Cornell Sheep Program - Lambing records at the Cornell Sheep Farm

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Lambing records at the Cornell Sheep Farm

STAR management

Past summaries (year and lambing season):

	Lambing season
Item	January 08	March 08	June 08	August 08	November 08	Year
Lambing dates	31 Dec 07 – 23 Feb	7 Mar – 20 Apr	8 May - 23 Jun	12 Aug - 8 Sep	2 Oct - 22 Nov	1 Jan 08 - 22 Nov 08
Lambings	256	248	123	36	196	858
Lambs delivered	437	395	189	64	320	1402
Lambs delivered per lambing	1.71	1.59	1.54	1.78	1.63	1.63
Lambs born alive	422	369	182	60	307	1337
Lambs born alive per lambing	1.65	1.49	1.48	1.67	1.57	1.56
Lambs alive at 60 days	346	265	146	57	286	1100
Lambs alive at 60 days per lambing	1.35	1.07	1.19	1.58	1.46	1.28
Death loss at 60 days, % of delivered	20.8	32.9	22.8	12.5	10.6	21.5
Death loss at 60 days, % of alive at birth	18.0	39.5	36.0	6.7	6.8	17.7

Ewes lambing: 668 (190 ewes lambed twice during the year) so the annual lambs surviving to weaning per ewe was 1.65.
Lambings per ewe in the past year: 1.28.
Comments on lambing rates and lamb mortality
Current ewe age distribution

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