Assessment of reproductive wastage in sheep. 3. An investigation of a commercial sheep flock

1976 ◽  
Vol 16 (80) ◽  
pp. 344 ◽  
Author(s):  
BJ Restall ◽  
J Wilkins ◽  
R Kilgour ◽  
RN Tyrrell ◽  
H Hearnshaw
Keyword(s):  
New South ◽  
New South Wales ◽  
Fertilization Rate ◽  
Embryonic Mortality ◽  
Ovulation Rate ◽  
Fertilization Failure ◽  
Sheep Flock ◽  
South Wales ◽  
Early Embryonic Mortality ◽  
Made In

Infertility in a sheep flock in the Moree district of New South Wales was investigated during 1973. Detailed observations were made in two sub flocks and data were obtained in both maiden and adult ewes for proportion of ewes mating, ovulation rate, fertilization rate, and number of foetuses at 60 days of pregnancy. These estimates were used to apportion prenatal wastage to mating failure, fertilization failure or early embryonic mortality. Ovulation rate in the flock was high (1.27 maiden ewes, 1.73 adult ewes) and fertility low with 83 per cent of maiden ewes and 27 per cent of adult ewes not pregnant when examined by laparotomy 60 days after mating. In the adult ewes this infertility was accounted for by failure to mate (30 per cent of dry ewes) and early embryonic mortality (70 per cent of dry ewes). In the maiden ewes, failure to mate accounted for 34 per cent, embryonic mortality 52 per cent and failure of fertilization 14 per cent of the dry ewes. The problems of estimation and interpretation involved in this type of investigation are discussed.

Chemistry of the Cudgegong River, New South Wales

1979 ◽  
Vol 30 (3) ◽  
pp. 325 ◽  
Author(s):  
GL Muir ◽  
WD Johnson
Keyword(s):  
Major Ions ◽  
New South ◽  
New South Wales ◽  
Mineral Weathering ◽  
Chemical Characteristics ◽  
South Wales ◽  
Made In

Studies of the chemical characteristics of the Cudgegong River, N.S.W., were made in December 1974, November and December 1975 and January and June 1976. The concentrations of the major ions showed correlation with the geology of the catchment and the river's discharge. The order of dominance for ions in most of the river was found to be Mg2+ > Na+ > Ca2+ and HCO3- > Cl- > SO42-, but in the uppermost reaches of the river the order was Na+ > Mg2+ > Ca2+ and Cl- > HCO3- > SO42-. The origin and variation of ions, mineral weathering and ion-ion associations are discussed.

An economic study of the Western Division of N.S.W.

1985 ◽  
Vol 7 (1) ◽  
pp. 32
Author(s):  
L Davies
Keyword(s):  
Financial Performance ◽  
New South ◽  
New South Wales ◽  
Face To Face ◽  
South Wales ◽  
Parliamentary Committee ◽  
Economic Survey ◽  
Western Division ◽  
Agricultural Areas ◽  
Made In

The Hassall Report was based on an economic survey of 150 landholders throughout the Western Division of New South Wales for the financial years 197711978, 197811979 and 1979/1980. The survey used taxation records, however. some attitudinal informa- tion was collected from face to face interviews with landholders. The survey examined the financial performance in relation to the carrying capacity of the property and in relation to five land- scape categories. The survey found that the financial performance of the landscape categorized as "tall dense woodlands with scrub" was significantly poorer than for other landscape categories. The report has been used as a major reference for the recently completed Joint Parliamentary Committee Enquiry into the Western Division of New South Wales and has influenced a number of the economic recommendations in this report. This paper gives a brief summary of the financial results, a comparison of these results to those of other agricultural areas and the major policy recom- mendations made in the report.

scholarly journals VIII. A catalogue of nebulæ and clusters of stars in the southern hemisphere, observed at Paramatta in New South Wales, by James Dunlop, Esq. In a letter addressed to Sir Thomas Makdougall Brisbane, Bart. K. C. B. late Governor of New South Wales. Presented to the Royal Society by John Frederick William Herschel, Esq. Vice President

1828 ◽  
Vol 118 ◽  
pp. 113-151 ◽  
Keyword(s):  
Southern Hemisphere ◽  
New South ◽  
New South Wales ◽  
Vice President ◽  
General Survey ◽  
South Wales ◽  
The Right ◽  
William Herschel ◽  
Right Ascension ◽  
Made In

The following nebulæ and clusters of stars in the southern hemisphere were observed by me at my house in Paramatta, situated about 6″ of a degree south and about I 8 .78 of time east of the Brisbane Observatory. The observations were made in the open air, with an excellent 9-feet reflecting telescope, the clear aperture of the large mirror being nine inches. This telescope was occasionally fitted up as a meridian telescope, with a strong iron axis firmly attached to the lower side of the tube nearly opposite the cell of the large mirror, and the ends of the axis rested in brass Y’s, which were screwed to blocks of wood let into the ground about 18 inches, and projecting about 4 inches above the ground; one end of the axis carried a brass semicircle divided into half degrees and read off by a vernier to minutes. The position and index error of the instrument were ascertained by the passage of known stars. The eye end of the telescope was raised or lowered by a cord over a pulley attached to a strong wooden post let into the ground about two feet: with this apparatus I have observed a sweep of eight or ten degrees in breadth with very little deviation of the instrument from the plane of the meridian, and the tremor was very little even with a considerable magnifying power. I made drawings or representations of a great number of the nebulæ and clusters at the time of observation, several of which are annexed to this paper; and also very correct drawings of the Nebulæ major and minor, together with a representation of the milky nebulosity surrounding the star η Robur Caroli. The places of the small stars in the Nebulæ major and minor, and also those accompanying the η Robur Caroli, I ascertained by the mural circle in the year 1825, at which time I was preparing to commence a general survey of the southern hemisphere. These stars being laid down upon the chart, enabled me to delineate the nebulosity very accurately. The nebulæ are arranged in the order of their south polar distances to the nearest minute for 1827, and in zones for each degree in the order of their right ascension. The column on the right hand shows the number of times the object has been observed.

The mongoose in Australia: failed introduction of a biological control agent

2010 ◽  
Vol 58 (4) ◽  
pp. 205 ◽  
Author(s):  
David Peacock ◽  
Ian Abbott
Keyword(s):  
Propagule Pressure ◽  
Biological Control Agent ◽  
New South ◽  
New South Wales ◽  
South Australia ◽  
Control Agent ◽  
European Rabbit ◽  
South Wales ◽  
Semiarid Areas ◽  
Made In

We reviewed historical literature and obtained nearly 200 records of the mongoose in Australia up to 1942. Although the earliest importations (from 1855) were for its snake-killing prowess, often as entertainment, its perceived potential as a control agent for the European rabbit (Oryctolagus cuniculus) plague saw concerted introductions made in New South Wales, Victoria and South Australia, primarily in 1883 and 1884. At least 1000 mongoose were released to control rabbits at 14 reported release locations in these states. As many as 700 of these mongoose were reported released in one New South Wales rabbit-control trial. These numbers indicate that insufficient propagule pressure does not explain why Australia escaped the additional devastation of an established mongoose population. The only reason stated for the failure of the mongoose releases to control rabbits is destruction of the mongoose by rabbit trappers, both inadvertently and in seeking to protect their employment. Unfavourable climate was implicated by CLIMATCH modelling in the failure of all releases, especially those into semiarid areas such as western New South Wales. No contemporary detail could be located of the reported 1884 failed introduction of ‘numbers’ of mongoose into North Queensland to control rats in sugarcane plantations.

Seasonal variation in the fertility and fecundity of Bungaree and Peppin Merinos in central-western New South Wales

1969 ◽  
Vol 9 (37) ◽  
pp. 151 ◽  
Author(s):  
JR Giles ◽  
JP Drinan
Keyword(s):  
Seasonal Variation ◽  
Agricultural Research ◽  
New South ◽  
New South Wales ◽  
Ovulation Rate ◽  
Research Station ◽  
Agricultural Research Station ◽  
South Wales

The seasonal variation in fertility and fecundity of Bungaree and Peppin Merinos was compared at the Agricultural Research Station, Trangie, New South Wales. Ewes of both strains were joined to rams of both strains for 32 days on nine occasions ; each joining being separated from adjacent periods by an interval of 10 days. For six weeks after joining the ewes were run with vasectomized rams and were then slaughtered over the following six weeks. Incidence of oestrus and ovulation rate of the two strains were similar at all times. More Bungaree than Peppin ewes returned to service, particularly during the autumn, irrespective of the strain of rams to which they were joined. There was no difference between ram strains in percentage of ewes returning to service or percentage of ewes pregnant, but a significantly higher proportion of ova were lost in pregnant ewes with multiple ovulations after joining to Bungaree rams in winter and spring.

Chemistry of the Castlereagh River, New South Wales

1977 ◽  
Vol 28 (6) ◽  
pp. 683 ◽  
Author(s):  
WD Johnson ◽  
GL Muir
Keyword(s):  
Catchment Area ◽  
Major Ions ◽  
New South ◽  
New South Wales ◽  
Chemical Species ◽  
Chemical Characteristics ◽  
South Wales ◽  
Main River ◽  
Made In

Preliminary studies of the chemical characteristics of the Castlereagh River were made in 1973. The concentrations of the major ions vary considerably with distance from the head of the river and this variation shows a marked correlation with the geology of the catchment area. The order of dominance for ions within the system was found to be Na+ > Ca2+ > Mg2+ > K+ and HCO3- > Cl- > SO42- for the main river, and creeks in the eastern catchment gave Mg2+ > Ca2+ > Na+ > K+ and Cl- > HCO3- > SO42-. The relative amounts of the dominant chemical species are discussed and suggestions are made for the possible origins of specific components.

Representations of Surrogacy in Submissions to a Parliamentary Inquiry in New South Wales

2012 ◽  
Vol 16 (1) ◽  
pp. 71-84 ◽  
Author(s):  
Damien W Riggs ◽  
Clemence Due ◽  
Keyword(s):  
Family Formation ◽  
New South ◽  
New South Wales ◽  
South Wales ◽  
Made In

Whilst feminist commentators have long critiqued surrogacy as a practice of commodification, surrogacy as a mode of family formation continues to grow in popularity. In this paper we explore public representations of surrogacy through a discourse analytic reading of submissions made in Australia to an Inquiry regarding surrogacy legislation. The findings suggest that many submissions relied upon normative understandings of surrogates as either ‘good women’ or ‘bad mothers’. This is of concern given that such public representations may shape the views of those who utilize surrogacy services in ways that limit attention to the ethics of surrogacy.

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.

Searching for Franklin from Australia: William Parker Snow's initiative of 1853

Polar Record ◽  
1997 ◽  
Vol 33 (185) ◽  
pp. 145-150 ◽  
Author(s):  
William Barr
Keyword(s):  
New South ◽  
New South Wales ◽  
Canadian Arctic ◽  
Gold Rush ◽  
Storm Damage ◽  
South Wales ◽  
Made In

AbstractIn 1853 William Parker Snow (who had earlier participated in an expedition to search for the missing Franklin expedition in what is now the Canadian Arctic) decided to sink the money he had made in Melbourne during the Australian gold rush into a private expedition to search for Franklin, starting from Melbourne. In the southern autumn of 1853, he bought a 16-ton cutter, The Thomas, and, despite the handicaps of exorbitant prices and shortage of labour, fitted the vessel out for an Arctic expedition during the continuing frenzy of the gold rush. After calling at Sydney, The Thomas started north but encountered a series of violent winter gales that damaged her severely and forced Snow to seek shelter in the mouth of the Clarence River in northeastern New South Wales. By the time the storm damage had been repaired, all but two of Snow's men had deserted. Still in hopes of trying again, Snow sailed his cutter back south to Sydney and there finally abandoned this, one of the more bizarre episodes of the Franklin search.

Emergence and early seedling growth of Phalaris tuberosa

1969 ◽  
Vol 9 (39) ◽  
pp. 422 ◽  
Author(s):  
A Lazenby ◽  
JMA Schiller
Keyword(s):  
Seedling Growth ◽  
New South ◽  
Seedling Emergence ◽  
New South Wales ◽  
Hydrogen Phosphate ◽  
Early Seedling Growth ◽  
South Wales ◽  
Early Seedling ◽  
Red Earth ◽  
Made In

A study was made in seed boxes at Armidale, New South Wales, on a red earth soil, of the effects of two soil tilths (particles<0.3 cm and between 0.6 and 1.25 cm), three seeding depths (surface seeding, 1.25 cm and 2.5 cm), and three levels of applied phosphorus (the equivalents of phosphorus in nil, 378 kg/ha and 756 kg/ha superphosphate, applied as sodium di-hydrogen phosphate) on emergence and early seedling growth of Phalaris tuberosa. Water was made non-limiting as far as practicable. Seedling counts were made every four days until the first harvest, 32 days after sowing. Four fortnightly destructive harvests were made to examine treatment effects on post-emergence seedling growth. Seeding into the fine tilth at a depth of 1.25 cm on the high phosphorus treatment gave the fastest and highest total seedling emergence. Conditions most favourable to immediate post-emergence seedling growth were sowing into a fine seedbed at a depth of 1.25 cm or 2.5 cm in combination with phosphorus ; the rate of seedling growth increased with rate of phosphorus applied.

Sign in / Sign up

Export Citation Format

Share Document