+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

The effect of liveweight and liveweight gain of ewes immediately post-weaning on the liveweight and survival of subsequent lambs

The effect of liveweight and liveweight gain of ewes immediately post-weaning on the liveweight and survival of subsequent lambs

Animal Production Science 52(6-7): 491-496

Thirteen-hundred and sixty-seven Romney mixed-aged ewes were randomly allocated to one of two liveweight gain treatments (high vs maintenance) from weaning of one litter of lambs until 71 days before the subsequent breeding (a period of 42 days). The aims of this study were first to determine whether ewe liveweight or liveweight gain treatment before rebreeding affected the number and liveweight of lambs produced and reared in the following season, and second, to identify whether the birth rank of the dam or the grand-dam affected the number, survival or liveweight of their lambs. Liveweight gain during the 42-day treatment period was greater (P < 0.05) in the high than maintenance treatment (87 +/- 6 vs 4 +/- 6 g/day, respectively), although it did not influence (P > 0.05) number of fetuses, lambs born or reared per ewe or total weight of lambs born or weaned per ewe. Ewe liveweight at weaning (113 days before rebreeding), and liveweight gain between the weaning and rebreeding, explained only a minor proportion of the variation in lamb liveweight at birth and weaning in the following season. Birth rank of the ewe or of the ewe's dam did not (P > 0.05) influence liveweight or number of lambs born or weaned. In conclusion, this experiment indicated that liveweight and liveweight gain from weaning until rebreeding in the flock investigated had only a very minor influence on lamb production. Therefore, there appears to be little advantage in specifically managing ewes during this period to gain considerable amounts of liveweight.

Please choose payment method:

(PDF emailed within 0-6 h: $19.90)

Accession: 066261957

Download citation: RISBibTeXText

DOI: 10.1071/an11215

Related references

Effect of liveweight at the start of the breeding period and liveweight gain during the breeding period and pregnancy on reproductive performance of hoggets and the liveweight of their lambs. New Zealand Journal of Agricultural Research 53(4): 355-364, 2010

The effect of cow age and management on winter liveweight gain, liveweight at calving and subsequent effects on dairy production in a seasonal supply herd. Proceedings of the New Zealand Society of Animal Production 51: 277-282, 1991

Effect of body covers on the liveweight gain of heifer replacement calves and yearlings, and the liveweight gain and milksolids production of dairy cows. Proceedings of the New Zealand Society of Animal Production 56: 266-269, 1996

Effect of season, year and initial liveweight on liveweight gain and feeding efficiency in Western Sudan Baggara cattle. Indian Journal of Animal Sciences 69(6): 430-432, 1999

Effect of dietary fish oil supplied to pigs from weaning to 60 kg liveweight on performance, tissue fatty acid composition and palatability of pork when slaughtered at 100 kg liveweight. Journal of Animal and Feed Sciences 8(3): 441-456, 1999

Feed conversion efficiency in high liveweight gain and low liveweight gain Friesian bulls. Proceedings of the New Zealand Society of Animal Production 33: 206-207, 1973

Effects of liveweight gain and liveweight loss on body composition of sheep. Canadian Journal of Animal Science 71(4): 1281, 1991

Variations of net requirements for cattle growth with liveweight, liveweight gain, breed and sex. Energy and protein feeding standards applied to the rearing and finishing of beef cattle Proceedings of a seminar in the EEC programme of research on beef production, held in Theix, France, 13-16 November 1979: 99-118, 1980

Effects of liveweight gain of 15monthold Angus heifers during the first trimester of pregnancy on liveweight and milk intake of their calves. New Zealand Journal of Agricultural Research 52(1): 39-46, 2009

Effect of liveweight and condition score of ewes at mating, and shearing mid-pregnancy, on birthweights and growth rates of twin lambs to weaning. New Zealand Veterinary Journal 52(3): 145-149, 2005

Effect of liveweight gain of pregnant 15-month-old Angus heifers on the milk intake of their first calves and the liveweight of their first and second calves. Animal Production Science 49(2): 112-120, 2009

Relationships between age, liveweight and liveweight gain of Japanese Black heifers and steers grazing a bahiagrass pasture under supplementation at the Sumiyoshi Livestock Farm. Bulletin of the Faculty of Agriculture, Miyazaki University 42(1/2): 51-61, 1996

Response of additional ewe lamb liveweight during gestation on birth and weaning weight of offspring and liveweight of the ewe lamb at weaning. Animal Production Science 50(5-6): 528-532, 2010

An average daily liveweight gain of coarse-wool lambs at different birth and weaning dates. Mezhdunarodnyi Sel' skokhozyaistvennyi Zhurnal (4): 63, 2005

Influence of autumn liveweight during pregnancy on post partum liveweight of angus heifers and their spring born calves. New Zealand Journal of Experimental Agriculture 13(3): 225-230, 1985