Estimation of genetic and phenotypic parameters for growth and reproductive traits for red deer on an upland farm

1991 ◽  
Vol 53 (2) ◽  
pp. 227-235 ◽  
Author(s):  
C. M. McManus ◽  
W. J. Hamilton
Keyword(s):  
Growth Rate ◽  
Cervus Elaphus ◽  
Red Deer ◽  
Genetic Parameters ◽  
Selection Criterion ◽  
Reproductive Traits ◽  
Heritable Variation ◽  
Weaning Weight ◽  
North East ◽  
The North

AbstractGenetic and phenotypic parameters were estimated for farmed red deer (Cervus elaphus) in an upland environment in the north-east of Scotland. Genetic parameters were estimated using restricted maximum likelihood analyses. Heritabilities of pre-weaning traits associated with growth were moderate for birth weight (0·27 (s.e. 0·04)), weaning weight, generally in September at 3 months of age (0·21 (s.e. 0·06)) and growth rate from birth to weaning (0·15 (s.e. 0·03)). Heritabilities for post-weaning traits were 0·10 (s.e. 0·05) for turn-out weight in April/May, 0·14 (s.e. 0·06) for September weight, at 15 months of age, 0·08 (s.e. 0·05) for growth rate weaning to turn-out and 0·12 (s.e. 0·06) for growth rate turn-out to September. Correlations between weaning weight and post-weaning traits were high indicating the usefulness of weaning weight as a selection criterion for red deer on upland farms. While Wapiti (Cervus elaphus canadensis) crosses grew faster than pure red deer they also tended to have higher mortality rates pre-weaning. Older dams were more likely to have a successful pregnancy and also tended to calve earlier. Date of calving was found to show no heritable variation in this study.

The population of Red Deer (Cervus elaphus L., 1758) in Tulcea county (Romania)

2010 ◽  
Vol 53 (1) ◽  
pp. 351-356
Author(s):  
Sorin Geacu
Keyword(s):  
Cervus Elaphus ◽  
Red Deer ◽  
Forest Land ◽  
The West ◽  
Spreading Area ◽  
Deer Population ◽  
The North ◽  
Natural Expansion ◽  
North Western

The population of Red Deer (Cervus elaphus L., 1758) in Tulcea county (Romania) The presence of the Red Deer in the North-western parts of Tulcea County is an example of the natural expansion of a species spreading area. In North Dobrogea, this mammal first occurred only forty years ago. The first specimens were spotted on Cocoşul Hill (on the territory of Niculiţel area) in 1970. Peak numbers (68 individuals) were registered in the spring of 1987. The deer population (67 specimens in 2007) of this county extended along 10 km from West to East and 20 km from North to South over a total of 23,000 ha (55% of which was forest land) in the East of the Măcin Mountains and in the West of the Niculiţel Plateau.

Examining the impacts of red deer hind body condition score and pasture forage mass on calf weaning weight

2017 ◽  
Vol 57 (3) ◽  
pp. 466 ◽  
Author(s):  
D. R. Stevens ◽  
B. R. Thompson ◽  
G. W. Asher ◽  
I. C. Scott
Keyword(s):  
Body Condition ◽  
Cervus Elaphus ◽  
Red Deer ◽  
Body Condition Score ◽  
Restricted Feeding ◽  
Weaning Weight ◽  
Calf Growth ◽  
Total Milk ◽  
Condition Score ◽  
Average Body

The effect of pre-calving hind body condition and the interaction with pasture forage mass during lactation on calf growth and intake to weaning were investigated. Two-hundred and forty red deer hinds (Cervus elaphus scoticus × hippelaphus) of average body condition score (BCS) 3.5 were subjected to either ad libitum or restricted feeding for the 4 weeks before the expected start of calving (31 October) to create hinds of low (2.5) or high (3.5) BCS. The hinds were then grazed continuously on pasture of either low (<1200 kg DM/ha) or high (>2400 kg DM/ha) forage mass during lactation (29 October–25 March). In a 2 × 2 crossover design liveweight, liveweight gain and pasture intake were measured in both hinds and calves. Low hind body condition score (BCS 2.5) at the onset of lactation resulted in low calf weaning weight (46.9 kg) when forage mass was low, but not when forage mass was high (57.3 kg). High BCS (3.5) in hinds resulted in intermediate calf weaning weight when on low forage mass (51.2 kg) and high calf weaning weight when forage mass was high (56.6 kg). Both BCS and forage mass influenced calculated total milk production.

scholarly journals Estimates of genetic parameters and genetic trends for reproductive traits and weaning weight in Tabapuã cattle1,2

2015 ◽  
Vol 93 (11) ◽  
pp. 5175-5185 ◽  
Author(s):  
P. A. Bernardes ◽  
D. A. Grossi ◽  
R. P. Savegnago ◽  
M. E. Buzanskas ◽  
I. Urbinati ◽  
...  
Keyword(s):  
Genetic Parameters ◽  
Reproductive Traits ◽  
Weaning Weight ◽  
Genetic Trends

Within-farm estimates of genetic and phenotypic parameters for growth and reproductive traits for red deer

1993 ◽  
Vol 57 (1) ◽  
pp. 153-159 ◽  
Author(s):  
C. McManus
Keyword(s):  
Birth Weight ◽  
Maximum Likelihood ◽  
Eastern Europe ◽  
Red Deer ◽  
Genetic Parameters ◽  
Genetic Correlations ◽  
Reproductive Traits ◽  
The Other ◽  
The United Kingdom ◽  
Terminal Sire

AbstractGenetic and phenotypic parameters were estimated for farmed red deer on eight farms distributed throughout the United Kingdom. Genetic parameters were estimated using restricted maximum likelihood (REML) analysis. Heritabilities for date of calving were low on seven of the eight farms (< 0–05), while repeatabilities were low to moderate (0·06 to 0·37). Heritabilities of all weights tended to be moderate to high on most farms (0·31 to 0·49; 0·22 to 0·89; 0·33 to 0·48; 0·37 to 0·45 and 0·37 to 0·90 for birth weight, weaning weight, mid-winter weight, turn-out weight and other weights respectively). The exception was farm 8 for which heritability estimates were very low (<0·08). This is attributed to inbreeding effects on this farm. Phenotypic and genetic correlations between post-weaning traits tended to be high, indicating selection at any stage of growth will be expected to lead to an increased growth at the other stages. Animals whose bloodlines originated in the forests of Eastern Europe (Yugoslavia, Hungary, Germany) were heavier at all stages indicating their usefulness as ‘terminal sire’ breeds. Hinds of mainland ‘European’ parentage also tended to calve earlier.

scholarly journals Age and growth of European flounder from the Chupa Inlet (Kandalaksha Bay, the White Sea)

2019 ◽  
Vol 323 (2) ◽  
pp. 93-104 ◽  
Author(s):  
P.N. Yershov ◽  
A.A. Matvienko ◽  
D.A. Aristov
Keyword(s):  
Growth Rate ◽  
Age Structure ◽  
White Sea ◽  
The White Sea ◽  
North East ◽  
The North ◽  
Kandalaksha Bay ◽  
Onega Bay ◽  
European Flounder ◽  
Males And Females

We studied age structure, growth and distribution of European flounder Platichthys flesus at the sea in Chupa Inlet (Kandalaksha Bay, the White Sea). Immature and mature fishes fed at shallows of Chupa Inlet and adjacent open sea area in June-August. Size-age and sex composition of fishes in catches are presented in the paper. Individuals of 17–27 cm length and 4–5 year age constituted the majority of catches (45%). On the whole, males numerically predominated over females in the samples. Analysis of sexual differences of growth has shown that females grew faster than males. The most intensive growth took place in July–August, according to the increments on the otoliths. Growth rate of the flounder from Chupa Inlet appeared to be similar to the growth rate of the flounder from other open shore sites of Kandalaksha Bay. We have compared also peculiarities of growth and age structure of flounder populations from Kandalaksha Bay to those from other bays of the White Sea. Significant differences of the growth rate were found between flounders from Kandalaksha, Onega, Dvina and Mezen' Bays. Both males and females from Onega Bay grew faster than other. Growth rate of fish decreased towards the north (Kandalaksha Bay) and the north-east (Mezen' Bay). The most slow-growing flounder inhabited shallows of Mezen' Bay. Statistical analysis has shown that age structure of flounder populations varied in different bays of the White Sea, and observed regional variations were characteristic for both males and females. Flounder population in Onega Bay was characterized by the dominance of the younger individuals compared to populations in other bays. The greatest mean age of flounder was registered in populations from the north-west (Kandalaksha Bay) and the north-east (Mezen' Bay) parts of the White Sea. Males and females in populations from Onega and Dvina Bays differed significantly in the mean age, and as a rule females were older. No age differences between sexes were found in flounder population of Mezen' Bay. We suppose that temperature conditions were among the main factors influencing regional differences in growth rate and age structure of the flounder populations in the White Sea.

Antler growth rate in yearling Iberian red deer (Cervus elaphus hispanicus)

2008 ◽  
Vol 54 (4) ◽  
pp. 753-755 ◽  
Author(s):  
E. Gaspar-López ◽  
T. Landete-Castillejos ◽  
L. Gallego ◽  
A. J. García
Keyword(s):  
Growth Rate ◽  
Cervus Elaphus ◽  
Red Deer ◽  
Cervus Elaphus Hispanicus ◽  
Iberian Red Deer ◽  
Antler Growth
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