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2 results on '"Growing Holstein heifer"'

1. The crucial role of lysine in the hepatic metabolism of growing Holstein dairy heifers as revealed by LC-MS-based untargeted metabolomics

Author

Fanlin Kong, Yuan Li, Qiyu Diao, Yanliang Bi, and Yan Tu

Subjects
Growing Holstein heifer, Lysine, Liver, Untargeted metabolomics, Animal culture, SF1-1100
Abstract

The objective of this experiment was to evaluate the effect of supplementing rumen-protected Lys based on a Lys-deficient diet on liver metabolism in growing Holstein heifers. The experiment was conducted for 3 months with 36 Holstein heifers (initial body weight: 200 ± 9.0 kg; 7-month-old). Heifers were randomly assigned to 2 diets based on corn, soybean meal, alfalfa hay, and wheat bran: control, Lys-deficient diet (LD; 0.66% Lys in diet), and Lys-adequate diet (LA; 1.00% Lys in diet). The results showed no difference in growth performance between the 2 groups (P > 0.05). However, there was a clear trend of increasing feed conversion rate with Lys supplementation (0.05

Published
2021
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2. The crucial role of lysine in the hepatic metabolism of growing Holstein dairy heifers as revealed by LC-MS-based untargeted metabolomics

Author

Yan Tu, Fanlin Kong, Yanliang Bi, Yuan Li, and Qiyu Diao

Subjects
Growing Holstein heifer, Untargeted metabolomics, Chemistry, Lysine, Soybean meal, Biological value, Urine, Metabolism, Feed conversion ratio, SF1-1100, Animal culture, Excretion, Animal science, Food Animals, Liver, Animal Science and Zoology, Original Research Article, Drug metabolism, Lipoprotein
Abstract

The objective of this experiment was to evaluate the effect of supplementing rumen-protected Lys based on a Lys-deficient diet on liver metabolism in growing Holstein heifers. The experiment was conducted for 3 months with 36 Holstein heifers (initial body weight: 200 ± 9.0 kg; 7-month-old). Heifers were randomly assigned to 2 diets based on corn, soybean meal, alfalfa hay, and wheat bran: control, Lys-deficient diet (LD; 0.66% Lys in diet), and Lys-adequate diet (LA; 1.00% Lys in diet). The results showed no difference in growth performance between the 2 groups (P > 0.05). However, there was a clear trend of increasing feed conversion rate with Lys supplementation (0.05

Published
2020

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