The reproductive performance of a sheep flock on a mating schedule of three restricted periods per year

שלום

עברית

מדריך מקוצר למשתמש מדריך מפורט למשתמש

חפש...

הספר "אוצר וולקני"

אודות

תנאי שימוש

פותח על ידי קלירמאש פתרונות בע"מ -

The reproductive performance of a sheep flock on a mating schedule of three restricted periods per year

Year: 

1985

Source of publication :

Livestock Production Science

Authors :

אמיר, דוד

;

שינדלר, חיים

.

Volume :

Co-Authors: 

Schindler, H., Institute of Animal Science, ARO, The Volcani Center, PO Box 6, Bet Dagan, 50250, Israel
Amir, D., Institute of Animal Science, ARO, The Volcani Center, PO Box 6, Bet Dagan, 50250, Israel

From page: 

35

To page: 

42

(

Total pages: 

8

)

Link :

The reproductive performance of a sheep flock on a mating schedule of three restricted periods per year

Abstract: 

A Finn × Merino and Finn × Awassi flock was exposed to three four-week mating periods per year, viz. June and December-January (which are transient periods between seasonal anoestrus and cyclic activity), and September (which is the peak season of cyclic activity). During the 30-month observation period, 177 ewes passed through the flock, totalling 3821 ewe-months, including ewes which were culled or died. The average number of ewe-months per lambing was 9.2. The percentage of lambings (number of lambings divided by number of scheduled matings) was 74.2. 73.6% of consecutive lambings succeeded a previous lambing that occurred at the scheduled time. The lambing percentages from September, December-January and June matings were 83.8, 81.9 and 58.6 (P < 0.01), respectively. © 1985.