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Young rabbits productive indicators under intensive growing technology
One of the most important production processes in livestock is feeding that provides animals need with energy and nutrients. The need for these substances depends on body weight, age, performance, physiological status, nutritional status and temperature of the surrounding. Complete animals feeding ensures all nutrients provided the optimal value of them. Under conditions of intensive technology of growing attention is paid to balancing rations for both females and calves, with the exchange energy and protein. This technology of rabbits growing bases on dividing the period of growing into suckling and to-raise one. For this technology, rabbits are weaned at 30–40 days of age when they reach the live weight of 850–950 g. To raise continues to 90–100 days of age. During this period the rabbits body weight reaches 2.8–3 kg. According to domestic and foreign scholars in the 21st. century an urgent problem is providing animals with complete proteins because the lack of them negatively impact on animal performance. Protein nutritional value is determined by the quantity and quality of protein in feed. Today's market has different feed ingredients high in protein. These feeds include yeast. However, there are very few publications on yeast biomass in the rabbits diet. Relevance of the research is to study the influence of feed yeast LLC "Polissya production – pilot plant" on the productive performance of rabbits.
The aim of research was to determine the optimal number of studied yeast as part of complete granular animal feed and study their impact on the productive performance of rabbits of White Termonska breed. To achieve this goal scientific, economic and physiological experiments have been conducted. The object of study is use fodder yeast (TU 15. 733336034–001:2005) in the feed for young rabbits. Subject of the research is productive quality, carcass yield, nutrient digestibility of feed. To achieve this goal 75 rabbits of white termonska breed 40 days old (the method groups) were selected. Young rabbits contained indoors under the same conditions (cell batteries). To feed young rabbits full-granulated feed were used in, the structure of which was different content of fodder yeast: 1 control group – 3 % of fodder yeast research 2–5 %, 3–7 %, 4–9 and 5 % – 11 %. The period of the experiment was 50 days.
Feed for rabbits includes the following feed ingredients: middlings com, middlings oats, middlings flour, middlings barley, wheat bran, soybean meal (35 % joint venture), sunflower meal (28 % joint venture), straw winter wheat, yeast, salt, premix (4 %). Nutritional feed for all experimental groups of rabbits was similar. With increasing amounts of fodder yeast reduced the number of soybean meal. Feed with different content of fodder yeast incorporates a positive impact on the productive performance of rabbits and digestibility of nutrients of feed under the intensive cultivation technology. Research has found that the optimal dose of fodder in the fodder yeast of young rabbits white Termonska breed is 9 %. Rabbits of this group are characterized by better indicators of growth. The average increase for the entire period of the experiment in rabbits of this group was the highest and was by 41.1 g, 7.2 % (P<0.05) higher than in the control one. At the end of the experiment, namely at 90 days age, rabbits live weight was 2957 grams, 4.5 % (P<0.001) more than weight of peers. The mass of slaughter and carcass yield was higher than the control group by 6.81 % (P<0.001) and by 1.23 % (P<0.001). In this group of animal figures diet digestibility of nutrients were higher than in the control group peers, but significant difference was noted with crude protein – 2.2 % (P<0.05). Physiological research confirmed the results of scientific and economic experiment on the feasibility of using 9 % of fodder yeast feeds consisting of granulated feed for young rabbits under intensive cultivation technology. Prospects for future research is to study the effects of different quantities of yeast strains feeding on reproductive performance of doe rabbits.
Key words: young rabbits, feed yeast, feed, productive performance, digestibility of nutrients.
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