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| Registros recuperados: 126 | |
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| Guinnane, Timothy W.; Moehling, Carolyn M.; Grada, Cormac O. |
| Ireland's relatively late and feeble fertility transition remains poorly-understood. The leading explanations stress the role of Catholicism and a conservative social ethos. This paper reports the first results from a project that uses new samples from the 1911 census of Ireland to study fertility in Dublin and Belfast. Our larger project aims to use the extensive literature on the fertility transition elsewhere in Europe to refine and test leading hypotheses in their Irish context. The present paper uses a sample from the Dublin suburb of Pembroke to take a first look at the questions, data, and methods. This sample is much larger than those used in previous studies of Irish fertility, and is the first from an urban area. We find considerable support for... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Ireland; Fertility; Demography; Labor and Human Capital; J1; N3. |
| Ano: 2001 |
URL: http://purl.umn.edu/28434 |
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| Stott, Alistair W.; Gunn, George J.; Varo Barbudo, Antonio. |
| A survey of the management of reproduction on 66 Scottish suckler herds calving in spring 2003 was analysed using multiple regression. The predicted mean value of suckled calves produced was £237/cow (SE 1.8). The regression coefficients of the predictors was 0.74 (0.05), 15 (3.9) and 248 (16.5) for date of first calving, average number of 21-day calving periods (calving spread) and proportion of cows barren respectively. Improving each predictor by 1 SD had the combined potential to improve predicted calf value by £64/cow, over 80% of the current typical gross margin for this type of enterprise. Bull care had a significant influence on calving spread and number of biosecurity measures taken had a positive influence on the proportion of cows barren.... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Beef cow; Fertility; Economics; Management; Livestock Production/Industries. |
| Ano: 2008 |
URL: http://purl.umn.edu/36871 |
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| Sinha, Nistha. |
| The paper outlines a methodology that allows us to determine whether couples fertility is supply constrained based on the response they give to the subjective desired family size question. The central idea of the paper is that, when faced with the desired family size question, both constrained and unconstrained couples compare their demand for children with knowledge of their biological supply and unconstrained couples respond with a number while constrained couples respond with a qualitative response such as, It is Up to God (UTG), that essentially conveys the notion of demanding as many children as the supply function can yield. I then test this interpretation using data from Bangladesh. I find that controlling for demand side characteristics,... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Fertility; Desired fertility; Survey nonresponse; Consumer/Household Economics; J13; C25. |
| Ano: 2004 |
URL: http://purl.umn.edu/28461 |
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| Ribero, Rocio. |
| This paper analyzes how family structure and fertility alter children quality in Colombia. Reduced form models to determine marital status of women and number of children ever born are estimated considering factors that affect women's bargaining powers inside the marriage. Tentative estimates of structural interdependence between these variables and children outcomes are outlined, revealing that marriage has a positive link with child quality and fertility has a negative link with child quality. Colombian national household survey data at rural and urban levels are used for the estimations. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Family structure; Fertility; Child quality; Consumer/Household Economics; J00; J12; J13. |
| Ano: 2000 |
URL: http://purl.umn.edu/28390 |
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| Sinha, Nistha. |
| Despite the attractiveness of experiments from the perspective of program evaluation, there have been very few program experiments in the area of family planning. This paper evaluates an ongoing family planning program experiment in rural Bangladesh. The paper estimates the effect of mothers' program exposure on fertility and children's time allocation. The results show that while the program was effective in reducing fertility, it had no significant impact on children's school enrollment. However, the program appears to have significantly raised boys' participation in the labor force. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Fertility; Child labor; School enrollment; Program evaluation; Labor and Human Capital; J13; J22; I21. |
| Ano: 2003 |
URL: http://purl.umn.edu/28457 |
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| Dyer, Wendy Tanisha; Fairlie, Robert W.. |
| Using Current Population Survey (CPS) data from 1989 to 1999, we examine the impact of family cap policies, which deny incremental welfare benefits, on out-of-wedlock birth rates. We use the first five states that were granted waivers from the Department of Health and Human Services to implement family caps as natural experiments. Specifically, we compare trends in out-ofwedlock birth rates in Arkansas, Georgia, Indiana, New Jersey and Virginia to trends in states that did not implement family caps or any other waivers prior to the Personal Responsibility and Work Opportunity Reconciliation Act (PRWORA). We employ several techniques to increase the credibility of results from our natural experiment, such as the inclusion of multiple comparison groups,... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Welfare; Family caps; Fertility; Labor and Human Capital; I3; J1. |
| Ano: 2003 |
URL: http://purl.umn.edu/28431 |
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| Guinnane, Timothy W.; Moehling, Carolyn M.; Grada, Cormac O. |
| In most western societies, marital fertility began to decline in the nineteenth century. But in Ireland, fertility in marriage remained stubbornly high into the twentieth century. Explanations of Irelands late entry to the fertility transition focus on the influence of the Roman Catholic Church in Irish society. These arguments are often backed up by claims that the Irish outside of Ireland behaved the same way. This paper investigates these claims by examining the marital fertility of Irish Americans in 1910 and produces three main findings. First, the Irish in America had smaller families than both the rural and urban Irish and their fertility patterns show clear evidence of fertility control. Second, despite the evidence of control, Irish-Americans... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Ireland; United States; Fertility; Demography; Immigration; Labor and Human Capital; J13; N3. |
| Ano: 2002 |
URL: http://purl.umn.edu/28386 |
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| Hossain, Mohammad; Tisdell, Clement A.. |
| This paper examines the causal links between fertility and female labor force participation in Bangladesh over the period 1974-2000 by specifying a bivariate and several trivariate models in a vector error correction framework. The three trivariate models alternatively include average age at first marriage for females, per capita GDP and infant mortality rate, which control for the effects of other socio-economic factors on fertility and female labor force participation. All the specified models indicate an inverse long-run relationship between fertility and female labor force participation. While the bivariate model also indicates bidirectional causality, the multivariate models confirm only a unidirectional causality – from labor force participation... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Fertility; Female Labor Force Participation; Causality; Labor and Human Capital; C32; J13; J22. |
| Ano: 2003 |
URL: http://purl.umn.edu/106947 |
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| Felipe,L; Santos,EC; Tavian,AF; Góes,PAA; Moraes,VMB; Tonhati,H; Boleli,IC; Malheiros,EB; Barnabé,VH; Queiroz,SA. |
| There is little information on the nutrition of red-winged tinamous (Rhynchotus rufescens) reared in captivity, and their nutritional requirements still need to be determined. This study aimed at determining dietary crude protein requirements and testing four organic selenium supplementation levels in the diet of red-winged tinamous during the breeding season. Birds were housed in a conventional broiler house divided in 16 boxes with one male and three females each. Iso-energy (2800kcal ME/kg) pelleted feeds, based on corn and soybean meal, were supplied in tube feeders. In the first experiment, treatments consisted of four different diets containing different crude protein (CP) contents (15, 18, 21, or 24%) and in the second experiment, the four diets... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Egg weight; Fertility; Nutrition; Semen quality; Shell thickness. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000100010 |
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| Dolatifard,A; Jafari,MA. |
| ABSTRACT The aim of the current research was to study the effect of canola meal processing methods on the traits of egg, fertility, cecal microbial population, and the carcass of broiler breeder hens. Canola meal was processed by fermentation and enzymatic hydrolysis methods, then was fed to the hens. Four hundred and fifty broiler breeder hens of Ross strain weighing 3300±150 g (40 weeks) were used for 12 weeks. A completely randomized design was used with 6 treatments (unprocessed, processed by Lactobacillus Plantarum, Bacillus Subtilis, Aspergillus Oryzae, Neurospora Sitophila, and Alcalase enzyme) and 5 replications. Fifteen hens were included in each pen. The data collected were analyzed using the LSmeans procedure of SAS software. The treatment... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Caecum; Fermentation; Fertility; Processing. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000400308 |
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| Petter,Fabiano A.; Madari,Beata E.. |
| Due to the high activity of microorganisms, the loss of soil organic matter is high in tropical regions. This loss becomes even greater if the soil is managed improperly or when there is no technology that leverages the permanence of the soil carbon by maintaining appropriate levels of organic matter, providing chemical, physical and biological soil improvements and contributing to reduce CO2 emissions to the atmosphere. Due to its aromatic structure, biochar is a highly stable form of carbon in the soil that may contribute to the reduction of greenhouse gas emissions, such as CO2, N2O and CH4, and act as a soil conditioner, improving the physical and chemical properties of the soil. Biochar may also result in increased productivity due to the improvement... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pyrogenic carbon; Fertility; Yield; Greenhouse gas emission. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662012000700009 |
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| Morais,Rosana M. de; Redaelli,Luiza R.; Sant'Ana,Josué. |
| The reproductive success of the oriental peach moth was evaluated in four experiments: 1) assessment of the mating duration, fecundity, fertility and longevity of females paired with virgin and immediately mated males; 2) mating duration, spermatophore size, fecundity, fertility and longevity in females paired with virgin and up to four times mated males; 3) receptivity of females to additional copulations after mating with virgin or mated males, and the effects of this behavior in female fecundity, fertility and longevity; 4) influence of insects age in the reproductive output. Males (33%) could copulate immediately after a previous copula. They were fertile until the fourth mating, but only in the first copula they transferred the longest (1.43 ± 0.10... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Age; Copulations; Fertility; Oriental fruit moth. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262012000300009 |
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| Registros recuperados: 126 | |
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