The size of the lamb at weaning is generally more important than its actual age. Table 1Effect of ewe age (year) on the lambing percentage (lambs born/ewe lambing), lamb mortality up to 12 weeks of age and birth weight (kg), (raw means, for age comparisons numbers with different Lamb Meat Nutrition. lamb that fits the judge that is judging your show. Most market wethers range in age from 6 months to 12 months old when they are exhibited. All stock shows have weight limits and many have age requirements based on the lambs teeth. Nutritionally speaking, lamb meat is a very rich source of minerals, including iron, zinc, calcium, selenium, potassium, copper, and magnesium, as well as various B vitamins. In 2018, the average weight of slaughtered sheep and lamb carcasses per head was 19.4 kilograms, a weight that has remained stable over a number of years. The fat content is usually around 17–21% ( 1 ). • What age should the lamb be? Of course, this will vary by breed. If low lamb weights are a consistent problem, shear (use winter comb) twin bearing ewes at mid pregnancy (70 to 100 days pregnant) as this can increase twin lamb birth weights by 0.5 kg. Record the lamb’s weight and date on a chart. The teeth gradually become longer with wide spaces, eventually falling out, or they may wear down, become loose and fall out. Table 1. Lambs don't need to get as big for the smaller, slower-growing breeds. If the lamb’s daily gain has fallen off, ask a knowledgeable adult for some help in determining why. f. Schedule and store lamb prices. e. Animal health. Variation in teeth eruption Age Teeth Only one … c. Feed quality and quantity now and in future (predicted using feed budget, soil temperatures, wind and rainfall data, weather predictions). Lamb contains varying amounts of fat depending on how much of it has been trimmed away, as well as the animal’s diet, age, gender, and feed. Whats the main factors to you, weight or age? As a rule of thumb, most lambs can be weaned at 60 days of age or 45 pounds, whichever comes first. Wool sheep are fed differently and gain differently and the structure of the animal is different, type of meat and growth is also different. 234 Proceedings of the New Zealand Grassland Association 66:233–237 (2004) Figure 1 Number of lambs born within each birth weight category and the percentage of mortality prior to 12 weeks of age. Estimation of age at this stage is very difficult. Lamb age, weight, growth. Find out what the bottom or lightest weight Lambs as small as 12-14kgs dressed weight (slaughtered, gutted and prepared for market) are supplied as suckling lamb, while some lambs are prepared for market when they reach approximately 40kgs dressed weight. Maybe you want more meat but just not anything over 1 yr. Then you do it maybe at 10 months when its more meaty. 4 ounces of lamb contains nearly 28 grams of protein, but also delivers nearly 2/3 of your saturated fat intake each day, so moderation when eating lamb is strongly suggested. Monitor your lamb’s performance by weighing the lamb every week, in the morning before feeding, and calculate its daily gain since the last weight. Prevent extreme weight loss of ewes during pregnancy (up to 4 kg) as this can reduce twin lamb size by 0.4 kg. If a lamb is slower growing and you like the meat of young lambs, say 3 months, but your lamb is small at that age, then you butcher it at that age if thats what you want. After the teeth have fallen out the sheep is known as a ‘gummy’. d. Feed costs (including supplements). The age that lambs are slaughtered depends on market demands. b. Ewe weight, condition, lactation stage. 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