Veterinary Economics and Farm Management, Department of Animal Wealth Development, Faculty of Veterinary Medicine, Benha University, Benha, 13736, Egypt.
Animal and Poultry Production, Department of Animal Wealth Development, Faculty of Veterinary Medicine, Benha University, Benha, 13736, Egypt.
Vet Res Commun. 2021 Dec;45(4):381-397. doi: 10.1007/s11259-021-09819-x. Epub 2021 Aug 30.
Male broiler chicks (135 Indian River chicks (IR) and 135 Cobb chicks; n = 270) were weighed, wing banded, and distributed randomly into three iso-energetic and iso-nitrogenous diet groups for each breed (triplicate design, 45 bird/group, 15 bird/replicate). The chicks were fed the diets with levels of 0, 4, or 6% sun-dried tomato pomace (SDTP), respectively, for 42 consecutive days to determine the effect of consuming different levels of SDTP on growth performance, economic efficiency, meat quality, and gene expression in IR and Cobb broiler chickens. The inclusion of up to 6% SDTP in the diet of IR or Cobb chickens had no negative impact on growth performance parameters. Chickens from both the IR and Cobb breeds fed a diet containing 4% or 6% SDTP consumed more feed than those fed a diet containing 0% SDTP. Concomitantly, the groups fed a 6% SDTP diet of IR breed incurred a significantly higher feed cost, total variable cost (TVC), and total cost (TC). The inclusion of up to 6% SDTP in the feed of both breeds resulted in a non-significant increase in return parameters. The ultimate pH decreased as the SDTP concentration increased, with no significant differences in water holding capacity (WHC) or drip loss (48 h). No alteration in the mRNA expression of hepatic growth hormone receptor gene (GHR) or insulin like growth factor-1 (IGF-1) was found among the treatments for either the IR or Cobb breeds. Thus, up to 6% SDTP can be added to the diet of IR and Cobb broiler chickens without any adverse effects on the examined parameters.
雄性肉仔鸡（135 只印第安河鸡（IR）和 135 只考伯鸡；n=270）称重、翅号并随机分为三组等能量和等氮饲料组，每组 270 只（三重复设计，每组 45 只鸡，每组 15 只鸡）。小鸡连续 42 天分别用 0、4 或 6%晒干的番茄渣（SDTP）的饮食喂养，以确定不同水平的 SDTP 对 IR 和考伯肉鸡生长性能、经济效益、肉质和基因表达的影响。在 IR 或考伯鸡的饮食中添加高达 6%的 SDTP 对生长性能参数没有负面影响。饲喂 4%或 6%SDTP 饮食的 IR 和考伯鸡比饲喂 0%SDTP 饮食的鸡消耗更多的饲料。同时，饲喂 IR 品种 6%SDTP 饮食的组饲料成本、总可变成本（TVC）和总成本（TC）显著更高。在两种品种的饲料中添加高达 6%的 SDTP 导致回报参数没有显著增加。随着 SDTP 浓度的增加，最终 pH 值降低，持水能力（WHC）或滴水损失（48 小时）没有显著差异。IR 和考伯品种的肝脏生长激素受体基因（GHR）或胰岛素样生长因子-1（IGF-1）的 mRNA 表达没有因处理而发生变化。因此，在不影响检查参数的情况下，IR 和考伯肉鸡的饮食中可添加高达 6%的 SDTP。
