36 research outputs found
Short communication: Goat colostrum quality: Litter size and lactation number effects
The quality of colostrum of Murciano-Granadina goats was studied to establish the transition period and the time when milk can be marketed. Forty-three dairy goats were used: 19 primiparous (15 single births; 4 multiple births) and 24 multiparous (10 single births; 14 multiple births). Samples were collected every 12 h during the first week postpartum. Physicochemical parameters and somatic cell count were determined. Analysis of variance with repeated measures was used to study the effect of different factors: postpartum time, litter size, lactation number, their interactions, and production level on colostrum. Postpartum time had a significant effect on all parameters studied, which decreased along the first week of lactation, whereas lactose, pH, and conductivity increased. Based on these results, colostrum secretion takes place until 36 h postpartum (hpp). In relation to other factors of variation studied, the lactation number influenced most colostrum components, whereas the litter size only affected the pH value, protein and lactose content. The production level influenced only the protein and dry matter contents, with an inverse relationship. Milk produced during the period between 36 and 96 hpp is considered transition milk, which should not be commercialized. Milk collected after 4 d postpartum (96 hpp) could be marketed, ensuring that its composition does not present a risk in the dairy industry.This work was part of the AGL-2009-11524 Project funded by the Spanish Ministry of Science and Innovation (Madrid, Spain). The authors are grateful to ZEU-Inmunotec (Zaragoza, Spain) for their support.Romero Rueda, T.; Beltrán MartĂnez, MC.; RodrĂguez Garcia, M.; Marti-De Olives A.; Molina Pons, MP. (2013). Short communication: Goat colostrum quality: Litter size and lactation number effects. Journal of Dairy Science. 96(12):7526-7531. https://doi.org/10.3168/jds.2013-6900S75267531961
The effect of type of suckling on the pre- and post-weaning lactation performance of Damascus goats and the growth rate of the kids
The effect of suckling type on the pre-and postweaning lactation performance of Damascus goats and the growth rate of the kids
The effect of suckling type on the pre-and postweaning lactation performance of Damascus goats and the growth rate of the kids
International audienc
Meat production from goats in semi-intensive systems
Meeting: Small Ruminants Research and Development in the Near East, 2-4 Nov. 1988, Cairo, EGIn IDL-298
Preliminary studies on nitrogen nutrition of lactating Damascus goats
International audienc