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The effect of tributyrin supplementation to milk replacer on growth performance, diarrhea frequency, and blood biochemical parameters of dairy calves.

S. Liu

Events

06-22-2020

Abstract:

48
The effect of tributyrin supplementation to milk replacer on growth performance, diarrhea frequency, and blood biochemical parameters of dairy calves.
S. Liu*, J. Zhou, J. Wu, J. Ma, Z. Cao. State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University Beijing, China.

The aim of this study was to evaluate the effect of rumen unprotected tributyrin supplementation to milk replacer on performance, diarrhea frequency and blood concentrations of metabolite of dairy calves. Forty-eight newborn Holstein female calves (39.6 � 2.7 kg of BW; mean � SD) were randomly allocated to 3 treatments to assess the effects of supplementing the milk replacer at 2.8 g/kg (TB8) or 5.6 g/kg (TB16) of powder with tributyrin compared with no supplementation (CON). Calves were weaned on d 56 and were raised until the end of this study (d 77). Starter intake, fecal consistency scores, BW and blood were collected. Data were analyzed separately by stage: pre-weaning (d 1 - d 56) and post-weaning (d 57 — d77). All repeated, continuous data were analyzed using the MIXED procedure of SAS. The results showed that during the pre-weaning period, calves in TB8 and TB16 had higher dry matter intake compared with CON, and the average daily gain of TB16 was higher than that of CON. After weaning, calves in TB16 had higher dry matter intake compared with CON, and all treatments had similar average daily gain. Tributyrin addition reduced the diarrhea frequency throughout the study. The results related to blood showed that no differences were found among treatments on concentrations of growth hormones, insulin and total protein throughout the study. The concentration of β-hydroxybutyrate in TB16 was higher than that of CON and TB8 in wk 11, and no differences were found in other time points. The concentrations of plasma endothelin and serum amyloid A in CON increased after weaning, and plasma endothelin concentration was higher than TB16 in wk 9. In conclusion, rumen protected tributyrin supplementation to milk replacer could improve growth performance and reduce diarrhea frequency of calves. Supplementing the milk replacer at 5.6 g/kg of powder performed better.

Keywords: calf, tributyrin.

Biography: My name is Shuai Liu, a Ph.D student from China agricultural university. I am interested in calf nutrition and dairy farm management, and I have been involved in several research programs related to butyrate regulation on calves and national survey on China dairy cattle management, several of which are in progress. I have been to the United States and Ireland for internships and trainings. One publication has been published, and one oral presentation and one poster have been presented in 2019 ASAS Annual meeting.