The objective of this study was to estimate the breed, heterosis, and recombination effects on different components lactation curve Girolando cattle. dataset used consisted 12,121 purebred cows Holstein (H) Gyr (G) breeds, six H×G crossbred (Girolando). model presents random herd cow, regression coefficient associated with linear effect proportion H heterosis between G [...]

Background: Cellular tolerance to heat stress is mediated by shock proteins (HSPs). The HSPs act as molecular chaperones and are transcribed in response stress. Among different families of these proteins, HSP70 considered be related the development temperature tolerance. Unraveling polymorphism protein genes could a step towards identification genetic markers for selecting heat-tolerant cattle....

This research aimed to determine the effect of dietary treatments and age on fattening process in cattle. Thirty-six Ongole crossbred cattles were allotted into two different three groups, with six replications for 24 weeks period, 4 preliminary followed by 20 data collection at Beef Cattle Research Station (BCRS). The experimental design was completely randomized a 2 x 3 factorial. cattle plac...

In dairy cattle breeding, there is a clear trend toward the use of only few high-yielding breeds. One main reason that efficient breeding programs require certain population size. Since some numerically small breeds are well known for their functional traits, they might be an interesting crossing partner with aim to utilize heterosis. This simulation study investigated transition period impleme...

Relevance. To ensure the profitability of production, it is necessary to use certain schemes for crossing pigs different breeds. Since choice correct scheme can significantly affect final result. Crossbred animals, due effect heterosis, are superior in productive qualities original maternal and paternal The paper presents an assessment meat local young obtained as a result industrial three-bree...

A total of 44 mature chickens (about 50 weeks old) males and females inbred naked necked and Frizzle Feathered chickens were crossed to generate a total of 180 day-old(97 Na x Na and 83 F x F chicks) realized from main and reciprocal crossbreeding were used in the study. Mean dayold weights of the Inbreds( Main crossbreds) were 22.17g, 23.87g, 25.50g for (Na x Na), (F x F) and (Na x F) respecti...