Details

Autor(en) / Beteiligte

• Ma, Wenfeng
• Lv, Yi
• Guo, Liang
• Wang, Zhanbin
• Zhao, Furong

Titel

Effects of three kinds of protease on growth performance, apparent digestibility of nutrients and caecal microbial counts in weanling pigs

Ist Teil von

• Czech Journal of Animal Science, 2020-01, Vol.65 (10), p.373-379

Ort / Verlag

Prague: Czech Academy of Agricultural Sciences (CAAS)

Erscheinungsjahr

2020

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• This experiment investigated the effects of three single kinds of protease on performance, serum parameters, apparent digestibility of nutrients and caecal microorganisms in weanling pigs. One hundred and ninety-two White × Landrace × Duroc hybrid pigs (7.51 ± 0.81 kg) were allotted to 1 of 4 treatments for 28 days. No protease was added to the control diet and the three experimental diets were supplemented with the same proportion of 10 IU/kg of alkaline, acidic and neutral protease, respectively. The supplementation of alkaline protease increased average daily gain and reduced serum concentrations of cholesterol and triglyceride compared with the control group (P < 0.05). The three single kinds of protease supplementation decreased the levels of serum urea nitrogen and increased the serum concentration of aspartate aminotransferase (P < 0.05). The apparent digestibility of crude protein was increased by the dietary supplementation of alkaline or acidic protease compared with that of pigs in the control group (P < 0.05). Results indicate that the alkaline protease supplementation improved the performance and apparent digestibility of crude protein in weanling pigs.