Estimation of daily milk yield of Nellore cows grazing tropical pastures

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dc.creatorDaniel Mageste de Almeida
dc.creatorManuela Acevedo Cardozo
dc.creatorRoman Maza Ortega
dc.creatorJavier Enrique Garces Cardenas
dc.creatorVirginia Lucia Neves Brandão
dc.creatorMário Fonseca Paulino
dc.creatorMarcos Inácio Marcondes
dc.creatorLuciana Navajas Rennó
dc.creatorLivia Vieira de Barros
dc.creatorCarla Heloísa Avelino Cabral
dc.creatorLeandro Soares Martins
dc.creatorDavid Esteban Contreras Marquez
dc.creatorFelipe Vélez Saldarriaga
dc.creatorFaider Alberto Castaño Villadiego
dc.date.accessioned2023-05-05T23:25:38Z
dc.date.accessioned2025-09-09T01:13:04Z
dc.date.available2023-05-05T23:25:38Z
dc.date.issued2018
dc.identifier.doihttps://doi.org/10.1007/s11250-018-1617-4
dc.identifier.issn0049-4747
dc.identifier.urihttps://hdl.handle.net/1843/52890
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofTropical Animal Health and Production
dc.rightsAcesso Aberto
dc.subjectProdução animal
dc.subjectBovino de corte
dc.subjectLeite - Produção
dc.subjectRuminant nutrition
dc.subject.otherAnimal production
dc.subject.otherBeef cattle
dc.subject.otherMilk production
dc.subject.otherRuminant nutrition
dc.subject.otherSupplementation
dc.titleEstimation of daily milk yield of Nellore cows grazing tropical pastures
dc.typeArtigo de periódico
local.citation.epage1777
local.citation.spage1771
local.citation.volume50
local.description.resumoBeef cows’ milk yield is typically determined by measuring milk yield once daily and then doubling this value to estimate daily production. However, it is not known whether this is accurate. Thus, we aimed to determine the association between morning and afternoon milk yield in grazing Nellore cows. Eighty Nellore cows were used, with initial weight of 516.0 ± 1.0 kg. The experiment was a completely randomized factorial scheme, with 20 replications and four treatments (i.e., + or − pre-partum supplementation in combination with + or − post-partum supplementation): PRMM—1 kg of supplement/cow/day for 90 days pre-partum; MMPS—1 kg of supplement/cow/day for 90 days post-partum; PRPS—1 kg of supplement/cow/day for 90 days pre-partum and 90 days post-partum; and MM—only mineral mix ad libitum during pre- and post-partum. Milk was sampled on days 45, 135, and 225 post-partum (early, middle, and late lactation, respectively). No effects were observed of pre- and postpartum supplementation on milk yield (P > 0.05). The afternoon/morning proportion of 0.45 in the early third of lactation was higher than other stages, which had a proportion of 0.41 (P < 0.05). Post-partum supplementation increased milk protein in the morning and afternoon milking (P < 0.05). There was also no effect of pre- and post-partum supplementation on afternoonmorning proportion other milk components (P > 0.05). We conclude that estimating daily milk production of grazing beef cattle by multiplying a once daily milking amount times two is not accurate. Under the conditions of this study, proportion of total daily production represented by the ratio of afternoon/morning milking was 0.45 in early lactation (first third) and 0.41 in mid- and late lactation.
local.publisher.countryBrasil
local.publisher.departmentICA - INSTITUTO DE CIÊNCIAS AGRÁRIAS
local.publisher.initialsUFMG
local.url.externahttps://link.springer.com/article/10.1007/s11250-018-1617-4

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