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פותח על ידי קלירמאש פתרונות בע"מ -
Mother—offspring relationships in Awassi sheep: III. The effect of different suckling regimes and weaning age on weight gains of lambs in dairy flocks
Year:
1966
Authors :
אייל, עזרא
;
.
וולקני, רענן
;
.
פולמן, ישעיהו
;
.
Volume :
67
Co-Authors:
Folman, Y., The Volcani Institute of Agricultural Research, Rehovot, Israel
Eyal, E., The Volcani Institute of Agricultural Research, Rehovot, Israel
Volcani, R., The Volcani Institute of Agricultural Research, Rehovot, Israel
Facilitators :
From page:
371
To page:
376
(
Total pages:
6
)
Abstract:
1. Three experiments were carried out on 112 Awassi lambs of both sexes, born as singles. During the first 8 or 9 weeks of their life they sucked an average of 78, 108, 53 and 50 kg. of milk per head for 12 hr. per day sucklings in a medium producing flock and 12 hr., 4 hr. and residual sucklings in a high producing flock, respectively. 2. Efficiency of milk utilization was inversely related to amounts of milk consumed by lambs. Average milk to weight gain ratios ranged between 4-3 and 6-3 and between 3-3 and 5-0 for females and males, respectively. 3. Correlation coefficients between amounts of milk sucked and weight gains of lambs during the first 2 months were high and statistically significant, except for the 12 hr. sucklings in the high producing flock and the residue sucklings which enjoyed a liberal supply of concentrates. 4. Average daily weight gain per lamb to 8 or 9 weeks of age, ranged between 162 and 280 and between 168 and 329 g. for females and males, respectively, and was proportional to the amounts of milk consumed. Extension of suckling to the third and fourth months produced no significant differences in rate of gain between lambs that sucked different amounts of milk. It is suggested that the importance of milk during that period was not in its energy value. 5. It is suggested that the continuation of residuesuckling in the third month would be justified as long as the cost of a feed unit supplied to the lamb exceeds by more than 30 % that of a feed unit given to the ewe. There is no justification for the extension ofthe suckling period over the fourth month. © 1966, Cambridge University Press. All rights reserved.
Note:
Related Files :
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More details
DOI :
10.1017/S002185960001738X
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
30533
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:55
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Scientific Publication
Mother—offspring relationships in Awassi sheep: III. The effect of different suckling regimes and weaning age on weight gains of lambs in dairy flocks
67
Folman, Y., The Volcani Institute of Agricultural Research, Rehovot, Israel
Eyal, E., The Volcani Institute of Agricultural Research, Rehovot, Israel
Volcani, R., The Volcani Institute of Agricultural Research, Rehovot, Israel
Mother—offspring relationships in Awassi sheep: III. The effect of different suckling regimes and weaning age on weight gains of lambs in dairy flocks
1. Three experiments were carried out on 112 Awassi lambs of both sexes, born as singles. During the first 8 or 9 weeks of their life they sucked an average of 78, 108, 53 and 50 kg. of milk per head for 12 hr. per day sucklings in a medium producing flock and 12 hr., 4 hr. and residual sucklings in a high producing flock, respectively. 2. Efficiency of milk utilization was inversely related to amounts of milk consumed by lambs. Average milk to weight gain ratios ranged between 4-3 and 6-3 and between 3-3 and 5-0 for females and males, respectively. 3. Correlation coefficients between amounts of milk sucked and weight gains of lambs during the first 2 months were high and statistically significant, except for the 12 hr. sucklings in the high producing flock and the residue sucklings which enjoyed a liberal supply of concentrates. 4. Average daily weight gain per lamb to 8 or 9 weeks of age, ranged between 162 and 280 and between 168 and 329 g. for females and males, respectively, and was proportional to the amounts of milk consumed. Extension of suckling to the third and fourth months produced no significant differences in rate of gain between lambs that sucked different amounts of milk. It is suggested that the importance of milk during that period was not in its energy value. 5. It is suggested that the continuation of residuesuckling in the third month would be justified as long as the cost of a feed unit supplied to the lamb exceeds by more than 30 % that of a feed unit given to the ewe. There is no justification for the extension ofthe suckling period over the fourth month. © 1966, Cambridge University Press. All rights reserved.
Scientific Publication
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