scholarly journals Effects of calcium salts of long-chain fatty acids on ruminal digestibility, microbial protein yield and lactation performance

1993 ◽  
Vol 6 (3) ◽  
pp. 395-400 ◽  
Author(s):  
W. J. Maeng ◽  
J. H. Lim ◽  
S. R. Lee
Keyword(s):  
Fatty Acids ◽  
Protein Yield ◽  
Long Chain Fatty Acids ◽  
Microbial Protein ◽  
Lactation Performance ◽  
Calcium Salts ◽  
Long Chain ◽  
Chain Fatty Acids

scholarly journals Productive and reproductive performance and blood chemistry on grazing Brahman replacement heifers supplemented with fatty acids and protein

2021 ◽  
Vol 22 (3) ◽  
Author(s):  
José Luis Bello Faria ◽  
Robert Emilio Mora Luna ◽  
Ana María Herrera-Angulo ◽  
Bladimiro Acosta-Rivas
Keyword(s):  
Fatty Acids ◽  
Body Weight ◽  
Average Daily Gain ◽  
Blood Chemistry ◽  
Protein Supplementation ◽  
Long Chain Fatty Acids ◽  
Calcium Salts ◽  
Daily Gain ◽  
Long Chain ◽  
Chain Fatty Acids

To evaluate the effect of calcium salts of long-chain fatty acids (CaLCFA) and protein supplementation on body weight (BW), average daily gain (ADG), pregnancy rate (PR), and blood chemistry, 57 Brahman heifers with 309.1 ± 3.04 kg BW and 1,010 ± 8.51 days of age, were divided into three BW uniform groups and assigned for 102 days to three treatments under a completely randomized design: 1) grazing forage only (F); 2) F+CaLCFA, and 3) F+CaLCFA+protein-energy mix (CaLCFA+CP) with 453 protein g/kg, containing mainly (g/kg) CaLCFA (200), hydrolyzed feather meal (300), and cornmeal (375). About 0.2 and 1 kg/animal/d of CaLCFA and CaLCFA+CP were offered, respectively, with an average intake of 200 and 192 g/animal/d for the same order of supplements. The breeding period (BP) lasted for 45 days and started 57 days after beginning the supplementation period. Body weight showed a treatment × time interaction (p < 0.01), being different at the end of the BP (348; 338 and 331 kg, respectively for CaLCFA, CaLCFA+CP, and F). Average daily gain (g/d) was higher (p < 0.01) for CaLCFA (358) than for CaLCFA+CP (281), and lower for F (206). Overall, PR was higher (p < 0.05) for CaLCFA+CP (68.4 %) and lower for F (36.8 %). Cholesterol (mg/dL) was higher (p < 0.05) for CaLCFA+CP (139) and lower for F (117). Calcium salts of long-chain fatty acids and CaLCFA+CP supplementation improved BW and ADG of Brahman heifers at first mating, while PR and cholesterol increased only with CaLCFA+CP supplementation.

Influence of management type and stage of lactation on the performance and milk fatty acid profile of dairy camels (Camelus dromedaries)

2018 ◽  
Vol 156 (9) ◽  
pp. 1111-1122 ◽  
Author(s):  
Moez Ayadi ◽  
Mohamed Hammadi ◽  
Ramon Casals ◽  
Moufida Atigui ◽  
Touhami Khorchani ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Milk Fat ◽  
Long Chain Fatty Acids ◽  
Lactation Performance ◽  
Dromedary Camels ◽  
Stage Of Lactation ◽  
Atherogenicity Index ◽  
Health Promoting ◽  
Long Chain ◽  
Chain Fatty Acids

AbstractThe current research paper addresses the hypothesis that management system (grazing vs. stabling) and/or stage of lactation (early- to late-lactation) can influence the lactation performance and milk fatty acid (MFA) profile in dromedary camels. The results obtained revealed that milk and protein yields of stabled camels were higher, while milk fat content was lower compared to grazing camels. In addition, stabled camels produced milk richer in short- and medium-chains fatty acids but lower in long-chain fatty acids and fatty acids linked with possible health benefits such as oleic acid, vaccenic acid (VA) and rumenic acid (RA), when compared to grazing camels. Moreover, atherogenicity index was higher, while overall Δ9-desaturase and health-promoting indices were lower in stabled camels. In a similar way, results demonstrated an increase in milk fat and protein contents as lactation advanced. In fact, camels at mid-lactation produced milk richer in short- and medium-chain fatty acids as well as total saturated fatty acids but poorer in oleic acid, VA, RA, long-chain fatty acids and total unsaturated fatty acids, when compared to milk samples collected at early stage of lactation. Moreover, compared to early- and late-lactations, atherogenicity index was higher while overall-Δ9-desaturase and health promoting indexes were lower at mid-lactation. In conclusion, the intensive stabling system and mid-lactation stage can alter lactation performance and MFA profile in dairy dromedary camels.

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