Feeding Behavior of Lactating Dairy Cattle Fed Sorghum-Based Diets and Increasing Levels of Tannic Acid
نویسندگان
چکیده
Tannins have been used to trigger positive effects on ruminal metabolism and increase ruminant production efficiency, since they the supply of dietary protein in small intestine. Increasing levels tannic acid a sorghum-based diet feeding behavior five Holstein/Zebu crossbred lactating dairy cows was evaluated. They were subjected 5 × Latin square experimental design, with fivelevels tannin as dry matter (DM) (0.46, 1.30, 2.60, 3.90, 5.20%). The added established based quantity condensed high-tannin sorghum. Thus, diets 2, 3, 4 supplemented 1.5 g (13% DM), 79.5 (2.6% 157.5 (3.9% 235.5 (5.2% DM) acid, totaling 0.078, 0.156, 0.234, 0.321 kg tannin/day, respectively. Feeding variables included following states events: feeding, drinking, rumination, inactivity; frequency visiting feed water troughs; occurrence urination defecation. Water provided ad libitum, its intake measured during periods behavioral data collection. use two sources (hydrolysable condensed) corresponding total level 5.20% (on DM basis) cattle does not affect animals’ health. Tannic can be at 3.93% without inducing variation time spent daily intake. Dairy dilute (5.20%) through greater fragmentation food consumption hours (180 min). astringent caused by are mitigated increasing amount increases, starting 3.90% basis).
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ژورنال
عنوان ژورنال: Agriculture
سال: 2021
ISSN: ['2077-0472']
DOI: https://doi.org/10.3390/agriculture11020172