In this study, feed-grade proteinase was added into conventional diets of three-line crossbred （Duroc x Landrace x Large White） piglets, to investigate the effects of feed-grade proteinase on anti-diarrhea capacity,...In this study, feed-grade proteinase was added into conventional diets of three-line crossbred （Duroc x Landrace x Large White） piglets, to investigate the effects of feed-grade proteinase on anti-diarrhea capacity, daily weight gain, feed intake and feed conversion ratio of piglets. The results showed that adding feed-grade proteinase in diets enhanced anti-diarrhea capacity of piglets and improved signifi- cantly production performance and breeding efficiency of piglets. This study provided the reference for rational utilization of feed-grade proteinase in actual production.展开更多
Pork in Taiwan has played an important role in terms of domestic consumption, production and price fluctuation in several decades. This study attempts to investigate the causal relationship between hog and feedstuff p...Pork in Taiwan has played an important role in terms of domestic consumption, production and price fluctuation in several decades. This study attempts to investigate the causal relationship between hog and feedstuff prices in Taiwan by using monthly time series over the period of January 2000 to October 2010. Prices from hog, feedstuff, soybean meal and corn are considered and performed through a multivariate vector autoregressive （VAR） model. As the empirical results, the long-run equilibrium is captured identifying price elasticity among the variables using the Johansen cointegration diagnosis. Then, the Granger causality approach shows that bidirectional relationship is detected running from feedstuff to corn and from soybean meal to hog as well as unidirectional relationship running from corn to hog, from feedstuff to hog and from soybean meal to feedstuff. In the conclusions, we point out to raw material prices of feedstuff, namely corn and soybean meal that have an importance to hog price as the cost of meat production. Pig farmers and policy-makers should understand the behavior of price interactions to manage the risks on hog market and to increase the profitability on suitable price.展开更多
The objective of the study was to evaluate the effect of the nutritional supplement VIUSID vet on the mortality and the productivity behaviour of fattening pigs in a low-input farming system. Two experiments were carr...The objective of the study was to evaluate the effect of the nutritional supplement VIUSID vet on the mortality and the productivity behaviour of fattening pigs in a low-input farming system. Two experiments were carried out at a pig farm in the municipality of Jatibonico, Sancti Spiritus province, Cuba. The farm has a low level of specialization, pigs are fed using local resources such as sugarcane （Saccharum officinarum） juice and locally produced concentrated feed. In both studies, the treatment consisted in administering together with the feed 2.0 g of VIUSID vet per Kg of feed. Results showed that in low-input rearing conditions, supplying VIUSID vet significantly reduced deaths （17.65%） in the pigs treated, favoured leukocyte and lymphocyte counts, and significantly improved weight gain （16.33%） and feed efficiency （14.41%）.展开更多
Previous studies on the Rice-Millet （foxtail millet and common millet） Blended Zone in Chinese Neolithic have not clearly addressed such questions as the importance of primitive rice-millet mixed agriculture to huma...Previous studies on the Rice-Millet （foxtail millet and common millet） Blended Zone in Chinese Neolithic have not clearly addressed such questions as the importance of primitive rice-millet mixed agriculture to human lifestyle and livestock managements within this region, the relationship among the development of the agriculture, paleoenvironment, and cultural interactions, and so on. Here stable carbon and nitrogen isotope analysis of human and pig bones from the Qinglongquan site was conducted, covering two cultural phases, namely the Qujialing Culture （3000 BC to 2600 BC） and the Shijiahe Culture （2600 BC to 2200 BC）. Based on this analysis, we further discussed the diets of ancient humans and pigs in the site, investigated the importance of rice-millet mixed agriculture to human and pig diets, and explored the relationship among the primitive rice agriculture and millet agriculture, cultural interactions, and paleoenvironment. The δ^13C values of human bone collagen （-16.7‰ to -12.4‰, averaging -14.6‰±1.3‰, n=24） revealed that both C3 and Ca foods were consumed, probably from the contribution of rice （C3 plant） and millets （C4 plants） due to the coexistence of these crops at this site. In addition, the human mean δ^13C value suggested that millet agriculture was only minor in human diets. The human δ^15N values （6.6‰ to 10.8‰, averaging 9.0‰±1.2‰, n=24） showed that animal resources played a significant role in human diets, and varied greatly. The mean δ^13C value of the pigs （-14.3‰±2.5‰, n=13） was quite similar to that of the humans, but the mean δ^15N value of the pigs was slightly less （1.3‰） The similar δ^13C and δ^15N values between humans and pigs suggested that the pigs consumed a lot of humans＇ food remains. No correlations of the δ^13C and δ^15N values between humans and pigs showed that both human and pig diets were based mainly on plant foods, which might be related to highly developed rice-millet mixed agriculture at that time. In comparison with the human and pig diets between the two periods, millet agriculture contributed more than 10% in the Shijiahe Culture, if a simple mixing model was used. This apparent dietary shift matched the climatic variation and agricultural development through the time. In warm and humid climate with the expansion of the Qujialing Culture northwards, rice was widely cultivated. However, when the climate was cold and add, northern culture was expanding southwards. Thus, millet agriculture became more important.展开更多
文摘In this study, feed-grade proteinase was added into conventional diets of three-line crossbred （Duroc x Landrace x Large White） piglets, to investigate the effects of feed-grade proteinase on anti-diarrhea capacity, daily weight gain, feed intake and feed conversion ratio of piglets. The results showed that adding feed-grade proteinase in diets enhanced anti-diarrhea capacity of piglets and improved signifi- cantly production performance and breeding efficiency of piglets. This study provided the reference for rational utilization of feed-grade proteinase in actual production.
文摘Pork in Taiwan has played an important role in terms of domestic consumption, production and price fluctuation in several decades. This study attempts to investigate the causal relationship between hog and feedstuff prices in Taiwan by using monthly time series over the period of January 2000 to October 2010. Prices from hog, feedstuff, soybean meal and corn are considered and performed through a multivariate vector autoregressive （VAR） model. As the empirical results, the long-run equilibrium is captured identifying price elasticity among the variables using the Johansen cointegration diagnosis. Then, the Granger causality approach shows that bidirectional relationship is detected running from feedstuff to corn and from soybean meal to hog as well as unidirectional relationship running from corn to hog, from feedstuff to hog and from soybean meal to feedstuff. In the conclusions, we point out to raw material prices of feedstuff, namely corn and soybean meal that have an importance to hog price as the cost of meat production. Pig farmers and policy-makers should understand the behavior of price interactions to manage the risks on hog market and to increase the profitability on suitable price.
文摘The objective of the study was to evaluate the effect of the nutritional supplement VIUSID vet on the mortality and the productivity behaviour of fattening pigs in a low-input farming system. Two experiments were carried out at a pig farm in the municipality of Jatibonico, Sancti Spiritus province, Cuba. The farm has a low level of specialization, pigs are fed using local resources such as sugarcane （Saccharum officinarum） juice and locally produced concentrated feed. In both studies, the treatment consisted in administering together with the feed 2.0 g of VIUSID vet per Kg of feed. Results showed that in low-input rearing conditions, supplying VIUSID vet significantly reduced deaths （17.65%） in the pigs treated, favoured leukocyte and lymphocyte counts, and significantly improved weight gain （16.33%） and feed efficiency （14.41%）.
基金supported by the Knowledge Innovation Project of Chinese Academy of Sciences(Grant No.KJCX3.SYW.N12)National Natural Science Foundation of China(Grant No.40702003)+1 种基金Partner group program of Max Plank Institute and Chinese Academy of Sciences(Grant No.KACX1-YW-0830)Relics Preservation Project of South-to-North Water Diversion
文摘Previous studies on the Rice-Millet （foxtail millet and common millet） Blended Zone in Chinese Neolithic have not clearly addressed such questions as the importance of primitive rice-millet mixed agriculture to human lifestyle and livestock managements within this region, the relationship among the development of the agriculture, paleoenvironment, and cultural interactions, and so on. Here stable carbon and nitrogen isotope analysis of human and pig bones from the Qinglongquan site was conducted, covering two cultural phases, namely the Qujialing Culture （3000 BC to 2600 BC） and the Shijiahe Culture （2600 BC to 2200 BC）. Based on this analysis, we further discussed the diets of ancient humans and pigs in the site, investigated the importance of rice-millet mixed agriculture to human and pig diets, and explored the relationship among the primitive rice agriculture and millet agriculture, cultural interactions, and paleoenvironment. The δ^13C values of human bone collagen （-16.7‰ to -12.4‰, averaging -14.6‰±1.3‰, n=24） revealed that both C3 and Ca foods were consumed, probably from the contribution of rice （C3 plant） and millets （C4 plants） due to the coexistence of these crops at this site. In addition, the human mean δ^13C value suggested that millet agriculture was only minor in human diets. The human δ^15N values （6.6‰ to 10.8‰, averaging 9.0‰±1.2‰, n=24） showed that animal resources played a significant role in human diets, and varied greatly. The mean δ^13C value of the pigs （-14.3‰±2.5‰, n=13） was quite similar to that of the humans, but the mean δ^15N value of the pigs was slightly less （1.3‰） The similar δ^13C and δ^15N values between humans and pigs suggested that the pigs consumed a lot of humans＇ food remains. No correlations of the δ^13C and δ^15N values between humans and pigs showed that both human and pig diets were based mainly on plant foods, which might be related to highly developed rice-millet mixed agriculture at that time. In comparison with the human and pig diets between the two periods, millet agriculture contributed more than 10% in the Shijiahe Culture, if a simple mixing model was used. This apparent dietary shift matched the climatic variation and agricultural development through the time. In warm and humid climate with the expansion of the Qujialing Culture northwards, rice was widely cultivated. However, when the climate was cold and add, northern culture was expanding southwards. Thus, millet agriculture became more important.
