本研究旨在研究饲粮核黄素水平对鸽子饲养者繁殖性能以及后代乳鸽生长性能和car体性状的影响,以评估鸽子饲养者对核黄素的需求。玉米-豌豆-大豆-小麦-高粱-玉米麸质基本日粮中的天然核黄素含量为1.20mg/kg。不同剂量的核黄素(0、2.5、5、10和15mg/kg)补充基础日粮,产生5种日粮处理,核黄素总水平分别为1.20、3.70、6.20、10.20和16.20mg/kg。一共有120对白王鸽子,60岁,随机分为五个治疗组,每个由24对组成。每对单独饲养8周。实验之后,进行了评估,以评估鸽子饲养者的繁殖性能,以及28日龄时后代雏鸽的生长和car体性状。结果表明,饲粮核黄素水平对体重无显著影响,饲料摄入量,鸡蛋重量,产蛋,和卵子的生育力(p>0.05)。然而,饲喂不含核黄素的鸽子的卵孵化率最低,蛋黄颜色,car体性状,和核黄素状态,同时表现出较高的肝脏重量和肝脏指数(p<0.05)。此外,上述指标显示随着饮食中核黄素水平的增加而线性增加或减少。基于折线回归模型,鸽子饲养者被确定为需要膳食核黄素含量为11.4、13.6、13.4、6.60、4.28、4.47、4.67、6.69和6.82mg/kg以优化孵化率,内脏重量,半内脏重量,乳房肌肉重量,乳房肌肉百分比,肝脏重量,肝脏指数,蛋黄核黄素,和雏鸟血浆核黄素,分别。总之,鸽子饲养者日粮中核黄素的最佳添加剂量为13.6mg/kg。
This study aimed to investigate the effects of dietary riboflavin levels on the reproductive performance of pigeon breeders and the growth performance and carcass traits of offspring squabs to estimate the riboflavin requirement of pigeon breeders. The natural riboflavin content in the basic diet of corn-peas-soybean-wheat-sorghum-corn gluten is 1.20 mg/kg. Different doses of riboflavin (0, 2.5, 5, 10, and 15 mg/kg) were supplemented with the basal diet to produce five dietary treatments with total riboflavin levels of 1.20, 3.70, 6.20, 10.20, and 16.20 mg/kg. A total of 120 pairs of White King pigeons, aged 60 wks, were randomly allocated into five treatment groups, each consisting of 24 pairs. Each pair was individually raised for 8 wks. After the experiment, an assessment was conducted to evaluate the reproductive performance of the pigeon breeders, as well as the growth and carcass traits of offspring squabs at 28 days of age. The results showed that the dietary riboflavin levels had no significant effect on body weight, feed intake, egg weight, egg production, and egg fertility (p > 0.05). However, pigeons fed a diet without riboflavin had the lowest egg hatchability, egg yolk color, carcass trait, and riboflavin status, while exhibiting higher liver weight and liver index (p < 0.05). Moreover, the indices above showed increased or decreased linearly as the level of riboflavin was increased in the diet. Based on the broken-line regression model, pigeon breeders were determined to require a dietary riboflavin content of 11.4, 13.6, 13.4, 6.60, 4.28, 4.47, 4.67, 6.69, and 6.82 mg/kg to optimize hatchability, eviscerated weight, half-eviscerated weight, breast muscle weight, breast muscle percentage, liver weight, liver index, egg yolk riboflavin, and squab plasma riboflavin, respectively. In conclusion, the optimal supplemental dosage of riboflavin in the diets of pigeon breeders is 13.6 mg/kg.