Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Effect of Postbiotic Supplementation on Nutrient Digestibility and Milk Yield During the Transition Period in Dairy Cows

Version 1 : Received: 8 July 2024 / Approved: 9 July 2024 / Online: 9 July 2024 (10:45:50 CEST)

How to cite: Vicente, F.; Campo-Celada, M.; Menéndez-Miranda, M.; García-Rodríguez, J.; Martínez-Fernández, A. Effect of Postbiotic Supplementation on Nutrient Digestibility and Milk Yield During the Transition Period in Dairy Cows. Preprints 2024, 2024070736. https://doi.org/10.20944/preprints202407.0736.v1 Vicente, F.; Campo-Celada, M.; Menéndez-Miranda, M.; García-Rodríguez, J.; Martínez-Fernández, A. Effect of Postbiotic Supplementation on Nutrient Digestibility and Milk Yield During the Transition Period in Dairy Cows. Preprints 2024, 2024070736. https://doi.org/10.20944/preprints202407.0736.v1

Abstract

The metabolites secreted by probiotics or released after their lysis are called postbiotics. They provide physiological benefits to the host, preventing the colonisation of pathogens by improving the intestinal environment for beneficial commensal bacteria, which reduces the incidence of digestive disorders and improve the immune system. The aim of this work was to evaluate the addition of postbiotics to dairy cow rations during the transition period on nutrient digestibility, composition, and milk yield. The effects of two postbiotics were evaluated in twelve Friesian cows from 30 days before calving to two months of lactation. The animals were randomly allocated to the treatments control (CT) and supplemented with postbiotics (PC and PR). Feeding was ad libitum with 60/40 of forage/concentrate ratio. Daily feed intake and milk production were recorded individually throughout the study. Two digestibility balances were performed, one before parturition and one after parturition. Colostrum was sampled at first milking and milk was sampled weekly. Data were analysed using a mixed mode in R software. The results suggest that postbiotic supplementation in late gestation and early lactation increase the voluntary intake of dry matter, especially in the PR treatment, with higher apparent total tract digestibility of dry matter, organic matter and neutral detergent fiber. Both treatments including postbiotics induced an increase in colostral immunoglobulin concentration. Milk production of cows receiving the PC treatment was the highest, with high fat and protein yields and a higher persistence of the production curve throughout the lactation.

Keywords

postbiotic; dairy cow; voluntary intake; digestibility; immunoglobulin; milk yield

Subject

Biology and Life Sciences, Animal Science, Veterinary Science and Zoology

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