Livestock is crucial in many countries to reduce poverty as well as elevate the economic growth of particular region. Accordingly, the Payakumbuh region is considered as a vital territory regarding beef cattle breeding in West Sumatra, Indonesia and holds cattle population of about 44,467 head1. Foreign breeds are being introduced to improve productivity in cows. Therefore, most of the smallholders have switched to exotic breeds because of high performance in growth and meat production. But, less reproduction in these exotic breeds is a huge constraint for people. These consequences are because of silent heat periods, late conception, deprived fertilization as well as postpartum sterility.
Scientists have found that investigation regarding blood serum biochemical and hematological traits (red blood cells (RBC), white blood cell (WBC) counts and hemoglobin (Hb) concentration) can improve the reproductive performance2,3. All of these parameters can aid to recognize the disorders including malnutrition, chronic illness, reproductive position and nutrition4. Accordingly, Yuherman and colleagues designed an experiment to examine the hematologic properties of exotic breeds with reproductive trouble, relative to healthy heifers and normal reproductive cows.
In this experiment, possible factors causing metabolic diseases and less reproduction were evaluated. For this purpose, survey was organized to assess the reproduction performance of 160 female Simmental cows of fifteen smallholders in Payakumbuh, West Sumatra, Indonesia. Scientists obtained the blood samples from fifteen female Simmentals having three different reproductive statues (heifers, pregnant and reproductive failure). Afterwards; researchers isolated the blood plasma and examined its hematological characteristics, protein concentration and mineral contents including Ca, P, Mg, Fe, Mn, Cu as well as Zn. Samples of fodder were obtained from 15 farms to determine dominant species and mineral composition. Moreover, scientists examined the through completely randomized 3×5 design for blood parameters and 4×3 design for forage minerals.
Yuherman and team noted that approximately one-third of female cows exhibit reproductive disorders. Moreover, the animals were also seemed to be lacking in protein, Ca, P, Mn and Cu. Hence, scientists concluded that Anestrus and repeated insemination was the main culprit behind reduction in reproductive efficiency followed by poor fertilization in exotic breeds regarding smallholders which lead to delay or failure to produce calves. Moreover, reproductive turbulences in Simmental cows were interlinked with nutrient deficiencies. These outcomes will pave a ways towards better management practices, as well as nutritional and physiological measures of animals in the particular territory.
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