Seal milk. Π. Harp seal (Pagophilus groenlandicus) milk: effects of stage of lactation on the composition of the milk

1971 ◽  
Vol 49 (8) ◽  
pp. 1085-1088 ◽  
Author(s):  
D. R. Van Horn ◽  
β. Ε. Baker
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Harp Seal ◽  
Lactation Period ◽  
Stage Of Lactation ◽  
Pagophilus Groenlandicus ◽  
In Captivity ◽  
Definite Pattern ◽  
Ice Floes

A harp seal and her pup were caught on the ice floes in the Gulf of St. Lawrence and were kept in captivity for 16 days. Milk was collected from the seal 2, 3, 5, 6, and 16 days postpartum. The gross composition and the fatty acid and mineral constitution of the milk were determined. Both the fat and the protein contents were minimal on the 16th day postpartum. The fatty acid composition of the fat did not follow a definite pattern of change during the lactation period.

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 Fatty Acid Composition of Milk. III. Variation with Stage of Lactation

1966 ◽  
Vol 49 (11) ◽  
pp. 1401-1405 ◽  
Author(s):  
J.W. Stull ◽  
W.H. Brown ◽  
Carlos Valdez ◽  
Henry Tucker
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Stage Of Lactation

Seal milk. I. Harp seal (Pagophilus groenlandicus) milk: composition and pesticide residue content

1969 ◽  
Vol 47 (6) ◽  
pp. 1129-1132 ◽  
Author(s):  
H. W. Cook ◽  
B. E. Baker
Keyword(s):  
Fatty Acid ◽  
Mineral Composition ◽  
Pesticide Residue ◽  
Milk Composition ◽  
Harp Seal ◽  
Pagophilus Groenlandicus ◽  
Ice Floes

Milk was collected from three harp seals which were caught on the ice floes in the Gulf of St. Lawrence. The gross composition, fatty acid constitution, mineral composition, and pesticide residue content of the milks were determined.

Dietary fat and climate alter food intake, performance of lactating sows and their litters and fatty acid composition of milk

1999 ◽  
Vol 69 (2) ◽  
pp. 353-365 ◽  
Author(s):  
R. Christon ◽  
G. Saminadin ◽  
H. Lionet ◽  
B. Racon
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Food Intake ◽  
Acid Composition ◽  
Dietary Fat ◽  
Live Weight ◽  
Lactation Period ◽  
Large White ◽  
Fat Level ◽  
Ad Libitum

AbstractTwo experiments were carried out simultaneously in a temperate environment (T), at Sourches (west France), with 24 Landrace X Large White sows and in a tropical environment (TRO), in Guadeloupe, France (16° latitude N, 61° longitude W), with 18 Large White sows, to study the effect of incorporating fat into the lactation diet on sow and litter performance. In each environment, multiparous sows were divided into three groups and given either a control diet (C) containing 20 g fat per kg, or the same diet enriched with a 50 : 50 peanut-rapeseed oil mixture, so as to obtain a fat content of 80 g/kg (medium fat, MF) or 140 g/kg (high fat, HF). A restricted experimental diet was supplied to the sows from day 105 of gestation until farrowing and then ad libitum throughout the 28-day lactation period. The piglets all had ad libitum access to solid food from day 21 to day 70. Milk samples were collected 24 h post partum (colostrum) and at day 21 of lactation. Chemical composition of milk was determined and fatty acid composition was assessed by capillary gas chromatography. Compared with T, the TRO sows showed an increase (P < 0⋅001) in rectal temperature and respiration rate but a decrease in food intake (P < 0·01), milk yield (P < 0⋅001) and litter weight gain from birth to weaning (P < 0⋅05) as well as from weaning to day 70, reaching 25 to 30 kg live weight (P < 0⋅05). However, as dietary fat level increased, the T sows showed a linear decrease (P < 0⋅01) in food intake and no significant change in metabolizable energy (ME) intake during the lactation period. In TRO, the MF diet led to a 0⋅22 proportional increase (P < 0⋅01) in ME intake through a change in nycthemeral feeding behaviour. Both environment and increased dietary fat level significantly affected the fat level and fatty acid composition of colostrum as well as mature milk, particularly n-3 polyunsaturated fatty acid concentration in milk. In conclusion, the addition of fat to the lactating sow diet may be more beneficial under high ambient temperatures than in thermoneutral conditions.

Sign in / Sign up

Export Citation Format

Share Document