EurekaMag.com logo
+ Site Statistics
References:
47,893,527
Abstracts:
28,296,643
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

The effects of food protein content on the performance of pigs previously given foods with low or moderate protein contents


, : The effects of food protein content on the performance of pigs previously given foods with low or moderate protein contents. Animal Production 52(1): 165-174

An experiment was conducted to study the ability of the pig to recover from the effects of a period on a food deficient in crude protein (CP). Forty young pigs were given free and continuous access to foods with either 150 (L) or 252 (M) g CP per kg in period 1 of the experiment, from 6.3 kg to 13.4 and 12.3 kg live weight respectively. These live weights were expected to give equal lipid-free empty body weights. In period 2, four males and four females from each of the period 1 treatments were given access to either M or a food with 377 g CP per kg (H) to a live weight of 30 kg, when the 32 pigs were killed. Pigs on L took 11 (s.e. 0.6) days longer to complete period 1, and had, at the end of this period, 0.20 (s.e. 0.03) kg less protein and 1.20 (s.e. 0.06) kg more lipid in their bodies than the M pigs, at a common ash weight. In period 2, pigs from L grew at a faster rate (750 v. 633 (s.e.d. 20) g/day), ate food at the same rate (1115 v. 1085 (s.e.d. 35) g/day) and coverted food more efficiently (0.676 v. 0.585 (s.e.d. 0.016) g gain per g food) than those from M. At 30.3 kg live weight the pigs from L had corrected their protein deficit relative to ash and reduced their fatness, so that they had the same protein: ash ratio and only 0.47 (s.e. 0.12) kg more lipid in their bodies than those from M. This was the result of a higher rate of gain of protein and water, a lower rate of lipid gain and similar rate of ash gain by the pigs from L than those from M. In the first 7 days of period 2 the pigs from L gained weight at 1.4 times the rate of those from M. In the final 7 days there was no significant effect of period 1 treatment on growth rate. The pigs from L given food H in period 2 were more efficient than those given M in period 2 (food conversion efficiency (FCE) values of 0.884 and 0.791 respectively; s.e.d. 0.027), but this difference was reversed in the final 7 days (FCE values of 0.521 and 0.603 respectively). It is concluded from these results that a period of eating a food of low protein content produces a reduced protein: ash and an increased lipid: ash ratio in the body and reduced growth rate and efficiency. When subsequently pigs are given a food of sufficiently high protein content, the protein:ash and lipid:ash ratios return to normal. The repletion of labile protein reserves, with their associated water, leads to a substantial increase in the rate of live-weight gain. The lower lipid content of the gain leads to a high efficiency. The duration of these effects depends on the protein content of the food given.


Accession: 002249174

DOI: 10.1017/S0003356100005808

Submit PDF Full Text: Here


Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:
Close
Close

Related references

Kyriazakis, I.S.amataris, C.E.mans, G.; Whittemore, C., 1991: The effects of food protein content on the performance of pigs previously given food with low or moderate protein contents. Animal production 52(1): 165-173

Athanasiadou, S.; Kyriazakis, I.; Jackson, F.; Coop, R.L., 2001: The effects of condensed tannins supplementation of foods with different protein content on parasitism, food intake and performance of sheep infected with Trichostrongylus colubriformis. The aims of the present study were to investigate (1), the potential anthelmintic properties and (2), the nutritional consequences of commercially available condensed tannins on parasitised sheep fed, ad libitum, either a high- or a low-protein fo...

Forbes, J.M.; Shariatmadari, F., 1996: Short-term effects of food protein content on subsequent diet selection by chickens and the consequences of alternate feeding of high- and low-protein foods. 1. Growing male chickens of broiler and layer strains were allowed to eat either a high-protein food (HP) or a low-protein food (LP) for 10 min after an overnight fast and then offered a choice between HP and LP. During the next hour they ate sign...

Chachulowa, J.; Abgarowicz, F.; Olczak, S., 1963: The influence of different protein foods on the amount of ammonia and pH value in the contents of caecum of pigs. The influence of dry skim milk, fish meal, soybean meal and ground sweet lupine on the concentration of ammonia and the pH values of the pigs cecum contents was investigated. The experiment was carried out on 4 (and then on 2) animals with cecum t...

Newport, M.J., 1980: Artificial rearing of pigs 11. effects of replacement of dried skim milk by an isolated soybean protein on the performance of the pigs and digestion of protein. Pigs (21/diet) were weaned at 2 d [days] of age and given liquid diets (200 g dry matter/l) at hourly intervals during a 26 d experiment. Pigs were fed on a scale based on live weight. Diets contained (g/kg DM [dry matter]: dried skim-milk 730 (di...

Lebengartz, I.Z., 1977: Influence of different protein content in food on the composition of serum protein fractions in guinea pigs. Nauchnye Doklady Vysshei Shkoly. Biologicheskie Nauki: 79-81

Kyriazakis, I.; Emmans, G.C., 1992: Selection of a diet by growing pigs given choices between foods differing in contents of protein and rapeseed meal. The objective of the experiment was to test whether the rules that appear to underlie diet selection by pigs given choices between two foods of different crude protein (CP) content, persist when a rapeseed meal with possible goitrogenic effects is...

Jelic, T., 1977: Effect of different amounts of protein and lysine in the diet on the performance, nitrogen retention and amino acid content in the protein of muscle tissue of pigs. Nine diets containing 18, 20 or 22% protein, each with 5.0, 5.5 or 6.0% lysine were given to appetite to Swedish Landrace pigs from 7 to 15 kg liveweight. Protein and lysine were then decreased and the pigs kept to 30 kg liveweight on 16, 18 or 20...

Henry, Y.; Bourdon, D., 1976: Respective effects of amino acid balance (deficiency of lysine) and protein content on performance of growing pigs. Pigs, 60 of average initial weight 24.3 kg and average initial age 93 days, were in 3 groups: one received a diet adequate in crude protein (17% up to 45 kg liveweight and then 14.5%), but deficient in lysine; the second had the same diet with a l...

McCracken, J.J.; Stockdale, R.I., 1989: Voluntary food intake of pigs of high genetic potential fed pellets to appetite: effects of sex and dietary protein content. The results are summarized of the variations in feed intake observed at the Northern Ireland Pig Testing Station, Antrim, in the period 1984-88. Pigs, of either sex, were offered once daily pelleted diets of barley meal, wheat, fish meal, soya 50,...