The cashmere production of Inner Mongolia white cashmere goats was increased without obvious deleterious effects on the cashmere fibers in the SDPP group (metabolizable energy: 8.34 MJ/kg, CP: 11.16 %, short daily photoperiod: 7 h Light:17 h Dark).

The production and quality of cashmere are affected by nutritional, environmental and genetic conditions of the goats, and the seasonal photoperiod can induce the animals to increase cashmere production without obvious deleterious effects on the cashmere fibers (Liu et al.,

This study investigated the effects of dietary supplementation with N‐carbamylglutamate (NCG) on maternal endometrium and fetal development during early pregnancy of Inner Mongolia white cashmere goats. Forty‐eight pregnant Inner Mongolia white cashmere goats (average age 3 years old, average lactation parity 2, and average body weight 43.81 ± 2.66 kg) were randomly allocated to three groups: a basal diet (control group, n = 16), a basal diet plus 0.30‐g NCG/d (NCG1 group, n = 16), and a basal diet plus 0.40‐g NCG/d (NCG2 group, n = 16). All of the does were housed in individual pens and the NCG treatment was conducted from Days 0 to 90 of pregnancy. At Days 17 and 90 of pregnancy, six representative pregnant does in each group were slaughtered. The current study results demonstrated that maternal NCG administration during early pregnancy effectively increased the arginine family of amino acids and the glucogenic amino acids concentrations and promoted the mRNA expression of osteopontin (OPN), αv and β3 integrins, and endometrial development of Inner Mongolia white cashmere goats. The supplementation improved the fetal brown adipose tissue (BAT) stores and the mRNA expression of UCP‐1 and BMP7, thereby helping to the fetal early development.