Transgenic mice possessing an ovine growth hormone gene were used to study the effects of elevated growth hormone on quantitative genetic variation. Males hemizygous for the transgene were mated to wild-type females to produce half- and full-sib families in which approximately half the progeny were transgenic and half were wild type. Analyses of body weights at 3-10 weeks, and weight gains from...

A resource population of ewes derived from Dorset and Romanov grandparents was generated over 5 yr to provide genotypic and phenotypic data to estimate effects of each callipyge genotype on component traits of reproduction. Effects on ovulation rate were estimated from data recorded by examination of ovaries from serially slaughtered ewe lambs (n = 174) born in 1994 and 1995. Productivity and l...

A military post on the Indus 54 miles south of Peshawur, 14 from Attock, and through a hot, dusty, dull, outof-the-way, isolated, little sandy oasis,?a very healthy station occupied by a Cavalry regiment or a battery of Artillery. No civilians, no metalled roads, scanty rainfall, tantalizing clouds: plenty of wild sheep, and in the luxuriant corn abundance of quail. Ice and other necessaries pr...

Fatty acid composition of lipid components as a part of recipes of meat products has been investigated. Factors influencing the results of analytical determination of individual fatty acids are shown. The main ratios of fatty acid composition describing fats of sheep, sow, boar, cow, turkey, horse, chicken, pheasant, and wild boar are presented, allowing their use in manufacture of modern meat ...

Genetic selection in wild living animals favours a variety of different traits that are important for maintenance, and reproduction. In contrast selection in domesticated animals not only favours individuals that can cope best with the modified circumstances of living under human custody but also is artificially influenced by the needs of man, e. g. for fast growth or high reproductivity, but a...