scholarly journals Economic Consequences of Holstein Artificial Insemination Sire Selection by Independent Culling

1988 ◽  
Vol 71 (12) ◽  
pp. 3516-3520 ◽  
Author(s):  
T.H. Short ◽  
R.W. Blake
Keyword(s):  
Artificial Insemination ◽  
Economic Consequences ◽  
Independent Culling ◽  
Sire Selection

scholarly journals Costs and Risks for Sire Selection Strategies in Artificial Insemination

1981 ◽  
Vol 64 (3) ◽  
pp. 491-496 ◽  
Author(s):  
M. Schneeberger ◽  
A.E. Freeman ◽  
P.J. Berger
Keyword(s):  
Artificial Insemination ◽  
Selection Strategies ◽  
Sire Selection

USE OF LATER RECORDS IN DAIRY SIRE EVALUATION

1978 ◽  
Vol 58 (4) ◽  
pp. 615-620 ◽  
Author(s):  
H. H. NICHOLSON ◽  
L. R. SCHAEFFER ◽  
E. B. BURNSIDE ◽  
M. G. FREEMAN
Keyword(s):  
Artificial Insemination ◽  
Selection Intensity ◽  
Evaluation Procedures ◽  
Sire Evaluation ◽  
Percentage Survival ◽  
Highly Correlated ◽  
Dairy Sire ◽  
Sire Selection

First, second, and third lactation Ontario Record of Performance (ROP) 305-day milk records were analyzed separately to evaluate 246 Holstein sires. Second and third lactation records were analyzed with and without adjustment for realized selection intensity of each bull’s daughters on the basis of first lactation yield. The magnitude of adjustments for selection was small, but adjusted records gave sire proofs for second and third lactations that had a variance similar to proofs based on first lactation records. Proofs using adjusted records were more highly correlated with first lactation proofs and with percentage survival figures. One bull out of six significantly reranked on the basis of second or third lactation proofs compared to first lactation proofs. There possibly exists a sire by age of daughter interaction, but the size of the interchange does not warrant an immediate change in sire evaluation procedures or artificial insemination organization sire selection programs.

The effects of continuous sire selection on the structure and age composition of dairy cattle populations

1972 ◽  
Vol 15 (2) ◽  
pp. 103-110 ◽  
Author(s):  
C. J. M. Hinks
Keyword(s):  
Numerical Model ◽  
Dairy Cattle ◽  
Artificial Insemination ◽  
Progeny Test ◽  
Age Composition ◽  
Male And Female ◽  
Time Period ◽  
Breeding Programmes ◽  
Planning Problems ◽  
Sire Selection

SUMMARYA numerical model of male and female replacement processes is developed and used to construct a matrix which specifies the numbers of lactations of different parities expressed in a given time period by daughters of bulls used in artificial insemination (AI).Populations resulting from newly established AI breeding programmes contain an unduly high proportion of offspring by young bulls. Subsequently an equilibrium is reached in which offspring of young and tested bulls are present in proportions determined by the relative usage of the two types of sire and by differences in replacement rates amongst their progeny. Once an equilibrium has been reached the numbers of progeny sired by bulls lacking a progeny test proof is extremely small.The use of the technique to solve a number of specific planning problems is demonstrated.

scholarly journals A simulation model to evaluate the economic consequences of insemination programs in dairy herds: timed artificial insemination and sex-sorted semen

2018 ◽  
Vol 47 (0) ◽  
Author(s):  
Oscar Alejandro Ojeda-Rojas ◽  
Angela Maria Gonella-Diaza ◽  
Manoel Francisco de Sá Filho ◽  
Rubens Nunes ◽  
Augusto Hauber Gameiro
Keyword(s):  
Simulation Model ◽  
Artificial Insemination ◽  
Economic Consequences ◽  
Dairy Herds ◽  
Timed Artificial Insemination

Еnforcement of Property Rights and Conractual Obligations

2003 ◽  
pp. 83-100 ◽  
Author(s):  
A. Radygin ◽  
R. Entov
Keyword(s):  
Property Rights ◽  
Legal Framework ◽  
Economic Consequences ◽  
Theoretical Approaches ◽  
Contractual Obligations ◽  
Regional Authorities ◽  
Practical Recommendations

The paper deals with theoretical approaches to the problems of property rights and contractual obligations and with analysis of economic consequences of the imperfect enforcement system. In particular, the authors consider Russian experience in the sphere of corporate conflicts. Legal and practical recommendations related to the improvement of legal framework, judiciary reform, executory process and different federal and regional authorities are also presented.

Budget as an Instrument of Reproduction of Bureaucracy in Russia

2006 ◽  
pp. 87-96
Author(s):  
Yu. Shvetsov
Keyword(s):  
The State ◽  
Economic Consequences ◽  
Material Base ◽  
Characteristic Features

The article considers the problem of bureaucratisation of the state and the most important social and economic consequences of this phenomenon. The essence of bureaucracy has been revealed, characteristic features of its functioning in Russia have been analyzed; the material base of bureaucracy and its dominating status in the society have been substantiated. The conclusion has been made that the process of changing the role of the budget to serve the interests of bureaucracy is being accomplished.

The Role of Threat and Economic Uncertainty in Support for Scottish Independence

2014 ◽  
Vol 23 (1) ◽  
pp. 103-124 ◽  
Author(s):  
Daniel Kopasker
Keyword(s):  
Economic Consequences ◽  
Perceived Threat ◽  
Constitutional Change ◽  
Lack Of Information ◽  
Economic Expectations ◽  
Scottish Independence ◽  
The Individual ◽  
The Impact ◽  
Levels Of Support

Existing research has consistently shown that perceptions of the potential economic consequences of Scottish independence are vital to levels of support for constitutional change. This paper attempts to investigate the mechanism by which expectations of the economic consequences of independence are formed. A hypothesised causal micro-level mechanism is tested that relates constitutional preferences to the existing skill investments of the individual. Evidence is presented that larger skill investments are associated with a greater likelihood of perceiving economic threats from independence. Additionally, greater perceived threat results in lower support for independence. The impact of uncertainty on both positive and negative economic expectations is also examined. While uncertainty has little effect on negative expectations, it significantly reduces the likelihood of those with positive expectations supporting independence. Overall, it appears that a general economy-wide threat is most significant, and it is conjectured that this stems a lack of information on macroeconomic governance credentials.

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