The effect of lambing performance on the face cover of ewes

1964 ◽  
Vol 4 (12) ◽  
pp. 86 ◽  
Author(s):  
RB Dun ◽  
BH Clinton ◽  
TH Crofts ◽  
JOC Furner ◽  
AC Godlee ◽  
...  
Keyword(s):  
Reproductive Performance ◽  
New South ◽  
Full Range ◽  
New South Wales ◽  
South Wales ◽  
The Face ◽  
Average Face

Face cover was scored on 1979 maiden ewes mated on seven commercial properties in New South Wales. Results from four muffled flocks (full range of face cover scores) showed a small regression of percentage ewes wet on face cover scored prior to mating (b = -2.9, P<0.01). There was no relationship between these measurements in three open faced flocks (no ewes with face cover above score 4). A second score for face cover, given when the ewes had lambs at foot, was very strongly related to percentage wet ewes (b = -7.5, P<0.001, for muffled flocks and b = -6.3, P<0.01, for open faced flocks). The importance of time of scoring in determining the strength of the relation between reproductive performance and face cover, was caused by wet ewes dropping 0.6 grades in average face cover score between mating and marking. Dry ewes maintained their level of face cover.

The association between face cover and the productivity of Merino ewes in twelve NSW flocks

1967 ◽  
Vol 7 (28) ◽  
pp. 412
Author(s):  
JP Drinan ◽  
RB Dun
Keyword(s):  
Reproductive Performance ◽  
New South ◽  
New South Wales ◽  
Negative Association ◽  
The Body ◽  
Positive Correlation ◽  
South Wales ◽  
Body Weights ◽  
The Face ◽  
Fleece Weight

The association between the face cover and productivity of more than 3000 Merino ewes has been examined in 12 flocks located in the major sheep producing areas of New South Wales. Each flock was divided into Open (scores 1 and 2), Moderate (scores 3 and 4), and Muffled (scores 5 and 6) groups. A significant negative association between face cover and reproductive performance was apparent in two flocks that contained appreciable numbers of muffled-faced ewes. A similar trend was apparent in another Muffled flock, but in one other Muffled flock and four Open flocks, there was no evidence of such an association. The results from the remaining four flocks were not considered, due to the possibility that the results were confounded by face cover scoring after joining. In one Muffled flock, the body weights of weaner lambs were negatively correlated with their dams' face cover. A relationship between face cover score and total greasy fleece weight, corrected for previous reproductive performance, was absent from most flocks and negative in two, despite evidence of a positive correlation with belly weight. There was a trend to inferior fleeces of finer trade count in Moderate and Muffled groups of several flocks. Excess face cover was found to be an undesirable attribute in Merino flocks. Its importance was greatest in flocks containing appreciable numbers of muffled-faced ewes

Effect of prolonged undernutrition on the recovery and reproductive performance of maiden Merino ewes

1967 ◽  
Vol 7 (24) ◽  
pp. 7 ◽  
Author(s):  
P McInnes ◽  
TJ Grainger ◽  
MD Smith
Keyword(s):  
Body Weight ◽  
Reproductive Performance ◽  
New South ◽  
New South Wales ◽  
The Other ◽  
First Year ◽  
Treatment Groups ◽  
South Wales ◽  
Feeding Trials ◽  
The Mean

Data are presented on the recovery and reproductive performance of 2 1/2-year-old maiden Merino ewes after a prolonged period of undernutrition. The 217 sheep had been hand-fed on a submaintenance ration in pen feeding trials at Glenfield, New South Wales. During the seven months of the trials they had lost 6 kg (28 to 22 kg) body weight. They were transported to Condobolin in south-western New South Wales, divided into two treatment groups and run on good quality pastures. One group was joined immediately (May 1959) and again ten months later, and the other group was mated after six months at Condobolin (in October 1959) and again 12 months later. The ewes recovered rapidly. The mean weight of both groups had reached 30 kg within six weeks and 40 kg within six months. In the first year 73 of the 100 May-mated ewes bore lambs, but only 38 of these lambs were weaned. Ewes bearing lambs had a higher body weight at the start of joining and gained more during joining than the barren ewes. At the other three joinings (October 1959, May 1960, October 1960) lambing percentage was from 86-89 and weaning percentage from 62-69-both normal for the district. The proportion of twin lambs (3-6 per cent) was low. Wool weight in 1959 was not affected by time of mating or by pregnancy.

Bird communities in remnant woodland on the New England Tablelands, New South Wales

2006 ◽  
Vol 12 (1) ◽  
pp. 50 ◽  
Author(s):  
S. J. S. Debus ◽  
H. A. Ford ◽  
D. Page
Keyword(s):  
New England ◽  
New South ◽  
Full Range ◽  
New South Wales ◽  
Bird Species ◽  
Bird Communities ◽  
Active Management ◽  
Private Land ◽  
Bird Species Richness ◽  
South Wales

We provide a geographic and landscape context for ongoing studies on bird communities in eucalypt woodland remnants on the New England Tablelands, New South Wales. We draw together several surveys that have not been published in the scientific literature, and integrate them with previously published material. A total of 142 woodland bird species, including 12 threatened species, was recorded in remnant woodland in the area above 900 m elevation from 50 km SSE to 100 km NNW of Armidals. There was a positive relationship between remnant size and bird species richness. Woodland reserves >300 ha supported significantly more species than remnants <100 ha on private land. Intensively surveyed reserves also had more species than remnants surveyed more casually. Threatened and other declining species occurred mainly in medium-sized (100-300 ha) and large reserves; foraging guilds of small to medium-sized, ground and above-ground insectivores were impoverished in degraded medium-sized and small remnants on private land. Almost the full range of woodland bird species was found at one or more sites, indicating their conservation value. However, some species were found in few sites or were only vagrants at a site. Active management will be needed to retain the current diversity of bird species in such heavily cleared landscapes.

Nature Conservation in Rangelands: Lessons From Research on Reserve Selection in New South Wales.

1992 ◽  
Vol 14 (2) ◽  
pp. 214 ◽  
Author(s):  
RL Pressey
Keyword(s):  
Conservation Planning ◽  
New South ◽  
Full Range ◽  
New South Wales ◽  
Reserve Selection ◽  
South Wales ◽  
Land Systems ◽  
The Difference ◽  
Selection Of

Information on the features to be protected in a system of conservation reserves is an obvious requirement. The quality of the data base will primarily determine the effectiveness of conservation planning in protecting the full range of natural features in a region. However, the way in which data are used to make decisions on the locations of protected areas is also critical. Rigorous procedures for reserve selection can make the difference between achieving reservation goals or not. Research on reserve selection in New South Wales over recent years has concerned both data bases and procedures for guiding decisions. Reserve planning in many regions is based largely on some form of land classification like vegetation types or land systems. There are good reasons for using such land classes to guide the selection of reserves and to judge their representativeness. Nevertheless, they can have considerable limitations as a basis for protecting all the species in a region. These limitations are reviewed with references to more detailed discussions of particular issues. The paper also reviews a variety of procedures for selecting reserves which have been tested and applied in New South Wales. Some of the recent procedures are conceptually simple but very useful in identifying the requirements of reservation goals and demonstrating the options available to planners for representing particular features. Three principles are proposed which should underpin any attempt at systematic conservation planning.

scholarly journals Effects of logging, fire and drought on possums and gliders in the coastal forests near Bega, NSW

1987 ◽  
Vol 14 (3) ◽  
pp. 263 ◽  
Author(s):  
D. Lunney
Keyword(s):  
Tree Species ◽  
New South ◽  
Full Range ◽  
Habitat Preferences ◽  
New South Wales ◽  
Coastal Forests ◽  
South Wales ◽  
Commercial Species ◽  
Pseudocheirus Peregrinus ◽  
Petaurus Breviceps

Seven species of possums and gliders were found during a survey in logged coastal forests near Bega, New South Wales. A study of the preferences for the various tree species showed that both commercial and non-commercial species must be retained to support the full range of possum and glider species. Spotlight searches were carried out in 6 adjacent felling areas each autumn from 1981 to 1983. Four species (Petaurus breviceps, P. australis, Petauroides volans and Pseudocheirus peregrinus) were seen frequently enough to determine their habitat preferences. There were significantly fewer possums and gliders in logged areas, with a greater effect on some species, e.g. P. volans, than others, e.g. P. breviceps. Fire rendered the logged areas even less habitable, and drought compounded the effects of logging and fire by further reducing numbers. Deep unlogged gullies were found to be crucial refuges from logging, fire and drought. The primary conclusions are that the current logging operation is causing a significant reduction in numbers, and that gullies need to be redefined to include all drainage lines and to remain unlogged.

Production responses in selenium supplemented sheep in northern New South Wales. 2. Liveweight gain, wool production and reproductive performance in young Merino ewes given selenium and copper supplements

1982 ◽  
Vol 22 (115) ◽  
pp. 24 ◽  
Author(s):  
JF Wilkins ◽  
RJ Kilgour ◽  
AC Gleeson ◽  
RJ Cox ◽  
SJ Geddes ◽  
...  
Keyword(s):  
Reproductive Performance ◽  
New South ◽  
New South Wales ◽  
Wool Production ◽  
Copper Treatment ◽  
Beneficial Effects ◽  
South Wales ◽  
Selenium Treatment

Young Merino ewes on five commercial properties in northern New South Wales were supplemented with selenium and their production was compared with untreated flock mates. They were studied from weaning till first lambing at about two years of age. Treatments of 5 mg selenium were given orally every six weeks for approximately 12 months. Copper treatments were also included to test for a possible concurrent deficiency or interaction with selenium. There were significant responses to selenium in liveweight in four of the five flocks and in wool production in two of the flocks at both shearings. Reproductive performance at first mating was also significantly better in two flocks. There were no beneficial effects of copper treatment nor were there any significant interactions with selenium treatment in any aspect of production measured.

scholarly journals A survey of the meat goat industry in Queensland and New South Wales. 2. Herd management, reproductive performance and animal health

2016 ◽  
Vol 56 (9) ◽  
pp. 1533 ◽  
Author(s):  
D. M. Nogueira ◽  
B. Gummow ◽  
C. P. Gardiner ◽  
J. Cavalieri ◽  
L. A. Fitzpatrick ◽  
...  
Keyword(s):  
Reproductive Performance ◽  
New South ◽  
Animal Health ◽  
New South Wales ◽  
Poor Performance ◽  
Gastrointestinal Parasites ◽  
Herd Management ◽  
High Rainfall ◽  
South Wales ◽  
Boer Goats

An interview-based questionnaire survey was conducted on 31 goat properties in New South Wales and Queensland in 2013. This study has gathered information on goat herd management, reproductive performance and animal health, and has identified constraints that may limit goat productivity. Producers from high-rainfall regions reported having full blood Boer goats for stud breeding. In contrast, producers from pastoral regions had rangeland goats and Boer-cross goats. Overall, 87% of the producers identified a natural breeding season in goats and 61% separated kids from their mothers at weaning. The weaning age varied between 3.0 and 6.0 months. A total of 52% of producers castrated male kids. Only 10% of producers used ultrasound to conduct pregnancy diagnosis on their goats. The reported pregnancy rate was 60% for the pastoral regions and 94% for the high-rainfall regions. The average prolificacy was 1.4 kids/doe and the kidding interval was 12 months. Overall, 68% of producers fed their goat herd with supplements, with the exception that most producers from western New South Wales and south-western Queensland did not use supplements. Producers considered gastrointestinal parasites (61%) and body lice (48%) as the main diseases associated with their goat herds, although only 52% mentioned drenching the animals with anthelmintics. In general, properties in the pastoral regions showed low pregnancy and kidding rates, early age at first mating, high mortality rates, poor performance of Boer bucks and lower weights and weight gain compared with properties in the high-rainfall regions. The survey has highlighted areas that require further study to validate the observations of producers, for instance, factors that may be limiting the fertility of Boer goats in rangeland environments, the incidence of diseases, the use of Kidplan and management activities to improve goat productivity.

Seasonal variation in reproductive performance of Merino ewes in northern New South Wales

1962 ◽  
Vol 2 (4) ◽  
pp. 69 ◽  
Author(s):  
JF Barrett ◽  
TF Reardon ◽  
LJ Lambourne
Keyword(s):  
Seasonal Variation ◽  
Birth Weight ◽  
Reproductive Performance ◽  
New South ◽  
New South Wales ◽  
Early Summer ◽  
The Other ◽  
South Wales ◽  
Group A

Two groups of Merino ewes were observed for five years to determine the variation within years and to make comparisons between years in the numbers of ewes exhibiting oestrus, in fertility, and in lamb birth weights. A group of 35 ewes (continuous), was run constantly with vasectomized rams and services were recorded. From the other (changing) group, a fresh sub-group of 15 ewes was joined with fertile rams every four to six weeks; services were recorded, together with lambing performance and lamb birth weights.Distinct breeding and anoestrous seasons similar to those shown by other workers were observed in both groups of ewes. However, the onset of oestrous activity was a month earlier in the changing ewes than in the continuous ewes.Fertility was low during spring and early summer and reached a maximum in autumn.The birth weight of the lambs appeared to be predominantly influenced by the ewes' nutrition during pregnancy.

Habitat Requirements of the Brush-Tailed Rock-Wallaby, Petrogale penicillata, in New South Wales

1982 ◽  
Vol 9 (2) ◽  
pp. 239 ◽  
Author(s):  
J Short
Keyword(s):  
New South ◽  
New South Wales ◽  
Habitat Requirements ◽  
South Wales ◽  
The Face ◽  
Rocky Habitat ◽  
Habitat Variables

The habitat requirements of the brush-tailed rock-wallaby were assessed by comparing areas of rocky habitat occupied by this species with adjacent unoccupied areas of similar habitat. Sites occupied by wallabies had twice the number of ledges, three times the number of caves, and a greater number of routes from the cliff top onto the face, usually via steep, narrow cracks or chimneys. They invariably faced so that the cliff received sun for much of the day (a northerly aspect). Rock-wallaby sites averaged twice the number of ledges sheltered by overhangs as did unoccupied sites. Ledges were shorter on occupied sites, probably reflecting more restricted accessibility to predators. An equation is presented which predicts with 90% success from five habitat variables whether a given cliff is suitable for brush-tailed rockwallabies.

Supplementing Merino ewes at mating for reproductive gain in central western New South Wales

1983 ◽  
Vol 23 (122) ◽  
pp. 259
Author(s):  
GD Denney
Keyword(s):  
Reproductive Performance ◽  
New South ◽  
New South Wales ◽  
Ovulation Rate ◽  
Feeding Period ◽  
Barrel Medic ◽  
South Wales ◽  
Native Pasture ◽  
Ad Libitum

In four experiments at Condobolin on the Central Western slopes of New South Wales between 1976 and 1979, mature Merino ewes were given supplements for four to five weeks over mating and the effects on their reproductive performance were recorded. The ewes were run on barrel medic or native pasture with mating commencing in late February or early March each year. The supplements were: experiment 1 -1upins (0.25 kg/d), oats (0.25 kg/d); experiment 2-lupins (0.25 kg/d), oats (0.25 kg/d); experiment 3-lupins (0 25 kg/d), lupins (ad libitum), lupins (0.25 kg/d) with ad libitum oats and lucerne hay; experiment 4-lupins (0.25 kg/d). In experiment 4, ewe liveweight was manipulated in the pre-feeding period to obtain two liveweight classes at the start of supplementation. In the three to four weeks before mating, ewes either maintained or lost weight in experiments 1,2 and 4. However, in experiment 3, ewe liveweight increased after heavy summer rains caused an abundance of pasture. The only significant effect of any supplement on flock reproduction was to increase the ovulation rate. This resulted from lupin supplementation but only in two of four years (experiments 1 and 4). However, on these occasions, lambing rates did not significantly increase due to three factors: more barren ewes, higher ova loss or greater peri-natal lamb loss. Oats supplementation in experiments 1 and 2 did not significantly increase reproductive performance, nor was there an effect of any supplement in experiment 3. The results indicate that repeatable reproductive responses to lupin supplementation are unlikely to occur in the area of the study.

Sign in / Sign up

Export Citation Format

Share Document