Effect of Three Supplemental Fat Sources on Lactation and Digestion in Dairy Cows

Wu, Zhiguo; Huber, John; Sleiman, F. T.; Simas, J M C; Chen, K.H.; Chan, S.C.; Fontes, Carlos Augusto de Alencar

doi:10.3168/jds.s0022-0302(93)77695-x

Cited by 52 publications

(53 citation statements)

References 21 publications

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“…Our results concur with those of Wu et al (1993) and Bu et al (2007) in cows. Other studies, using saturated or protected fats (Grummer, 1991;Palmquist and Beaulieu, 1993, in cows;Pérez Alba et al, 1997;Gargouri et al, 2006, in sheep), report an increase in the percentage of milk fat.…”

Section: Discussionsupporting

confidence: 83%

“…These authors conclude that further investigation of the mechanisms that increase milk production is needed. Wu et al (1993) compared a control ration, without added fat, to rations containing 2.5% saturated fat of different kinds in dairy cattle. These authors did not observe differences in DM intake, but did report greater milk production with the hydrogenated fat supplement.…”

Section: Discussionmentioning

confidence: 99%

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Effects of dietary sources of vegetable fats on performance of dairy ewes and conjugated linoleic acid (CLA) in milk

Castro

Manso

Jimeno

et al. 2009

Small Ruminant Research

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ARTICLE INFO ABSTRACT Keywords:Vegetable fats Milk performance Milk CLA Dairy eweTwo experiments were carried out to study the effects of supplementing the ration of lactating ewes with vegetable fats (sunflower oil, SO or hydrogenated palm oil, HPO; HIDROPALM®) on diet digestibility, milk yield and milk composition, and on the concentration of the conjugated linoleic acid (CLA) C18:2 cis-9 trans-11 and C18:l trans-11 (vaccenic acid, VA) and other main fatty acids in milk fat. Treatments involved a control diet, without added oil, and 2 diets supplemented with either 12g/kg SO or 12g/kg HPO on a dry matter (DM) basis. In the first experiment, 6 non-pregnant, non-lactating Lacaune ewes were used following a 3 x 3 replicated Latin Square design. Addition of vegetable fat supplement to the diet increased digestibility of DM, organic matter (OM) and crude protein (CP), but did not affect that of the ether extract (EE), neutral detergent fibre (NDF) or acid detergent fibre (ADF). In the second experiment, 60 Lacaune dairy ewes mid-way through lactation (120 ±12 days in milk, 0.98 ± 0.03 kg/day average milk yield) were divided into three equalsized groups each of which was assigned to one of the three experimental diets for4 weeks. Compared with the control treatment, supplementation with HPO increased milk yield and energy-corrected milk. But neither vegetable fat supplement modified percentages of fat and protein in milk. Supplementation with HPO increased C14:l, C16:l and C16:0 content and reduced C18:0 and C18:l cis-9 content in milk fat. Supplementation with SO increased the VA content in milk fat by 36% and that of cis-9 trans-11 CLA by 29% in comparison with the control diet. Supplementation with HPO led to milk fat with 15% more cis-9 trans-11 CLA than control milk. In conclusion, adding a moderate dose of HPO or SO to the diets increased CLA concentration in milk fat. Nevertheless, supplementation with SO was more effective than HPO in increasing CLA concentration in milk fat and reducing the atherogenicity index, improving milk quality from the human health standpoint.

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Section: Discussionsupporting

confidence: 83%

Section: Discussionmentioning

confidence: 99%

Effects of dietary sources of vegetable fats on performance of dairy ewes and conjugated linoleic acid (CLA) in milk

Castro

Manso

Jimeno

et al. 2009

Small Ruminant Research

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“…Esse aumento, no entanto, não diferiu entre as fontes testadas. Do mesmo modo, Wu et al (1993), utilizando 2,5% de gordura proveniente de sais de cálcio de óleo de palma, sebo bovino ou prilled fat, verificaram aumento de 2,01 kg de leite dia em comparação ao tratamento controle.…”

Section: Resultsunclassified

“…A ausência de efeitos da suplementação na dieta sobre o consumo de MS pode ter resultado da não-influência dos lipídeos da dieta sobre os microrganismos ruminais. De acordo com Wu et al (1993), a diminuição do consumo de MS com a adição de fontes de lipídeos pode ocorrer no início da lactação, quando o tecido adiposo libera AG, que, juntamente com os AG de origem dietética, podem exceder a quantidade de gordura que o animal pode utilizar eficientemente, ocasionando diminuição Tabela 2 -Composição das dietas experimentais (% MS) A eficiência, expressa em energia líquida do leite (EL(leite)) em relação à energia líquida consumida (CEL), não foi influenciada pela suplementação e não diferiu entre as fontes de lipídeos utilizadas (Tabela 5). Smith et al (1978), utilizando uma dieta controle (2,9% EE), uma com teor médio de gordura (8,4% EE) e outra com alto teor de gordura (14,3% EE), verificaram valores de eficiência energética de 55,6; 65,8 e 66,1%, respectivamente, próximos ao encontrado nesse trabalho.…”

Section: Resultsunclassified

“…Por outro lado, Canale et al (1990) verificaram aumento na conversão de MS consumida para PLC4% quando as vacas lactantes foram alimentadas com 2,56% de sais de óleo de palma em comparação a uma dieta controle. Os resultados encontrados nesse experimento para a eficiência de utilização dos alimentos para produção de leite, em kg de leite por kg de MS consumida, foram próximos aos relatados por Wu et al (1993), que, ao testarem uma dieta controle com 3,7% de EE e três dietas suplementadas com sebo bovino (6,2% EE), sais de cálcio de óleo de palma (6,1% EE) ou prilled fat (6,2% de EE), encontraram eficiência (PLC3,5%/CMS) de 1,25 a 1,36.…”

Section: Resultsunclassified

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Suplementação de lipídeos de diferentes fontes em dietas para vacas Jersey na fase inicial de lactação

et al. 2007

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RESUMO -Objetivou-se avaliar os efeitos da suplementação de lipídeos como sais de cálcio de óleo de palma (GP), farelo de arroz integral + óleo de arroz (FAIO) ou farelo de arroz integral + sebo bovino (FAIS) sobre o consumo de MS, a eficiência produtiva e o balanço energético de vacas leiteiras no terço inicial da lactação. A dieta controle continha 2,9% EE, enquanto as dietas GP, FAIO e FAIS continham, respectivamente, 5,13; 5,29 e 5,16% EE. Foram utilizadas oito vacas Jersey, puras de origem, de 2 a e 3 a ordens de lactação, aos 70 dias de lactação, com média de 420 kg PV e escore corporal de 3,5 a 4. O delineamento experimental utilizado foi o quadrado latino 4 x 4 duplo, com oito animais, quatro dietas e quatro períodos experimentais de 21 dias (14 dias para adaptação e sete para coleta de amostras para as análises químicas do leite e dos alimentos).A produção de leite corrigida para 3,5% de gordura (PLC3,5%) foi maior com a suplementação de lipídeos à dieta. Não houve efeito da suplementação sobre o consumo de MS. A suplementação de lipídeos resultou em maior eficiência produtiva, expressa como PLC3,5% em relação ao peso metabólico. Independentemente da fonte de lipídeo, não houve efeito das dietas sobre a PLC3,5%, o consumo de MS e a eficiência produtiva. O uso de diferentes fontes de lipídeos em dietas para vacas leiteiras de alta produção pode ser viável, pois sua inclusão na dieta promoveu aumento na produção leiteira sem alterar o consumo de alimentos.Palavras-chave: balanço energético, consumo de matéria seca, eficiência de produção, farelo de arroz integral, produção de leite, sais de cálcio de óleo de palma Fat supplementation from different sources in the diet of Jersey cows in the initial lactation stage ABSTRACT -The objective of this research was to evaluate the effects of fat supplementations as calcium salts of palm oil (PF), whole rice bran + rice oil (WRBO) and whole rice bran + bovine tallow (WRBT) on dry matter intake, productive efficiency and energy balance of dairy cows in the beginning of the first third period of lactation. Control diet contained 2.9% EE, while the diets GP, FAIO and FAIS contained 5.13; 5.29 and 5.16% EE, respectively. Pure bred Jersey cows of 2 nd and 3 rd lactation were used, with 70 days in milk, average weight of 420 kg and body condition of 3.5 to 4. A replicated 4 x 4Latin square experimental design was used, with eight cows, four diets and four experimental periods. Each experimental period consisted of 21 days (14 days for adaptation and 7 for sample collection for the chemical analysis of milk and feeds. Milk production of 3.5% fat corrected milk (FCM 3.5%) was higher with the fat supplementation to the diet. There was no difference in dry matter intake. Fat supplementation showed better results for productive efficiency expressed as FCM3.5% in function of metabolic weight. Independently of lipid source, there was not effect of the diets on PLC3.5%, dry matter intake and productive efficiency, expressed as PLC3.5% in function of the metabolic weight. The ad...

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Effects of supplemental energy sources and trans-10, cis-12 conjugated linoleic acids (CLA) on milk yield and composition in lactating Holstein cows

Lin

Liang

et al. 2010

Front. Agric. China

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Effect of Three Supplemental Fat Sources on Lactation and Digestion in Dairy Cows

Cited by 52 publications

References 21 publications

Effects of dietary sources of vegetable fats on performance of dairy ewes and conjugated linoleic acid (CLA) in milk

Effects of dietary sources of vegetable fats on performance of dairy ewes and conjugated linoleic acid (CLA) in milk

Suplementação de lipídeos de diferentes fontes em dietas para vacas Jersey na fase inicial de lactação

Effects of supplemental energy sources and trans-10, cis-12 conjugated linoleic acids (CLA) on milk yield and composition in lactating Holstein cows

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