Age and Sex Composition

The system of veterinary and sanitary measures in the CJSC "Makeevo" of the Zarayskiy municipal district of the Moscow region was studied during 2015-2016. The tests were carried out on 2232 cattle with age and sex composition: 965 cows, 206 heifers, 186 heifers (2014 year of birth), 52 bulls (2014 year of birth,) 426 heifers (2015 year of birth), 397 male calves (2015 year of birth). The system of veterinary and sanitary measures to prevent infectious diseases of cattle have been developed on the basis of modern scientific achievements, taking into account many years of practical experience in Russia, includes a set of measures: an analysis of the current situation in the farm; identification of urgent priority measures, specialists training on the farm, monitoring of the proposed measures implementation; elaboration of the farm development plan. The results of the recommendations production tests and the system of veterinary and sanitary measures on number of cattle in the dairy farm enterprise through the modernization of the production process are presented. Application of organizational-economic, sanitary, diagnostic, preventive and therapeutic measures was allowed to protect 99.25% of animals from necrobacteriosis.

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Demography and Group Structure in Wedgecapped Capuchin Monkeys, Cebus Olivaceus

Behaviour ◽

10.1163/156853988x00520 ◽

1988 ◽

Vol 104 (3-4) ◽

pp. 202-232 ◽

Cited By ~ 44

Author(s):

John G. Robinson

Keyword(s):

Sex Ratio ◽

Life Table ◽

Group Structure ◽

Age Distribution ◽

Capuchin Monkeys ◽

Demographic Parameters ◽

Adult Size ◽

Sex Composition ◽

Cebus Olivaceus ◽

Age And Sex

AbstractThe extent to which population demography determines the age and sex composition of primate groups was examined using data from a population of wedge-capped capuchin monkeys Cebus olivaceus in central Venezuela. Demographic parameters were derived from censuses of individually recognized, aged, and sexed individuals living in nine groups over a ten year period. Animals were aged by extrapolation from census data. Animals of both sexes were classed as infants during their first year, and juveniles until they reached six years of age. Females reach sexual maturity at this time, while males were classed as subadults until they reached full adult size at age 12. Adulthood lasts at least 30 years in females, at least 24 years in males. Age-sex class specific mortality and fecundity rates generated a life table which indicated that the population was increasing (r = 0.087) between 1977 and 1986. The age and sex composition of the nine groups was described annually. On average, non-adults made up 60% of a group, with this percentage increasing with group size. There were more females than males in all groups in all years. The strong female-biased adult sex ratio (1:4.4) was a consequence of a biased birth sex ratio (1:1.9), higher female than male survivorship especially between the ages of 3 and 7 when males were dispersing, and a pronounced sexual bimaturism. The stable age distribution derived from the life table successfully predicted the observed average distribution of age-sex categories in groups. This suggests that the group structure of Cebus olivaceus groups is not a consequence of intragroup social interactions, but results from demographic parameters.

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Age and Sex Composition

The Methods and Materials of Demography ◽

10.1016/b978-012641955-9/50041-2 ◽

2004 ◽

pp. 125-173 ◽

Cited By ~ 9

Author(s):

Frank Hobbs

Keyword(s):

Sex Composition ◽

Age And Sex

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Moult, Movements, Age and Sex Composition of Mountain Duck, Tadorna tadornoides, Banded at Lake George, N.S.W

Wildlife Research ◽

10.1071/wr9760173 ◽

1976 ◽

Vol 3 (2) ◽

pp. 173 ◽

Cited By ~ 3

Author(s):

JL McKean ◽

LW Braithwaite

Keyword(s):

Sex Ratio ◽

Age Structure ◽

New South ◽

Sex Composition ◽

South Wales ◽

Two Samples ◽

Significant Difference ◽

Moult Migration ◽

Lake George ◽

Age And Sex

Two samples of mountain ducks totalling 1001 birds were trapped and banded at Lake George,N.S.W. A highly significant difference in age structure between the two samples, taken in January 1965 and in February 1970, may be related to major differences in rainfall for the year preceding each sample. The sex ratio was markedly biased in favour of females. Recoveries of birds were nearly all to the south and west and 300-700 km from the banding site. Fully 99 % of recoveries were in States other than New South Wales. Examination of one sample of 679 mountain ducks for moult of primary and secondary wing feathers showed that approximately one-third of the adults were moulting. It was concluded that the birds were possibly normal residents of the region in which most recoveries occurred, and that they make an annual moult migration to Lake George.

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Preliminary Report on the Norwegian Fishery for Small Whales: Expansion of Norwegian Whaling to Arctic and Northwest Atlantic Waters, and Norwegian Investigations of the Biology of Small Whales

Journal of the Fisheries Research Board of Canada ◽

10.1139/f75-129 ◽

1975 ◽

Vol 32 (7) ◽

pp. 1083-1094 ◽

Cited By ~ 10

Author(s):

Ivar Christensen

Keyword(s):

North Atlantic ◽

Preliminary Report ◽

Economic Factors ◽

Sex Composition ◽

Northwest Atlantic ◽

Length Group ◽

Denmark Strait ◽

Minke Whales ◽

East And West ◽

Age And Sex

Whaling for minke whales commenced off Norway in the 1920s. The fishery expanded to the Shetland–Faeroe Islands by 1938–39, to Denmark Strait by 1966, and to Labrador in 1969. Bottlenose whale catches have declined, partly due to economic factors. Modern catches of minke whales are 2000–2500 per annum. Evidence from length-group frequencies and sex composition indicate separate minke stocks in east and west North Atlantic. Segregation by age and sex is documented.

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Age and sex composition of small ruminants at Nouakchott markets, Mauritania

Small Ruminant Research ◽

10.1016/0921-4488(95)00805-5 ◽

1996 ◽

Vol 20 (3) ◽

pp. 281-284 ◽

Cited By ~ 4

Author(s):

E. Thys ◽

R.T. Wilson

Keyword(s):

Small Ruminants ◽

Sex Composition ◽

Age And Sex

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Socioeconomic determinants of mobility responses during the first wave of COVID-19 in Italy: from provinces to neighbourhoods

10.1101/2020.11.16.20232413 ◽

2020 ◽

Author(s):

Laetitia Gauvin ◽

Paolo Bajardi ◽

Emanuele Pepe ◽

Brennan Lake ◽

Filippo Privitera ◽

...

Keyword(s):

Local Structure ◽

Urban Areas ◽

Cell Phone ◽

Sex Composition ◽

Demographic Groups ◽

Targeted Interventions ◽

Historic City ◽

Second Wave ◽

Province Level ◽

Age And Sex

AbstractAs the second wave of SARS-CoV-2 infections is surging across Europe, it is crucial to identify the drivers of mobility responses to mitigation efforts during different restriction regimes, for planning interventions that are both economically and socially sustainable while effective in controlling the outbreak. Here, using anonymous and privacy enhanced cell phone data from Italy, we investigate the determinants of spatial variations of reductions in mobility and co-location in response to the adoption and the lift of restrictions, considering both provinces and city neighbourhoods. In large urban areas, our analysis uncovers the desertification of historic city centers, which persisted after the end of the lockdown. At the province level, the local structure of the labour market mainly explained the variations in mobility responses, together with other demographic factors, such as population’s age and sex composition. In the future, targeted interventions should take into account how the ability to comply with restrictions varies across geographic areas and socio-demographic groups.

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