Influence of different fat supplements on digestibility and ruminal digestion in cows

Doreau, M.; Chilliard, Yves; Bauchart, Dominique; Michalet-Doreau, B.; Fléchet, Jeanne; Lefaivre, Renée; Legay, Christiane; Meyer, Marinett; Ollier, A.

doi:10.1051/animres:19910103

Cited by 12 publications

(8 citation statements)

References 10 publications

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“…Hy'drogenation oJ'Jatty ucids of rhe dier (%1 C18:2 (n'6) C18:3 (n-3) H1-drogenotion of fatty acids of rapeseetl oil (%) Cl8:2 (n-6) Cl8:3 (n 3) 1981;Doreau et al 199lb), but the decrease in digestibility between diets S and SO is lower than observed in our previous e\pcriment (Doreau et al 1991a). …”

Section: In Sacco Degradationmentioning

confidence: 59%

“…but only trends, probably because the mean effect of fat on fiber digestion was low. However, recent data obtained during two different experiments carried out in our laboratory (Doreau et al 1991a, b) have shown that, for the same amount and the same source of lipids, with the same level of calcium in the diet, the decrease in fiber digestron was higher with corn silage-based diets than with hay-based diets. In thg present experiment.…”

Section: Canadtan Lournalmentioning

confidence: 75%

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Effect of lipid supply on in vivo digestion in cows: Comparison of hay and corn silage diets

Salem¹,

Krzemiński²,

Ferlay³

et al. 1993

Can. J. Anim. Sci.

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BenSalem,H., Krzeminski,R.,Ferlay,A.andDoreau,M. 1993.Effectof lipidsupplyoninvivo digestion in cows: Comparison of hay'and corn silage diets. Can. J. Anim. Sci. 73: 547-557. Four Holstein x Friesian cows with rumen and duodenal cannulae were assigned to a 4 x 4 Latin square design consisting offour experimental diets diff'ering in the nature offbrage and the presence or absence of rapeseed oil supplement. Dietary treatments werc composed of 60% grassland hay and 40% production concentrate (diet H), and of65% corn silage, 28% production concentrate andi% soybean meal (diet S). Each diet was also supplied w\th1% rapeseed oil. These supplemented diets are designated respectively HO and SO. Digestibility of organic matter was 69.0, 6'1 .5,73.6 and 70.0% for diets H, HO, S and SO, respectively. The differences were mainly due to variations in NDF digestibility: 55.0, 50.4, 56.9 and 46.9% for diets H, HO, S and SO, respectively. These results are consistent with variations in VFA concentration and composition. However, dif'ferenccs among diets in in situ cellulose degradation were lower than expected. Starch and nitrogen degradation measured in situ, and ruminal outflow rate of liquid and solids were not modified by lipid supply. Hydrogenation of linoleic and linolenic acids was high (mean 88.9 and 89.5%, respectively) and did not depend on the diet.

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Section: In Sacco Degradationmentioning

confidence: 59%

Section: Canadtan Lournalmentioning

confidence: 75%

Effect of lipid supply on in vivo digestion in cows: Comparison of hay and corn silage diets

Salem¹,

Krzemiński²,

Ferlay³

et al. 1993

Can. J. Anim. Sci.

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“…Fat supplementation has been proposed to reduce CH 4 emission [33,34], but the microbiological mechanism was not well known. Increasing fat content may decrease digestibility [35] and increase energy intake level. The effect of fat content in diets on CH 4 emission could be related to its effects on feed digestibility and energy intake level of cattle.…”

Section: Other Factors That Affect Ch 4 Emissionmentioning

confidence: 99%

Ammonia and Methane Emission Factors from Cattle Operations Expressed as Losses of Dietary Nutrients or Energy

Liu

Murphy

et al. 2017

Agriculture

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Abstract:The objective of this study was to conduct a systematic review of published literature on ammonia (NH 3 ) and enteric methane (CH 4 ) emissions from beef and dairy cattle operations to obtain statistically representative emission factors based on dietary intakes of nutrients or energy, and to identify major causes of emission variations. NH 3 emissions from lagoon or other manure storage facilities were not included in this review. The NH 3 and CH 4 emission rates, expressed as a percentage losses of dietary nutrients or energy, demonstrated much less variation compared with emission rates expressed in g/animal/day. Air temperature and dietary crude protein (CP) content were identified as two major factors that can affect NH 3 emission rates in addition to farm type. Feed digestibility and energy intake were identified as two major factors that can affect CH 4 emission rates expressed as a percentage losses of dietary energy. Generally, increasing productivity and feed efficiency represented the greatest opportunity for mitigating NH 3 or CH 4 emissions per unit of livestock product. Expressing CH 4 loss on a digestible energy basis rather than a gross energy intake basis can better represent the large variation among diets and the effects of varying dietary emission mitigation strategies.

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“…Também têm potencial para melhorar a eficiência de utilização da energia, já que os ácidos graxos de origem dietética pré-formados são incorporados diretamente na gordura do leite sem a perda por incremento calórico associada à sua síntese. Há então, economia de energia para outras funções produtivas da glândula mamária, melhorando a eficiência na produção de ATP a partir de ácidos graxos de cadeia longa em comparação ao acetato, fonte energética fundamental nos ruminantes (Doreau et al, 1991;Chilliard, 1993;Garnsworthy, 1997). Na escolha da gordura a ser utilizada, fatores como preço e características da mesma devem ser contemplados.…”

Section: Introductionunclassified

Efeito do óleo de arroz na ração sobre a produção e composição química do leite de ovelhas Corriedale

et al. 2012

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Influence of different fat supplements on digestibility and ruminal digestion in cows

Cited by 12 publications

References 10 publications

Effect of lipid supply on in vivo digestion in cows: Comparison of hay and corn silage diets

Effect of lipid supply on in vivo digestion in cows: Comparison of hay and corn silage diets

Ammonia and Methane Emission Factors from Cattle Operations Expressed as Losses of Dietary Nutrients or Energy

Efeito do óleo de arroz na ração sobre a produção e composição química do leite de ovelhas Corriedale

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