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636.2.083.37:636.084.52 (1) |
Крупные жвачные животные. Крупный рогатый скот (200) |
SM ISO690:2012 ДЕНЬКИН, А., ЛЕМЕШЕВСКИЙ, Виктор. Использование обменной энергии у бычков в период выращивания при разном уровне обменного протеина в рационе. In: Ştiinţa Agricolă, 2019, nr. 2, pp. 121-128. ISSN 1857-0003. DOI: https://doi.org/10.5281/zenodo.3625584 |
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Ştiinţa Agricolă | ||||||
Numărul 2 / 2019 / ISSN 1857-0003 /ISSNe 2587-3202 | ||||||
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DOI:https://doi.org/10.5281/zenodo.3625584 | ||||||
CZU: 636.2.083.37:636.084.52 | ||||||
Pag. 121-128 | ||||||
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Experimental investigations carried out using Kholmogory bulls, kept under vivarium conditions, have been aimed to study the effect of different levels of metabolizable protein in the diet on the use intensity of metabolizable energy. The main diet contained 478 g of metabolizable protein and included cereal hay, mixed grass silage and compound feedstuff. According to experimental scheme the bulls were consequently supplied with increasing levels of metabolizable protein (491, 513 and 526 g.) at the expense of partial replacement of the compound feedstuff by feed additives with different protein degradability (sunflower meal or soybean cake). According to the indicators of energy balance, the efficiency of metabolizable energy use for the increase in body weight was established. On the basis of the balance of energy substrates the correlation was determined between substrate expenditures for heat production and expenditures for deposition in body weight gain of bulls during the growing period. When soybean cake (750 g) was supplied with the diet the expenditure of energy substrates for heat production was the highest, that led to the decrease in output gain. When sunflower meal (250 g) was included in the ration the contribution of enegy substrates to gain was most significant |
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Cuvinte-cheie Rations, bulls, metabolizable energy, Metabolizable protein, Substrates, energy balance, Gain, Рационы, Бычки, Обменная энергия, Обменный протеин, Субстраты, Баланс энергии, Прирост |
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<?xml version='1.0' encoding='utf-8'?> <oai_dc:dc xmlns:dc='http://purl.org/dc/elements/1.1/' xmlns:oai_dc='http://www.openarchives.org/OAI/2.0/oai_dc/' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xsi:schemaLocation='http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd'> <dc:creator>Denkin, A.I.</dc:creator> <dc:creator>Lemeşevskii, V.O.</dc:creator> <dc:date>2019-12-27</dc:date> <dc:description xml:lang='en'><p>Experimental investigations carried out using Kholmogory bulls, kept under vivarium conditions, have been aimed to study the effect of different levels of metabolizable protein in the diet on the use intensity of metabolizable energy. The main diet contained 478 g of metabolizable protein and included cereal hay, mixed grass silage and compound feedstuff. According to experimental scheme the bulls were consequently supplied with increasing levels of metabolizable protein (491, 513 and 526 g.) at the expense of partial replacement of the compound feedstuff by feed additives with different protein degradability (sunflower meal or soybean cake). According to the indicators of energy balance, the efficiency of metabolizable energy use for the increase in body weight was established. On the basis of the balance of energy substrates the correlation was determined between substrate expenditures for heat production and expenditures for deposition in body weight gain of bulls during the growing period. When soybean cake (750 g) was supplied with the diet the expenditure of energy substrates for heat production was the highest, that led to the decrease in output gain. When sunflower meal (250 g) was included in the ration the contribution of enegy substrates to gain was most significant</p></dc:description> <dc:description xml:lang='ru'><p>На бычках холмогорской породы в условиях вивария изучили влияние различных уровней обменного протеина в рационе на интенсивность использования обменной энергии. Основной рацион содержал 478 г обменного протеина и включал сено злаковое, силос разнотравный и комбикорм. Согласно схеме опыта, бычкам последовательно повышали уровень обменного протеина в рационе (491, 513 и 526 г) за счет частичной замены комбикорма кормовыми добавками с разной распадаемостью протеина (подсолнечный жмых или соевый жмых). По показателям баланса энергии установили эффективность использования обменной энергии на прирост массы тела. По балансу энергетических субстратов определили соотношение затрат субстратов на теплопродукцию и отложение в приросте массы тела бычков в период выращивания. При введении в состав рационов соевого жмыха (750 г) расход субстратов на теплопродукцию был самым высоким, что способствовало снижению прироста продукции. При введении в рацион подсолнечного жмыха (250 г) вклад субстратов в прирост был наиболее значительным</p></dc:description> <dc:identifier>10.5281/zenodo.3625584</dc:identifier> <dc:source>Ştiinţa Agricolă (2) 121-128</dc:source> <dc:subject>Rations</dc:subject> <dc:subject>bulls</dc:subject> <dc:subject>metabolizable energy</dc:subject> <dc:subject>Metabolizable protein</dc:subject> <dc:subject>Substrates</dc:subject> <dc:subject>energy balance</dc:subject> <dc:subject>Gain</dc:subject> <dc:subject>Рационы</dc:subject> <dc:subject>Бычки</dc:subject> <dc:subject>Обменная энергия</dc:subject> <dc:subject>Обменный протеин</dc:subject> <dc:subject>Субстраты</dc:subject> <dc:subject>Баланс энергии</dc:subject> <dc:subject>Прирост</dc:subject> <dc:title>Использование обменной энергии у бычков в период выращивания при разном уровне обменного протеина в рационе</dc:title> <dc:type>info:eu-repo/semantics/article</dc:type> </oai_dc:dc>