Feeding dairy cows for decreased ammonia emission

Frank, Birgit; Persson, Maurits; Gustafsson, G.

doi:10.1016/s0301-6226(02)00021-0

Cited by 49 publications

(24 citation statements)

References 3 publications

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“…Furthermore, linseed improves the nutritional value of milk fat by decreasing milk SFA content and increasing CLA and α-linolenic acid (ALA; Focant et al, 1998;Chilliard et al, 2009). In cows in mid lactation, a significant decrease of urinary N excretion can be achieved by reducing dietary CP from 17 to 19% to 14 to 16% of DM without effect (Leonardi et al, 2003;Colmenero and Broderick, 2006;1145Mutsvangwa et al, 2016 or with very small effects (Broderick, 2003) on milk and protein yield, resulting in an overall improvement in milk N efficiency (Castillo et al, 2000;Frank et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

The effect of oak tannin (Quercus robur) and hops (Humulus lupulus) on dietary nitrogen efficiency, methane emission, and milk fatty acid composition of dairy cows fed a low-protein diet including linseed

Focant

Froidmont

Archambeau

et al. 2019

Journal of Dairy Science

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The objective of this study was to test the effects of inclusion of hop pellets (HP) and oak tannin extracts (OT) alone or in combination on N efficiency, methane (CH 4 ) emission, and milk production and composition in 2 experiments with dairy cows fed low-N rations supplemented with linseed. In both experiments, 6 lactating Holstein cows were assigned to 3 dietary treatments in a 3 × 3 duplicated Latin square design (21-d periods). Cows were fed a total mixed ration at a restricted level to meet their nutrient requirements. In experiment 1, 169 g dry matter (DM) of OT or 56 g DM of HP was included separately in the control diet (C1). In experiment 2, the additives were included together (OT-HP) in the control diet (C2) similar to C1. Diet C2 was compared with a control without linseed (C0). In experiment 1, the supplementation of the control diet with OT decreased urinary N excretion by 12%. In experiment 2, the combination of OT and HP decreased urinary N by 7%. Oak tannin extracts and HP alone or in combination did not influence the daily enteric CH 4 production of cows. Cows fed diet C0 produced 17% more enteric CH 4 daily than those fed diet C2. Intake of diet C2, which contained 6.7% extruded linseed on a DM basis (experiment 2), decreased the sum of 6:0 to 14:0 fatty acids (−16%) and palmitic acid (−26%) and increased the stearic acid (+50%), oleic acid (+36%), vaccenic acid (trans-11 18:1; +285%), rumenic acid (cis-9,trans-11 18:2; +235%), and α-linolenic acid (+100%) in milk fat. The supplementation of diet C2 with the OT-HP mixture further improved the milk's fatty acid composition. Intake of the OT alone increased α-linolenic acid by 17.7% (experiment 1). The results of this study show that at the economically acceptable dose we tested, hops had no effect on urinary N excretion, CH 4 emission, milk production, and milk composition. By contrast, supplementation of diets with oak tannin extract can be considered for reducing urinary N excretion. The combination of oak tannin and hops had no more effect than oak tannin alone except on the milk fatty acid profile, which was favorably influenced from a nutritional point of view.

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Section: Introductionmentioning

confidence: 99%

The effect of oak tannin (Quercus robur) and hops (Humulus lupulus) on dietary nitrogen efficiency, methane emission, and milk fatty acid composition of dairy cows fed a low-protein diet including linseed

Focant

Froidmont

Archambeau

et al. 2019

Journal of Dairy Science

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“…Reducing dietary CP content not only reduced total N excretion but also resulted in a greater proportion of the N excretion in urine (Misselbrook et al, 2005). Frank et al (2002) reported that NH 3 emissions from dairy cattle manure were reduced by two‐thirds when lowering diet CP from 19 to 14%, with no negative effects on milk yield (MY) or composition. Johnson and Johnson (1995) found that highly digestible diets yielded lower CH 4 emissions than poor‐quality lower digestible diets; thus, dietary modification may provide a mechanism for reducing CH 4 emissions from livestock operations.…”

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confidence: 99%

Gas Emissions from Dairy Cows Fed Typical Diets of Midwest, South, and West Regions of the United States

et al. 2012

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Gas emissions were determined for dairy cows fed three diets formulated to represent feed ingredients typical of the Midwest, South, or West regions of the United States. Dairy cows were housed and monitored in 12 environmentally controlled rooms (4 cows diet). Two experiments were performed, representing two lactation stages (initial days in milk were 115 ± 39 d in Stage 1 and 216 ± 48 d in Stage 2). The results demonstrated that the combination of different dietary ingredients resulted in different gas emissions while maintaining similar dry matter intake (DMI) and milk yield (MY). Diet effect on ammonia (NH) emissions was more prominent in Stage 1. During Stage 1, cows fed the Midwest diet had the highest daily NH emission, corresponding to the highest crude protein (CP) concentration among the three regions. The differences in NH emissions (39.0%) were much larger than the percent difference in CP concentrations between diets (6.8%). Differences in N intake, N excretion, or milk urea N alone may not serve as a strong indicator of the potential to reduce NH emissions. Lower emissions of methane (CH) per unit DMI or per unit MY were observed for cows offered the South diet during Stage 1 as compared with that from cows offered the Midwest or West diets. No diet effect was observed for hydrogen sulfide (HS) emission per unit S intake, nor for nitrous oxide (NO) emission. The measured NH and CH emissions were comparable, but the NO emissions were much higher than those reported for tie-stall dairy barns in the literature.

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“…Esta asincronía entre las concentraciones de amoníaco y la disponibilidad de energía deriva en una baja eficiencia del uso de las proteínas dietarias por las bacterias ruminales (Keim y Anrique, 2011;Gehman et al, 2006;Bach et al, 2005) ya que el exceso de amoníaco se difunde al sistema circulatorio y es transportado al hígado donde debe ser convertido en urea, lo que implica un gasto energético adicional y una mayor concentración de urea en leche que afecta a su calidad (Keim y Anrique, 2011;Frank et al, 2002;Alvarez et al, 2006). La adición a la dieta, de mezclas de diferentes granos de cereales, ha demostrado ser efectiva para mejorar la eficiencia de utilización del amoníaco generado, ya que aportan tanto energía como cadenas carbonadas en diferentes tiempos dependiendo de la tasa de degradación que posean (Kolver y Muller, 1998;Gehman et al, 2006), por ello, la mezcla de dos o más cereales debería traducirse en mayor captación de amoníaco por las bacterias ruminales y por lo tanto, mayor tasa de síntesis proteica microbial.…”

Section: Introductionunclassified

Efectos del tipo de carbohidrato sobre la captura de nitrógeno y producción de leche bovina

et al. 2013

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Feeding dairy cows for decreased ammonia emission

Cited by 49 publications

References 3 publications

The effect of oak tannin (Quercus robur) and hops (Humulus lupulus) on dietary nitrogen efficiency, methane emission, and milk fatty acid composition of dairy cows fed a low-protein diet including linseed

The effect of oak tannin (Quercus robur) and hops (Humulus lupulus) on dietary nitrogen efficiency, methane emission, and milk fatty acid composition of dairy cows fed a low-protein diet including linseed

Gas Emissions from Dairy Cows Fed Typical Diets of Midwest, South, and West Regions of the United States

Efectos del tipo de carbohidrato sobre la captura de nitrógeno y producción de leche bovina

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