Aspects of Lactation in the Crab-Eater Seal (Lobodon-Carcinophagus)

1993 ◽  
Vol 41 (3) ◽  
pp. 203 ◽  
Author(s):  
B Green ◽  
A Fogerty ◽  
JA Libke ◽  
K Newgrain ◽  
P Shaughnessy
Keyword(s):  
Fatty Acid ◽  
Lactation Period ◽  
Fatty Acid Profiles ◽  
Preliminary Results ◽  
Milk Samples ◽  
Phocid Seals ◽  
Crabeater Seals ◽  
Lobodon Carcinophagus

Milk samples were obtained from seven crabeater seals (Lobodon carcinophagus) at various stages of lactation. The milk was high in solids (67%), with lipid (51%) accounting for most of the solids and energy. The fatty acid profiles were similar to the milk of other phocid seals and to krill, the major dietary item. Our preliminary results from four animals suggest that about 90 L of milk are transferred from the cow to the pup during the lactation period, estimated to be 17 days in length.

Temporal Variability in Antarctic Marine Ecosystems: Periodic Fluctuations in the Phocid Seals

1991 ◽  
Vol 48 (4) ◽  
pp. 631-639 ◽  
Author(s):  
J. Ward Testa ◽  
Gary Oehlert ◽  
David G. Ainley ◽  
John L. Bengtson ◽  
Donald B. Siniff ◽  
...  
Keyword(s):  
Large Scale ◽  
Southern Oscillation ◽  
Marine Ecosystems ◽  
Reproductive Rate ◽  
Data Sets ◽  
Weddell Seals ◽  
Antarctic Marine ◽  
Phocid Seals ◽  
Crabeater Seals ◽  
Lobodon Carcinophagus

Three species of seals around Antarctica have shown quasi-cyclic patterns in some aspect of their biology: the age structure of crabeater seals (Lobodon carcinophagus) around the Antarctic Peninsula has shown strong cohorts separated by 4- to 5-yr intervals; juvenile leopard seals (Hydrurga leptonyx) have appeared in unusually large numbers at Macquarie Island, also at 4- to 5-yr intervals; and Weddell seals (Leptonychotes weddellii) in McMurdo Sound have undergone fluctuations in reproductive rate every 4–6 yr. Complex demodulation was used to compare patterns among these three data sets and with the Southern Oscillation Index (SOI). All of the seal data sets showed evidence of cyclical behavior when demodulated at a period of 5 yr. The Weddell seals were generally in phase with the SOI since the Weddell series began in 1970. The leopard seals and SOI were in phase in the 1960's, but thereafter the SOI series led the leopard seal series by about one quarter of a cycle. The crabeater series was more complicated, but similarities with the other data sets also were seen. If these tentative observations are confirmed, they point to large-scale oceanographic variation, possibly related to the El Niño – Southern Oscillation (ENSO), as an important mechanism in Antarctic marine ecosystems.

scholarly journals Nutritional and Fatty Acid Profile of Human Milk Samples from District Malakand, Pakistan

2020 ◽  
Vol 21 (2) ◽  
pp. 263-270
Author(s):  
Muhammad Adil
Keyword(s):  
Fatty Acid ◽  
Breast Milk ◽  
Fatty Acid Profile ◽  
Developed Countries ◽  
Vital Role ◽  
Fatty Acid Profiles ◽  
Milk Samples ◽  
Complete Diet ◽  
The Difference ◽  
Time Of Feeding

Generally, breast milk is the first and complete diet for an infant. It has a pivotal role in determining the growth pattern of the kids. Breast milk has various nutritional ingredients and is a source of energy for the infants. It has a vital role in the development of the immune system. The composition of milk varies with the diet of the mother, environment, and time of feeding. The fatty acid profile and nutritional value of the breast milk of the Malakand district were determined. The fats and protein were determined using the recommended methods by the Association of Official Analytical Chemists (AOAC) and Ward method, respectively while the fatty acid profile was determined through GC-MS. Milk samples were analyzed for proximate composition and from the results the moisture content was 87.69%, ash 0.29%, fats 3.63%, protein 0.94%, and carbohydrate content ware 7.45%. The average fatty acid profiles of milk showed that it is composed of saturated (SFA), monounsaturated (MUFA) and polyunsaturated fatty acid (PUFA) with a concentration of 38.41%, 29.59%, and 14.70%, respectively. In general, both proximate and fatty acid profiles were found slightly different compared to the contents of breast milk in developed countries which may be due to the difference in diet, environment, and socioeconomic status of women in Pakistan.

scholarly journals Fatty acid composition of milk from Teteven nativ sheep in mountain region

2011 ◽  
Vol 27 (4) ◽  
pp. 1837-1843 ◽  
Author(s):  
G. Gerchev ◽  
A. Mileva ◽  
N. Naydenova ◽  
I. Yankov ◽  
G. Mihaylova
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Saturated Fatty Acids ◽  
Mountain Region ◽  
Lactation Period ◽  
Monthly Basis ◽  
Milk Samples ◽  
Sheep Milk

The study was performed on individual milk samples obtained on the monthly basis during the lactation period from 5 Teteven sheep reared in the Sredna Stara Planina mountain region. The fat extraction of milk samples was done by the Rose-Gottlieb method. Fatty acid composition was determined on a gas chromatograph with flame ionization detector and capillary column. The trends in fatty acid concentrations in sheep milk during the lactation were variable. The proportion of saturated fatty acids in Teteven sheep milk during the lactation was relatively high and varied from 70.34 to 72.19%. Variations in myristic acid concentrations by months were not significant (11.49-11.83%). The total amount of polyunsaturated fatty acids in the studied milk was relatively low and with similar values for the 4 months spent on pastures (3.78-4.11%). For this period, monounsaturated fatty acids, represented mainly by oleic acid (S18:1) decreased from 25.76 to 24.20%. The short-chain fatty acid concentrations were the highest in milk samples obtained in April and May, of medium-chain ones - in June and July, whereas long-chain fatty acids concentrations were similar over the grazing period.

scholarly journals Vitamin E and vitamin A contents, fatty acid profiles, and gross composition of harp and hooded seal milk through lactation

1999 ◽  
Vol 77 (6) ◽  
pp. 952-958 ◽  
Author(s):  
C Debier ◽  
K M Kovacs ◽  
C Lydersen ◽  
E Mignolet ◽  
Y Larondelle
Keyword(s):  
Fatty Acid ◽  
Vitamin E ◽  
Vitamin A ◽  
Harp Seal ◽  
Milk Lipid ◽  
Lactation Period ◽  
Fatty Acid Profiles ◽  
Milk Fatty Acids ◽  
Hooded Seal ◽  
Cystophora Cristata

This study reports fatty acid profiles and vitamin A and vitamin E contents of the milk of the harp seal (Phoca groenlandica) and hooded seal (Cystophora cristata) throughout the lactation period, as well as standard compositional analyses. The milk for this study was collected from harp and hooded seals breeding on the pack ice in the Gulf of St. Lawrence. Mother-pup pairs were serially captured, or point-sampled, in order to obtain milk samples during different lactation stages. Milk lipids showed the respective species' typical patterns during lactation, with a significant increase for harp seal milk and a relatively constant value for hooded seal milk. The profiles of most of the milk fatty acids remained relatively stable over the course of lactation in both species. Vitamin A content was also quite stable through lactation. By contrast, vitamin E content underwent a dramatic drop between the day of birth and early lactation for harp seals and from birth to midlactation for hooded seals. It then continued to decrease at a slower rate until the end of lactation in both species. The highest vitamin E content of colostrum reached 125 mg/kg of milk for harp seals and 200 mg/kg of milk for hooded seals. These concentrations subsequently dropped to 20-50 mg/kg of milk by early or mid lactation. These changes in this lipophilic, antioxidizing vitamin were not correlated with milk lipid content or its polyunsaturated fatty acid profiles.

Trophic niches determined from fatty acid profiles of sympatric coral reef mesopredators

2019 ◽  
Vol 632 ◽  
pp. 159-174 ◽  
Author(s):  
SL Bierwagen ◽  
H Pethybridge ◽  
MR Heupel ◽  
A Chin ◽  
CA Simpfendorfer
Keyword(s):  
Fatty Acid ◽  
Coral Reef ◽  
Fatty Acid Profiles ◽  
Trophic Niches

Relationships among macro-minerals, other selected serum markers of bone profile and milk components of dairy cows during late-lactation

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Ryszard Mordak ◽  
Zbigniew Dobrzański ◽  
Robert Kupczyński
Keyword(s):  
Dairy Cows ◽  
Milk Fat ◽  
Dry Matter ◽  
Inorganic Phosphorus ◽  
Serum Markers ◽  
Laboratory Diagnostics ◽  
Lactation Period ◽  
Milk Samples ◽  
Milk Components ◽  
Macro Mineral

AbstractTesting blood and milk parameters as well as analysing the relationships among these markers is very useful for monitoring the internal homeostasis and health in high-yielding dairy cows during various production periods. The aim of the study was to assess the correlations (relationships) among macro-minerals, such as calcium (Ca), inorganic phosphorus (P), magnesium (Mg), other selected bone profile markers, such as total protein (TP), albumin, activity of alkaline phosphatase (ALP) measured in serum and selected milk components such as number of somatic cells (SCC), colony-forming units (CFU), milk fat (MF), milk protein (MP), milk lactose (ML), dry matter (DM), non-fat dry matter (FDM) and milk production in late-lactation cows. Both blood and milk samples were collected from 11 clinically healthy milking cows during the late-lactation period. The cows were examined once a day for 3 consecutive days resulting in 33 sets of blood and milk samples for laboratory and statistical analysis. Significant correlations were observed between: Mg and MP, Mg and FDM, ALP and SCC, TP and SCC, TP and MP, TP and FDM, albumin and MP, albumin and FDM, P and Mg, Mg and albumin, and between TP and albumin. When monitoring macro-mineral homeostasis and mammary gland health, especially in intensively fed high-yielding dairy cows correlations between these markers should be considered. The revealed correlations can allow for deeper comparative laboratory diagnostics of homeostasis and can be especially useful for laboratory monitoring of the potential risk of subclinical macro-mineral deficiency in high-yielding dairy cows.

The assessment of biofilm community composition on plumbing materials in filtered and unfiltered water distribution systems

2003 ◽  
Vol 3 (1-2) ◽  
pp. 187-191
Author(s):  
M.M. Critchley ◽  
N.J. Cromar ◽  
H.J. Fallowfield
Keyword(s):  
Drinking Water ◽  
Fatty Acid ◽  
Community Composition ◽  
Distribution Systems ◽  
Water Distribution ◽  
Water Distribution Systems ◽  
Polymer Materials ◽  
Fatty Acid Profiles ◽  
Water Supplies ◽  
Drinking Water Distribution Systems

Biofilms have been extensively characterised within drinking water distribution systems. However, the significance of materials on biofilm species diversity is not established. This study investigated the community composition of biofilms on plumbing materials receiving filtered and unfiltered water supplies. Biofilms were extracted from polybutylene, polyethylene, cross-linked polyethylene, unplasticised polyvinyl chloride and copper tubes in sampling rigs receiving Murray-Onkaparinga water before or after filtration. Biofilms were extracted and analysed for fatty acid composition using the FAME™ methodology. There were differences in the fatty acid profiles of biofilms and the respective water supplies, indicating differences in the attached and planktonic communities. The results also showed significant differences in the fatty acid profiles of biofilms on the polymer materials compared to copper, suggesting variations in biofilm populations on the different materials. The potential for materials to select for microbial populations has significant implications for the ecology of drinking water biofilms.

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