Prediction of energy balance in a high yielding dairy herd in early lactation: model development and precision

Heuer, C; Straalen, W.M. van; Schukken, Y.H.; Dirkzwager, A.; Noordhuizen, J.P.T.M.

doi:10.1016/s0301-6226(99)00177-3

Cited by 83 publications

(78 citation statements)

References 18 publications

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“…To test if the prediction equations generated by this study were more accurate than the previously proposed method of using the ratio of milk fat-to-protein contents (FPR) as a predictor of energy balance (Heuer et al, 2000;Friggens et al, 2007), correlations between FPR and body energy status measures were tested across the entire lactation and for the 3 stages of lactation using p.m. milk samples.…”

Section: Development Of Prediction Equationsmentioning

confidence: 99%

“…In addition, it has been shown that some individual milk fatty acids can be accurately predicted using MIR spectroscopy (Soyeurt et al, 2011). Previous studies have attempted to predict energy balance using milk composition measures such as fat-to-protein ratio (Grieve et al 1986;Heuer et al, 2000;Friggens et al, 2007). Others have shown associations between milk fatty acid composition and energy balance (Stoop et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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The use of mid-infrared spectrometry to predict body energy status of Holstein cows

McParland

Banos

Wall

et al. 2011

Journal of Dairy Science

119

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Energy balance, especially in early lactation, is known to be associated with subsequent health and fertility in dairy cows. However, its inclusion in routine management decisions or breeding programs is hindered by the lack of quick, easy, and inexpensive measures of energy balance. The objective of this study was to evaluate the potential of mid-infrared (MIR) analysis of milk, routinely available from all milk samples taken as part of large-scale milk recording and milk payment operations, to predict body energy status and related traits in lactating dairy cows. The body energy status traits investigated included energy balance and body energy content. The related traits of body condition score and energy intake were also considered. Measurements on these traits along with milk MIR spectral data were available on 17 different test days from 268 cows (418 lactations) and were used to develop the prediction equations using partial least squares regression. Predictions were externally validated on different independent subsets of the data and the results averaged. The average accuracy of predicting body energy status from MIR spectral data was as high as 75% when energy balance was measured across lactation. These predictions of body energy status were considerably more accurate than predictions obtained from the sometimes proposed fat-to-protein ratio in milk. It is not known whether the prediction generated from MIR data are a better reflection of the true (unknown) energy status than the actual energy status measures used in this study. However, results indicate that the approach described may be a viable method of predicting individual cow energy status for a large scale of application.

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Section: Development Of Prediction Equationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The use of mid-infrared spectrometry to predict body energy status of Holstein cows

McParland

Banos

Wall

et al. 2011

Journal of Dairy Science

119

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“…A characteristic of this easy applicable method is that the outcome of this method may differ between observers. Moreover, Heuer et al showed that the sensitivity of this method is low: standardized body condition scoring could only detect about 25% of cows in calculated severe cNEB [49]. The origin of this low sensitivity may be that subtle changes in BCS can not be detected.…”

Section: Negative Energy Balance and Adaptation: Definition Quantifimentioning

confidence: 99%

Metabolic changes in early lactation and impaired reproductive performance in dairy cows

Jorritsma

Wensing

Kruip³

et al. 2003

Vet. Res.

204

163

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-This review addresses the suggestion that the decline in dairy reproductive performance, as increasingly observed these days, may be due to a hampered process of metabolic adaptation in early lactating cows. In our opinion, adaptation to the negative energy balance is a gradual process. Because almost all cows do adapt in the long run, it is not possible to classify animals as adapted or non-adapted. The use of risk factors is more appropriate in this case and is discussed in this review. Among them are the body condition score and its derivatives, feed intake, the calculated negative energy balance, and metabolic parameters like the plasma concentration of insulin or the triacylglycerol content in the liver. Moreover, factors that play a role in the link between declined reproductive performance and the metabolic situation of the cow during the early lactating period are discussed. Among these are insulin, insulin-like growth factors, leptin, neuropeptide Y, nonesterified fatty acids, thyroïd hormones, urea, and ammonia. fertility / dairy / periparturient metabolic adaptation / physiopathology / periparturition

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“…Para vacas alimentadas com baixa energia e proteína, a produção foi de 17,4 e 24,5 kg/ dia. Heuer et al (2000), encontraram que vacas jovens (primíparas) e velhas (>4 partos) apresentaram menor status energético do que vacas de segunda e terceira parição. Afirmaram que este fato, em vacas mais velhas, deve-se ao efeito da idade avançada dos animais, onde há diminuição metabólica, e o que ocorre em primíparas deve-se à competição por alimentos com as vacas mais velhas e/ou devido ao stress associado ao parto.…”

Section: Os Resultados De Baixo Desempenho Das Vacas Primíparas Enconunclassified

“…Clark et al (2005) encontraram correlação de -0,34 (P=0,03), entre balanço energético e idade. Portanto, um dos principais fatores associados à influência da idade e à produção de leite, é o fator energético, embora haja outros fatores como desenvolvimento da glândula mamária e nível de metabolismo (HEUER et al, 2000).…”

Section: Os Resultados De Baixo Desempenho Das Vacas Primíparas Enconunclassified

Efeito de diferentes níveis de concentrado no período pré e pós-parto sobre a produção de leite e escore corporal de vacas leiteiras

et al. 2012

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ResumoEste experimento teve como objetivo avaliar os efeitos de diferentes níveis de suplementação concentrada nos períodos pré-parto e pós-parto, sobre a produção de leite e o escore corporal de vacas leiteiras. Utilizaram-se 54 vacas em delineamento experimental inteiramente casualizado, distribuídas em esquema fatorial 3 x 2, sendo 3 tratamentos, 2 períodos e 9 repetições por tratamento. Os tratamentos compreenderam diferentes níveis de suplementação de concentrado (em base seca) nos períodos pré-parto (PRE): PRE1= 0% do PV; PRE2= 0,5% do PV; PRE3= 1,0% do PV; e no pós-parto (POS): POS1= 1kg para cada 2,5 kg de leite produzido; POS2= 1kg para cada 2,0kg de leite produzido e POS3= 1kg para cada 1,5kg de leite produzido, acima de 6 kg de leite por dia. A pesagem do leite e a avaliação de escore corporal foram realizadas a cada sete dias. Não houve diferença significativa entre os tratamentos do período PRE para produção de leite, no entanto verificou-se que o aumento na suplementação PRE melhorou a condição corporal média dos animais no período pós-parto (P<0,05). Nos tratamentos do período POS, houve efeito positivo e crescente com o aumento do nível de suplementação, sobre a produção de leite e escore corporal médio dos animais (P < 0,05). Não se observou melhora na produção de leite com o aumento da suplementação no período PRE, mas nos tratamentos POS houve maior produção de leite com o aumento da suplementação (P<0,05). Não houve correlação de tratamento pré-parto e produção de leite, mas houve correlação destes com escore corporal dos animais ao parto (r=0,66). Houve correlação de níveis de suplementação no pós-parto com escore corporal médio (0,36) e com produção de leite (0,32). Pode-se concluir que o aumento do nível de suplementação no período pré-parto melhora o escore corporal mas não a produção de leite dos animais, e o aumento de suplementação nos tratamentos pós-parto melhoram tanto o escore corporal quanto a produção de leite. Palavras-chave: Alimentação, balanço energético, bovino, pré-parto 1 Parte da dissertação de mestrado do primeiro autor. Médico Veterinário.

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Prediction of energy balance in a high yielding dairy herd in early lactation: model development and precision

Cited by 83 publications

References 18 publications

The use of mid-infrared spectrometry to predict body energy status of Holstein cows

The use of mid-infrared spectrometry to predict body energy status of Holstein cows

Metabolic changes in early lactation and impaired reproductive performance in dairy cows

Efeito de diferentes níveis de concentrado no período pré e pós-parto sobre a produção de leite e escore corporal de vacas leiteiras

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