I am a specialist feeding the animals, and in particular feed restriction, and looking for all related activities by feed restricting on sheep.
please look for theory of compensatory growth in ruminant nutrition
Limitation of nutrition in sheep leads to lower their productivity. Lack of essential amino acids in their diet reduces the production of milk, wool, meat, as well as damage to their reproductive capabilities. However, sheep can utilize low-value feeds such as straw, hay, etc. with the addition of urea (nitrogen source), as are the ruminant. My advice is to target your studies to feeding sheep with straw and with the addition of different doses of urea. Good luck!
Its important to know which breed of sheep you have, they differ in growth potential. Some barely grow at rate of 120-250 g/day, and I haven't read any literature on compensatory growth in sheep after restrictive feedings.
As far as my own experience those sheep wont reach the weight max like sheeps without restrictions.
Well, feed restriction in animals is very similar restriction in humans.... in general lines, whats the effects in feed restrictions in humans? reproduction? grown? lactating? fetal devolopment? fectal gowing? down of health level? and etc... is the similar effects in animal with feed restriction...in one micro space this effects promotions the negative relationship beteween symbiosis and host, in ruminal environment... the ruminal chamber is one great environment of production. Carbohydrates, protein microbian, energy, aminoacids...all products of the necessary for sustainability of the mricroorganism and host (in case ruminant) is affect with restriction in take... well, the feed restrict is relation with manufactures...not intake, not production, not sustainability, not life!
When you speak about restriction you have first to define what type of restriction (energy, protein) and the duration of this restriction (days, weeks) because all those parameters could affect the response of the animal to the restriction. Our research team works especially on sheep reproduction and we found that feed restriction can negatively affect the reproduction on both rams and ewes. As for the compensatory growth, of course that it exists on sheep but only if the restriction occurs between the age of 3 and 9 mois, over 9 month the sheep will not reach their adult weight.
I according with Imene, the firt point in you question is define whats the restriction type you promote in sheep? because the effects generals is know, but each restriction type exist one reaction. The second point is study the reaction this specift restriction will promote in sheep, whats the consequences for ndt restriction? whats the consequences you waint for CP waint in shep? reproduction, grown, micro ruminal environment?...exist ones steps for you define one study about one point, and have create one way with this steps for you study one theme, ok? undestand?
Restrict protein and this will limit muscle growth, limit feed level and this will restrict overall growth. There is lots of literature on this. see Hopkins, D.L. and Tulloh, N.M. (1985). Effects of a severe nutritional check in early post‑natal life on the subsequent growth of sheep to the age of 12‑14 months. Journal Agricultural Science 105, 551‑562.
Hopkins, D.L., Stanley, D.F., Toohey, E.S., Gardner, G.E., Pethick, D.W. and van de Ven,R. (2007). Sire and growth path effects on sheep meat production. 2. Meat and eating quality. Australian Journal of Experimental Agriculture 47, 1219-1228.
Hopkins, D.L., Stanley, D.F., Martin, L.C., Ponnampalam, E.N. and van de Ven, R. (2007). Sire and growth path effects on sheep meat production. 1. Growth and carcass characteristics. Australian Journal of Experimental Agriculture 47, 1208-1218.
Make sure that restriction is not administered at a very early age (less than 30% of mature weight) because it will cause stunting. Suggested restriction should be accomplished when the epiphyseal growth plate of the long bones is merged. This happens when animal reached more than 30% of their mature weight. This principle is summarized from several literature on feed restriction in ruminants....There are numerous in the internet.
Effect of restricted feeding and realimentation on feed performance and carcass characteristics of growing lambs1
Mohamed Abouheif; Abdullah Al-Owaimer; Mansour Kraidees; Hassan Metwally; Tarek Shafey
The results obtained in this study have shown that feeding performance was better in the 36 kg limited-fed lambs which underwent compensatory growth, and these lambs had leaner carcasses than the 30 kg lambs at the end of the trial. This indicates that feed restriction of up to 40% for five weeks followed by four weeks of refeeding in the 36 kg Najdi lambs would not offset production and that it would be economically feasible.
Please give more information about the feed restriction. Is that during pregnancy or in non pregnant sheep? In pregnant sheep is that during early or late gestation.
you can say that the feed restriction is a type of stress that affect the reproductive performance as well as intrauterine fetal development.
Hello, i did not work on feed restriction and compensatory growth in sheep. Only in dairy beef cattle (Holstein).
But as a rule of thumb, if working on feed restriction, the restriction should be allowed only in animals when they achieved 25 to 30% of their mature weight so that you will not encounter stunting when allowed to have compensatory growth.
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