Juniper Publishers Journal of Dairy and Veterinary Sciences

  Journal of Dairy & Veterinary Sciences Abstract Sustainability, animal welfare, environmental and climate concerns and awareness of social responsibility towards the community have increased consumers interest in knowing how, where and by whom food is produced and handled on its way from the farm to the table. This constitutes a business opportunity for farmers as a growing number of consumers want to buy food, produced locally or regionally directly or under farm certification schemes whereby acceptable animal welfare conditions play often an important role. Farming systems for dairy cows, including housing and management conditions, are important factors affecting their health and other aspects of their welfare, partly through housing and equipment and partly through management and handling practices. Importance of European Food Safety Authority (EFSA) The panel on Animal Health and Animal Welfare (AHAW) is a scientific advice on all aspects of animal diseases and welfare o...

  Journal of Dairy & Veterinary Sciences - Juniper Publishers Abstract In order to determine the phytochemical and bromatologic components of S. nigrum L., plant widely used as medicine and food for the population in the Huambo province, in Angola, young leaves were harvested in the morning period. They were subsequently put to dry in shade for 15 days, mashed in a traditional mortar and passed through a sieve to reduce them in finer powder. 500g of leaves powder were sent to National Center for Animal and Plant Health in Cuba (CENSA) for the determination of secondary metabolites and bromatologic analisis. Qualitative phytochemical analysis were performed using the Rondina and Coussio methodology (1969), the bromatologic trials by the Kjeldahl methods and thermogravimetric balance was used for dry matter and moisture calculation. Tannins, alkaloids, flavonoids, primary and secondary amines, leucoanthocyanidins, free phenols and triterpenes and or steroids were identified. In t...

  Journal of Dairy & Veterinary Sciences - Juniper Publishers Abstract Heat stress (HS) has detrimental effects on lactating cattle especially when they are in a negative energy balance. Feed additives have been shown to mitigate the effects of HS by improving metabolic and immune function. The objective of this study was to evaluate the effect of feeding a dietary supplement (Land O’Lakes Inc., Arden Hills, MN) on the HS response in multi-parturient dairy cows in mid lactation. Two pens of cows at a commercial dairy were fed either control (CON) or additive (YB) at approximately 56.5 kg/pen per d for two weeks prior to arrival. Study cows (n=12) were balanced in days in milk (DIM), milk production, and parity (111.91±4.85 d, 33.67±0.96 kg/d, and 2.25±0.18). On arrival, the cows (6 YB and 6 CON) were randomly selected and housed in environmentally controlled chambers for 18 d and fed appropriate diet. Cows were subjected to 7 d of thermoneutral (TN) conditions, 7 d of HS, and 4...