Milk performance of dairy cows supplemented with rapeseed oil, peanut oil and sunflower seed oil

The objective of the study was to investigate the effects of supplementing different plant oils to the basal diet on milk yield and milk composition in mid-lactating dairy cows. Forty Chinese Holstein dairy cows averaging 120 days in milk at the start of the experiment (body weight = 580+/-18.2 kg;...

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Veröffentlicht in:	Czech Journal of Animal Science 2011-01, Vol.56 (4)
Hauptverfasser:	Dai, X.J.,China Jiliang Univ., Hangzhou (China), Wang, C.,Zhejiang Agriculture and Forestry Univ., Hangzhou (China), Zhu, Q.,Xiuzhou Municipal Bureau of Livestock Veterinary, Jiaxing (China)
Format:	Artikel
Sprache:	eng
Schlagworte:	ACEITE DE COLZA ACEITE DE GIRASOL ACEITES VEGETALES ACIDE GRAS POLYINSATURE ACIDE GRAS SATURE ACIDE LINOLEIQUE ACIDE OLEIQUE ACIDO LINOLEICO ACIDO OLEICO ACIDOS GRASOS POLIINSATURADOS ACIDOS GRASOS SATURADOS ADDITIF AUX ALIMENTS DES ANIMAUX ADITIVOS DE PIENSOS ALIMENT POUR ANIMAUX ALIMENTACION DE LOS ANIMALES ALIMENTATION DES ANIMAUX ANIMAL FEEDING ANIMAL NUTRITION APTITUD LECHERA APTITUDE LAITIERE AZUCAR EN SANGRE BLOOD PLASMA BLOOD PROTEINS BLOOD SUGAR CHEMICAL COMPOSITION CHOLESTEROL COLESTEROL COMPLEMENT ALIMENTAIRE COMPOSICION QUIMICA COMPOSITION CHIMIQUE CONTENIDO DE LIPIDOS CONTENIDO PROTEICO CONTEO DE CELULAS SOMATICAS DAIRY COWS DIET DIETA FEED ADDITIVES FEED INTAKE FEEDS GLUCOSA GLUCOSE http://www.fao.org/aos/agrovoc#c_14992 http://www.fao.org/aos/agrovoc#c_1584 http://www.fao.org/aos/agrovoc#c_15998 http://www.fao.org/aos/agrovoc#c_16126 http://www.fao.org/aos/agrovoc#c_1794 http://www.fao.org/aos/agrovoc#c_2261 http://www.fao.org/aos/agrovoc#c_24276 http://www.fao.org/aos/agrovoc#c_24939 http://www.fao.org/aos/agrovoc#c_25506 http://www.fao.org/aos/agrovoc#c_26767 http://www.fao.org/aos/agrovoc#c_27925 http://www.fao.org/aos/agrovoc#c_2827 http://www.fao.org/aos/agrovoc#c_2843 http://www.fao.org/aos/agrovoc#c_29238 http://www.fao.org/aos/agrovoc#c_29254 http://www.fao.org/aos/agrovoc#c_3287 http://www.fao.org/aos/agrovoc#c_33554 http://www.fao.org/aos/agrovoc#c_33996 http://www.fao.org/aos/agrovoc#c_4146 http://www.fao.org/aos/agrovoc#c_429 http://www.fao.org/aos/agrovoc#c_4352 http://www.fao.org/aos/agrovoc#c_4360 http://www.fao.org/aos/agrovoc#c_5274 http://www.fao.org/aos/agrovoc#c_5341 http://www.fao.org/aos/agrovoc#c_6251 http://www.fao.org/aos/agrovoc#c_8090 http://www.fao.org/aos/agrovoc#c_8170 http://www.fao.org/aos/agrovoc#c_9320 http://www.fao.org/aos/agrovoc#c_9324 http://www.fao.org/aos/agrovoc#c_970 HUILE DE COLZA HUILE DE TOURNESOL HUILE VEGETALE INGESTION DE PIENSOS LACTOSA LACTOSE LINOLEIC ACID LIPID CONTENT MILK PERFORMANCE MILK YIELD NUMERATION CELLULAIRE SOMATIQUE NUTRICION ANIMAL NUTRIENTES NUTRIENTS NUTRITION ANIMALE OLEIC ACID PEANUT OIL PIENSOS PLANT OILS PLASMA SANGUIN PLASMA SANGUINEO POLYUNSATURATED FATTY ACIDS PRISE ALIMENTAIRE (ANIMAUX) PROTEIN CONTENT PROTEINAS SANGUINEAS PROTEINE SANGUINE RAPESEED OIL REGIME ALIMENTAIRE RENDEMENT LAITIER RENDIMIENTO LECHERO SATURATED FATTY ACIDS SOMATIC CELL COUNT SUBSTANCE NUTRITIVE SUCRE DU SANG SUNFLOWER OIL SUPLEMENTOS SUPPLEMENTS TENEUR EN LIPIDES TENEUR EN PROTEINES TRIGLICERIDOS TRIGLYCERIDE TRIGLYCERIDES UREA UREE VACAS LECHERAS VACHE LAITIERE
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Zusammenfassung:	The objective of the study was to investigate the effects of supplementing different plant oils to the basal diet on milk yield and milk composition in mid-lactating dairy cows. Forty Chinese Holstein dairy cows averaging 120 days in milk at the start of the experiment (body weight = 580+/-18.2 kg; milk yield = 33.0+/-2.00 kg/day) were used in a completely randomized block design. The animals were assigned to four dietary treatments according to DIM and milk yield, and supplemented with no oil (control), 2% rapeseed oil (RSO), 2% peanut oil (PNO) and 2% sunflower seed oil (SFO). Milk yield and milk composition (fat, protein and lactose) were measured. Dry matter intake was similar in all treatments. The supplementation of plant oil increased milk yield, with the highest milk yield in RSO group. Milk composition was not affected by treatments except for an increase in milk protein content in oil supplemented groups. The fatty acid profile of milk was altered by fat supplementation. Feeding plant oils reduced the proportion of both short-chain (C4:0 to C12:0) and medium-chain (C14:0 to C16:1) fatty acids, and increased the proportion of long-chain (equal or more than C18:0) fatty acids in milk fat. The inclusion of vegetable oils increased the concentration of cis-9, trans-11 conjugated linoleic acid (CLA). The cis-9, trans-11 CLA content in milk fat was higher from RSO to PNO and SFO was higher than the control. The trans-vaccenic acid (TVA) concentration was higher in the SFO diet, followed by PNO, RSO, and control diets. The results of this study indicated that linoleic acid was more effective in enhancing contents of TVA and CLA in milk fat than oleic acid. Feeding plant oils increased monounsaturated and polyunsaturated fatty acids and decreased saturated fatty acids in milk fat. In conclusion, dietary supplementation of RSO increases milk yield the most, while SFO enhances the cis-9, trans-11 CLA content in milk fat more effectively.
ISSN:	1212-1819
DOI:	10.17221/1434-cjas