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Effects of dietary deoiled soy lecithin supplementation on milk production and fatty acid digestibility in Holstein dairy cows.
J Dairy Sci. 2021 Feb; 104(2):1823-1837.JD

Abstract

Deoiled soy lecithin is a feed additive enriched in phospholipids. Our study evaluated the effects of dietary deoiled soy lecithin supplementation on (1) milk production and composition, (2) plasma and milk fatty acid (FA) content and yield, and (3) apparent FA digestibility and absorption in lactating dairy cows fed fractionated palm fat. In a split-plot Latin square design, 16 Holstein cows (160 ± 7 days in milk; 3.6 ± 1.2 parity) were randomly allocated to a main plot receiving a corn silage and alfalfa haylage-based diet with palm fat containing either moderate (MPA) or high palmitic acid (HPA) content at 1.75% of ration dry matter (72 or 99% palmitic acid, respectively; n = 8/palm fat diet). On each palm fat diet, deoiled soy lecithin was top-dressed at 0, 0.12, 0.24, or 0.36% of ration dry matter in a replicated 4 × 4 Latin square design. Following a 14-d covariate period, lecithin supplementation spanned 14 d, with milk and blood collected during the final 3 d. Milk composition and pooled plasma markers were measured. The statistical model included the fixed effects of palm fat type, lecithin dose, period, and the interaction between palm fat type and lecithin dose. The random effect of cow nested within palm fat group was also included. Lecithin linearly decreased dry matter intake. In cows fed HPA, lecithin feeding reduced milk fat content and tended to decrease milk fat yield. Although no changes in milk yield were observed, a quadratic reduction in 3.5% fat-corrected milk was observed with increasing lecithin dose. Lecithin linearly increased energy-corrected milk efficiency in cows fed MPA. Lecithin supplementation also decreased milk urea nitrogen, relative to unsupplemented cows. The proportion of 16-carbon FA in milk fat decreased linearly with lecithin dose, whereas 18-carbon FA increased linearly. Lecithin reduced de novo FA (<16-carbon) content and tended to increase preformed FA (>16-carbon) content in a linear manner. Compared with MPA, HPA diets reduced apparent total and 16-carbon FA digestibility and absorption. Deoiled soy lecithin feeding did not modify FA digestibility or absorption. Our observations suggest that soy lecithin feeding modifies rumen digestion to reduce dry matter intake and change milk composition.

Authors+Show Affiliations

Department of Animal Science, Cornell University, Ithaca, NY 14853.Department of Animal Science, Cornell University, Ithaca, NY 14853.Department of Animal Science, Cornell University, Ithaca, NY 14853.Department of Animal Science, Cornell University, Ithaca, NY 14853.Department of Animal Science, Cornell University, Ithaca, NY 14853.Département des Sciences Animales, Université Laval, Québec G1V 0A6.Department of Animal Science, Cornell University, Ithaca, NY 14853. Electronic address: jwm43@cornell.edu.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

33246607

Citation

Fontoura, A B P., et al. "Effects of Dietary Deoiled Soy Lecithin Supplementation On Milk Production and Fatty Acid Digestibility in Holstein Dairy Cows." Journal of Dairy Science, vol. 104, no. 2, 2021, pp. 1823-1837.
Fontoura ABP, Rico JE, Davis AN, et al. Effects of dietary deoiled soy lecithin supplementation on milk production and fatty acid digestibility in Holstein dairy cows. J Dairy Sci. 2021;104(2):1823-1837.
Fontoura, A. B. P., Rico, J. E., Davis, A. N., Myers, W. A., Tate, B. N., Gervais, R., & McFadden, J. W. (2021). Effects of dietary deoiled soy lecithin supplementation on milk production and fatty acid digestibility in Holstein dairy cows. Journal of Dairy Science, 104(2), 1823-1837. https://doi.org/10.3168/jds.2020-18797
Fontoura ABP, et al. Effects of Dietary Deoiled Soy Lecithin Supplementation On Milk Production and Fatty Acid Digestibility in Holstein Dairy Cows. J Dairy Sci. 2021;104(2):1823-1837. PubMed PMID: 33246607.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of dietary deoiled soy lecithin supplementation on milk production and fatty acid digestibility in Holstein dairy cows. AU - Fontoura,A B P, AU - Rico,J E, AU - Davis,A N, AU - Myers,W A, AU - Tate,B N, AU - Gervais,R, AU - McFadden,J W, Y1 - 2020/11/25/ PY - 2020/04/27/received PY - 2020/08/24/accepted PY - 2020/11/29/pubmed PY - 2020/11/29/medline PY - 2020/11/28/entrez KW - fatty acid digestibility KW - lactating cow KW - lecithin SP - 1823 EP - 1837 JF - Journal of dairy science JO - J Dairy Sci VL - 104 IS - 2 N2 - Deoiled soy lecithin is a feed additive enriched in phospholipids. Our study evaluated the effects of dietary deoiled soy lecithin supplementation on (1) milk production and composition, (2) plasma and milk fatty acid (FA) content and yield, and (3) apparent FA digestibility and absorption in lactating dairy cows fed fractionated palm fat. In a split-plot Latin square design, 16 Holstein cows (160 ± 7 days in milk; 3.6 ± 1.2 parity) were randomly allocated to a main plot receiving a corn silage and alfalfa haylage-based diet with palm fat containing either moderate (MPA) or high palmitic acid (HPA) content at 1.75% of ration dry matter (72 or 99% palmitic acid, respectively; n = 8/palm fat diet). On each palm fat diet, deoiled soy lecithin was top-dressed at 0, 0.12, 0.24, or 0.36% of ration dry matter in a replicated 4 × 4 Latin square design. Following a 14-d covariate period, lecithin supplementation spanned 14 d, with milk and blood collected during the final 3 d. Milk composition and pooled plasma markers were measured. The statistical model included the fixed effects of palm fat type, lecithin dose, period, and the interaction between palm fat type and lecithin dose. The random effect of cow nested within palm fat group was also included. Lecithin linearly decreased dry matter intake. In cows fed HPA, lecithin feeding reduced milk fat content and tended to decrease milk fat yield. Although no changes in milk yield were observed, a quadratic reduction in 3.5% fat-corrected milk was observed with increasing lecithin dose. Lecithin linearly increased energy-corrected milk efficiency in cows fed MPA. Lecithin supplementation also decreased milk urea nitrogen, relative to unsupplemented cows. The proportion of 16-carbon FA in milk fat decreased linearly with lecithin dose, whereas 18-carbon FA increased linearly. Lecithin reduced de novo FA (<16-carbon) content and tended to increase preformed FA (>16-carbon) content in a linear manner. Compared with MPA, HPA diets reduced apparent total and 16-carbon FA digestibility and absorption. Deoiled soy lecithin feeding did not modify FA digestibility or absorption. Our observations suggest that soy lecithin feeding modifies rumen digestion to reduce dry matter intake and change milk composition. SN - 1525-3198 UR - https://www.unboundmedicine.com/medline/citation/33246607/Effects_of_dietary_deoiled_soy_lecithin_supplementation_on_milk_production_and_fatty_acid_digestibility_in_Holstein_dairy_cows_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0022-0302(20)30970-X DB - PRIME DP - Unbound Medicine ER -