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Does frequency of protein supplementation affect performance of cattle under grazing in tropical pastures?

Sousa, Luiz Carlos O. and Palma, Malber N. N. and Franco, Marcia O. and Detmann, Edenio (2022). Does frequency of protein supplementation affect performance of cattle under grazing in tropical pastures? Animal Feed Science and Technology. 289 , 115316
[Research article]

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Abstract

Our objective was to evaluate the effects of protein supplementation frequency on performance and voluntary intake of cattle under grazing in tropical pastures by using a meta-analytical approach. The dataset used to evaluate the voluntary intake was compiled from 18 experiments carried out in Brazil between 2009 and 2021, totaling 75 treatment means. In order to evaluate the animal performance, treatment means were collected from 19 experiments carried out in Brazil between 2003 and 2018, totaling 69 treatment means. The data were analyzed using meta-analysis techniques, considering the random effect of the experiments on the model parameters. There was no effect of supplementation (P > 0.11) or supplementation frequency (P > 0.18) on forage intake and dietary digested organic matter content (DOM). On the other hand, supplementation increased (P 0.84). The ADG increased linearly (P 0.05) among supplementation frequencies. The additional weight gain (AWG) caused by supplementation decreased as forage CP increased and became null at 150 g CP/kg dry matter. There was a quadratic pattern (P 0.05). Maximal responses occur when 5.0 g of supplement and 1.14 g of supplemental CP per kg BW were provided. Reducing protein supplementation frequency down to thrice a week does not affect voluntary intake and performance of cattle under grazing in tropical pastures. There is a positive response to protein supplementation on animal performance even with medium to high-quality forages. However, that response decreases as forage CP increases and becomes null at 150 CP/kg dry matter.

Authors/Creators:Sousa, Luiz Carlos O. and Palma, Malber N. N. and Franco, Marcia O. and Detmann, Edenio
Title:Does frequency of protein supplementation affect performance of cattle under grazing in tropical pastures?
Series Name/Journal:Animal Feed Science and Technology
Year of publishing :2022
Volume:289
Article number:115316
Number of Pages:12
Publisher:ELSEVIER
ISSN:0377-8401
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 402 Animal and Dairy Science > Animal and Dairy Science.
Keywords:Average daily gain, N status, Protein supplementation
URN:NBN:urn:nbn:se:slu:epsilon-p-118020
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-118020
Additional ID:
Type of IDID
DOI10.1016/j.anifeedsci.2022.115316
Web of Science (WoS)000806500800007
ID Code:28586
Faculty:VH - Faculty of Veterinary Medicine and Animal Science
Department:(VH) > Dept. of Animal Nutrition and Management
Deposited By: SLUpub Connector
Deposited On:26 Aug 2022 09:30
Metadata Last Modified:26 Aug 2022 09:31

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