scholarly journals Examination of Reproductive Performance of Roe Deer (Capreolus capreolus) in Hungary

2004 ◽  
pp. 33-38
Author(s):  
István Majzinger
Keyword(s):  
Reproductive Performance ◽  
Roe Deer ◽  
Capreolus Capreolus ◽  
Tooth Wear ◽  
High Fertility ◽  
Previous Pregnancy ◽  
Embryo Number ◽  
The Difference ◽  
Post Implantation ◽  
Implantation Period

The objective of the research partly is to compare the reproduction performance of the populations living in different regions with regard to some special characteristics (age, condition).When estimating the age through tooth wear and cementum-layer-counting there was a difference of 0.87 years in favour of the first one (r=0,840; p<0,001). I found cementum layers at 42% of the does in the study after examining the MI teeth.There was lose connection between the weight (eviscerated, with head and legs) and the KFI (r=0,296; p<0,01), and for further analysis, I used only the KFI as the index for condition.The regional average KFI varied from 0.24-0.37 in fawns, 0.82-1.73 in does, with individual extremes of 0-4.05. Within the examined regions the highest index belonged to the prime-aged does, while the 1-year-olds had a lower rate, and it was the lowest in the does older than 8 years.The rate of fertility was between 83,3(ns)-100% as we can see from the presence of the CL. All the examined does were fertile, except in one region, while among the female fawns in two regions I only found three with active ovaries. The average number of CL was 1.5-2.13, and this varied by regions; all in all it was the highest in the 2-7-year-old group (1.96) and in the ones over 8 years (2.00!), while it was lower in the does younger than 1 year (1.90). The high fertility of the does over 8 years is remarkable.I could examine the number of embryos in two regions during the post-implantation period, and beside 100% fertility I found significant differences among the does, which can be associated with the condition. The ratio of CL carriers and the pregnant does was 100% and 73% in the two regions, the average number of CL were 1.92 and 1.72, while the average embryo number were 1.83 and 1.36 per doe. The difference between the CL and the embryo numbers on the two regions were 5% and 21%. The difference (prenatal loss) is in connection with the age (age class) of the doe. It is possible, however, that in some cases oestrus was not followed by gestation. But in roe deer, owing to the commonly known lack of luteolysis-mechanism (Flint et al., 1994), the regression of the CL of the does that did not get pregnant takes place in December and January, so the CL found in January cannot prove a previous pregnancy, which might have been followed by an abortion.Although it has to be proven, it seems that the number of the CL (potential progeny) can be associated with the age (r=0,418; p<0,01) and the weight (r=0,312; p<0,01) of the doe, while the embryo number (realised progeny) is influenced by the age of the doe and probably by external factors.It is essential to continue and extend the research to increase the reliability of the results and their correlation.

scholarly journals Comparison of Reproductive Performance of the Roe Deer (Capreolus capreolus, L.) Among Different Regions

2006 ◽  
pp. 41-46
Author(s):  
István Majzinger
Keyword(s):  
Body Weight ◽  
Reproductive Performance ◽  
Roe Deer ◽  
Capreolus Capreolus ◽  
Corpora Lutea ◽  
Actual Number ◽  
Offspring Number ◽  
Region I ◽  
The Difference ◽  
Autumn And Winter

The potential and actual number of offspring of roe deer and the difference between these figures (prenatal and postnatal loss) significantly vary in each population yearly. The objective of this study is to examine the potential and actual number of offspring, the number of losses, and to find a link between the most important biological characteristics of does (body weight – BW, condition – KFI) and the number of raised offspring on four territories on the Great Hungarian Plain.Where the number of corpora lutea (CL) is the highest, there the losses are the highest as well, and the number of raised offspring is the lowest (region I.). Here, the rearing loss is double that of the weakest territory (region IV.). Rearing losses can be associated with the fenotype of does (BW, KFI) but environmental factors also have determinative importance. Where the number of twin-calving does was the highest, I found four times more does without a fawn than where the number of twin-calving does was the lowest. The nursing success was the best (the losses were lowest) in the region where the potential offspring (number of CL) was also the lowest, but the coverage of the habitat and the proportion of forests were largest. The food supply for the animals in autumn and winter are not enough, the structure of the habitat has to be improved as well, so that it might become adequate for game protection in extreme weather conditions.The results have to be considered as preliminary ones. It is essential to continue and extend the research to increase the reliability of the results.

scholarly journals Microbial, chemical-physical, rheological and organoleptic characterisation of roe deer (Capreolus capreolus) salami

2019 ◽  
Vol 8 (3) ◽  
Author(s):  
David Ranucci ◽  
Rossana Roila ◽  
Dino Miraglia ◽  
Chiara Arcangeli ◽  
Francesca Vercillo ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Rural Areas ◽  
Roe Deer ◽  
Meat Products ◽  
Capreolus Capreolus ◽  
Lipid Levels ◽  
Salmonella Spp ◽  
Local Economies ◽  
Game Meat ◽  
The Difference

Game meat and related products are important in the promotion of local economies and rural areas. Microbiological, chemical–physical, rheological and sensory characteristics of fermented meat products (salami) made by different percentages of pork and hunted roe-deer (Capreolus capreolus) meat were evaluated. The microbiological determination indicated that the products are safe to eat, as neither Listeria monocytogenes nor Salmonella spp. was isolated from the samples. The hygienic adequacy of the process was guaranteed, as there was below 3 log CFU/g of Enterobacteriaceae level in the final products. The proximal composition analyses showed lower lipid levels in comparison to pork salami. The difference in chemical composition affects the rheological and sensory traits of the final products; the products were harder and with higher gumminess when 50% of roe-deer meat was used. Game meat flavour and odour increased with the increasing percentage of roe-deer meat.

Tests of estimation of age from tooth wear on roe deer of known age: variation within and among populations

1999 ◽  
Vol 77 (1) ◽  
pp. 58-67 ◽  
Author(s):  
AJM Hewison ◽  
J P Vincent ◽  
J M Angibault ◽  
D Delorme ◽  
G Van Laere ◽  
...  
Keyword(s):  
Roe Deer ◽  
Estimation Error ◽  
Capreolus Capreolus ◽  
Tooth Wear ◽  
Maximum Error ◽  
Average Error ◽  
Low Degree ◽  
Age Variation ◽  
Reference Specimens ◽  
Two Populations

The rate of wear of ruminant teeth may vary according to diet, habitat, and individual tooth characteristics. This variation may cause error in estimating the age of wild ungulates from patterns of tooth wear. We tested the ability of 10 observers to accurately estimate age from observation of tooth wear in a large sample of jaws of known-age roe deer (Capreolus capreolus) from three populations. Although the average error was not large (±1.02 years), maximum error ranged from -5 to +6 years for jaws of animals between 1 and 7 years old, with observers generally overestimating the age of young animals and underestimating the age of old animals. We found significant differences among observers in estimation error. When a "jaw-board" of known-age reference specimens was provided, this observer effect was largely controlled for, but accuracy was not improved. Error was partly due to variation in tooth wear, both within and among populations. Initial cusp height of the first molar was lower, but tooth wear tended to be slower in one population than in the other two populations, possibly reflecting differences in diet and (or) habitat. Individual variation in tooth wear within populations was observed, possibly reflecting variation in tooth characteristics (e.g., enamel mineralisation), which was a source of error in age estimation from observation. Observers tended to underestimate the age of jaws with a relatively low degree of wear and vice versa. These results show that estimating the age of roe deer from observation of tooth wear produces biased results, severely limiting its application in population studies of this species.

scholarly journals Bigger teeth for longer life? Longevity and molar height in two roe deer populations

2007 ◽  
Vol 3 (3) ◽  
pp. 268-270 ◽  
Author(s):  
Vebjørn Veiberg ◽  
Atle Mysterud ◽  
Jean-Michel Gaillard ◽  
Daniel Delorme ◽  
Guy Van Laere ◽  
...  
Keyword(s):  
Life Expectancy ◽  
Diet Quality ◽  
Roe Deer ◽  
Capreolus Capreolus ◽  
Tooth Wear ◽  
Population Difference ◽  
Animal Life ◽  
Proximate Cause ◽  
Expected Longevity

The role of tooth wear as a proximate cause of senescence in ruminants has recently been highlighted. There are two competing hypotheses to explain variation in tooth height and wear; the diet-quality hypothesis predicting increased wear in low-quality habitats, and the life-history hypothesis predicting molar height to be related to expected longevity. We compared tooth height and wear from roe deer of known age from two contrasting populations of roe deer ( Capreolus capreolus ) in France: Trois Fontaines (TF) with good habitat and shorter animal life expectancy and Chizé (CH) with poor habitat and longer animal life expectancy. There was no population difference in tooth wear, leading to rejection of the diet-quality hypothesis. However, despite their smaller body size, initial molar height for animals from CH was larger than for animals from TF. This provides the first evidence that variation in longevity between populations can lead to differences in molar height within a species.

scholarly journals Selectivity of harvesting differs between local and foreign roe deer hunters: trophy stalkers have the first shot at the right place

2006 ◽  
Vol 2 (4) ◽  
pp. 632-635 ◽  
Author(s):  
Atle Mysterud ◽  
Piotr Tryjanowski ◽  
Marek Panek
Keyword(s):  
Life History ◽  
Cervus Elaphus ◽  
Red Deer ◽  
Roe Deer ◽  
Capreolus Capreolus ◽  
Evolutionary Processes ◽  
Antler Size ◽  
The Difference ◽  
The Right ◽  
The Relationship

Harvesting represents a major source of mortality in many deer populations. The extent to which harvesting is selective for specific traits is important in order to understand contemporary evolutionary processes. In addition, since such data are frequently used in life-history studies, it is important to know the pattern of selectivity as a source of bias. Recently, it was demonstrated that different hunting methods were selected for different weights in red deer ( Cervus elaphus ), but little insight was offered into why this occurs. In this study, we show that foreign trophy stalkers select for larger antlers when hunting roe deer ( Capreolus capreolus ) than local hunters, but that close to half of the difference in selectivity was due to foreigners hunting earlier in the season and in locations with larger males. The relationship between antler size and age was nevertheless fairly similar based on whether deer was shot by foreign or local hunters.

Description of post-implantation embryonic stages in European roe deer (Capreolus capreolus ) after embryonic diapause

2017 ◽  
Vol 46 (6) ◽  
pp. 582-591
Author(s):  
M. Beyes ◽  
N. Nause ◽  
M. Bleyer ◽  
F.-J. Kaup ◽  
S. Neumann
Keyword(s):  
Roe Deer ◽  
Capreolus Capreolus ◽  
Embryonic Diapause ◽  
Post Implantation

Morphological defects of epididymal spermatozoa in male roe deer (Capreolus capreolus) during the reproductive season

2015 ◽  
Vol 18 (3) ◽  
pp. 565-572 ◽  
Author(s):  
K. Kozioł ◽  
M. Koziorowski
Keyword(s):  
Roe Deer ◽  
Capreolus Capreolus ◽  
Reproductive Season ◽  
Optimal Methods ◽  
Morphological Defects ◽  
Epididymal Spermatozoa ◽  
The Difference

Abstract The aim of this study was to analyse the morphology of the epididymal spermatozoa of male roe deer obtained postmortem at the beginning (May), peak (July/August) and the end (September) of the reproductive season. Spermatozoal abnormalities were divided into major (associated with impaired fertility) and minor (not associated with impaired fertility) defects. The highest percentage of abnormal spermatozoa was observed in May (17.78 ± 1.88%), with a much higher proportion of major (12.35 ± 1.11%) than minor defects (5.43 ± 1.59%) being observed. The percentage of abnormal spermatozoa was lowest during the peak of the reproductive season (4.97 ± 1.13%), with the proportion of major (2.68 ± 0.78%) and minor defects (2.28 ± 0.45%) being comparable during this period. The percentage of abnormal spermatozoa increased again in September (11.05 ± 1.60%), with the major defects (6.15 ± 1.04%) slightly surpassing the minor defects (4.90 ± 0.77%); however, total abnormalities still remained lower than those found in May. These differences were statistically significant, with the exception of the difference in minor defects between the pre-rut and post-rut periods. These results indicate that the best period to collect epididymal spermatozoa from roe deer postmortem is the peak of the reproductive season (July/August); however, they can also be recovered at the end of the reproductive season (September), as the percentage of major defects is relatively low at this time. This study provides the basis for further research to determine optimal methods for the storage and cryopreservation of epididymal spermatozoa in this species.

scholarly journals Comparative characteristics of metatarsal bones (Ossa metatarsi) and finger articles (Ossa digitorum pedis seu phalanges digitorum) of roe deer (Capreolus capreolus) and sheep (Ovis aries) in orderto determine animal species

2016 ◽  
Vol 70 (3-4) ◽  
pp. 111-119
Author(s):  
Milos Blagojevic ◽  
Zora Nikolic ◽  
Zoran Zoric ◽  
Dejana Cupic-Miladinovic
Keyword(s):  
Animal Species ◽  
Soft Tissues ◽  
Roe Deer ◽  
Capreolus Capreolus ◽  
Ovis Aries ◽  
Species Determination ◽  
The Third ◽  
Metatarsal Bones ◽  
The Difference ◽  
Single Bone

Metatarsal bones and finger articles of roe deer and sheep are rarely used for animal identification. In practice there are frequent cases where on a corpse the head and distal parts of the limbs are missing. That is in order to prevent the identification of the bones, by which it is easiest to determine the animal species. For identification of metatarsal bones (Ossa metatarsi) as well as finger articles (Os?sa digitorum pedis seu phalanges digitorum) there were used distal parts of hindlimb bones, taken from 6 roe deers and 7 sheep. Afer the separation from the soft tissues, the bones were boiled in an autoclave, and for bleaching and degreasing they were kept in 3% solution of hydrogen peroxide (H2O2). The bones were air dried, and then photographed. In roe deer, four metatarsal bones are developed: the second (Os metatarsale secundum), the third (Os metatarsale tertium), the fourth (Os metatarsale quartum) and the fifth (Os metatarsale quintum). In sheep, the third (Os metatarsale tertium) and the fourth (Os metatarsale quartum) metatarsal bones are developed. Both in roe deer and sheep, the third and the fourth metatarsal bones are fused into one single bone - main metatarsal bone. In sheep, on dorsal and plantar side of these bones there are grooves which are more shallow and wider than in roe deer. In roe deer, hindlimbs have four fingers, and in sheep two. In roe deer there is also the difference in the number of articles on the second and fifth finger. In this animal the second and fifth finger have coalesced the first and second article (Ph1 + Ph2) and the third article(Ph3). Based on the third article of the third and fourth finger, it may be distinguished one animal from another. Margo solearis in roe deer is peaky and in sheep it is blunt. In roe deer Processus extensorius is peaky on Margo coronalis, while in shee it is blunt. In the cases when material (fresh meat, blood, hair) necessary for some laboratory methods is missing, there is used the method of animal species determination based on morphological differences between the bones of these two animals. By this method it can be with certainty determined which animal the bones belong to.

Determinants of Aggregate Fertility in Pakistan

1986 ◽  
Vol 25 (4) ◽  
pp. 553-570
Author(s):  
Ghulam Yasin Soomro
Keyword(s):  
Developing Countries ◽  
Economic Status ◽  
Development Planning ◽  
Natural Increase ◽  
High Fertility ◽  
Household Level ◽  
Fertility Behaviour ◽  
Human Fertility ◽  
Control Programmes ◽  
The Difference

Experiencing high fertility and declining mortality levels, the developing countries are today faced with the problem of relatively high rates of natural increase in their populations. This pace of growth in population, influenced by high fertility levels, impedes the overall development planning. As pointed out in a document prepared by the Planning Commission of Pakistan, 'A vicious circle is set in motion in which high fertility and socio-economic stagnation breed upon each other' [5]. In the developing countries, development programmes including birth control programmes are in operation. The sustained high fertility levels, therefore, call for more insights into the mechanisms operating in the society and influencing fertility. Studies of fertility behaviour are conducted at both micro and macro levels. The difference between micro and macro is a matter of emphasis rather than one of kind, and both approaches are concerned with each level of social aggregation. Macrolevel studies describe the level and pattern of change resulting from the ongoing socio-econornic development in the society as a whole and do not explain variations in fertility at the household level [12]. However, development programmes, which are implemented at aggregate levels defined by geographical boundaries, influence the population in terms of socio-economic status and fertility behaviour. There are many factors which affect human fertility individually or collectively. Attempts have been made to identify these factors, and conceptual frameworks have been developed to explain the causal hypotheses. In this context mention may be made of the demographic transition theory, which is often applied to study fertility behaviour.

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