Description

• Title:
  ENERGY AND CALCIUM BOLUSES AND THEIR INFLUENCE ON PREGNANCY RATE AFTER OVS PROGRAM IN COWS WITH POSTPARTUM ANOESTRUS
• Creator:
  Graczyk, Szymon;
  Woźniakowski, Grzegorz;
  M Jaśkowski, jędrzej
• Description:
  In many studies, it has been confirmed that the negative energy balance increases theinterval to first ovulation after calving. Vitamin D is involved with Ca and P homeostasis andimmunity. Total confinement of cows that limited exposure to sunlight and increased relianceon silage may reduce the amount of vitamin D that is synthesized by the cows and consumedin the basal diet (1,2). It was assumed that an interventional increase in energy, Ca andvitamin D3 levels could improve the effectiveness of the OVS program in anestrus cows. Theaim of the study was to assess the conception rate in cows receiving the oral energy bolusand the bolus with the addition of vitamin D3 and Ca. At preliminary stage, 33 cows wereselected on the basis of history, breeding records and per-rectal examination of genitalia. Thecows which did not exhibited an apparent clinical sign of estrum, and had a normal genitaltract with atonic uterus and smooth, small inactive ovaries, even after 90 days postpartumwere selected for further experiment. The study was conducted on 33 cows with postpartumanestrus, divided into two groups. On the day of the experiment, the first received twoboluses: an energy bolus (to pro animal health) and Calcium bolus (Jfarm) containing highlevel of Ca (185 g) and vitamine D3 (group I n = 18); the second (grup II; n=15) served ascontrol. Boluses were applied to the rumen using a special applicator. At the same time,animals in both groups were subjected to the OVS program (GnRH (day 0; i.m. inj. 100 μg ofReceptal (Intervet)), PG (day 7., i.m. inj. 500 μg of Estrumate (MSD)), GnRH (day. 9).Insemination was carried out 24 hours after the administration of the final dose of GnRH.Blood samples were collected from all cows on day „0” using the Optimum Xido Neoapparatus (Abbot), equipped with test strips and suitable for field testing. Glucose and β-hydroxybutyric acid (BHBA) concentrations. The average number of lactations, and days afterdelivery before the start of the experiment was 1.16 and 1.66 lactations, and 88,6 and 99.5days. The mean body condition scoring (BCS) was 2,0 and 2,1. Glucose concentration and β-hydroxybutyric acid was 2.68 and 2.86 mmol/l, and 0.65 and 0.6 μmol/l in groups I and IIrespectively. The conception rate was 50% in group I and 40% in the control group. Based onpreliminary results, it seems that the use of energy boluses may improve the conception ratein cows with postpartum anesthesia undergoing the OVS program. The research will continue.
• Object availability:
  free access
• Rights: https://creativecommons.org/licenses/by-nd/4.0 ;
  Prawa autorskie (c) 2023 Graczyk Sz, Wozniak G, Jaśkowski J.M.
• Date:
  2023.07.09
• Type:
  info:eu-repo/semantics/article;
  info:eu-repo/semantics/publishedVersion
• Language:
  English
• Source:
  Translational Research in Veterinary Science; Vol. 6 No. 1 (2023); 13;
  Translational Research In Veterinary Science; Tom 6 Nr 1 (2023); 13;
  2657-4489
• Format:
  application/pdf
• Publisher:
  Nicolaus Copernicus University in Toruń
• Relation: https://apcz.umk.pl/TRVS/article/view/63747/43281
• Subject:
  anestrus;
  energy and Ca boluses;
  cows
• Identifier: https://apcz.umk.pl/TRVS/article/view/63747
• Data provider:
  Akademicka Platforma Czasopism
• Can I use it?:
  seek permission
• Type:
  text