Search Results - Qi-yu DIAO
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Current research progresses on calf rearing and nutrition in China
Published 2017-12-01Get full textCalves are the reserve forces for dairy cattle. Scientific rearing strategy of calves is the basis of efficient cattle breeding. However, many problems exist in current rearing systems of calves and restrict the sustainable development of dairy cattle in China. The absence of basic research is the m...
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Weaning methods affect ruminal methanogenic archaea composition and diversity in Holstein calves
Published 2019-05-01Get full textThe objective of the present study was to examine the effect of different weaning methods on the ruminal methanogenic archaea composition and diversity in Holstein calves. Thirty-six newborn Holstein bull calves were assigned to 1 of 3 treatments: (1) conventional weaning (d 56) and fed a high propo...
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Effects of different feeding methods and space allowance on the growth performance, individual and social behaviors of Holstein calves
Published 2017-06-01Get full textThe importance of nutrient provisions and weaning methods for calves has been well established over the past few years, while as increasing interest has focused on contribution of animal behavior and their overall performance in production regimes. The present study investigated the effects of feedi...
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Rumen fermentation and bacterial communities in weaned Chahaer lambs on diets with different protein levels
Published 2016-07-01Get full textWe evaluated the effects of diets with different crude protein (CP) levels on growth performance, rumen fermentation and bacterial communities in weaned Chahaer lambs. 128 weaned Chahaer lambs ((20.56±1.43) kg body weight; ram:ewe 1:1) aged (61±1.85) d were randomly allotted to one of four diets wit...
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Growth performance and rumen microorganism differ between segregated weaning lambs and grazing lambs
Published 2016-04-01Get full textTwo feeding patterns of the segregated weaning or grazing in the pasture are carried out worldwide in animal production. To investigate the difference of growth performance and rumen microorganism population related to methane metabolism in the two feeding patterns, three groups of lambs (70 in tota...
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Protein requirements of early-weaned Dorper crossbred female lambs
Published 2017-05-01Get full textThe net protein (NP) and metabolizable protein (MP) requirements of Dorper crossbred female lambs from 20 to 35 kg body weight (BW) were assessed in a comparative slaughter trial. Thirty-five Dorper×thin-tailed Han crossbred lambs weaned at approximately 50 d of age ((19.1±2.37) kg of BW) were used....
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Quantification and prediction of enteric methane emissions from Chinese lactating Holstein dairy cows fed diets with different dietary neutral detergent fiber/non-fibrous carbohydr...
Published 2022-03-01Get full textMethane (CH4) emissions from ruminant production are a significant source of anthropogenic greenhouse gas production, but few studies have examined the enteric CH4 emissions of lactating dairy cows under different feeding regimes in China. This study aimed to investigate the influence of different d...
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Macromineral requirements of Dorper×thin-tailed Han crossbred female lambs
Published 2015-08-01Get full textA comparative slaughter trial was conducted to determine the net mineral requirements for maintenance and growth of Dorper crossbred female lambs raised from 20 to 35 kg of body weight (BW). Thirty-five Dorper×thin-tailed Han crossbred female lambs of (20.3±1.14) kg BW were used: 7 lambs were random...
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Effects of dietary yeast β-glucan on nutrient digestibility and serum profiles in pre-ruminant Holstein calves
Published 2015-04-01Get full textThis study aimed to investigate the effects of dietary supplementation of yeast β-glucan on the nutrient digestibility and serum profiles in pre-ruminant Holstein calves. Forty-two neonatal Holstein calves ((39.6±4.2) kg) were randomly allotted to six groups, and each was offered one of the followin...
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Recent advances in nutrient requirements of meat-type sheep in China: A review
Published 2022-01-01Get full textChina has the world's largest sheep flock and the largest producer of sheep meat by far. However, the nutrient requirements have not been systemically studied and there is a lack of knowledge of nutrient requirement for meat-type sheep in China. Since 2008, the nutrient requirements of meat-typ...
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The Effect of Administration of Rutin on Plasma Levels of Estrogen, Prolactin, Growth Hormone and Gene Expression of Their Receptors in Mammary Glands in Ovariectomized Rats
Published 2012-10-01Get full textThe development of mammary glands, endocrine hormone concentrations and the gene expression of related receptors were measured in ovariectomized virgin rats after adminstration of an estrogen-like plant extract, rutin. Thirty-two ovariectomized virgin Wistar rats were randomly assigned to 4 treatmen...
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Long term effects of artificial rearing before weaning on the growth performance, ruminal microbiota and fermentation of fattening lambs
Published 2022-04-01Get full textEarly life intervention is important to shape the gut microbiome profiles of adult animals due to the tremendous alteration of diet components. Nevertheless, there is still no unified understanding about its long-term effects in lambs. In this study, sixty 20-day-old lambs were assigned into ewe-rea...
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Effects of dietary amylose to amylopectin ratio on growth performance, carcass quality characteristics and meat fatty acids in Chinese Qinchuan cattle
Published 2021-12-01Get full textThis study evaluated the effects of the dietary starch amylose/amylopectin ratio on growth performance, rumen fermentation and blood parameters, carcass characteristics and marbling score, and meat fatty acid profiles and transcriptional changes in the genes involved in the gluconeogenesis pathway i...
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Energy Requirements for Maintenance and Growth of German Mutton Merino Crossbred Lambs
Published 2013-04-01Get full textA comparative slaughter trial and a metabolism trial were conducted to determine the requirement of net energy (NE) and metabolizable energy (ME) by the crossbreed of German Mutton Merino×Inner Mongolia Merino for fattening from 35 to 50 kg of body weight (BW). 49 crossbred female lambs ((33.9±2.3)...
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Energy requirements of Dorper×thin-tailed Han crossbred ewes during non-pregnancy and lactation
Published 2015-12-01Get full textThis experiment was conducted to investigate the energy requirement of Dorper×thin-tailed Han crossbred ewes during non-pregnancy and lactation. Fifteen ewes after parturition were randomly assigned to three treatments: ad libitum (100%) feed intake and 80 or 60% ad libitum intake, and another nine...
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