PMID: 11325184Apr 28, 2001Paper

Usefulness of subjective ovine milk scores: I. Associations with range ewe characteristics and lamb production

Journal of Animal Science
G D SnowderT R Kellom

Abstract

Range ewes are commonly evaluated for milking ability by producers to determine the ewe's ability to rear lamb(s). The U.S. Sheep Experiment Station has subjectively scored (low, average, high) a ewe's milking ability within 24 h of lambing for many years. The relationship of subjective milk scores with lamb production was investigated using lambing records of Columbia (n = 1,731), Polypay (n = 1,129), Rambouillet (n = 1,704), and Targhee (n = 1,638) ewes. The incidence of high milk scores increased from less than 10% at first parity to 29 to 40% at second and greater parities. At maturity, Columbia ewes (38%) had the highest percentage of high milk scores. A positive association existed between ewe BW and her milk score at third and later parities. Ewes with high milk scores gave birth to heavier lambs (P < 0.05), whereas ewes with low milk scores were associated with lighter (P < 0.05) lambs at birth. Ewes with low milk scores weaned less (P < 0.05) total weight than ewes with better milk scores across all age groups for all breeds. Lighter weaned litter weights from ewes with low milk scores were linked to lighter birth weights and fewer weaned lambs. Differences for litter weight weaned between ewes with average and high mi...Continue Reading

Citations

Sep 23, 2018·Tropical Animal Health and Production·Amel DhaouiMohamed Hammadi
Aug 7, 2017·Journal of Dairy Science·Vera C FerreiraGuilherme J M Rosa
Mar 24, 2012·Animal : an International Journal of Animal Bioscience·S M MathesonC M Dwyer

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