X
XLinkedinWhatsAppTelegramTelegram
0

Ileal digestibility of protein and amino acids from canola meal in weaned piglets and growing pigs

Pelleted canola meal may be a suitable protein source for piglet diets
11 August 2009
X
XLinkedinWhatsAppTelegramTelegram
0
After oil extraction, canola meal has a high content of crude protein (35-40%) and higher neutral detergent fiber (NDF) content than soybean meal because hulls are not eliminated and represent about 30% of the meal which reduces its digestible energy content respect to soybean meal (2.6 vs. 3.4 Mcal/kg). However, canola meal is extensively used as a protein source in growing finishing diets, and it is even included in some piglet diets. Despite being used, no reports exist about its protein and amino acid ileal digestibility in piglets. The aim of this work was to determine the effects of pelleting canola meal on the protein and amino acid apparent ileal digestibility (AID) and specific activity (SA) of pancreatic proteases in weaned piglets and growing pigs.

Two experiments were conducted to measure the apparent ileal digestibility coefficients (AID) of protein and amino acids from canola meal (CM) and a pelleted canola meal (PCM) and their effect on specific activity (SA) of pancreatic proteases in weaned piglets and growing pigs. In experiment one, 24 piglets weaned at 17 days and weighing 5.5 kg were used. Treatments were a reference diet with 200 g of crude protein (CP)/kg elaborated with casein (C) as the sole protein source, a diet containing C-CM and a diet containing C-PCM. These diets were obtained using the reference diet plus 100 g/kg of CM or PCM that substituted an isoproteic mixture of casein and maize starch from reference diet, so that the AID coefficients for their protein and amino acids could be calculated by difference. In experiment two, nine castrated pigs weighing 39.5 kg were used. Treatments were a reference diet with 160 g of CP/kg elaborated with casein (C) as the sole protein source, diet C-CM and diet C-PCM. These diets were obtained using the reference diet plus 300 g/kg of CM or PCM that substituted an isoproteic mixture of casein and maize starch from reference diet.

In piglets, the AID coefficients for casein were highest (P<0.05), those of PCM were intermediate, and those of CM were the lowest. In older pigs, the AID coefficients for casein were highest, and those of CM and PCM were similar (P>0.05). The SA of chymotrypsin, trypsin and carboxypeptidases A and B were lower in piglets than in heavier pigs. Moreover, the SA of trypsin, chymotrypsin, and carboxypeptidase B were lower (P<0.05) in animals fed casein.

It is concluded that in piglets, whereas canola meal was less digestible, pelleted canola meal improved protein and amino acid ileal digestibility, resulting in similar AID coefficients to those of growing pigs.

G Mariscal-Landín, TC Reis de Souza, JE Parra, A Aguilera and B. Mar. 2008.Livestock Science 116:53-62

Article Comments

This area is not intended to be a place to consult authors about their articles, but rather a place for open discussion among pig333.com users.
Leave a new Comment

Access restricted to 333 users. In order to post a comment you must be logged in.

You are not subscribed to this list pig333.com in 3 minutes

Weekly newsletter with all the pig333.com updates

Log in and sign up on the list

Related articles

You are not subscribed to this list Swine News

Swine industry news in your email

Log in and sign up on the list