Effects of combining recombinant bovine growth hormone and anabolic implants on growth performance and dietary energetics of Holstein bull calves fed finishing diets

VICTOR GONZALEZ-VIZCARRA; MARIA LOPEZ-SOTO; CAROLINA PUJOL-MANRIQUEZ; JESUS URIAS-ESTRADA; ALBERTO BARRERAS SERRANO; JOSE CALDERON-CORTES; GILBERTO LOPEZ-VALENCIA; FRANCISCO MONGE-NAVARRO; ALEJANDRO PLASCENCIA

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Effects of combining recombinant bovine growth hormone and anabolic implants on growth performance and dietary energetics of Holstein bull calves fed finishing diets

机译：重组牛生长激素与合成代谢植入物结合对饲喂日粮的荷斯坦公牛犊生长性能和膳食能量的影响

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Twenty-one Holstein bull calves (368 ± 5.2 kg) were used in order to evaluate the effects of combining recombinant bovine growth hormone (bST) and anabolic implants on growth performance and dietary energetics. Steers were assigned (7 repetitions/treatment) to individual pens (16 m2) equipped with automatic waterers and 1.2 m fence-line feed bunks. The experiment lasted 56 days. Treatments were: 1) no bST, no implant; 2) implant; and 3) bST + implant. Compared to implanted cattle, the combination of exogenous bovine somatotropin and anabolic implants did not enhance growth performance or observed dietary energy. Compared to nonimplanted cattle, anabolic implants increased dry matter intake (DMI, 8.3%), average daily gain (ADG, 18.5%), gain efficiency (ADG:DMI; 7.9%), dietary net energy (6%), and apparent energy retention per unit of DMI (7%). Implantation reduced the estimated maintenance coefficients of intact Holstein calves by around 17%. The combinations of exogenous bovine somatotropin and anabolic implants did not enhance the growth performance or dietary energy of intact Holstein cattle fed a high-energy finishing diet.

机译：为了评估重组牛生长激素（bST）和合成代谢植入物对生长性能和饮食能量的影响，使用了二十一种荷斯坦牛犊（368±5.2 kg）。将牛（每处理7次重复）分配给配有自动饮水器和1.2m栅栏饲槽的单个钢笔（16平方米）。实验持续了56天。治疗方法是：1）没有bST，没有植入物; 2）植入; 3）bST +植入物。与植入的牛相比，外源性牛生长激素和合成代谢植入物的组合不能提高生长性能或观察到的饮食能量。与未植入的牛相比，合成代谢植入物增加了干物质摄入量（DMI，8.3％），平均日增重（ADG，18.5％），增效（ADG：DMI; 7.9％），饮食净能量（6％）和表观能量每单位DMI的保留率（7％）。植入使完整的荷斯坦犊牛的估计维持系数降低了约17％。外源性牛生长激素和合成代谢植入物的结合并不能提高喂食高能完成日粮的完整荷斯坦牛的生长性能或日粮能量。

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《Turkish Journal of Veterinary and Animal Sciences》 |2016年第5期|共4页
作者
VICTOR GONZALEZ-VIZCARRA; MARIA LOPEZ-SOTO; CAROLINA PUJOL-MANRIQUEZ; JESUS URIAS-ESTRADA; ALBERTO BARRERAS SERRANO; JOSE CALDERON-CORTES; GILBERTO LOPEZ-VALENCIA; FRANCISCO MONGE-NAVARRO; ALEJANDRO PLASCENCIA;
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中图分类动物医学（兽医学）;
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1. The influence of recombinant bovine somatotropin on dietary energy level-related growth of Holstein-Friesian bull calves. [J] . Buonomo?F Journal of animal science . 2000,第3期

机译：重组牛生长激素对荷斯坦-弗里斯牛犊牛饮食能量水平相关生长的影响。
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3. Effects of replacing partially dry-rolled corn and soybean meal with different levels of dried distillers grains with solubles on growth performance, dietary energetics, and carcass characteristics in hairy lambs fed a finishing diet [J] . Castro-Perez B. I., Estrada-Angulo A., Rios F. G., Small Ruminant Research . 2014,第1a3期

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4. Effects of dietary inclusion of soy oil on growth performance, carcass characteristics, serum metabolites, hormones, and meat quality in finishing pigs [C] . H.J.Xu, W.J.Tang, W.Du, Progress in functional amino acids and carbohydrates for animal production . 2009

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5. Anabolic Hormone Exposure During Various Stages of Growth: Effects on Post-Weaning Performance, Frame Size, and Carcass Characteristics of Calf-Fed Steers [D] . Gentry, Wesley W. 2019

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机译：配制了六种实用饮食，分别含有2.6（基础饮食），48.9、95.5、189.83、382.4、779.53 mg / kg维生素C饮食。喂食8周后，分析了幼崽河豚的生长性能，抗氧化剂状态和先天免疫力。结果表明，补充维生素C的鱼饲料的比生长速率和蛋白质效率比显着高于对照组的鱼。饮食中的维生素C显着上调了生长激素受体和胰岛素样生长因子的表达水平。喂鱼的维生素C饮食可提高血细胞数量和呼吸爆发活性。饮食中的维生素C水平显着影响血清碱性磷酸酶，谷氨酸-丙酮酸转氨酶和谷氨酸-草酰乙酸转氨酶的活性。补充维生素C的鱼饲料日粮中肝超氧化物歧化酶，谷胱甘肽过氧化物酶和过氧化氢酶活性增加，但丙二醛活性降低。此外，我们发现饮食中的维生素C可以显着上调肝脏中免疫相关基因（HSP70，HSP90，BAFF，TNF-α和IL-6）的表达水平。这些结果表明，饮食中的维生素C可以显着影响河豚的生长性能，抗氧化状态和先天免疫力。

Effects of combining recombinant bovine growth hormone and anabolic implants on growth performance and dietary energetics of Holstein bull calves fed finishing diets

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