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首页> 外文期刊>Livestock Science >Use of chemical treatments to reduce antinutritional effects of tannins in salseed meal: Effect on performance and digestive enzymes of broilers
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Use of chemical treatments to reduce antinutritional effects of tannins in salseed meal: Effect on performance and digestive enzymes of broilers

机译：使用化学处理减少盐粉中单宁酸的抗营养作用：对肉鸡生产性能和消化酶的影响

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This study investigated the effects of chemical treatments of salseed (Shorea robusta) meal (SSM), on intake, growth performance, feed efficiency, and activities of digestive enzymes in broilers. Five experimental iso-nitrogenous and iso-caloric diets, one without SSM (control) and four SSM based, were formulated. The four SSM diets differed in the treatment given to the SSM. The USSM diet contained untreated SSM and the three other diets were contained SSM incubated with (820 ml/ kg of SSM DM) distilled water (pH 5.3), 0.67 M acetic acid (pH 2.4), or 0.67 M sodium hydrogen carbonate (pH 8.2) for 12 h at 37 pC. Inclusion of untreated SSM in the diets markedly depressed the feed intake, growth rate and, feed efficiency in broilers. Treatment of SSM with chemicals partly alleviated these negative effects on the performance of broilers. Growth rate of broilers was significantly higher on alkali and water treated SSM diets than on USSM diet. The broilers on alkali treated SSM diet consumed more feed than those on water or acid-treated SSM diets. Alkali and water treatments of SSM significantly improved the feed efficiency in broilers fed SSM diets however; the effect due to acid treatment was negligible. Inclusion of untreated SSM in diets caused the pancreatic hypertrophy and subsequent depression in the activity of chymotrypsin and l-amylase in pancreatic tissue. Treatment of SSM with alkali and water substantially increased the activity of chymotrypsin in the pancreas. The activities of trypsin, chymotrypsin and l-amylase in the jejunum were depressed with USSM diet. This depression in broilers was partly alleviated with alkali and water treatments to SSM. The activities of dipeptidase, sucrase, and maltase in the jejunal and duodenal mucosa were also depressed with USSM diet. Activity of dipeptidase in the duodenal and jejunal mucosa of the broilers fed treated SSM was improved with alkali treatment. It can be concluded that inclusion of SSM in the diets of broilers markedly depressed the activities of pancreatic and intestinal enzymes, feed consumption, and growth rate. Treatment of SSM with water or alkali improved the digestive enzymatic activity, intake, growth, and subsequently feed efficiency in broilers.
机译：这项研究调查了化学处理盐渍（Shorea健壮）粕（SSM）对肉仔鸡的摄入，生长性能，饲料效率和消化酶活性的影响。配制了五种实验性的等氮和等热量饮食，一种不含SSM（对照），四种基于SSM。四种SSM饮食对SSM的治疗有所不同。 USSM日粮包含未经处理的SSM，其他三种日粮包含与（820 ml / kg的SSM DM）蒸馏水（pH 5.3），0.67 M乙酸（pH 2.4）或0.67 M碳酸氢钠（pH 8.2）一起温育的SSM ）在37 pC下放置12小时。日粮中未处理的SSM会显着降低肉鸡的采食量，生长速度和饲料效率。用化学药品处理SSM可以部分减轻这些对肉鸡生产性能的负面影响。用碱和水处理过的SSM日粮的肉鸡生长速度明显高于USSM日粮。用碱处理的SSM日粮的肉鸡比水或酸处理的SSM日粮的肉鸡消耗更多的饲料。 SSM的碱水处理明显改善了饲喂SSM日粮的肉鸡的饲料效率。酸处理的影响可以忽略不计。在饮食中加入未经治疗的SSM会导致胰腺肥大，并随后导致胰组织胰凝乳蛋白酶和L-淀粉酶活性下降。用碱和水处理SSM可以显着提高胰腺胰凝乳蛋白酶的活性。用USSM饮食可以降低空肠中胰蛋白酶，胰凝乳蛋白酶和l-淀粉酶的活性。通过对SSM进行碱和水处理，可部分缓解肉鸡的抑郁。空腹和十二指肠粘膜中的二肽酶，蔗糖酶和麦芽糖酶的活性也因USSM饮食而降低。喂食处理过的SSM的肉鸡十二指肠和空肠黏膜中的二肽酶活性可以通过碱处理得到改善。可以得出结论，肉鸡日粮中包含SSM显着降低了胰腺和肠道酶的活性，饲料消耗和生长速度。用水或碱处理SSM可改善肉鸡的消化酶活性，摄入，生长和饲料效率。

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