在本地鸡肉日粮中使用棕色海藻(Eckloniamaxima)作为营养来源受到高膳食纤维水平的限制。用牡蛎蘑菇(平菇)产卵(OMS)接种海藻可以增强用过的蘑菇基质(SMS)的效用。这项研究调查了饲喂增加水平的褐藻SMS对生长性能的影响,生理反应,和博什维尔德公鸡的肉质参数。对总共324只4周龄的Boschveld公鸡进行称重,并随机分配给36个围栏(每个围栏9只鸟),以在每次饮食处理中重复六次。饮食配制如下:标准种植者饮食(CON);和CON含有150g/kg的棕色海藻,以0(SMS0)接种OMS,20(SMS20),30(SMS30),40(SMS40)和50%(SMS50)。饲喂饮食CON的禽类在第7、8、12、14和15周具有比所有其他SMS处理水平最少的采食量(p<0.05)。在第6、7、9和14周,与CON相比,饮食SMS40促进更高(p<0.05)的体重增加(BWG)。在第7周,增益与饲料比线性增加[R2=0.288;p=0.010],11[R2=0.581,p=0.0001]和14[R2=0.389,p=0.004],分别。在第5周观察到BWG的二次反应(p<0.05),白细胞,异嗜性粒细胞,血小板,淋巴细胞,单核细胞,随着OMS水平的增加,相对脾脏和大肠重量。随着OMS水平的增加,屠宰[R2=0.197,p=0.017]和乳房重量[R2=0.197,p=0.020]记录到线性增加。与CON和SMS治疗组相比,饮食SMS0促进更高(p<0.05)的相对盲肠重量。对于胸肉品质参数,均未观察到二次或线性响应(p>0.05)。总之,饲喂褐藻SMS提高了生长性能和屠宰重量,改变了一些血液参数和内部器官,不影响Boschveld公鸡的胸肉质量。基于BWG的二次响应,在基于棕色海藻的Boschveld公鸡饮食中,最佳OMS水平推断为20%。
Use of brown seaweed (Ecklonia maxima) as a nutraceutical source in indigenous chicken diets is limited by high dietary fibre levels. Inoculating seaweeds with oyster mushroom (Pleurotus ostreatus) spawn (OMS) could enhance the utility of the spent mushroom substrate (SMS). This study investigated the effect of feeding incremental levels of brown seaweed SMS on growth performance, physiological responses, and meat quality parameters in Boschveld roosters. A total of 324, 4-week-old Boschveld roosters were weighed and randomly allotted to 36 pens (9 birds per pen) to produce six replicates per dietary treatment. The diets were formulated as follows: a standard grower diet (CON); and CON containing 150 g/kg of brown seaweed inoculated with OMS at 0 (SMS0), 20 (SMS20), 30 (SMS30), 40 (SMS40) and 50% (SMS50). Birds fed diet CON had the least feed intake (p < 0.05) than all the other SMS treatment levels in weeks 7, 8, 12, 14 and 15. Diet SMS40 promoted higher (p < 0.05) body weight gain (BWG) than CON in weeks 6, 7, 9 and 14. Gain-to-feed ratio linearly increased in weeks 7 [R2 = 0.288; p = 0.010], 11 [R2 = 0.581, p = 0.0001] and 14 [R2 = 0.389, p = 0.004], respectively. Quadratic responses (p < 0.05) were observed for BWG in week 5, white blood cells, heterophils, platelets, lymphocytes, monocytes, and relative spleen and large intestine weights as OMS levels increased. Linear increases were recorded for slaughter [R2 = 0.197, p = 0.017] and breast weights [R2 = 0.197, p = 0.020] as OMS levels increased. Diet SMS0 promoted higher (p < 0.05) relative caeca weights than the CON and SMS treatment groups. Neither quadratic nor linear responses (p > 0.05) were observed for breast meat quality parameters. In conclusion, feeding brown seaweed SMS improved growth performance and slaughter weight, altered some blood parameters and internal organs, without affecting breast meat quality of Boschveld roosters. Based on the quadratic response for BWG, the optimum OMS level was deduced at 20% in a brown seaweed-based Boschveld rooster diet.