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Feeding supplemental fatty acids to ...

Delahoy, James Edward.

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Feeding supplemental fatty acids to lactating dairy cows: Implications on production, biohydrogenation, digestion, and milk fatty acid profile.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Feeding supplemental fatty acids to lactating dairy cows: Implications on production, biohydrogenation, digestion, and milk fatty acid profile./
Author:	Delahoy, James Edward.
Description:	252 p.
Notes:	Adviser: Lawrence D. Muller.
Contained By:	Dissertation Abstracts International65-12B.
Subject:	Agriculture, Animal Culture and Nutrition. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3157529
ISBN:	9780496899005

Feeding supplemental fatty acids to lactating dairy cows: Implications on production, biohydrogenation, digestion, and milk fatty acid profile.
Delahoy, James Edward.

Feeding supplemental fatty acids to lactating dairy cows: Implications on production, biohydrogenation, digestion, and milk fatty acid profile. - 252 p.

Adviser: Lawrence D. Muller.

Thesis (Ph.D.)--The Pennsylvania State University, 2004.

Studies were conducted to determine (1) the response in dry matter intake, milk yield, and milk fatty acid profile of lactating dairy cows were fed increasing amounts of calcium salts of oleic acid (18:1, n-9) (CaO), and (2) to evaluate the effects of feeding calcium salts of oleic acid and amides of oleic acid on rumen biohydrogenation, digestion, milk production, and milk fatty acid of lactating dairy cows.

ISBN: 9780496899005Subjects--Topical Terms:

1017857
Agriculture, Animal Culture and Nutrition.

Feeding supplemental fatty acids to lactating dairy cows: Implications on production, biohydrogenation, digestion, and milk fatty acid profile.
LDR:02976nam 2200289 a 45 001 947760
005 20110524
008 110524s2004 ||||||||||||||||| ||eng d
020 $a 9780496899005
035 $a (UMI)AAI3157529
035 $a AAI3157529
040 $a UMI $c UMI
100 1 $a Delahoy, James Edward. $3 1271235
245 1 0 $a Feeding supplemental fatty acids to lactating dairy cows: Implications on production, biohydrogenation, digestion, and milk fatty acid profile.
300 $a 252 p.
500 $a Adviser: Lawrence D. Muller.
500 $a Source: Dissertation Abstracts International, Volume: 65-12, Section: B, page: 6100.
502 $a Thesis (Ph.D.)--The Pennsylvania State University, 2004.
520 $a Studies were conducted to determine (1) the response in dry matter intake, milk yield, and milk fatty acid profile of lactating dairy cows were fed increasing amounts of calcium salts of oleic acid (18:1, n-9) (CaO), and (2) to evaluate the effects of feeding calcium salts of oleic acid and amides of oleic acid on rumen biohydrogenation, digestion, milk production, and milk fatty acid of lactating dairy cows.
520 $a In the first study, ten multiparous Holstein cows averaging 102 days in milk were paired according to milk yield, DIM, and parity, and were assigned to a control or treatment group in a completely randomized design with repeated measures over four sampling periods (seven days in length). All cows were fed a basal TMR containing 18% CP, 33% NDF, 38% NSC, and 2.85% fatty acids. Five cows in the treatment group were fed increasing amounts of CaO of 0, 340, 680, and 1020 g/d per cow during periods 1, 2, 3, and 4, respectively. Cows in the control group (n = 5) were fed the basal TMR only. Milk yield and DMI were determined daily. Mean DMI (23.7 kg/d), milk yield (33.8 kg/d), milk fat (3.36%), and milk protein (2.93%) were not affected by feeding CaO. Saturated fatty acids (C4:0 to C20:0) content in milk decreased linearly (65.2% to 54.7%; r2 = 0.55) with increasing amounts of CaO. 18:1 trans-11 content in milk increased for cows fed CaO and there were treatment by period interactions. Conjugated linoleic acid (18:2 cis-9, trans-11 (CLA)) increased from 3.8 to 9.1 mg/g of fat for cows fed CaO. Feeding increasing amounts of CaO decreased the content of saturated fatty acids and increased the content CLA in milk with no detrimental effects on milk production.
520 $a In the second study, twenty-five Holstein multiparous cows were grouped according to milk yield and DIM (85d), and used in a 5 x 5 Latin square design replicated five times. A control group (CON) was fed a total mixed ration (TMR) with no added fat (16% CP, 45% NSC, 30% NDF, 1.9% fat). (Abstract shortened by UMI.)
590 $a School code: 0176.
650 4 $a Agriculture, Animal Culture and Nutrition. $3 1017857
690 $a 0475
710 2 $a The Pennsylvania State University. $3 699896
773 0 $t Dissertation Abstracts International $g 65-12B.
790 $a 0176
790 1 0 $a Muller, Lawrence D., $e advisor
791 $a Ph.D.
792 $a 2004
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3157529