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Supplementation of rumen-protected lysine during the close-up period improves vaginal discharge clearance in Holstein dairy cows.
Kawashima, Chiho; Hayakawa, Hina; Taniguchi, Aki; Sugimoto, Yusuke; Kusaba, Nobuyuki; Yamagishi, Norio; Goto, Akira.
Afiliación
  • Kawashima C; Field Center of Animal Science and Agriculture, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan.
  • Hayakawa H; Field Center of Animal Science and Agriculture, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan.
  • Taniguchi A; Field Center of Animal Science and Agriculture, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan.
  • Sugimoto Y; Ajinomoto Co., Inc., Chuo-Ku, Tokyo, Japan.
  • Kusaba N; Field Center of Animal Science and Agriculture, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan.
  • Yamagishi N; Research Center for Global Agromedicine, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan.
  • Goto A; Division of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan.
Reprod Domest Anim ; 59(4): e14558, 2024 Apr.
Article en En | MEDLINE | ID: mdl-38566368
ABSTRACT
We aimed to evaluate the effects of rumen-protected lysine (RPL) supplementation during the close-up period on uterine involution and the resumption of ovarian function in dairy cows. Fifty-two multiparous Holstein cows were categorized based on parity and expected calving date and randomly assigned to the RPL or control (CON) groups. The RPL group received 80 g of RPL daily from day 21 before the expected calving date until parturition. Blood samples were obtained twice weekly from pre-supplementation to 6 weeks postpartum. The onset of luteal activity postpartum was determined via ultrasonography twice weekly for up to 6 weeks postpartum. Uterine involution was tracked at 3 and 5 weeks postpartum through the vaginal discharge score, percentage of polymorphonuclear cells (PMN) in endometrial cytology samples, presence of intrauterine fluid, and gravid horn diameter via ultrasonography. Before supplementation, the RPL group showed amino acid imbalance, which was improved by RPL supplementation. There were no significant differences in the onset of luteal activity, percentage of PMN, intrauterine fluid, or the diameter of the uterine horn between the two groups. The vaginal discharge score in the RPL group decreased from 3 to 5 weeks postpartum, whereas that in the CON groups did not decrease. The number of cows with clinical endometritis was lower in the RPL group. Overall, RPL supplementation during the close-up period enhanced vaginal discharge clearance, potentially averting clinical endometritis, but did not affect the first ovulation in dairy cows.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Enfermedades de los Bovinos / Excreción Vaginal / Endometritis Límite: Animals / Pregnancy Idioma: En Revista: Reprod Domest Anim Asunto de la revista: MEDICINA REPRODUTIVA / MEDICINA VETERINARIA Año: 2024 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Alemania
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Enfermedades de los Bovinos / Excreción Vaginal / Endometritis Límite: Animals / Pregnancy Idioma: En Revista: Reprod Domest Anim Asunto de la revista: MEDICINA REPRODUTIVA / MEDICINA VETERINARIA Año: 2024 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Alemania