Dall sheep (Ovis dalli dalli) milk. I. Effects of stage of lactation on the composition of the milk

1970 ◽  
Vol 48 (4) ◽  
pp. 629-633 ◽  
Author(s):  
H. W. Cook ◽  
A. M. Pearson ◽  
N. M. Simmons ◽  
B. E. Baker
Keyword(s):  
Fatty Acid ◽  
Northwest Territories ◽  
Stage Of Lactation ◽  
Sheep Milk ◽  
Ovis Dalli

Milk was collected from nine dall sheep which were killed either in the Yukon or the Northwest Territories. The stage of lactation of the animals ranged from 10 days prepartum to 24 weeks postpartum. The gross composition and the fatty acid and the mineral constitution of the dall sheep milk were determined.

scholarly journals Mare’s Milk from a Small Polish Specialized Farm—Basic Chemical Composition, Fatty Acid Profile, and Healthy Lipid Indices

Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1590
Author(s):  
Grażyna Czyżak-Runowska ◽  
Jacek Antoni Wójtowski ◽  
Romualda Danków ◽  
Daniel Stanisławski
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Chemical Composition ◽  
Birth Order ◽  
Fatty Acid Profile ◽  
Age Structure ◽  
Atherogenic Index ◽  
Milk Samples ◽  
Stage Of Lactation ◽  
Bulk Tank

The objective of this study was to determine the chemical composition, fatty acid profile, and values of healthy indices of milk from a specialized farm of Polish Coldblood mares of different ages, birth orders, and lactation stages. Milk samples (n = 48) were collected for analysis in weeks 10, 15, and 25 of lactation from mares aged between five and 14 years. The study showed that the stage of lactation has a significant effect on the fatty acid (FA) profile of the milk produced on the farm. The highest concentration of monounsaturated and polyunsaturated FAs was found in milk produced from the 15th week of lactation. The milk was also characterized by low values of atherogenic and thrombogenic indices, which indicate the health benefits of milk with respect to the content of fatty acids and their potential to prevent or cause atherosclerosis and thrombosis. The study also found a significant correlation between the number of foalings (birth order), the fatty acid profile, and atherogenic index of milk produced on the farm. The findings from the study indicate that it is possible to modify the fatty acid profile of bulk tank milk through appropriate management of the age structure of the herd of mares. To confirm this dependence, the study will be continued on a larger group of mares.

scholarly journals Sustainable Intensification? Increased Production Diminishes Omega-3 Content of Sheep Milk

2020 ◽  
Vol 12 (3) ◽  
pp. 1228
Author(s):  
Nikolaos Voutzourakis ◽  
Nikolaos Tzanidakis ◽  
Sokratis Stergiadis ◽  
Leonidas Rempelos ◽  
Mick Eyre ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Milk Composition ◽  
Food Composition ◽  
Sustainable Intensification ◽  
Consumer Health ◽  
Omega 3 ◽  
Concentrate Supplementation ◽  
Sheep Milk ◽  
Fat Composition ◽  
System Sustainability

Intensifying agricultural production alters food composition, but this is often ignored when assessing system sustainability. However, this could compromise consumer health and influence the concept of “sustainable diets”. Here, we consider the milk composition of Mediterranean dairy sheep, finding inferior fatty acid (FA) profiles with respect to consumer health as a result of a more intensive system of production. Semi-intensive management produced 57% more milk per ewe, with a 20% lower fat content (but inferior fat composition). The milk had a nutritionally poorer fatty acid (FA) profile, with an 18% lower omega-3 FA concentration (n-3) (19% fewer long-chain n-3s) and a 7% lower monounsaturated FA concentration but a 3% higher saturated FA (9% higher in C14:0) concentration compared to ewes under traditional, extensive management. A redundancy analysis identified close associations between fat composition and animal diets—particularly concentrate supplementation and cultivated pasture grazing—and n-3 was associated with grazing in diverse, native mountain pastures. This paper questions if identifying such key elements in traditional systems could be deployed for “sustainable intensification” to maintain food quality while increasing output.

Fat content and fatty acids profile of colostrum and milk of primitive Konik horses (Equus caballus gmelini Ant.) during six months of lactation

2008 ◽  
Vol 75 (3) ◽  
pp. 302-309 ◽  
Author(s):  
Jan Pikul ◽  
Jacek Wójtowski ◽  
Romualda Danków ◽  
Beata Kuczyńska ◽  
Jacek Łojek
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Equus Caballus ◽  
Fat Content ◽  
Slight Effect ◽  
Milk Samples ◽  
Stage Of Lactation ◽  
Fatty Acids Profile

The effect of the stage of lactation, the number of foals and age of the mare on changes in the fat content and fatty acid composition of colostrum and milk of primitive Konik horses was investigated. Colostrum and milk samples from 12 lactating mares were collected at the beginning of lactation, on the days 1 and 2 after foaling and then, starting from the first month of lactation, at 4-week intervals up to the sixth month of lactation. Significant differences were observed in fat content as well as the composition of some analysed fatty acids between colostrum and milk of mares of the Konik breed. The number of foalings and the age of mares did not have a statistically significant effect on the fat content in milk and had only a slight effect on the fatty acid composition. Milk produced by mares of the Konik breed is characterized by a considerable content of polyene fatty acids with 18 carbon atoms, a low ratio of n-6 fatty acids to n-3 fatty acids as well as low, highly advantageous values of atherogenic and thrombogenic indices.

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 Effects of Breed and Stage of Lactation on Milk Fatty Acid Composition of Italian Goat Breeds

Animals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 764 ◽  
Author(s):  
Sarah Currò ◽  
Carmen Manuelian ◽  
Massimo De Marchi ◽  
Salvatore Claps ◽  
Domenico Rufrano ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Repeated Measures ◽  
Dairy Products ◽  
Fixed Effects ◽  
Sensory Quality ◽  
Mixed Model ◽  
Goat Milk ◽  
Stage Of Lactation

Fatty acid (FA) profile plays an important role on human health and on sensory quality of dairy products. There is few information about breed influence on milk FA profile of local goat breeds. This study aimed to characterize and compare the milk FA profile of 5 local endangered goat breeds (Garganica, Girgentana, Jonica, Maltese, and Mediterranean Red) and a cosmopolitan breed (Saanen) reared in the same farm during a complete lactation. A total of 252 milk samples were collected monthly from 42 goats (7 goats per breed) and analyzed for gross composition and FA profile. Individual FA was determined using gas-chromatography. Data were analyzed using a mixed model with repeated measures with breed and week of lactation as fixed effects. Results showed that the FA profile was significantly affected by week of lactation and only few FA by breed effect (p < 0.05). Overall, the main differences were found between Saanen and local breeds. This study contributed to the characterization of goat milk FA profile, and it may be of interest for the valorization of milk from local goat breeds which seem to have a healthier profile than milk of the cosmopolitan breed.

Building of prediction models by using Mid-Infrared spectroscopy and fatty acid profile to discriminate the geographical origin of sheep milk

LWT ◽  
2017 ◽  
Vol 75 ◽  
pp. 131-136 ◽  
Author(s):  
Marco Caredda ◽  
Margherita Addis ◽  
Ignazio Ibba ◽  
Riccardo Leardi ◽  
Maria Francesca Scintu ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Fatty Acid ◽  
Fatty Acid Profile ◽  
Prediction Models ◽  
Geographical Origin ◽  
Mid Infrared ◽  
Mid Infrared Spectroscopy ◽  
Sheep Milk

Mercury and omega-3 fatty acid profiles in freshwater fish of the Dehcho Region, Northwest Territories: Informing risk benefit assessments

2018 ◽  
Vol 637-638 ◽  
pp. 1508-1517 ◽  
Author(s):  
Matthew J. Laird ◽  
Juan J. Aristizabal Henao ◽  
Ellen S. Reyes ◽  
Ken D. Stark ◽  
George Low ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Freshwater Fish ◽  
Northwest Territories ◽  
Fatty Acid Profiles ◽  
Omega 3 ◽  
Omega 3 Fatty Acid
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