p.g.t. Ust'-Kinel'skiy, Samara, Russian Federation
Samara, Russian Federation
Samara, Russian Federation
Cel' issledovaniy – povyshenie kachestvennyh pokazateley remontnogo molodnyaka v usloviyah intensivnoy tehnologii proizvodstva moloka. Materialom dlya issledovaniya sluzhili telki, poluchennye ot treh grupp vy-sokoproduktivnyh korov s urovnem molochnoy produktivnosti 5500-6500 kg moloka. Kontrol' rosta i razvitiya telok provodilsya putem izucheniya dannyh ezhemesyachnogo vzveshivaniya i vzyatiya lineynyh promerov. Dlya harakteristiki vosproizvoditel'noy sposobnosti telok izuchalis' pokazateli vozrasta i zhivoy massy pri pervom osemenenii; oplodotvoryaemost' v pervuyu, vtoruyu i posleduyuschie polovye ohoty; indeks osemeneniya. Ves' poluchennyy material obrabotan metodom variacionnoy statistiki po G. F. Lakinu; razlichiya sravnivaemyh pokazateley proveryalis' na dostovernost' s ispol'zovaniem kriteriya St'yudenta, s pomosch'yu programmnogo kompleksa Microsoft Excel. Ustanovleno, chto prodolzhitel'nost' suhostoynogo perioda korov vliyaet na rost i razvitie telyat, poluchennyh ot nih. Vyyavleno, chto prodolzhitel'nost' suhostoynogo perioda u korov-materey 80 dney yavlyaetsya optimal'noy pri urovne molochnoy produktivnosti korov 5500-6500 kg moloka, chto sposobstvuet uvelicheniyu srednesutochnogo prirosta na 15-22% u telok, po sravneniyu s ih sverstnicami, u kotoryh prodolzhitel'nost' suhostoynogo perioda korov-materey sostavila 60 dney. Vozrast i zhivaya massa pri pervom osemenenii u telok, poluchennyh ot korov-materey, s prodolzhitel'nost' suhostoynogo perioda 80 dney, sostavila 18,2 mesyaca s zhivoy massoy 420 kg. Na os-novanii provedennyh issledovaniy predlozheno optimizirovat' prodolzhitel'nost' suhostoynogo perioda u vyso-koproduktivnyh korov v usloviyah intensivnoy tehnologii proizvodstva do 80 dney. Odnako pri etom neobhodimo uchityvat' tehnologiyu kormleniya i soderzhaniya matochnogo pogolov'ya, tehnologiyu vyraschivaniya remontnogo mo-lodnyaka i porodnost' zhivotnyh.
suhostoy, otel, massa, prirost, indeks, koefficient
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