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Short Communication: Relationship Between Body Growth And Mammary Development In Dairy Heifers, L F. Silva, M J. Vandehaar, Brian K. Whitlock, R P. Radcliff, H A. Tucker

Faculty Publications and Other Works -- Large Animal Clinical Sciences

Our objective was to determine if prepubertal rate of body weight (BW) gain, independent of diet, was related to mammary development of dairy heifers. Data from two studies recently conducted at Michigan State University were used to identify factors, within a dietary treatment group, that would account for variation in first lactation milk production or amount of mammary parenchymal DNA at the time of puberty. Factors analyzed for variation in milk production during first lactation were: postpartum BW, prepubertal BW gain, gestational BW gain, postpartum BW gain, body condition score (BCS) at breeding, and BCS at calving. Factors analyzed for …

Effect Of Dietary Protein On Prepubertal Mammary Development In Rapidly Growing Dairy Heifers, Brian K. Whitlock, M J. Vandehaar, L F. Silva, H A. Tucker

Faculty Publications and Other Works -- Large Animal Clinical Sciences

The objective was to determine whether increased dietary protein would enhance mammary development in prepubertal heifers fed for rapid body growth (1.2 kg/d). Fifty-four Holstein heifers (weighing approximately 134 kg) were assigned to one of three treatments. Heifers were fed a total mixed ration with metabolizable energy at 2.85 Mcal/kg and metabolizable protein at low, standard, or high concentrations (37, 41, or 44 g/Mcal of metabolizable energy, respectively) from 3.5 mo of age until slaughter at approximately 46 d after puberty. Heifers fed low, standard, and high protein gained 1130, 1170, and 1180 g/d, respectively. Dietary protein did not affect …

Sp598-Using Single-Strand Fencing To Manage Deer Damage, The University Of Tennessee Agricultural Extension Service

Insects, Pests, Plant Diseases and Weeds

White-tailed deer are the number one source of crop depredation in Tennessee. Once in peril of extermination, the white-tailed deer population in Tennessee now approaches one million. The number one field crop for depredation is soybeans; however, other crops, gardens, tree plantings and ornamentals shrubs and flowers are damaged also.

Deer damage soybeans by browsing, trampling and bedding, and indirectly by increasing weed competition. Deer feed on soybeans from the seedling stage through harvest. Browsing of seedlings is most destructive, as one bite can kill a plant if the cotyledons (the first pair of leaves on a soybean seedling) are …