Vidya B, Venkateshwarlu M, Nagalakshmi D, Sarat Chandra A, Chinni Preetham V, Nalini Kumari N
Department of Livestock Farm Complex, College of Veterinary Science, Rajendranagar, PVNR TVU, Hyderabad, India.
Department of Animal Nutrition, College of Veterinary Science, Rajendranagar, PVNR TVU, Hyderabad, India.
PLoS One. 2022 May 26;17(5):e0268893. doi: 10.1371/journal.pone.0268893. eCollection 2022.
Guar meal (GM) can be considered as an alternative protein source for the livestock and has a potential value as a feed to animals with a high protein content ranging between 45-55%. A study was conducted to evaluate the effect of partial replacement of groundnut cake (GNC) with guar meal (GM) on reproductive efficiency, hormone profile, antioxidant status in Deccani ewes fed sorghum stover based complete feed blocks (SSCFB). Twenty-one non-pregnant Deccani ewes (b. wt. 23.34 ±0.40 kg; 2-4 years old and body condition score 2.51±0.56) were randomly divided into three groups to contain 7 animals each in a completely randomized design. Three dietary treatments viz. S1: conventional feeding (sorghum stover and concentrate mixture fed separately in 50:50 ratios to meet the requirement), S2: SSCFB with GNC as protein supplement in concentrate mixture and S3: SSCFB with GM replacing GNC nitrogen of S2 at 50% level. The ewes were synchronised for estrus with progesterone impregnated intravaginal sponges and naturally mated. The ewes were fed at the rate of 3.1 and 3.7% of their body weight from 1st day of experiment-to 108th day of gestation and from 108th day of gestation to till lambing, respectively. The replacement of 50% of GNC nitrogen with GM and densification of diet had no effect (P>0.05) on average DMI (g), antioxidant status, progesterone concentration, conception rate, non return rate, no of matings per service, lambing rate, body weights of lambs at birth, 15 and 30 days of age. GNC can be partially replaced by GM in the ewes diet without any adverse effect on reproductive parameters, antioxidant status, progesterone concentration and weight of lambs.
瓜尔豆粕（GM）可被视为牲畜的替代蛋白质来源，作为一种蛋白质含量在45%-55%之间的饲料，具有潜在价值。本研究旨在评估用瓜尔豆粕（GM）部分替代花生饼（GNC）对以高粱秸秆为基础的全价饲料块（SSCFB）喂养的德卡尼母羊繁殖效率、激素水平、抗氧化状态的影响。21只未怀孕的德卡尼母羊（体重23.34±0.40千克；2-4岁，体况评分2.51±0.56）被随机分为三组，每组7只，采用完全随机设计。三种日粮处理方式分别为：S1：传统饲养（高粱秸秆和精料混合物按50:50的比例分别投喂以满足需求）；S2：在精料混合物中添加GNC作为蛋白质补充剂的SSCFB；S3：用GM替代S2中50%水平的GNC氮的SSCFB。母羊用含孕酮的阴道海绵栓进行发情同步处理并自然交配。从实验第1天到妊娠第108天以及从妊娠第108天到产羔，母羊分别按其体重的3.1%和3.7%的比例投喂。用GM替代50%的GNC氮和日粮致密化对平均日采食量（克）、抗氧化状态（P>0.05）、孕酮浓度、受孕率、返情率、每次配种的配种次数、产羔率、出生时、15日龄和30日龄羔羊体重均无影响。在母羊日粮中，GNC可被GM部分替代，而对繁殖参数、抗氧化状态、孕酮浓度和羔羊体重均无不良影响。
