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Effect of supplementation of concentrates or selenium on production and reproduction in cows grazing pastures of high protein degradability

Technical Report:

Abstract

Two experiments were carried out to determine whether the deleterious effects of high amounts of degradable protein on reproduction and production of dairy cows could be minimized by a supplemental source of undergradable protein, or grain supplementation while grazing; and to study the effect of selenium supplementation before calving on the incidence of stillbirths, mastitis, puerperal and metabolic disorders. In a first experiment, 24 Holstein cows fed on red and white clover pasture, paired by previous milk production, calving data and body condition, were supplemented with corn silage and one of two concentrates differing only in the proportion of degradable protein (Group H: 71.5% and Group L: 51.5%). The degradable protein intake from pasture supplied 93% of the requirements in both groups. The addition of undergradable protein in the concentrate of Group L did not improve reproductive performance nor milk, butterfat or solids non-fat production. In a second experiment, 132 Holstein cows and heifers were paired likewise. Both animals in each pair were fed similar forage resources, but each one was supplemented with 2 kg/cow corn grain four times a day (Herd 1) or 4 kg/cow tow times a day (Herd 2). One animal in each pair was randomly assigned  More>>
Authors:
Mongiardino, M E; Humaran, M; Corbellini, C N; Baldan, A M; Cuneo, M; Balbiani, G [1] 
  1. Instituto Nacional de Tecnologia Agropecuaria, Moron, Provincia de Buenos Aires (Argentina). Inst. de Patobiologia
Publication Date:
May 01, 1996
Product Type:
Technical Report
Report Number:
IAEA-TECDOC-877; CONF-9309522-
Reference Number:
SCA: 553005; PA: AIX-27:070487; EDB-96:167987; SN: 96001683696
Resource Relation:
Conference: Final research coordination meeting of a co-ordinated research programme on development of feed supplementation strategies for improving ruminant productivity on small-holder farms in Latin America th, Piracicaba (Brazil), 27 Sep - 1 Oct 1993; Other Information: PBD: May 1996; Related Information: Is Part Of Development of feed supplementation strategies for improving ruminant productivity on small-holder farms in Latin America through the use of immunoassay techniques. Proceedings of the final research co-ordination meeting of a co-ordinated research programme; PB: 183 p.
Subject:
55 BIOLOGY AND MEDICINE, BASIC STUDIES; COWS; FERTILITY; REPRODUCTION; MEASURING METHODS; RADIOIMMUNOASSAY; ANIMAL FEEDS; CALVES; COORDINATED RESEARCH PROGRAMS; EXPERIMENTAL DATA; FARMS; GRAZING; MILK; PRODUCTIVITY; SELENIUM
OSTI ID:
390469
Research Organizations:
Joint FAO/IAEA Div. of Nuclear Techniques in Food and Agriculture, Vienna (Austria)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 1011-4289; Other: ON: DE97602779; TRN: XA9642511070487
Availability:
INIS; OSTI as DE97602779
Submitting Site:
INIS
Size:
pp. 145-155
Announcement Date:
Jan 20, 2004

Technical Report:

Citation Formats

Mongiardino, M E, Humaran, M, Corbellini, C N, Baldan, A M, Cuneo, M, and Balbiani, G. Effect of supplementation of concentrates or selenium on production and reproduction in cows grazing pastures of high protein degradability. IAEA: N. p., 1996. Web.
Mongiardino, M E, Humaran, M, Corbellini, C N, Baldan, A M, Cuneo, M, & Balbiani, G. Effect of supplementation of concentrates or selenium on production and reproduction in cows grazing pastures of high protein degradability. IAEA.
Mongiardino, M E, Humaran, M, Corbellini, C N, Baldan, A M, Cuneo, M, and Balbiani, G. 1996. "Effect of supplementation of concentrates or selenium on production and reproduction in cows grazing pastures of high protein degradability." IAEA.
@misc{etde_390469,
title = {Effect of supplementation of concentrates or selenium on production and reproduction in cows grazing pastures of high protein degradability}
author = {Mongiardino, M E, Humaran, M, Corbellini, C N, Baldan, A M, Cuneo, M, and Balbiani, G}
abstractNote = {Two experiments were carried out to determine whether the deleterious effects of high amounts of degradable protein on reproduction and production of dairy cows could be minimized by a supplemental source of undergradable protein, or grain supplementation while grazing; and to study the effect of selenium supplementation before calving on the incidence of stillbirths, mastitis, puerperal and metabolic disorders. In a first experiment, 24 Holstein cows fed on red and white clover pasture, paired by previous milk production, calving data and body condition, were supplemented with corn silage and one of two concentrates differing only in the proportion of degradable protein (Group H: 71.5% and Group L: 51.5%). The degradable protein intake from pasture supplied 93% of the requirements in both groups. The addition of undergradable protein in the concentrate of Group L did not improve reproductive performance nor milk, butterfat or solids non-fat production. In a second experiment, 132 Holstein cows and heifers were paired likewise. Both animals in each pair were fed similar forage resources, but each one was supplemented with 2 kg/cow corn grain four times a day (Herd 1) or 4 kg/cow tow times a day (Herd 2). One animal in each pair was randomly assigned to receive a barium selenate injection before calving. Rumen ammonia was higher in Herd 1 in both sampling dates (17 vs 4.2 mg/100 ml and 12 vs 9 mg/100 ml), as well as serum urea up to 50 days post-partum (26 vs 19 mg/100 ml, P<0.02). Body condition scores were similar at calving but significantly lower in Herd 1 during the lactation period (P<0.05). Total milk and butterfat production were higher in Herd 2 (6406.2 vs 6893.8 kg and 190.4 vs 203.5 kg, respectively). Selenium improved pregnancy rate to first artificial insemination in Herd 2 (71 vs 50%), and decreased the frequency of downer cows in both herds (5 vs 0%), but had not effect regarding the Wisconsin Mastitis Test results. (author). 36 refs, 4 figs, 3 tabs.}
place = {IAEA}
year = {1996}
month = {May}
}