氨基酸缺乏对母犊牛生长和日粮养分消化代谢的影响

孔凡林,李媛,唐梦琪,马满鹏,付彤,刁其玉,成思源,屠焰

Effects of Amino Acid Deficiency on Growth Development, Dietary Nutrients Digestion and Metabolism in Heifers

FanLin KONG,Yuan LI,MengQi TANG,ManPeng MA,Tong FU,QiYu DIAO,SiYuan CHENG,Yan TU

表5 赖氨酸、蛋氨酸和苏氨酸缺乏对犊牛乳头发育的影响

Table 5 Effects of Lys, Met and Thr deficiency on nipple development of calves

项目 Item	日龄 Days of age	组别 Group				SEM	P值 P-value
项目 Item	日龄 Days of age	PC	PC-Lys	PC-Met	PC-Thr	SEM	P值 P-value
左后 Left rear (mm)	90日龄 90 d	14.9b	17.6a	13.9b	16.2ab	0.45	0.01
	180日龄 180 d	23.5	25.1	23.4	26.4	0.53	0.17
	增长率Growth rate	61.8ab	47.2b	74.1a	63.7ab	3.29	0.03
左前 Left front (mm)	90日龄 90 d	14.9	17.3	14.8	15.9	0.41	0.10
	180日龄 180 d	27.4	28.8	26.2	26.9	0.56	0.40
	增长率Growth rate	81.9	70.3	82.5	69.3	4.19	0.55
右后 Right rear (mm)	90日龄 90 d	14.0b	16.4a	13.8b	15.7ab	0.39	0.03
	180日龄 180 d	20.9	23.3	22.8	24.1	0.53	0.19
	增长率Growth rate	61.3	57.9	71.4	73.0	3.78	0.41
右前 Right front (mm)	90日龄 90 d	15.9b	18.1a	14.7b	15.8b	0.42	0.02
	180日龄 180 d	25.5	28.3	26.2	27.9	0.50	0.14
	增长率Growth rate	53.4ab	45.8b	69.5a	53.6ab	3.05	0.03