The feeding value of soybeans fed to rats, chickens, catfish and dairy cattle is not altered by genetic incorporation of glyphosate tolerance

(Кормовая ценность сои при кормлении ею крыс, цыплят, сома и молочного скота не может быть изменена путём генетического внедрения устойчивости к глифосату)

Monsanto Company, St. Louis, MO 63167, USA.

Animal feeding studies were conducted with rats, broiler chickens, catfish and dairy cows as part of a safety assessment program for a soybean variety genetically modified to tolerate in-season application of glyphosate. These studies were designed to compare the feeding value (wholesomeness) of two lines of glyphosate-tolerant soybeans (GTS) to the feeding value of the parental cultivar from which they were derived. Processed GTS meal was incorporated into the diets at the same concentrations as used commercially; diary cows were fed 10 g/100 g cracked soybeans in the diet, a level that is on the high end of what is normally fed commercially. In a separate study, laboratory rats were fed 5 and 10 g unprocessed soybean meal 100 g diet. The study durations were 4 wk (rats and dairy cows), 6 wk (broilers) and 10 wk (catfish). Growth, feed conversion (rats, catfish, broilers), fillet composition (catfish), and breast muscle and fat pad weights (broilers) were compared for animals fed the parental and GTS lines. Milk production, milk composition, rumen fermentation and nitrogen digestibility were also compared for dairy cows. In all studies, measured variables were similar for animals fed both GTS lines and the parental line, indicating that the feeding value of the two GTS lines is comparable to that of the parental line. These studies support detailed compositional analysis of the GTS seeds, which showed no meaningful differences between the parental and GTS lines in the concentrations of important nutrients and antinutrients. They also confirmed the results of other studies that demonstrated the safety of the introduced protein, a bacterial 5-enolpyruvyl-shikimate-3-phosphate synthase from Agrobacterium sp. strain CP4.

Исследования кормления животных проводились на крысах, цыплятах-бройлерах, сомах и молочным скоте в рамках программы оценки безопасности для сорта ГМ-сои. Они были разработаны, чтобы сравнить кормовую ценность двух линий глифосат-устойчивой сои (GTS). Исследования длились 4 недели (крысы и молочный скот), 6 недель (бройлеры) и 10 недель (сом). Показатели роста, состава филе (сом), грудных мускул, скопления жировой ткани (бройлеры), производства молока, состава молока и усваиваемости азота (молочный скот) были сравнены с показателями животных, которых кормили родительской (не-ГМ) линией сои. Вывод: все исследования показали аналогичную кормовую (концентрация вредных и важных питательных веществ) ценность для родительский и GTS линий.

PMID: 8598557
Сама статья: The feeding value of soybeans fed to rats, chickens, catfish and dairy cattle is not altered by genetic incorporation of glyphosate tolerance.

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Вложение: 3754374_the_feeding_value_of_soybeans_fed_to_rats.pdf