In the paper, the effects of nutrition lick brick and salt brick as supple-ment feed on the performance of Tan sheep were studied. 36 fattening Tan sheep with the average weight of about 23 kg were chosen, they were r...In the paper, the effects of nutrition lick brick and salt brick as supple-ment feed on the performance of Tan sheep were studied. 36 fattening Tan sheep with the average weight of about 23 kg were chosen, they were randomly divided into 3 groups according to the weight, and each group had 12 sheep. Control group was fed with normal daily ration, experimental group 1 was fed with normal daily ration＋nutrition lick brick, experimental group 2 was fed with normal daily ration＋salt brick, the experimental period was 60 d. The results showed that 1） compared with CK, daily gain of group 1 improved 17.09%（P〈0.01）, feed conversion ratio reduced 11.69%（P〈0.05）, and average gross profit per sheep improved 51.65 yuan; daily gain of group 2 improved 7.03%（P〈0.05）, feed conversion ratio reduced 4.06%（P〉0.05）, and average gross profit per sheep improved 19.78 yuan; 2） compared with group 2, daily gain of group 1 improved 9.40%（P〈0.05）, feed conversion ratio re-duced 7.96%（P〈0.05）, and average gross profit per sheep improved 31.87 yuan;these indicated that nutrition lick brick and salt brick as supplement feed for Tan sheep both can improve the production performance of Tan sheep, and the supple-mentary feeding effect of nutrition lick brick was better.展开更多
Epibionts are floristic and faunistic benthonic organisms living attached to the skin of another animal; this phenomenon is well known as epibiosis and has been documented for all species of marine turtles. The intera...Epibionts are floristic and faunistic benthonic organisms living attached to the skin of another animal; this phenomenon is well known as epibiosis and has been documented for all species of marine turtles. The interaction between the turtle and epibiotic organisms is to provide substrate for the epibionts communities, their presence are based mainly in the shell and in other anatomical structures in lower intensity. It has been registered that some epibionts affect growth, and can cause diverse damage in anatomical structures like the eyes, mouth, and limbs. They are usually vectors of disease. For such reasons the objective of the present work is to determinate the epibionts species associated with the marine turtle Lepidochelys olivacea in Ceuta beach, Sinaloa, Mexico. During the nesting season May-December of 2008-2009, the female turtles nesting and strandings were monitored and epibionts were collected. Eleven species distributed in the following taxa were obtained： fishes of the family Echeneidae, Hirudineos （Ozobranchus branchiatus, Ozobranchus margoi）, Arthropods （Chelonibia testudinaria, Lepas sp., Conchoderma virgatum） and the first registry of Stephanolepas muricata for Lepidochelys olivacea. According to the records from Ceuta Beach the species of epibionts are still being registered with the exception of Ozobranchus margoi, and Stephanolepas muricata, thus, suggesting further research on epibiont organisms.展开更多
文摘In the paper, the effects of nutrition lick brick and salt brick as supple-ment feed on the performance of Tan sheep were studied. 36 fattening Tan sheep with the average weight of about 23 kg were chosen, they were randomly divided into 3 groups according to the weight, and each group had 12 sheep. Control group was fed with normal daily ration, experimental group 1 was fed with normal daily ration＋nutrition lick brick, experimental group 2 was fed with normal daily ration＋salt brick, the experimental period was 60 d. The results showed that 1） compared with CK, daily gain of group 1 improved 17.09%（P〈0.01）, feed conversion ratio reduced 11.69%（P〈0.05）, and average gross profit per sheep improved 51.65 yuan; daily gain of group 2 improved 7.03%（P〈0.05）, feed conversion ratio reduced 4.06%（P〉0.05）, and average gross profit per sheep improved 19.78 yuan; 2） compared with group 2, daily gain of group 1 improved 9.40%（P〈0.05）, feed conversion ratio re-duced 7.96%（P〈0.05）, and average gross profit per sheep improved 31.87 yuan;these indicated that nutrition lick brick and salt brick as supplement feed for Tan sheep both can improve the production performance of Tan sheep, and the supple-mentary feeding effect of nutrition lick brick was better.
文摘Epibionts are floristic and faunistic benthonic organisms living attached to the skin of another animal; this phenomenon is well known as epibiosis and has been documented for all species of marine turtles. The interaction between the turtle and epibiotic organisms is to provide substrate for the epibionts communities, their presence are based mainly in the shell and in other anatomical structures in lower intensity. It has been registered that some epibionts affect growth, and can cause diverse damage in anatomical structures like the eyes, mouth, and limbs. They are usually vectors of disease. For such reasons the objective of the present work is to determinate the epibionts species associated with the marine turtle Lepidochelys olivacea in Ceuta beach, Sinaloa, Mexico. During the nesting season May-December of 2008-2009, the female turtles nesting and strandings were monitored and epibionts were collected. Eleven species distributed in the following taxa were obtained： fishes of the family Echeneidae, Hirudineos （Ozobranchus branchiatus, Ozobranchus margoi）, Arthropods （Chelonibia testudinaria, Lepas sp., Conchoderma virgatum） and the first registry of Stephanolepas muricata for Lepidochelys olivacea. According to the records from Ceuta Beach the species of epibionts are still being registered with the exception of Ozobranchus margoi, and Stephanolepas muricata, thus, suggesting further research on epibiont organisms.
