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Articles 151 - 180 of 253

Full-Text Articles in Veterinary Medicine

Determination Of Seropositivity For Toxoplasma Gondiiinfection In Pregnant And Aborted Sheep In Elazig And Vicinity By Sabin-Feldman (Sf) Test, Müni̇r Aktaş, Nazi̇r Dumanli, Cahi̇t Babür, K. Zafer Karaer, Hasan Öngör Jan 2000

Determination Of Seropositivity For Toxoplasma Gondiiinfection In Pregnant And Aborted Sheep In Elazig And Vicinity By Sabin-Feldman (Sf) Test, Müni̇r Aktaş, Nazi̇r Dumanli, Cahi̇t Babür, K. Zafer Karaer, Hasan Öngör

Turkish Journal of Veterinary & Animal Sciences

This study was conducted in pregnant and aborted sheep to determine Toxoplasma gondiiantibodies. Blood samples were collected from a total of 154 sheep from 22 different herds during the period December 1996-January 1997 in Elazig and vicinity. Of these 154 sheep, 56 were pregnant, 57 aborted in the previous year and the remaining 41 sheep aborted within the period of the study. Sera obtained properly from these blood samples were examined by Sabine-Feldman (SF) test. Seropositivity for Toxoplasma gondiiinfection was determined in 72 (46.8%) of the 154 sheep at the titers ranging from 1/16 to 1/1024. The seropositivity rates of …


Enterotoxaemia Incidence In Small Ruminants In Elazığ And The Surrounding Provinces In 1994-1998, Canan Özcan, Meti̇n Gürçay Jan 2000

Enterotoxaemia Incidence In Small Ruminants In Elazığ And The Surrounding Provinces In 1994-1998, Canan Özcan, Meti̇n Gürçay

Turkish Journal of Veterinary & Animal Sciences

132 intestine specimens belonging to small ruminants with suspected enterotoxaemia were sent to the Elazig Veterinary Control and Research Institute from Elazığ and the surrounding provinces in 1994-1998. In bacteriological examinations, it was found that 51 of the 132 specimens were positive and 81 negative. The toxin-neutralisation test was applied for diagnosis. The 51 enterotoxaemia cases were identified as 28 C.welchii Type D, 16 C.welchii Type C, 7 C.welchii Type A.


The Effects Of Plasma Vitamin C And Ceruloplasmin Levels And Exogen Vitamin C Supplementation On Reproduction In Sheep, Seyfullah Hali̇loğlu, Behi̇ç Serpek Jan 2000

The Effects Of Plasma Vitamin C And Ceruloplasmin Levels And Exogen Vitamin C Supplementation On Reproduction In Sheep, Seyfullah Hali̇loğlu, Behi̇ç Serpek

Turkish Journal of Veterinary & Animal Sciences

The effects of vitamin C on progesterone and oestradiol 17b synthesis, and fertility rate were studied in Merino sheep. A total of 60 sheep, aged between 2 and 7 years, of which 30 had low, and the other 30 had high plasma vitamin C levels were used. Each low and high vitamin C group was divided into 2 subgroups. Each subgroup had equal numbers of sheep. Subgroups 2 and 4 served as controls in the low and high vitamin C groups, respectively. 500 mg of vitamin C was injected intramuscularly into the subgroups 1 and 3 in the low and …


Comparative Studies On The Production Performances Of Chios And Imroz Sheep Kept Under Semi-Intensive Condition Iii. The Effects Of Some Environmental Factors On Production Characteristics, Şebnem Gündal Çörekçi̇, Mehmet Evri̇m Jan 2000

Comparative Studies On The Production Performances Of Chios And Imroz Sheep Kept Under Semi-Intensive Condition Iii. The Effects Of Some Environmental Factors On Production Characteristics, Şebnem Gündal Çörekçi̇, Mehmet Evri̇m

Turkish Journal of Veterinary & Animal Sciences

This paper reports the third part of a study carried out to reveal the comparative production performances and effects of some environmental factors on the production characteristics of Chios and Imroz ewes kept in a single flock under semi-intensive conditions. In this report, the effects of some environmental factors on production characteristics are considered. The effects of genotype, sex (except in the case of fleece qualities) type of parturition, the age of the mother and years of birth on the fleece yields and body weights of lambs at different periods and first-shearing (6 months of age) fleece yields were investigated. …


Comparative Studies On The Production Performances Of Chios And Imroz Breeds Kept Under Semi-Intensive Conditionus Ii. Milk Production, Fleece Yields And Characteristics, Şebnem Gündal Çörekçi̇, Mehmet Evri̇m Jan 2000

Comparative Studies On The Production Performances Of Chios And Imroz Breeds Kept Under Semi-Intensive Conditionus Ii. Milk Production, Fleece Yields And Characteristics, Şebnem Gündal Çörekçi̇, Mehmet Evri̇m

Turkish Journal of Veterinary & Animal Sciences

This paper is the second part of a study carried out to reveal the comparative production performances and effect of some environmental factors on the production characteristics of Chios and Imroz ewes kept in a single flock under semi-intensive conditions. In this part of the study milk yields, lactation lengths and fleece weights and characteristics were considered. Mean lactation lengths and milk yield of Chios ewes were 203 days and 73.92 kg respectively; the comparative values for Imroz ewes were 223 days and 102.04 kg respectively. At the first shearing (6 months of age), average fleece weights of Chios and …


Efficacy Of Moxidectin Against Gastrointestinal Nematodesin Naturally Infected Lambs And Calves, Erkut Tüzer, Müfi̇t Toparlak, Kazim Göksu Jan 1999

Efficacy Of Moxidectin Against Gastrointestinal Nematodesin Naturally Infected Lambs And Calves, Erkut Tüzer, Müfi̇t Toparlak, Kazim Göksu

Turkish Journal of Veterinary & Animal Sciences

In this trial based on the reduction of the egg output and on the evaluation of results from larval/egg differentiation, moxidectin (Cydectin, 1% injectable moxidectin) administrated subcutaneously at a dose of 0.2 mg kgbw -1 was found effective on the gastrointestinal nematodes in naturally infected lambs (8 female and 7 male treatment; 8 female and 7 male control) harbored Haemonchus spp, Ostertagia spp, Trichostrongylus spp and Nematodirus spp and in naturally infected female calves (20 treatment and 10 control) harbored Haemonchus spp, Ostertagia spp, Trichostrongylus spp, Bunostomum sppand Cooperia spp.The efficacy was 100% on day +7, 99.9% on day +14 …


Prevalence Of Liver Fluke Infections In Slaughtered Animals In Trakya(Thrace), Turkey, Ayşen Gargili, Erkut Tüzer, Aynur Gülenber, Müfi̇t Toparlak, İlker Efi̇l, Vedat Keleş, Meltem Ulutaş Jan 1999

Prevalence Of Liver Fluke Infections In Slaughtered Animals In Trakya(Thrace), Turkey, Ayşen Gargili, Erkut Tüzer, Aynur Gülenber, Müfi̇t Toparlak, İlker Efi̇l, Vedat Keleş, Meltem Ulutaş

Turkish Journal of Veterinary & Animal Sciences

This study was carried out to determine the prevalence of liver fluke infections in cattle and sheep in Trakya (The European Part of Turkey). For this purpose the slaughterhouses of different localities (Tekirdağ, Hadimköy, Lüleburgaz, Çorlu, Kırklareli and Keşan) were visited between 03.03.1997 and 22.10.1997, and a total of 476 sheep and 415 cattle livers were examined. The prevalence rates of fasciolosis hepatica and dicrocoeliosis dendriticum were 3.99% and 23.55% in sheep, and 0.48% and 2.65% in cattle respectively. No changes in livers, which led to the partial or total condemnation, were observed.


Myiasis Cases And Their Treatments In Cows, Sheep And Goats In Elazığ Province, Cem Ecmel Şaki̇, Edi̇p Özer Jan 1999

Myiasis Cases And Their Treatments In Cows, Sheep And Goats In Elazığ Province, Cem Ecmel Şaki̇, Edi̇p Özer

Turkish Journal of Veterinary & Animal Sciences

This study was carried out on cows, sheep and goats in Salkaya Village, Kovancılar, Baskıl and Sivrice towns and in Elazığ during 1994 and 1995. Fifty two myiasis cases were detected throughout the study. Forty seven (90.38%) and 5 (9.62%) of the cases were determined in sheep and cows respectively, no myiasis case was encountered in goats. Twenty two (42.32%) of the cases were seen in June during 1994 and 1995, 10 (19.23%) in May, 9 (17.31%) in July, 8 (15.38%) in September and 3 (5.77%) in August. Identification of the collected larvae showed that 51 (98.08%) and 1 (1.92%) …


Comparison Of Some Production Traits In Malya And Akkaraman Sheep, Nadi̇ Çolakoğlu, Ceyhan Özbeyaz Jan 1999

Comparison Of Some Production Traits In Malya And Akkaraman Sheep, Nadi̇ Çolakoğlu, Ceyhan Özbeyaz

Turkish Journal of Veterinary & Animal Sciences

Summary : This research was carried out to compare the fertility traits, greasy fleece weight and wool characteristics in breeding ewes; and the growth and survival rates of lambs in Ankaraman and Malya breeds. The data was obtained for fertility traits from 5581 Malya and 9707 Akkaraman ewes, for growth rates from 100 lambs in each breed, for greasy fleece weights from 100 ewes in each breed and for wool characteristics from 32 Malya and 28 Akkaraman ewes. Fertility traits such as lambing percentage, twinning rate, litter size and number of lambs weaned per hundred ewes lambing between 1992 and …


The Effect Of Different Levels Of Nutrition At Last Period Of Gestation On Liveweight Of Ewes, Growth And Survival Rates Of Their Lambs, İsmai̇l Fi̇lya, Ali̇ Karabulut, Vedat Akgündüz Jan 1999

The Effect Of Different Levels Of Nutrition At Last Period Of Gestation On Liveweight Of Ewes, Growth And Survival Rates Of Their Lambs, İsmai̇l Fi̇lya, Ali̇ Karabulut, Vedat Akgündüz

Turkish Journal of Veterinary & Animal Sciences

The animal material of the research was 3, 4 and 5 years old 210 Merino ewes and their lambs. The research was started at the beginning of the last 1.5 months period of gestation and continued until the lambs were reached 60 days age. It has been determined that 500 g and more (especially 1500 g) concentrate feed given fed ewes daily at the last 1.5 months period of gestation increased the liveweight and decreased the weight loss of ewes and increased birth weight, growth and survival rates of lambs.


Bacteriologic, Serologic And Pathologic Studies On Abortus Cases Of Goats And Sheep In Elazığ And It's Vicinity, Adi̇le Muz, Harun Özer, Hati̇ce Eröksüz, Hasan Basri̇ Ertaş, Hasan Öngör, Hasan Basri̇ Gülcü, Murat Dabak, Orhan Başbuğ, Hakan Kalender Jan 1999

Bacteriologic, Serologic And Pathologic Studies On Abortus Cases Of Goats And Sheep In Elazığ And It's Vicinity, Adi̇le Muz, Harun Özer, Hati̇ce Eröksüz, Hasan Basri̇ Ertaş, Hasan Öngör, Hasan Basri̇ Gülcü, Murat Dabak, Orhan Başbuğ, Hakan Kalender

Turkish Journal of Veterinary & Animal Sciences

In this study, the etiology of ovine and caprine abortions was investigated bacteriologically, serologically and pathologically. Tissue samples collected from aborted sheep and goats in Elazığ and its borders were examined bacteriologically and pathologically for brucellosis, campylobacteriosis, salmonellosis and listeriosis. In addition, blood samples collected from aborted sheep and goats were examined by serological tests for the presence of antibodies to these bacteria. Of 110 aborted fetuses, in 22 (20%) Brucella melitensis, in 5 (4.5%) Campylobacter fetus subsp. fetus, in 4 (3.6%) Salmonella abortus ovis, in 1 (0.9%) Listeria monocytogenes and in 3 (2.7%) E. coli were isolated and identified. …


Effects Of Praziquantel And Albendazole On Coenurus Cerebralisinexperimentally Infected Lambs, Gülay Biyikoğlu, Ahmet Doğanay Jan 1998

Effects Of Praziquantel And Albendazole On Coenurus Cerebralisinexperimentally Infected Lambs, Gülay Biyikoğlu, Ahmet Doğanay

Turkish Journal of Veterinary & Animal Sciences

In this study, effects of praziquantel and albendazole on Coenurus cerabralis were investigated. For this purpose, 5 dogs aged 2.5-3 months and 21 akkaraman lambs aged 3-4 months were used. Three dogs were infected with Coenurus cerebralis protoscoleces, then the eggs collected from their feces were given to the lambs. Approximately 5500 eggs were given to each lamb. The lambs were divided into three groups consisting of 7 lambs each. The drug administration started at the first day of the occurrence of the semptoms of coenurosis. Praziquantel a dose of 25 mg/kg for 3 days and albendazole a dose of …


Effect Of Ivermectin (Baymec) On Natural Psoroptic And Sarcoptic Scab In Sheep, Edip Özer, Cem Ecmel Şaki̇, Murat Sevgi̇li̇ Jan 1998

Effect Of Ivermectin (Baymec) On Natural Psoroptic And Sarcoptic Scab In Sheep, Edip Özer, Cem Ecmel Şaki̇, Murat Sevgi̇li̇

Turkish Journal of Veterinary & Animal Sciences

This study was carried out in sheep with natural psoroptic scab in Kamışlı village of Kovancılar town in Elazığ province and in sheep with natural sarcoptic scab in Kovancılar town between April and May in 1996. According to the intensity of Psoroptes ovis and Sarcoptes ovis, two groups, control and treatment, each of which contained 15 sheep were formed in the flock with psoroptic scab whereas the flock with sarcoptic scab were divided into control and treatment groups containing 10 sheep each. Within the trial period, animals in the treatment group and the other animals in both flock received subcutaneous …


A Comparison Between Three Serological Tests Forbrucella Melitensis Infection In Sheep, Nizar Abuharfeil, Mahmoud N. Abo-Shehada Jan 1998

A Comparison Between Three Serological Tests Forbrucella Melitensis Infection In Sheep, Nizar Abuharfeil, Mahmoud N. Abo-Shehada

Turkish Journal of Veterinary & Animal Sciences

A comparative study of the Rose Bengal test (RBT), Enzyme-Linked Immunosorbent Assay (ELISA) and complement fixation test (CFT) was performed to analyze sera of two Awassi flocks. Flock A was composed of 215 ewes, naturally infected with brucellosis. None of the animals were vaccinated. Flock B consisted of 336 non-infected non-vaccinated ewes. These served as nega-tive controls. The two flocks were each divided into 4 groups, and samples were collected from one group every 6 months and subjected to bacteriologic and serologic testing. Samples from any aborted ewes were also collected immediately after abortion and 6 weeks later. During the …


A Deficiency In The Slow Moving Immunoglobulin In Awassi Sheep, N. Q. Hailat, S. Q. Lafi Jan 1998

A Deficiency In The Slow Moving Immunoglobulin In Awassi Sheep, N. Q. Hailat, S. Q. Lafi

Turkish Journal of Veterinary & Animal Sciences

A deficiency in the slow moving gamma globulin in an eight-month-old emaciated female Awassi sheep is described. Analysis of serum protein electrophoresis (SPE) on cellulose acetate of this sheep revealed the presence of three fractions only; albumin (alb), a and b compared with that of the normal sheep which showed four fractions (alb, a and b and g).This finding occurred in a ewe which belonged to a closed breeding system awassi flock. Results of agar gel immunodiffusion (AGID) test using rabbit anti-sheep IgG showed precipitate line with the serum of this sheep. Analysis of sera from her mother, the sister …


Studies On Possibility Of Producing High Quality Lambsby Crossbreeding Among Sakız, Kıvırcık Andgerman Black Headed Mutton Sheep, Ahmet Altinel, Mehmet Evri̇m, Mustafa Özcan, Hasan Başpinar, Fazıl Deli̇gözoğlu Jan 1998

Studies On Possibility Of Producing High Quality Lambsby Crossbreeding Among Sakız, Kıvırcık Andgerman Black Headed Mutton Sheep, Ahmet Altinel, Mehmet Evri̇m, Mustafa Özcan, Hasan Başpinar, Fazıl Deli̇gözoğlu

Turkish Journal of Veterinary & Animal Sciences

This study has been carried out to get more and rapid growing lambs fit for slaughter by crossbreeding Kivircik ewes with Sakiz rams so as to produce F 1 females with high fertility and high milk yield and crossbreeding these F 1 females with German Black Headed Mutton rams. Studies have been carried out at Bandırma Sheep Breeding Research Institute. On the first step of this study 5 Sakiz rams and 134 Kivircik ewes had been used. When F 1 females produced by Sakiz X KIvircik crossbreeding became mature, they had been crossbred with German Black Headed Mutton rams. The …


The Studies On The Experiments Of Preventive Treatment With Sodiumbicarbonate Supplementation To Feeds In Sheep In Which Cases Of Ruminal Acidosis, Gürbüz Gökçe, Hüseyin Y. İmren Jan 1998

The Studies On The Experiments Of Preventive Treatment With Sodiumbicarbonate Supplementation To Feeds In Sheep In Which Cases Of Ruminal Acidosis, Gürbüz Gökçe, Hüseyin Y. İmren

Turkish Journal of Veterinary & Animal Sciences

This study was made to determine the degree of protection of sheep against ruminal acidosis after the addition of various concentrations of sodium bicarbonate (3%, 6%, 9%) to acidotic rations (crushed wheat). For this purpose four groups, each group consisting of three animals, were used. This grouping was established according to the rate of sodium bicarbonate (NaHCO 3 ) added to the crushed wheat. Crushed wheat-wheat strax mixture (Base ration, 90; 10, 40 gr/kg) was fed to animals once a day for up to 4 days. NaHCO 3 was added to base ration. Treatments were as follows: No treatment (control, …


Lupin Stubbles : Getting The Best With Weaner Sheep, Keith Croker, Colin Mcdonald, Jeremy Allen Jan 1994

Lupin Stubbles : Getting The Best With Weaner Sheep, Keith Croker, Colin Mcdonald, Jeremy Allen

Journal of the Department of Agriculture, Western Australia, Series 4

Sweet lupins are now grown on about a million hectares in Western Australia each year. If half of the State's seven million weaners were grazed as recommended on half of the lupin stubbles, it could generate about $15 million from reduced supplementary feeding, greater wool production and other advantages. But correct management is important, particularly knowing when to take weaners out. Research by the Department over the last five years is now indicating how this should be done.


Miscellaneous Publication No 33/93 - Virulent Footrot A Farmer's Guide To Eradication, Department Of Agriculture, Western Australia Jan 1994

Miscellaneous Publication No 33/93 - Virulent Footrot A Farmer's Guide To Eradication, Department Of Agriculture, Western Australia

Animal production and livestock published reports

The first thing to understand about virulent footrot is that it can occur on any farm in the medium to high rainfall zone. Persons who regularly buy and sell sheep have a greater risk, but even closed breeding flock properties are at risk from stray sheep.

People often associate footrot with properties managed by inefficient farmers. This is a false belief. Many good farmers have found the disease in their sheep, including high profile studs.

Footrot can strike anywhere and often without warning.

The important thing to remember is that once it is found, getting to know and understand the …


Do Farmers Really Want To Eradicate Sheep Lice?, Chris Hawkins Jan 1993

Do Farmers Really Want To Eradicate Sheep Lice?, Chris Hawkins

Journal of the Department of Agriculture, Western Australia, Series 4

With the termination of Western Australia's Sheep Lice Eradication Campaign in 1993 farmers' views about the eradication of sheep lice are of greater relevance now than in the past. Lice control now rests with individual farmers and continuing local lice cell groups .

A recent survey of producers in the Moora Shire provides some key insights into farmers' thoughts about sheep lice and their eradication.


Progress Toward Eradication Of Virulent Footrot, Bob Mitchell Jan 1993

Progress Toward Eradication Of Virulent Footrot, Bob Mitchell

Journal of the Department of Agriculture, Western Australia, Series 4

Western Australia is well placed to eradicate virulent footrot from the State's sheep and goat populations.

Between 1950 and 1993 the proportion of sheep flocks with footrot fell from about 15 per cent to less than 2 percent, and the 1990-92 outbreak has been turned around. One hundred and eighty properties (]. 7 per cent) of flocks, mostly in the high rainfall South-West, are in quarantine for footrot today.

This high level of footrot control is the result of strong support from the sheep industry and years of good cooperation between farmers and the Department of Agriculture.

Western Australia leads …


Choosing Shower Dips For Sheep Lice, Tony Higgs, Bob Love Jan 1993

Choosing Shower Dips For Sheep Lice, Tony Higgs, Bob Love

Journal of the Department of Agriculture, Western Australia, Series 4

The performance of all shower dip chemicals for sheep lice can vary depending on the active chemical and the conditions under which they are used.

Department of Agriculture trials have indicated that the wettable powders coumaphos and magnesium fluorosilicate were less effective at eradicating sheep lice than were synthetic pyrethroid and organophosphate dipping chemicals.

However, failure to eradicate sheep lice may be the result of several factors, many of them related to management.


New Technique Joins The Fight Against Footrot, Laurie Depiazzi, Mike Palmer, David Pitman Jan 1991

New Technique Joins The Fight Against Footrot, Laurie Depiazzi, Mike Palmer, David Pitman

Journal of the Department of Agriculture, Western Australia, Series 4

The diagnosis of footrot in sheep and goats is not an easy task. Two main techniques are used for diagnosis - inspection of diseased feet on a farm and laboratory testing of bacteria isolated from foot scrapings. The interpretation of the results obtained by these methods requires a good understanding of the various forms of footrot.

A new laboratory technique has halved the time taken to detect those strains of the bacterium, Bacteroides (Dichelobacter) nodosus, that cause each form of the disease.


Phomopsis-Resistant Lupin Stubbles As Feed For Weaner Sheep, Colin Mcdonald, Keith Croker, Jeremy Allen Jan 1991

Phomopsis-Resistant Lupin Stubbles As Feed For Weaner Sheep, Colin Mcdonald, Keith Croker, Jeremy Allen

Journal of the Department of Agriculture, Western Australia, Series 4

The breeding of sweet, narrow-leafed lupins with increased resistance to Phomopsis leptostromiformis, the fungus that causes lupinosis in sheep, is a breakthrough for the summer nutrition of weaner sheep. The new resistant varieties, Gungurru for the medium (325 to 450 mm) rainfall areas and Yorrel for low rainfall areas (less than 325 mm), were released by the Department of Agriculture in 1988.

This article discusses progress in a four-year project which is examining liveweight and wool production of weaners grazing Gungurru stubbles.


The Incidence Of Lupinosis In Sheep Grazing Phomopsis-Resistant Lupin Stubbles, Peter Morcombe, Jeremy Allen Jan 1990

The Incidence Of Lupinosis In Sheep Grazing Phomopsis-Resistant Lupin Stubbles, Peter Morcombe, Jeremy Allen

Journal of the Department of Agriculture, Western Australia, Series 4

Lupinosis is one of the major diseases of grazing livestock in Western Australia. It occurs when animals graze lupin stubble containing toxins produced by the fungus Phomopsis leptostromiformis. The Department of Agriculture has recently released new cultivars of Lupinus angustifolius which are more resistant to colonization by Phomopsis, and therefore develop less toxicity, than those previously available (Cowling et al. 1988). The new cultivars - Gungurru and Yorrel - are called Phomopsis-resistant, however their resistance is only moderate. The old cultivars are referred to as Phomopsis-susceptible.


The Live Sheep Export Industry, Richard Norris, Barry Richards, Tony Higgs Jan 1990

The Live Sheep Export Industry, Richard Norris, Barry Richards, Tony Higgs

Journal of the Department of Agriculture, Western Australia, Series 4

Australia's live sheep trade to Middle Eastern countries is an important export industry. However, about 2 per cent of the sheep die, mainly during the sea voyage. The Western Australian Department of Agriculture has conducted a major research programme to improve the health and welfare of sheep during live export. The programme has'examined many aspects of the export sheep industry, and a substantial part of it has focused on why sheep die during sea transport.


Choosing A Calcium Supplement For Sheep Fed Cereal Grains, R L. Peet, Michael Hare Jan 1989

Choosing A Calcium Supplement For Sheep Fed Cereal Grains, R L. Peet, Michael Hare

Journal of the Department of Agriculture, Western Australia, Series 4

Sheep fed cereal grains as an energy source over summer usually need added calcium because cereal grains are generally low in calcium (for example, 0.03 per cent calcium compared to 0.26 per cent phosphorus), and there may not be a natural source such as clover, weeds, leafy stubble or edible bush in the paddock.

The safestt and most effective calcium supplement is finely ground limestone added to the feed, but some farmers have used other sources of calcium such as gypsum and superphosphate in this manner.


Evaluation Of The Crack Approach For The Control Of Drench Resistance In Sheep Worms, J R. Edwards, Helen Chapman, Jon Dunsmore Jan 1989

Evaluation Of The Crack Approach For The Control Of Drench Resistance In Sheep Worms, J R. Edwards, Helen Chapman, Jon Dunsmore

Journal of the Department of Agriculture, Western Australia, Series 4

The Department of Agriculture launched the CRACK approach to worm control in September 1985 in response to finding that anthelmintic (drench) resistant worms were present on 68 per cent of a random selection of Western Australian sheep farms.

The high cost of internal parasites in terms of lost production and drench costs, together with the high prevalence of resistant worms of farms, confirmed that changes were needed to existing parasite control measures in sheep.l


Weighing Scales For Sheep Do Pay, W D. Roberts Jan 1989

Weighing Scales For Sheep Do Pay, W D. Roberts

Journal of the Department of Agriculture, Western Australia, Series 4

Sheep producers can improve production by using weighing scales and keeping accurate records of weights.

Withiut some objective measurement, such as weighing, producers have no accurate method of identifying the heaviest, lightest and average weight of a group of sheep.

They could try to esstimate weight by eye - but most people are poor judges of body weight.


Ovulation Rate Of Ewes : Role Of Energy And Protein, E Teleni, J. B. Rowe Jan 1986

Ovulation Rate Of Ewes : Role Of Energy And Protein, E Teleni, J. B. Rowe

Journal of the Department of Agriculture, Western Australia, Series 4

Western Australia's sheep farmers are familiar with the low ovulation rate of Merino ewes and how this limits the lambing performance of ewe flocks.

One way in which ovulation rate and therefore lambing percentage may be increased is to feed seed of sweet lupin (Lupinus augustifolius) to ewes at mating. However, Department of Agriculture research has found that these increases do not show up consistently, and that there is considerable variability between farms.

If improved nutrition is to be a useful way to increasing ovulation rate, the mechanism by which nutrition affects ovulation rate must first be understood. This article …