The effects of palmitic, stearic acid and alpha-linolenic fatty acids on feed intake, milk production and milk components in Holstein fresh cows

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SAMIEI ZAFARGHANDI M.; GHOORCHI TAGHI; Asadi Alamouti A.; GHANBARI F.; DEHGHAN BANADAKY M.

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Journal: JOURNAL OF RUMINANT RESEARCH Year:2019 | Volume:7 | Issue:2 Page(s): 129-144

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Title

The effects of palmitic, stearic acid and alpha-linolenic fatty acids on feed intake, milk production and milk components in Holstein fresh cows

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Keywords

Saturated fatty acidsQ1

Omega-3Q1

Early lactationQ1

Abstract

Background and objectives: Protected or inert fat supplements on rumen activity, have been converted to a common ingredient in rations due to high energy content and adaptability in dairy farms. Usually these fats contain high concentrations of long chain fatty acids, including palmitic, stearic, oleic, and linoleic. Recent researches has shown that fatty acids are not just a source of energy, but also, have different metabolic applications in physiological systems and contributed in various ways in their production. In this study, the effects of two Saturated fatty acids including palmitic and stearic that are included the highest amounts of fat supplements are studied in the presence and absence of α-linolenic on yield and milk components. Materials and methods: Thirty two dairy cows with more than two parturition, immediately after parturition, entered into the experimental design with randomized complete block design with four treatments (2 × 2 factorials) and kept in the individual stall for 65 days. The yields and milk components were measured for each one. Experimental treatments included: 1) Basal diet with 1. 8% stearic acid-rich supplement (containing at least 75% of stearic acid), 2) Basal diet with 1. 5% stearic acid-rich supplement and 0. 3% α-linolenic, 3) Basal diet with 1. 8% palmitic acid-rich supplement (containing at least 75% of palmitic acid), and 4) Basal diet with 1. 5% palmitic acid-rich supplement and 0. 3% α-linolenic. Results: Consumption of dry matter of cows fed with stearic acid treatment without α-linolenic acid (24. 77 kg) was higher than other treatments (P≤ 0. 05). The interaction of Saturated fatty acids with α-linolenic acid on milk production was significant (P≤ 0. 01) so that the treatment containing α-linolenic acid and palmitic acid increased milk production (P≤ 0. 05). The effect of Saturated fatty acids on the concentration of milk fat and the corrected milk production based on 3. 5% fat and energy-corrected milk was not significant, but supplementation of α-linolenic acid increased the above parameters (P≤ 0. 05). Milk urea nitrogen concentrations were affected by the interaction of saturated fatty acid and α-linolenic acid supplementation, with the addition of α-linolenic acid to the palmitic acid diet significantly reduced the amount of milk urea nitrogen, but in stearic acid treatment no difference was observed in milk urea nitrogen (P = 0. 08). Conclusion: Based on the results of this study, the combined use of α-linolenic acid and palmitic acid increased the production of Holstein cows in Early lactation. With the use of stearic acid in the early stages of lactation, dry matter intake can be improved. Also, α-linolenic acid consumption increased the percentage and total of milk fat in fresh dairy cows in Early lactation.

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APA: Copy

SAMIEI ZAFARGHANDI, M., GHOORCHI, TAGHI, Asadi Alamouti, A., GHANBARI, F., & DEHGHAN BANADAKY, M.. (2019). The effects of palmitic, stearic acid and alpha-linolenic fatty acids on feed intake, milk production and milk components in Holstein fresh cows. JOURNAL OF RUMINANT RESEARCH, 7(2 ), 129-144. SID. https://sid.ir/paper/244070/en

Vancouver: Copy

SAMIEI ZAFARGHANDI M., GHOORCHI TAGHI, Asadi Alamouti A., GHANBARI F., DEHGHAN BANADAKY M.. The effects of palmitic, stearic acid and alpha-linolenic fatty acids on feed intake, milk production and milk components in Holstein fresh cows. JOURNAL OF RUMINANT RESEARCH[Internet]. 2019;7(2 ):129-144. Available from: https://sid.ir/paper/244070/en

IEEE: Copy

M. SAMIEI ZAFARGHANDI, TAGHI GHOORCHI, A. Asadi Alamouti, F. GHANBARI, and M. DEHGHAN BANADAKY, “The effects of palmitic, stearic acid and alpha-linolenic fatty acids on feed intake, milk production and milk components in Holstein fresh cows,” JOURNAL OF RUMINANT RESEARCH, vol. 7, no. 2 , pp. 129–144, 2019, [Online]. Available: https://sid.ir/paper/244070/en

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