Effects of β-carotene-enriched dry carrots on β-carotene status and colostral immunoglobulin in β-carotene-deficient Japanese Black cows.
Data from 18 β-carotene-deficient Japanese Black cows were collected to clarify the effects of feeding β-carotene-enriched dry carrots on β-carotene status and colostral immunoglobulin (Ig) in cows. Cows were assigned to control or carrot groups from 3 weeks before the expected calving date to parturition, and supplemental β-carotene from dry carrots was 138 mg/day in the carrot group. Plasma β-carotene concentrations in the control and carrot groups at parturition were 95 and 120 μg/dL, and feeding dry carrots slightly improved plasma β-carotene at parturition. Feeding dry carrots increased colostral IgA concentrations in cows and tended to increase colostral IgG1, but colostral IgM, IgG2, β-carotene and vitamin A were not affected by the treatment. Feeding dry carrots had no effects on plasma IgG1, IgA and IgM concentrations in cows, but plasma IgG1concentrations decreased rapidly from 3 weeks before the expected calving date to parturition. These results indicate that feeding β-carotene-enriched dry carrots is effective to enhance colostral IgA and IgG1concentrations in β-carotene-deficient cows.
Graduate School of Agriculture, Kyoto University, Kyoto, Japan.
Yoshitaka
Y
Nishijima
Graduate School of Agriculture, Kyoto University, Kyoto, Japan.
Saya
S
Taniguchi
Graduate School of Agriculture, Kyoto University, Kyoto, Japan.
Shuntaro
S
Ikeda
Shiga Prefectural Livestock Technology Promotion Center, Hino, Japan.
Kenichi
K
Yoshitani
Shiga Prefectural Livestock Technology Promotion Center, Hino, Japan.
Takashi
T
Hamano
Shiga Prefectural Livestock Hygiene Service Center, Ohmihachiman, Japan.
Hiroshi
H
Tani
Shiga Prefectural Livestock Technology Promotion Center, Hino, Japan.
Masahiko
M
Fujita
Shiga Prefectural Livestock Technology Promotion Center, Hino, Japan.
Kenji
K
Murakami
Chubu Shiryo Co. Ltd, Ohbu, Japan.
Keisuke
K
Kogusa
Chubu Shiryo Co. Ltd, Ohbu, Japan.
Kenji
K
Sato
Graduate School of Agriculture, Kyoto University, Kyoto, Japan.
Miki
M
Sugimoto
Graduate School of Agriculture, Kyoto University, Kyoto, Japan.
Shinichi
S
Kume
D000821:Animal Feed; D000824:Animal Nutritional Physiological Phenomena / Q000502:physiology*; D000818:Animals; D002417:Cattle; D003126:Colostrum / Q000276:immunology* / Q000378:metabolism; D018552:Daucus carota; D005260:Female; D005527:Food, Fortified; D007071:Immunoglobulin A, Secretory / Q000378:metabolism*; D007074:Immunoglobulin G / Q000378:metabolism*; D011247:Pregnancy; D019207:beta Carotene / Q000008:administration & dosage* / Q000097:blood / Q000172:deficiency
D007071:Immunoglobulin A, Secretory; D007074:Immunoglobulin G; D019207:beta Carotene
Immunoglobulin; bovine colostrum; carrot; β-carotene