Adrenal function in Angora goats: a comparative study of adrenal steroidogenesis in Angora goats, Boer goats, and Merino sheep.

2000 ◽  
Vol 78 (4) ◽  
pp. 1036 ◽  
Author(s):  
Y Engelbrecht ◽  
P Swart
Keyword(s):  
Comparative Study ◽  
Adrenal Function ◽  
Merino Sheep ◽  
Adrenal Steroidogenesis ◽  
Angora Goats ◽  
Boer Goats

scholarly journals Parasites of domestic and wild animals in South Africa. XLVI. Oestrid fly larvae of sheep, goats, springbok and black wildebeest in the Eastern Cape Province

2005 ◽  
Vol 72 (4) ◽  
Author(s):  
I.G. Horak
Keyword(s):  
Eastern Cape Province ◽  
Eastern Cape ◽  
Merino Sheep ◽  
Inland Valley ◽  
Large Numbers ◽  
Black Wildebeest ◽  
Summer Temperatures ◽  
Dorper Sheep ◽  
Angora Goats ◽  
Boer Goats

Merino sheep in Thornveld, Dorper sheep and Angora goats in inland Valley Bushveld, Angora goats and Boer goats in Valley Bushveld on the coastal plateau, and springbok, Antidorcas marsupialis, and black wildebeest, Connochaetes gnou, in Karroid Mountainveld, all in the Eastern Cape Province, were examined for the larvae of nasal bot flies. The sheep and goats were infested with the larvae of Oestrus ovis, and Dorper sheep and Boer goats harboured more larvae than Angora goats on the same farms. Most infestation was present from November to May in Merino sheep in Thornveld, from February to June in Dorper sheep in inland Valley Bushveld, and from May to September in Angora and Boer goats in Valley Bushveld on the coastal plateau. These patterns of seasonality appeared to be regulated by the severity of the summer temperatures at the various localities. The springbok were infested with the larvae of Rhinoestrus antidorcitis, most of which seemed to mature from June to August. All larval sages of Oestrus variolosus and Gedoelstia hässleri were present in the black wildebeest, and large numbers of 1st instar larvae of G. hässleri appeared to accumulate on the dura of the wildebeest from June to August.

scholarly journals Comparative study of rumen activity in churra and merino sheep

1993 ◽  
Vol 1993 ◽  
pp. 174-174
Author(s):  
M.D. Carro ◽  
F.J. Giráldez ◽  
M.J. Ranilla ◽  
J.S. González ◽  
A.R. Mantecón
Keyword(s):  
Comparative Study ◽  
Live Weight ◽  
Experimental Period ◽  
Ammonia Nitrogen ◽  
Free Access ◽  
Merino Sheep ◽  
Sheep Breeds ◽  
Alfalfa Hay ◽  
N Concentration ◽  
Access To Water

Some recent studies (Frutos et al., 1992) comparing Spanish sheep breeds have indicate possible differences between breeds in the digestive diet utilization. The aim of this experiment was to compare the activity of microbies in the rumens of Churra and Merino sheep which were kept in the same environment and received the same diets. The pH and ammonia nitrogen (NH3-N) concentration in rumen liquor were also determined in all animals.The experiment was conducted with 5 mature Churra sheep (47.2 ± 2.74 kg live weight (LW)) and 5 mature Merino sheep (45.0 ± 0.91 kg LW), which had been fitted with a rumen cannula of 35 mm diameter 4 months before the start of the experiment. All animals were housed in individual pens and had free access to water and mineral blocks. The animals received alfalfa hay at maintenance level through the experimental period, which was distributed in two equal amounts at 10:00 and 18:00 h.

Influence of stocking rate and mixed grazing of Angora goats and Merino sheep on animal and pasture production in southern Australia. 1. Botanical composition, sward characteristics and availability of components of annual temperate pastures

2010 ◽  
Vol 50 (2) ◽  
pp. 138 ◽  
Author(s):  
B. A. McGregor
Keyword(s):  
Subterranean Clover ◽  
Botanical Composition ◽  
Stocking Rate ◽  
Bare Ground ◽  
Pasture Production ◽  
Weed Invasion ◽  
Merino Sheep ◽  
Grazed Pastures ◽  
Temperate Pastures ◽  
Angora Goats

The effects of animal species (AS; Angora goats, Merino sheep or goats and sheep mixed grazed together at ratio 1 : 1) and stocking rate (SR; 7.5, 10 and 12.5 animals/ha) on the availability, botanical composition and sward characteristics of annual temperate pastures under continuous grazing were determined in a replicated experiment from 1981 to 1984. AS and SR had significant effects on pasture availability and composition and many AS × SR interactions were detected. The pastures grazed by sheep had significantly reduced content and proportion of subterranean clover and more undesirable grasses compared with those grazed by goats. There were no differences in dry matter availabilities between goat- and sheep-grazed pastures at 7.5/ha, but at 10 and 12.5/ha goat pastures had significantly increased availabilities of green grass, dead and green clover and less weeds compared with sheep pastures. There was a significant AS × SR interaction for the density of seedlings in May following pasture germination. Between July and January, the height of pastures was greater under goats than sheep but from January to March pasture height declined more on goat-grazed than on sheep-grazed pastures. There was an AS × SR interaction for incidence of bare ground. Increasing the SR increased bare ground in pastures grazed by sheep but no change occurred on pastures grazed by goats. Changes in pasture characteristics due to increased SR were minimised on pastures grazed by goats but the grazing of sheep caused larger and faster changes and the pastures were damaged at the highest SR. Goats did not always select the same herbage material as sheep, changed their selection between seasons and were not less selective than sheep. Angora goats were flexible grazers and continually adapted their grazing behaviour to changing herbage conditions. Goat grazing led to an increase in subterranean clover, an accumulation of dead herbage at the base of the sward, reduced bare ground, taller pastures in spring and a more stable botanical composition. Mixed-grazed pasture characteristics were altered with SR. With careful management Angora goats on sheep farms may be used to manipulate pasture composition, to speed up establishment of subterranean clover, to decrease soil erosion and to reduce weed invasion.

Comparative study on meat composition and fatty acid profile of Non-Descript and their crosses with boer goats

2019 ◽  
Vol 25 (1) ◽  
pp. 85
Author(s):  
S. Das ◽  
G.P. Mohanty ◽  
S.K. Mishra ◽  
S.P. Sahoo ◽  
S.K. Dash ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Comparative Study ◽  
Fatty Acid Profile ◽  
Meat Composition ◽  
Boer Goats

scholarly journals Natural History of Adrenal Steroidogenesis in Autoimmune Addison’s Disease Following Diagnosis and Treatment

2020 ◽  
Vol 105 (7) ◽  
pp. 2322-2330
Author(s):  
Catherine Napier ◽  
Kathleen Allinson ◽  
Earn H Gan ◽  
Anna L Mitchell ◽  
Lorna C Gilligan ◽  
...  
Keyword(s):  
Natural History ◽  
Serum Cortisol ◽  
Adrenal Function ◽  
Peak Serum ◽  
Prolonged Treatment ◽  
Rapid Decline ◽  
Newly Diagnosed ◽  
Addison Disease ◽  
Adrenal Steroidogenesis ◽  
History Of

Abstract Context The natural history of adrenal function in autoimmune Addison disease once diagnosed and treated has not been systematically studied, but several case reports of recovery from established adrenal failure suggest it may not be uniform. Objective To ascertain steroidogenic function in autoimmune Addison disease immediately following diagnosis and during prolonged treatment. Design We studied peak serum cortisol in response to ACTH1-24 in 20 newly diagnosed autoimmune Addison disease patients at first presentation and then again within a month. We also studied 37 patients with established Addison disease (for between 7 months and 44 years) in a medication-free state, measuring peak serum cortisol responses to ACTH1-24 and the urine LC-MS steroid metabolome. Results Adrenal steroidogenesis declined rapidly after steroid replacement treatment for newly diagnosed Addison disease was started, with a peak serum cortisol falling from 138 ± 19 nmol/L (SEM) at presentation to 63 ± 13 nmol/L over 4 weeks (P < 0.003). Six of 37 participants (16%) with established Addison disease had detectable serum cortisol and urine glucocorticoid and mineralocorticoid metabolites during repeat testing, indicating variable degrees of residual adrenal function. Conclusion Autoimmune Addison disease is a heterogeneous condition, showing a rapid decline in adrenal steroidogenesis during the first few weeks following diagnosis, but low-level residual function in a minority of patients, which appears to persist for many years.

Intake, digestion, and nitrogen and sulfur retention in Angora goats and Merino sheep fed herbage diets

1984 ◽  
Vol 24 (125) ◽  
pp. 165 ◽  
Author(s):  
PT Doyle ◽  
JK Egan ◽  
AJ Thalen
Keyword(s):  
Organic Matter ◽  
Plant Cell Wall ◽  
Nitrogen Retention ◽  
Late Summer ◽  
Poor Quality ◽  
Merino Sheep ◽  
Limiting Nutrients ◽  
Digestible Organic Matter ◽  
Medium Quality ◽  
Angora Goats

The voluntary intake and digestion of three pasture hays of varying quality by Angora goats was compared with that by Merino sheep. The excretion and retention of nitrogen and sulfur were also measured. When a high quality hay was given, there were no differences between goats and sheep in the intake of organic matter (68 vs 61 g/kg0.75.d) or in organic matter digestibility (digestible organic matter intake) (72 vs 7 1 %). However, the goats appeared to utilize nitrogen less efficiently than the sheep as evidenced by nitrogen retention (673 vs 794 mg/100 g digestible organic matter intake.d), and there was a tendency for sheep to use absorbed energy more efficiently for body tissue synthesis. The apparent digestion of organic matter (65 vs 57%), plant cell wall constituents (67 vs 59%), nitrogen (29 vs 19%) and sulfur (40 vs 33%) in a medium quality hay low in nitrogen was greater in goats than in sheep. There were no differences in intake, but the goats were more efficient at conserving nitrogen (nitrogen retention -87 vs -200 mg/ 100 g digestible organic matter intake.d). Similar trends occurred when a poor quality hay with a higher nitrogen content was given. Goats have apparent advantages over sheep in their ability to digest fibrous feeds and conserve limiting nutrients from such feeds. Consequently, they may require less supplementary feeding than sheep in temperate areas during late summer and autumn when animals graze mature pastures.

Experimental use of the attenuated Ehrlichia ruminantium (Welgevonden) vaccine in Merino sheep and Angora goats

Vaccine ◽  
2008 ◽  
Vol 26 ◽  
pp. G34-G39 ◽  
Author(s):  
Erich Zweygarth ◽  
Antoinette I. Josemans ◽  
Helena C. Steyn
Keyword(s):  
Ehrlichia Ruminantium ◽  
Merino Sheep ◽  
Angora Goats ◽  
Experimental Use
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