Metabolic status and fertility responses of non-lactating cows and heifers following the turn-over from berseem, to concentrates feeding

Other Title(s)

إستجابات الحالة الأيضية و الخصوبة للأبقار الغير حلابة و العجلات إثر التحول من التغذية على البرسيم إلى العلف

Source

Kafr El-Sheikh Veterinary Medical Journal

Issue

Vol. 1, Issue 1 (30 Apr. 2003), pp.849-866, 18 p.

Publisher

Kafr El-Sheikh University Faculty of Veterinary Medicine

Publication Date

2003-04-30

Country of Publication

Egypt

No. of Pages

18

Main Subjects

Veterinary Medicine

Abstract EN

Ten non-lactating cows and 12 heifers were used to study the effect of turn-over from berseem feeding (Trifolium alexandrinum) only, ad libitum, to concentrates on both metabolic and fertility statuses.

These animals were acyclic during the whole 6 months of berseem feeding after which they were turned over to concentrates feeding.

Blood samples were collected once monthly during the last 3 months of berseem feeding and once weekly during the first 3 months after turn-over to concentrates feeding.

Serum metabolites (total protein; albumin, cholesterol and urea) and minerals (Ca, P, Zn, Cu, Fe and Mn) were estimated.

The fertility status in terms of resumption of cyclicity, conception rate (CR) and services per conception (SPC) was followed up after turn-over to concentrate feeding.

Regarding the metabolic profile, there was a significant (P < 0.05) decrease in the serum concentration of urea, cholesterol, Zn, Cu, Mn (in cows), and Fe (in heifers) and significant (P < 0.05) increase in the serum concentration of Mn (in heifers) and Fe (in cows) after turn-over from berseem to concentrates feeding.

On the other hand, the serum concentrations of total protein, albumin, Ca and P showed non-significant variations with the turn-over.

All cows (except one) and heifers resumed cyclicity and 70% of cows and 75% of heifers got pregnant within 90 days post turn-over.

It was noted that both the percentage of cows resuming cyclicity and conception rate increased as well as the service per conception decreased with the decrease of serum concentration of both urea and cholesterol post turn-over.

It could be concluded that feeding on berseem only ad libitum is associated with metabolic disturbances mainly in protein metabolism (as has been indicated by increased serum urea concentration) and imbalance in the trace elements profile which are reflected on the fertility status of these animals.

Such adverse effect was more pronounced in cows than in heifer

American Psychological Association (APA)

Ramun, A. A.& Sad, M. F.. 2003. Metabolic status and fertility responses of non-lactating cows and heifers following the turn-over from berseem, to concentrates feeding. Kafr El-Sheikh Veterinary Medical Journal،Vol. 1, no. 1, pp.849-866.
https://search.emarefa.net/detail/BIM-628598

Modern Language Association (MLA)

Ramun, A. A.& Sad, M. F.. Metabolic status and fertility responses of non-lactating cows and heifers following the turn-over from berseem, to concentrates feeding. Kafr El-Sheikh Veterinary Medical Journal Vol. 1, no. 1 (2003), pp.849-866.
https://search.emarefa.net/detail/BIM-628598

American Medical Association (AMA)

Ramun, A. A.& Sad, M. F.. Metabolic status and fertility responses of non-lactating cows and heifers following the turn-over from berseem, to concentrates feeding. Kafr El-Sheikh Veterinary Medical Journal. 2003. Vol. 1, no. 1, pp.849-866.
https://search.emarefa.net/detail/BIM-628598

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references : p. 860-865

Record ID

BIM-628598