Comparative analysis of the feeding effects of different combinations of TMR diets on Tan-Hu hybrid lambs

Zhang Junli; Yue Caijuan; Liang Xiaojun

doi:10.20154/j.cnki.issn1672-9692.2024.09.010

Abstract：The experiment aimed to investigate the impact of different combinations of pumpkin seed husk powder,Caragana microphylla powder,and reed grass powder in the diet on the growth performance and blood biochemical indicators of Tan-Hu hybrid lambs.A total of 57 weaned male lambs with an average body weight of about 25 kg and in good health were selected and randomly divided into three groups,with 19 lambs per group,each lamb serving as one replicate.The experiment was divided into two phases:In the first phase,the diet for Group 1 contained 15％pumpkin seed husk powder,15％Caragana microphylla powder,and 7％reed grass powder,which was adjusted to 15％,10％,and 5％respectively in the later phase;Group 2 contained 10％pumpkin seed husk powder,11％Caragana microphylla powder,and 14％reed grass powder in the first phase,and 10％,7.5％,and 11.0％respectively in the later phase;Group 3 contained 20％pumpkin seed husk powder,10％Caragana microphylla powder,and 7％reed grass powder in the first phase,and 20％,7％,and 3.5％respectively in the later phase.The pre-trial period was 10 days,and the formal trial period was 90 days.The results showed as follows:Final weight,average daily gain,average daily feed intake and feed to gain ratio of lambs among all groups were not significantly different(P＞0.05),but the average daily gain of lambs in Group 1 was the highest and the feed to gain ratio was the lowest.The serum albumin(ALB)and immunoglobulin M(IgM)contents of lambs in Group 2 were significantly higher than those in the other two groups(P＜0.05),and the creatinine(CREA)content of lambs was significantly higher than that in Group 3(P＜0.05).According to weight gain and feed cost,the average daily profit of Group 1 was the highest,followed by Group 3,and Group 2 was the lowest.The study indicates that feeding Tan-Hu hybrid lambs with a combination of 15％pumpkin seed husk powder+15％Caragana microphylla powder+7％reed grass in the early phase and 15％pumpkin seed husk powder+10％Caragana microphylla powder+5％reed grass in the later phase can improve their average daily weight gain and increase breeding benefits.