic Review

Reproduction in Domestic Animals, 2011
ContentsThe overall objective of one of the major research programs in the Co‐operative Research Centre (CRC) for Beef Genetic Technologies is to ‘Improve female reproductive performance’ in tropical, northern Australian beef cattle herds. To address this overall objective, a quantitative genetics project focused on investigation of male reproductive ...
Burns, B. M.   +4 more
openaire   +5 more sources

Reproductive traits in dicyemids

Marine Biology, 2003
Several characters involved in the life cycle in dicyemids were examined to understand reproductive strategy and adaptations to cephalopod hosts. In most dicyemids distinctly small numbers of sperms are produced in a hermaphroditic gonad (infusorigen). The number of eggs and sperms are roughly equal (means of the number of sperm:egg=1:1.58). An inverse
H. Furuya, F. G. Hochberg, K. Tsuneki
openaire   +1 more source

Estimation of genetic parameters for reproductive traits in alpacas

Animal Reproduction Science, 2015
One of the main deficiencies affecting animal breeding programs in Peruvian alpacas is the low reproductive performance leading to low number of animals available to select from, decreasing strongly the selection intensity. Some reproductive traits could be improved by artificial selection, but very few information about genetic parameters exists for ...
Juan Pablo Gutierrez   +2 more
exaly   +3 more sources

Phenotypic plasticity in the reproductive traits of a parasitoid

Journal of Insect Physiology, 2011
Organisms show phenotypic plasticity--the capacity for a given genotype to express different phenotypes--in response to changes in the environment. Among the several factors that can cause phenotypic plasticity, nutritional constraints during development can affect the size of organisms and, consequently, affect most life-history traits, including ...
Martel, Véronique   +2 more
openaire   +4 more sources

Quantitative trait loci for male reproductive traits in beef cattle*

Animal Genetics, 2004
SummaryThe objective of the present study was to detect quantitative trait loci (QTL) for male reproductive traits in a half‐sib family from a Bos indicus (Brahman) × Bos taurus (Hereford) sire. The sire was mated with MARC III (1/4 Hereford, 1/4 Angus, 1/4 Red Poll and 1/4 Pinzgauer) cows.
E, Casas, D D, Lunstra, R T, Stone
openaire   +2 more sources

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