2014
DOI: 10.1590/1807-1929/agriambi.v18n10p1072-1078
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Climatização na pré-ordenha de vacas Girolando no inverno do semiárido

Abstract: Propôs-se, neste trabalho, avaliar tempos de exposição dos animais à climatização no curral de espera sobre os índices de conforto, variáveis fisiológicas e produção de leite de vacas da raça Girolando, no inverno do semiárido pernambucano. Foram utilizadas 16 vacas com composição genética de 7/8 Holandês-Gir, divididas em quatro grupos, submetidos a três tempos de climatização 10, 20, 30 min e controle (sem climatização) adotando-se delineamento em quadrado latino 4 x 4. Para determinação da eficiência térmic… Show more

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Cited by 6 publications
(4 citation statements)
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“…There was a significant difference (p < 0.01) between the two groups (Table 1) and between the time of measurement of the environmental variables: Tdb, RH and THI However, in both cases, the mean valus observed were higher than the range considered favorable for the management of dairy cattle, which is between 50% and 70% (Almeida Neto et al, 2014). Thus, regardless of the evaluated environment, the measured RH may trigger stress conditions in the animals, since high values of relative humidity impair thermolysis (Silva, 2000;Pereira et al, 2005).…”
Section: Resultsmentioning
confidence: 96%
“…There was a significant difference (p < 0.01) between the two groups (Table 1) and between the time of measurement of the environmental variables: Tdb, RH and THI However, in both cases, the mean valus observed were higher than the range considered favorable for the management of dairy cattle, which is between 50% and 70% (Almeida Neto et al, 2014). Thus, regardless of the evaluated environment, the measured RH may trigger stress conditions in the animals, since high values of relative humidity impair thermolysis (Silva, 2000;Pereira et al, 2005).…”
Section: Resultsmentioning
confidence: 96%
“…Além disso, um outro fator que corrobora com a utilização de animais mestiços no semiárido, diz respeito ao fato de serem mais rústicos e de menor custo de mantença, quando comparados a raças mais especializadas na produção de leite, como as europeias. De acordo com ALMEIDA NETO et al (2014), o efeito das condições climáticas semiáridas sobre as raças, pode ser atenuado com a utilização de animais de raças zebuínas, pois são mais adaptados e resilientes, no entanto, menos produtivos quando comparado aos europeus, o que torna o cruzamento uma excelente alternativa, visando-se o aumento da produtividade com adaptabilidade dos rebanhos na maioria dos sistemas de produção adotados.…”
Section: Resultsunclassified
“…The same can be observed for the winter season (Figure 2A and 2B), in which the EACS influenced the composition of milk (Table 1). However, Almeida Neto, Pandorfi, ,Almeida, and Guiselini (2014), using classical statistics, found that different times of evaporative adiabatic cooling in winter, in a semi-arid region, did not lead to changes in milk composition. In view of these findings, it is observed that the application of multivariate analysis by PCs made it possible to extract results not previously observed based on classical/conventional statistics.…”
Section: Morning Periodmentioning
confidence: 95%