飼料に添加した脂肪の性質が乳牛の乳脂肪分泌におよぼす影響

田中 桂一

doi:10.2508/chikusan.41.254

The effect of the type of dietary fat on milk fat secretion in the cows

Keiichi TANAKA

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JOURNAL FREE ACCESS

1970 Volume 41 Issue 5 Pages 254-261

DOI https://doi.org/10.2508/chikusan.41.254

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Published: May 25, 1970 Received: December 17, 1969 Available on J-STAGE: March 10, 2008 Accepted: - Advance online publication: - Revised: -
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Date of correction: March 10, 2008 Reason for correction: - Correction: PDF FILE Details: -

Date of correction: March 10, 2008 Reason for correction: - Correction: PDF FILE Details: -

Date of correction: March 10, 2008 Reason for correction: - Correction: ABSTRACT Details: Wrong : The effect of the isocaloric replacement of part of the dietary concentrate mixture by either coconut, soybean or cod oil on the yield and composition of the milk fat and the pattern of rumen fermentation was investigated in four dairy cows using a 4×4 Latin square design balanced respect to residual effects.
The addition of coconut oil to the concentrate mixture resulted in the increased yield and percentage of milk fat. In contrast, the inclusion of cod oil in the concentrate mixture decreased the yield and percentage of milk fat.
when the concentrate mixture containing coconut oil was given to the cows, the percentages of the medium-chain fatty acids (12:0 and 14:0) in the milk fat were increased, but the percentage of 18:1 was decreased. With the addition of soybean oil to the concentrate mixture, the percentages of the fatty acids from 4:0 to 16:0 in the milk fat were reduced, but the percentage of 18:1 was decreased. With the addition of soybean oil to the concentrate mixture, the
percentages of the fatty acids from 4:0 to 16:0 in the milk fat were reduced, but the percentage of 18:1 was increased. The inclusion of cod oil in the concentrate mixture resulted in the decreased percentages of the fatty acids from 4:0 to 14:0 and 18:0 in the milk fat, the percentages of 16:0, 16:1, 18:1, 18:2 and higher unsaturated fatty acids than 18:3 were increased.
When the cows were given the concentrate mixture containing cod oil, there was a reduction in the acetic acid: propionic acid ratio in the rumen liquor.
When the concentrate mixture containing coconut oil was given to the cows, the percentages of 12:0, 14:0 and 16:0 in blood plasma triglycerides were increased, while the percentages of 18:1 and 18:2 were reduced. With the addition of soybean oil to the concentrate mixture, there was an increase in the percentages of 18:0 and 18:1 in blood plasma triglycerides, but a reduction in the percentage of 18:2. When the cows were given the concentrate mixture containing cod oil, the percentages of 16:0, 16:1, 18:1 and higher unsaturated fatty acids than 18:3 in blood plasma triglycerides were increased, while the percentage of 18:0 was decreased.
Right : The effect of the isocaloric replacement of part of the dietary concentrate mixture by either coconut, soybean or cod oil on the yield and composition of the milk fat and the pattern of rumen fermentation was investigated in four dairy cows using a 4×4 Latin square design balanced respect to residual effects.
The addition of coconut oil to the concentrate mixture resulted in the increased yield and percentage of milk fat. In contrast, the inclusion of cod oil in the concentrate mixture decreased the yield and percentage of milk fat.
when the concentrate mixture containing coconut oil was given to the cows, the percentages of the medium-chain fatty acids (12:0 and 14:0) in the milk fat were increased, but the percentage of 18:1 was decreased. With the addition of soybean oil to the concentrate mixture, the percentages of the fatty acids from 4:0 to 16:0 in the milk fat were reduced, but the percentage of 18:1 was decreased. With the addition of soybean oil to the concentrate mixture, the percentages of the fatty acids from 4:0 to 16:0 in the milk fat were reduced, but the percentage of 18:1 was increased. The inclusion of cod oil in the concentrate mixture resulted in the decreased percentages of the fatty acids from 4:0 to 14:0 and 18:0 in the milk fat, the percentages of 16:0, 16:1, 18:1, 18:2 and higher unsaturated fatty acids than 18:3 were increased.
When the cows were given the concentrate mixture containing cod oil, there was a reduction in the acetic acid: propionic acid ratio in the rumen liquor.
When the concentrate mixture containing coconut oil was given to the cows, the percentages of 12:0, 14:0 and 16:0 in blood plasma triglycerides were increased, while the percentages of 18:1 and 18:2 were reduced. With the addition of soybean oil to the concentrate mixture, there was an increase in the percentages of 18:0 and 18:1 in blood plasma triglycerides, but a reduction in the percentage of 18:2. When the cows were given the concentrate mixture containing cod oil, the percentages of 16:0, 16:1, 18:1 and higher unsaturated fatty acids than 18:3 in blood plasma triglycerides were increased, while the percentage of 18:0 was decreased.

Date of correction: March 10, 2008 Reason for correction: - Correction: DTPUB Details: Right : 19700525

Date of correction: March 10, 2008 Reason for correction: - Correction: PDF FILE Details: -

Abstract

The effect of the isocaloric replacement of part of the dietary concentrate mixture by either coconut, soybean or cod oil on the yield and composition of the milk fat and the pattern of rumen fermentation was investigated in four dairy cows using a 4×4 Latin square design balanced respect to residual effects.
The addition of coconut oil to the concentrate mixture resulted in the increased yield and percentage of milk fat. In contrast, the inclusion of cod oil in the concentrate mixture decreased the yield and percentage of milk fat.
when the concentrate mixture containing coconut oil was given to the cows, the percentages of the medium-chain fatty acids (12:0 and 14:0) in the milk fat were increased, but the percentage of 18:1 was decreased. With the addition of soybean oil to the concentrate mixture, the percentages of the fatty acids from 4:0 to 16:0 in the milk fat were reduced, but the percentage of 18:1 was decreased. With the addition of soybean oil to the concentrate mixture, the percentages of the fatty acids from 4:0 to 16:0 in the milk fat were reduced, but the percentage of 18:1 was increased. The inclusion of cod oil in the concentrate mixture resulted in the decreased percentages of the fatty acids from 4:0 to 14:0 and 18:0 in the milk fat, the percentages of 16:0, 16:1, 18:1, 18:2 and higher unsaturated fatty acids than 18:3 were increased.
When the cows were given the concentrate mixture containing cod oil, there was a reduction in the acetic acid: propionic acid ratio in the rumen liquor.
When the concentrate mixture containing coconut oil was given to the cows, the percentages of 12:0, 14:0 and 16:0 in blood plasma triglycerides were increased, while the percentages of 18:1 and 18:2 were reduced. With the addition of soybean oil to the concentrate mixture, there was an increase in the percentages of 18:0 and 18:1 in blood plasma triglycerides, but a reduction in the percentage of 18:2. When the cows were given the concentrate mixture containing cod oil, the percentages of 16:0, 16:1, 18:1 and higher unsaturated fatty acids than 18:3 in blood plasma triglycerides were increased, while the percentage of 18:0 was decreased.

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