This study was conducted to determine the effects of tomato pomace (TP) on growth performance and rumen fermentation parameters of sheep. Forty Suffolk × Aletai crossbred ewes were randomly divided into four groups (ten sheep for each group), and sheep in control group (CON), low TP group (LTP), middle TP group (MTP) and high TP group (HTP) were fed total mixed rations containing 0, 30%, 40% and 50% TP, respectively. The pre-trial lasted for 9 days, and the trial lasted for 44 days. The results showed as follows: 1) compared with control group, average daily gain (ADG) of sheep was not affected by feeding low or middle TP (P>0.05), while feeding high TP significantly decreased ADG of sheep (P<0.05); feeding low and middle TP significantly increased dry matter intake (DMI) of sheep (P<0.05 or P<0.01), while feeding high TP significantly decreased DMI (P<0.01); feeding low and middle TP did not affect feed/gain (P>0.05), while feeding high TP significantly increased feed/gain (P<0.05), which had no difference with that of feeding middle TP (P>0.05). 2) The mean of rumen fluid pH was not affected by feeding tomato pomace (P>0.05); ammonia nitrogen (NH3-N) content was not affected by feeding low TP (P>0.05), but was significantly decreased by feeding middle and high TP (P<0.01); the concentrations of acetate, propionate and total volatile fatty acid (after feeding for 3, 6 and 9 hours) were not affected by feeding low and middle TP (P>0.05), but the concentrations of acetate (after feeding for 9 hours) and propionate (after feeding for 6 and 9 hours) were significantly increased by feeding high TP (P<0.05); acetate/propionate was decreased by feeding TP, and the effects of feeding high TP were significant (P<0.05). Under the conditions in the present study, the substitution of dried alfalfa hay by TP in the diet at 30% can improve growth performance and rumen fermentation.
WU Anquan, WANG Wenqi, LIU Yanfeng, WANG Shichang, LUO Yongming, GUO Tongjun
. Effects of Tomato Pomace on Growth Performance and Rumen Fermentation Parameters of Sheep[J]. Chinese Journal of Animal Nutrition, 2014
, 26(8)
: 2289
-2295
.
DOI: 10.3969/j.issn.1006-267x.2014.08.033
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