ROCKY MOUNTAIN BIGHORN SHEEP (OVIS CANADENSIS CANADENSIS) MILK: I. GROSS COMPOSITION AND FAT CONSTITUTION

1965 ◽  
Vol 43 (5) ◽  
pp. 885-888 ◽  
Author(s):  
E. C. H. Chen ◽  
D. A. Blood ◽  
B. E. Baker
Keyword(s):  
Fatty Acids ◽  
Milk Fat ◽  
Post Partum ◽  
Rocky Mountain ◽  
Bighorn Sheep ◽  
Ovis Canadensis ◽  
Domestic Sheep ◽  
Milk Samples ◽  
Sheep Milk ◽  
Park Area

Milk was obtained from five Rocky Mountain bighorn sheep living in the Jasper Park area of Alberta. The milk was collected at [Formula: see text] and 3 months post partum. The gross composition and milk fat fatty acids of the milk samples and of a sample of domestic sheep milk (Suffolk, 1 month post partum) were determined.

Cardiac frequency: a potential predictor of blood cortisol levels during acute and chronic stress exposure in Rocky Mountain bighorn sheep (Ovis canadensis canadensis)

1987 ◽  
Vol 65 (8) ◽  
pp. 2028-2034 ◽  
Author(s):  
Henry J. Harlow ◽  
E. Tom Thorne ◽  
Elizabeth S. Williams ◽  
E. Lee Belden ◽  
William A. Gern
Keyword(s):  
Chronic Stress ◽  
Remote Monitoring ◽  
Acute Stress ◽  
Rocky Mountain ◽  
Bighorn Sheep ◽  
Ovis Canadensis ◽  
Domestic Sheep ◽  
Cardiac Frequency ◽  
Acute And Chronic Stress ◽  
In Captivity

It was the purpose of this study to investigate methods of assessing responses to stress by free-ranging bighorn sheep (Ovis canadensis canadensis). The adrenal response test on wild-caught bighorn sheep maintained in captivity did not demonstrate either adrenal exhaustion or hypersensitivity during chronic stress. To study physiological responses to acute stress, hand-reared bighorn sheep were habituated to living in stalls and fitted with electrocardiogram leads and jugular cannulas for remote monitoring of cardiac frequency and blood cortisol changes. A radioimmunoassay was validated on bighorn sheep plasma which was a modification of the procedure used for domestic sheep. A linear relationship between heart rate and blood cortisol was obtained for individual animals suggesting that remote monitoring of cardiac frequency can be used as a predictor of adrenal function and, therefore, the potential immunologic condition of an animal during stress.

Glutathione peroxidase activity and selenium levels in Rocky Mountain bighorn sheep and mountain goats

1989 ◽  
Vol 67 (10) ◽  
pp. 2493-2496 ◽  
Author(s):  
Judith Samson ◽  
Jon T. Jorgenson ◽  
W. D. Wishart
Keyword(s):  
Glutathione Peroxidase ◽  
Clinical Signs ◽  
Rocky Mountain ◽  
Selenium Deficiency ◽  
Bighorn Sheep ◽  
Ovis Canadensis ◽  
Domestic Sheep ◽  
Oreamnos Americanus ◽  
Mountain Goats ◽  
Mountain Goat

Selenium levels and glutathione peroxidase (GSH-Px) activity were determined in the blood of wild and captive herds of bighorn sheep (Ovis canadensis), as well as in one wild mountain goat (Oreamnos americanus) herd. No significant relationship was established between blood selenium and GSH-Px activity for individual herds of bighorns, but when all herds were pooled, selenium was significantly (P < 0.01) correlated with GSH-Px. The hypothesis that bighorn sheep would exhibit higher GSH-Px activity per unit of blood selenium than domestic cattle was not supported. One bighorn population had blood selenium levels below those considered deficient in domestic sheep, yet exhibited no clinical signs of selenium deficiency. A blood selenium by GSH-Px relationship did not exist for the single mountain goat herd sampled. The seven blood samples collected from mountain goats did not differ from those from bighorn sheep in their GSH-Px activity relative to blood selenium levels.

ROCKY MOUNTAIN BIGHORN SHEEP (OVIS CANADENSIS CANADENSIS) MILK: II. ELECTROPHORETIC ANALYSES OF PROTEINS; CARBOHYDRATE CONTENT OF CASEIN

1967 ◽  
Vol 45 (4) ◽  
pp. 369-375 ◽  
Author(s):  
B. E. Baker ◽  
D. A. Blood ◽  
E. C. H. Chen
Keyword(s):  
Sialic Acid ◽  
Rocky Mountain ◽  
Bighorn Sheep ◽  
Ovis Canadensis ◽  
Carbohydrate Content ◽  
Electrophoretic Patterns ◽  
Sheep Milk ◽  
Starch Gel ◽  
Β Lactoglobulin ◽  
Suffolk Sheep

Samples of casein and whey were prepared from the milk of individual Rocky Mountain bighorn sheep and from Suffolk sheep. The casein from bighorn sheep milk contained more hexose, hexosamine, and sialic acid than did that from the milk of Suffolk sheep. The sheep caseins gave electrophoretic patterns (starch gel, polyacrylamide) that were similar to those obtained with bovine casein. The sheep whey contained an electrophoretic (polyacrylamide) component which had a mobility similar to that of bovine β-lactoglobulin.

Fatty acid profile of milk from Nordestina donkey breed raised on Caatinga pasture

2021 ◽  
pp. 1-5
Author(s):  
Tayanna Bernardo Oliveira Nunes Messias ◽  
Susana Paula Alves ◽  
Rui José Branquinho Bessa ◽  
Marta Suely Madruga ◽  
Maria Teresa Bertoldo Pacheco ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Gas Chromatography ◽  
Milk Fat ◽  
Fat Content ◽  
Donkey Milk ◽  
Fat Percentage ◽  
Mid Infrared ◽  
Milk Samples ◽  
The Third ◽  
Commercial Viability

Abstract In this research communication we describe the composition of fatty acids (FA) present in the milk of the Nordestina donkey breed, and how they differ during lactation. Milk samples were taken from 24 multiparous lactating Nordestina donkeys that grazed the Caatinga, comprising 5 animals at each of around 30, 60 and 90 d in milk (DIM) and a further 9 animals ranging from 120 to 180 DIM. The milk fat content was analysed by mid infrared spectroscopy and the FA profile by gas chromatography. The milk fat percentage ranged from 0.45 to 0.61%. The main FA found in milk were 16:0 and 18:1c9. These did not differ among DIM classes and comprised 23% and 25% of total FA. Notably, the α-Linolenic acid (18:3 n-3) was the third most abundant FA and differed (P < 0.05) with DIM, being lowest in the 30 and 60 DIM samples (around 10.7% of total FA) and highest in the 60 and 90 DIM classes (around 14.6% of total FA). The low-fat content and the FA profile of the donkey milk gives it potential as a functional ingredient, which could help to preserve the commercial viability of the Nordestina donkey breed.

scholarly journals Brucellosis in Captive Rocky Mountain Bighorn Sheep (Ovis canadensis) Caused by Brucella abortus Biovar 4

2004 ◽  
Vol 40 (2) ◽  
pp. 311-315 ◽  
Author(s):  
Terry J. Kreeger ◽  
Walter E. Cook ◽  
William H. Edwards ◽  
Todd Cornish
Keyword(s):  
Brucella Abortus ◽  
Rocky Mountain ◽  
Bighorn Sheep ◽  
Ovis Canadensis

scholarly journals Differences in leukocyte differentiation molecule abundances on domestic sheep (Ovis aries) and bighorn sheep (Ovis canadensis) neutrophils identified by flow cytometry

2016 ◽  
Vol 46 ◽  
pp. 40-46 ◽  
Author(s):  
Margaret A. Highland ◽  
David A. Schneider ◽  
Stephen N. White ◽  
Sally A. Madsen-Bouterse ◽  
Donald P. Knowles ◽  
...  
Keyword(s):  
Flow Cytometry ◽  
Bighorn Sheep ◽  
Ovis Canadensis ◽  
Ovis Aries ◽  
Domestic Sheep

scholarly journals The Effect of CLA-Rich Isomerized Poppy Seed Oil on the Fat Level and Fatty Acid Profile of Cow and Sheep Milk

Animals ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 912 ◽  
Author(s):  
Robert Bodkowski ◽  
Katarzyna Czyż ◽  
Anna Wyrostek ◽  
Paulina Cholewińska ◽  
Ewa Sokoła-Wysoczańska ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Fatty Acid Profile ◽  
Milk Fat ◽  
Seed Oil ◽  
Fat Content ◽  
Atherogenic Index ◽  
Poppy Seed ◽  
Sheep Milk ◽  
Δ9 Desaturase

The aim of the study was to examine the effect of dietary supplementation of isomerized poppy seed oil (IPO) enriched with conjugated dienes of linoleic acid (CLA) on cow and sheep milk parameters (fat content, fatty acid profile, Δ9-desaturase index, and atherogenic index). The process of poppy seed oil alkaline isomerization caused the formation of CLA isomers with cis-9,trans-11, trans-10,cis-12, and cis-11,trans-13 configurations in the amounts of 31.2%, 27.6%, and 4.1% of total fatty acids (FAs), respectively. Animal experiments were conducted on 16 Polish Holstein Friesian cows (control (CTRL) and experimental (EXP), n = 8/group) and 20 East Friesian Sheep (CTRL and EXP, n = 10/group). For four weeks, animals from EXP groups received the addition of IPO in the amount of 1% of dry matter. Milk was collected three times: on days 7, 14, and 30. Diet supplementation with IPO decrease milk fat content (p < 0.01). Milk fat from EXP groups had higher levels of polyunsaturated fatty acids, including FAs with beneficial biological properties, that is, CLA and TVA (p < 0.01), and lower levels of saturated fatty acids, particularly short- (p < 0.01) and medium-chain FAs (p < 0.05). The addition of IPO led to a decrease in the atherogenic index.

scholarly journals Comparison of fatty acid composition in milk fat of Czech Pied cattle andHolsteincattle

2011 ◽  
Vol 50 (No. 3) ◽  
pp. 122-128 ◽  
Author(s):  
M. Pešek ◽  
J. Špička ◽  
E. Samková
Keyword(s):  
Fatty Acids ◽  
Milk Fat ◽  
Methyl Esters ◽  
Capric Acid ◽  
Holstein Cows ◽  
The Czech Republic ◽  
Milk Samples ◽  
Daily Diet ◽  
Fat Composition ◽  
The Individual

In May 2003 differences in milk fat composition in two main dairy breeds in the Czech Republic, Czech Pied cattle and Holstein cattle, were studied in two uniform groups, each containing eight cows. The groups were housed together and received the same daily diet. Fatty acids were determined in mean milk samples from the individual cows as their methyl esters using a gas chromatography procedure. The groups of the fatty acids, namely saturated (SAFA), monounsaturated (MUFA) and polyunsaturated (PUFA) ones, were examined together with the individual acids. The milk fat of Czech Pied cattle was found to contain significantly less SAFAs than the fat of Holstein cows (60.78 and 63.62% of total acids; P &lt; 0.05). Determined mean MUFA contents (27.64 and 25.76%) and total levels (34.31 and 32.11%) of all the unsaturated acids (MUFAs and PUFAs) were insignificantly elevated in the milk fat of Czech Pied cattle. The contents of the most of the individual fatty acids did not differ considerably between the breeds. In Holstein cows, significantly higher contents (P &lt; 0.05) of capric acid (C<sub>10:0</sub>) and stearic acid (C<sub>18:0</sub>) 3.30 and 4.45%, respectively, as compared with 2.69 and 2.61% for Czech Pied cows, were observed. The milk fat of Czech Pied cows had significantly higher contents of oleic acid (C<sub>18:1</sub>) 23.60% (P &lt; 0.05) and of an isomer of octadecatrienic acid (C<sub>18:3n4</sub>) 0.16% (P &lt; 0.001) as compared with 21.68 and 0.10%, respectively, in the fat ofHolstein cows. &nbsp;

Ecological correlates of pneumonia epizootics in bighorn sheep herds

2001 ◽  
Vol 79 (8) ◽  
pp. 1423-1432 ◽  
Author(s):  
Ryan J Monello ◽  
Dennis L Murray ◽  
E Frances Cassirer
Keyword(s):  
Horizontal Transmission ◽  
Bighorn Sheep ◽  
Ovis Canadensis ◽  
Domestic Sheep ◽  
Population Declines ◽  
Density Dependent ◽  
Temperature Regimes ◽  
Reservoir Hosts ◽  
The Relationship ◽  
Population Numbers

Bighorn sheep (Ovis canadensis) populations commonly experience pneumonia outbreaks caused by Pasteurella spp. that result in a partial or complete dieoff. Although several factors can contribute to Pasteurella spp. transmission or infectivity in bighorn sheep, to date the importance of such factors in population declines has not been rigorously examined. We evaluated the relationship between pneumonia-induced dieoffs in bighorn sheep and environmental and biological factors by analyzing demographic information for 99 herds across the species' geographic range. Our analysis revealed that 88% of pneumonia-induced dieoffs occurred at or within 3 years of peak population numbers, which implies that density-dependent forces such as food shortage or stress contribute to bighorns' susceptibility to pneumonia. There were few differences in the growth rates of dieoff and non-dieoff populations, suggesting that pneumonia did not manifest itself demographically prior to an outbreak. On average, abundance of lambs was most dramatically reduced post outbreak (–66%) relative to that of either rams (–35%) or ewes (–42%). Deviations in normal precipitation and temperature regimes were not associated with the onset of pneumonia outbreaks, but herds found in proximity to domestic sheep tended to be more susceptible to dieoff. Our results suggest that bighorn sheep herds are rendered vulnerable to pneumonia principally through density-dependent factors, as well as through horizontal transmission of Pasteurella spp. from domestic sheep serving as reservoir hosts.

Sign in / Sign up

Export Citation Format

Share Document