Cornell University researchers delivered two abstracts that investigated the effects of feeding rumen-protected methionine and calcium salts of fatty acids enriched with or without C20:5 and C22:6 (n3FA).
For the studies, 79 multiparous Holstein cows were assigned to one of four treatments: (1) methionine unsupplemented with calcium salts of palm oil not enriched in n3FA, (2) methionine supplemented but without n3FA supplement, (3) methionine unsupplemented but with calcium salts of fatty acids enriched in n3FA, or (4) methionine supplemented with n3FA. Treatments were fed from 4 weeks prior to expected calving through week 4 of lactation.
Looking at milk production, the Cornell researchers found that yields of energy-corrected milk (ECM) and milk fat, protein and lactose yields and lactose percentage were greater in cows provided n3FA, while fat-corrected milk tended to be greater. Milk protein percentage was greater and milk fat percentage tended to be greater in cows fed supplemented methionine and n3FA compared to other groups. Feeding RP-methionine together with n3FAs improved ECM by 5.5 kg per day vs the non-supplemented control.
In an accompanying poster, the researchers examined the liver function results of the same cows. Postpartum liver functionality index values (plasma bilirubin, serum cholesterol, and serum albumin) tended to be greater for cows supplemented with methionine and n3FA relative to the other groups, leading the researchers to conclude that feeding transition cows RP-methionine and calcium salts enriched in n3FA also improves liver function.
Based on 2022 American Dairy Science Association (ADSA) abstracts:
1244 Effects of feeding rumen-protected methionine and calcium salts enriched in omega-3 fatty acids on lactation in periparturient dairy cows.
2280T Effects of feeding rumen-protected methionine and calcium salts enriched in omega-3 fatty acids on measures of liver function in periparturient cows.
Features Tanya France, MS PhD Candidate at the Cornell University, Ithaca, NY. Dr. Brian Sloan, Global Director of Ruminant Amino Acids and Protected Nutrient Business, Adisseo. Dr. Daniel Luchini, Head of Ruminant R&I, Adisseo.
To view abstracts, go to: https://www.adisseo.com/en/products/smartline/smart-science-series-ruminant-videos-and-podcasts/
Cornell University researchers delivered two abstracts that investigated the effects of feeding rumen-protected methionine and calcium salts of fatty acids enriched with or without C20:5 and C22:6 (n3FA).
For the studies, 79 multiparous Holstein cows were assigned to one of four treatments: (1) methionine unsupplemented with calcium salts of palm oil not enriched in n3FA, (2) methionine supplemented but without n3FA supplement, (3) methionine unsupplemented but with calcium salts of fatty acids enriched in n3FA, or (4) methionine supplemented with n3FA. Treatments were fed from 4 weeks prior to expected calving through week 4 of lactation.
Looking at milk production, the Cornell researchers found that yields of energy-corrected milk (ECM) and milk fat, protein and lactose yields and lactose percentage were greater in cows provided n3FA, while fat-corrected milk tended to be greater. Milk protein percentage was greater and milk fat percentage tended to be greater in cows fed supplemented methionine and n3FA compared to other groups. Feeding RP-methionine together with n3FAs improved ECM by 5.5 kg per day vs the non-supplemented control.
In an accompanying poster, the researchers examined the liver function results of the same cows. Postpartum liver functionality index values (plasma bilirubin, serum cholesterol, and serum albumin) tended to be greater for cows supplemented with methionine and n3FA relative to the other groups, leading the researchers to conclude that feeding transition cows RP-methionine and calcium salts enriched in n3FA also improves liver function.
Based on 2022 American Dairy Science Association (ADSA) abstracts:
1244 Effects of feeding rumen-protected methionine and calcium salts enriched in omega-3 fatty acids on lactation in periparturient dairy cows.
2280T Effects of feeding rumen-protected methionine and calcium salts enriched in omega-3 fatty acids on measures of liver function in periparturient cows.
Features Tanya France, MS PhD Candidate at the Cornell University, Ithaca, NY. Dr. Brian Sloan, Global Director of Ruminant Amino Acids and Protected Nutrient Business, Adisseo. Dr. Daniel Luchini, Head of Ruminant R&I, Adisseo.
To view abstracts, go to: https://www.adisseo.com/en/products/smartline/smart-science-series-ruminant-videos-and-podcasts/