Mesquite (prosopis juliflora) extract as a phytogenic additive for sheep finished on pasture in the semiarid region

Authors: FERRER, JULIANA - Federal Rural University Of Pernambuco; DA CUNHA, MARCIO - Federal Rural University Of Pernambuco; DOS SANTOS, MERCIA - Federal Rural University Of Pernambuco; TORRES, THAYSA - Federal Rural University Of Pernambuco; DA SILVA, JOSE - Federal Rural University Of Pernambuco; VERAS, ROBSON - Federal Rural University Of Pernambuco; DA SILVA, DANIEL - Federal Rural University Of Pernambuco; DA SILVA, ALISSON - Federal Rural University Of Pernambuco; QUEIROZ, LUANA - University Of Florida; DE SOUZA, EVARISTO - Federal Rural University Of Pernambuco; FERRER, MOISES - Federal Rural University Of Pernambuco; NETO, ELIAS - Federal Rural University Of Pernambuco; Jaramillo, David

Submitted to: Chilean Journal of Agricultural Research
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 10/14/2020
Publication Date: 1/1/2021
Citation: Ferrer, J., Da Cunha, M., Dos Santos, M., Torres, T., Da Silva, J., Veras, R., Da Silva, D., Da Silva, A., Queiroz, L., Ferrer, M., Neto, E., Jaramillo, D.M., De Souza, E. 2021. Mesquite (prosopis juliflora) extract as a phytogenic additive for sheep finished on pasture in the semiarid region. Chilean Journal of Agricultural Research. https://doi.org/10.4067/S0718-58392021000100014.
DOI: https://doi.org/10.4067/S0718-58392021000100014

Interpretive Summary: Phytogenic additives are organic molecules that also improve ruminal fermentation, turning the supplemented individuals into more productive animals, without damage the population welfare. The objective of this study was to evaluate the effects of mesquite (Prosopis juliflora [Sw.] DC.) extract as phytogenic additive for sheep finished on pasture in the Brazilian Northeast semiarid region. Twenty-four intact lambs (Santa Ines × Dorper F1 crossbred) were used, with an initial body weight of 23.00 ± 1.83 kg. The experiment was carried out in a complete randomized design with four treatments and six replicates. Treatments consisted of four diets: Pasture and no supplementation; grazing pasture and phytogenic additive; pasture, supplementation with Tifton 85 hay, and concentrate; and pasture, phytogenic additive, and supplementation with Tifton 85 hay and concentrate. Prior to supplementation, animals received the phytogenic additive according to treatment. There were nonsignificant differences for nutrient intake and behavior patterns (P > 0.05). However, additive intake derived from mesquite provided an increase (P < 0.05) in digestibility (14.40% total digestible nutrients), N balance (27.12% retained N:ingested N) and performance (8.82% final body weight, 21.81% total weight gain, and 30.81% average daily gain) compared to animals consuming only pasture in rainy period. Thus, the use of mesquite extract as phytogenic additive is recommended for sheep finished on pasture in the Brazilian semiarid region.

Technical Abstract: Phytogenic additives are organic molecules that also improve ruminal fermentation, turning the supplemented individuals into more productive animals, without damage the population welfare. The objective of this study was to evaluate the effects of mesquite (Prosopis juliflora [Sw.] DC.) extract as phytogenic additive for sheep finished on pasture in the Brazilian Northeast semiarid region. Twenty-four intact lambs (Santa Ines × Dorper F1 crossbred) were used, with an initial body weight of 23.00 ± 1.83 kg. The experiment was carried out in a complete randomized design with four treatments and six replicates. Treatments consisted of four diets: Pasture and no supplementation; grazing pasture and phytogenic additive; pasture, supplementation with Tifton 85 hay, and concentrate; and pasture, phytogenic additive, and supplementation with Tifton 85 hay and concentrate. Prior to supplementation, animals received the phytogenic additive according to treatment. There were nonsignificant differences for nutrient intake and behavior patterns (P > 0.05). However, additive intake derived from mesquite provided an increase (P < 0.05) in digestibility (14.40% total digestible nutrients), N balance (27.12% retained N:ingested N) and performance (8.82% final body weight, 21.81% total weight gain, and 30.81% average daily gain) compared to animals consuming only pasture in rainy period. Thus, the use of mesquite extract as phytogenic additive is recommended for sheep finished on pasture in the Brazilian semiarid region.