Effects of Bread Waste Flour Utilization in Cattle Diets on Milk and Meat Productivity
Mahir Hajiyev1 
, Yasin Gozalov2 ,
Zohrab Suleymanov2 , and Kanan Aliyev3*
Abstract. Reducing feed costs and the cost of production is of great importance for increasing the economic efficiency of production in small, medium-sized, and large-scale farms. For this purpose, increasing attention is being paid to the use of by-products as alternative feed resources. Bread waste and bakery product residue flour is a promising feed component rich in carbohydrates, rapidly fermentable, and easily digestible. An experimental feeding trial was conducted through collaboration between the Scientific Research Institute of Animal Husbandry and Fisheries, ATS FOOD LLC, and the Agdash Feed Factory. The aim of the study was to evaluate the effect of incorporating bread waste flour (BWF) into feed mixtures on milk productivity and growth parameters of cattle. The study included 22 lactating cows in a 12-week feeding trial and 11 young cattle in a 50-day feeding trial. Feed mixtures containing 37.5% BWF for lactating cows and 34.0% BWF for young cattle were prepared. Daily milk yield and the main compositional characteristics of milk were evaluated in lactating cows, while changes in live body weight were assessed in young cattle. The results showed that the inclusion of bread waste flour in the feed ration improved milk yield and growth parameters. During the trial period, total milk production increased by 8–10 liters, while live body weight increased by 80–100 kg. The results indicate that the use of BWF as an alternative feed component in cattle feeding is appropriate.
Keywords: bread waste flour, milk productivity, milk fat percentage, live body weight, feed conversion efficiency