Appetite and weight changes in an aging Merino sheep rarely arrive as a sudden refusal to eat. They creep: shorter grazing spells, a slower finish at the trough, a frame quietly thinning under several inches of wool. Knowing what is normal ageing, and what is a warning, starts with understanding why an old ewe's eating changes at all.
Worn teeth change how an old Merino eats
Teeth are the most common reason an aging Merino's appetite looks different. Years of grinding coarse pasture wear the molars down and loosen or lose front teeth, so long grass and hay become harder to bite off and chew into a cud. You may see her grazing longer for less return, dropping half-chewed feed, or preferring soft feed at the trough over the field. A ewe with poor teeth also loses condition in winter, when forage is coarsest and her needs are highest. Your vet can check her mouth at a routine visit and tell you honestly how much grazing life those teeth have left, which then shapes how you feed her.
A heavy fleece hides weight loss until it is advanced
Concealment is the Merino-specific trap in watching an old sheep's weight. That dense, valuable fleece can hide protruding ribs and a sharp backbone for months, and a ewe can look round and well while losing real condition underneath. Hands, not eyes, give the truth: feel along her spine and over her ribs and loin regularly, scoring how much flesh covers the bone, and write the score down with the date. A weigh crate or tape, if you have access to one, turns impressions into a trend. Any steady downward drift across two or three checks is information worth acting on early, while feed changes can still reverse it.
Slower movement quietly reduces how much she eats
Movement and appetite are linked in an aging Merino sheep. Stiff joints shorten her walking, so she grazes a smaller area, visits the hay rack less often, and may lie down through part of the day when the flock is feeding. At a shared trough she arrives later and leaves earlier, pushed out by stronger sheep, and each small loss compounds into visible weight loss over a season. Feeding her in a small, calm group, with feed she does not have to compete or travel far for, often restores more condition than any change of feed itself. Watch feeding time from a distance; who gets pushed away tells you as much as what is in the trough.
Some appetite changes are a vet threshold, not ageing
Thresholds matter because not every change in an aging Merino is just age. A sheep who stops eating altogether, stands apart drooling or unable to chew, loses weight rapidly over a couple of weeks, develops scouring that does not settle, or stops chewing her cud needs a vet promptly — those signs point to problems such as serious dental trouble, parasites, or illness rather than gentle decline. Sudden appetite loss in a previously steady old ewe is never something to simply monitor for a month. Keep a short dated record of what you observed and when; a vet deciding how urgently to attend will ask exactly that, and guessing helps nobody.
Feed the sheep in front of you, and review her monthly
Monthly review is what turns observations about an aging Merino into good feeding decisions. Weigh or condition-score her on a rhythm, note what she is actually eating well — softer hay, a soaked feed, the sheltered corner of the field — and adjust her ration and grouping around that evidence rather than a standard flock plan. Older ewes often do best on good-quality, easily chewed forage with feed offered little and often, away from competition. Bring your dated scores and notes to vet visits so management and health are discussed together. Keeping that record inside a KinsLe Pet Passport means the Merino's appetite and weight story is complete whenever a vet or helper needs it.